Ink jet printing device and method of ink jet. RU patent 2505415.

FIELD: printing industry.

SUBSTANCE: ink jet printing device controls ejection of ink from the printheads, whereby only low infiltration ink is ejected in the edge area of print carrier, which is located next to the nonprint area, and at this time, the high infiltration ink is not used. In addition, the ink jet printing device controls ejection of ink from the printheads, whereby the low infiltration ink and the high infiltration ink are used for non-periphery area which is located near the periphery area, and to carry out printing the low infiltration ink are ejected into the non-periphery area prior to the high infiltration ink.

EFFECT: prevention of reduction of optical density.

14 cl, 86 dwg

THE TECHNICAL FIELD

The present invention relates to a device for inkjet printing and method of inkjet printers, used to print images by ejection of the ink on the print media.

THE LEVEL OF TECHNOLOGY

Currently, the print device, which of a drop of ink from the print head for printing, widely used as an output device. In the print device, where the system is used, a printer, which of a drop of ink from the nozzle, which are formed in the printhead, and forms a point on the media print to print the image. To essentially fill specific predefined part of media print one color ink spots are formed in this area by the ejection of ink drops with high density printing. However, when too much ink drops in the print area of a given size is happening bleed ink both inside and outside of the print area, and therefore cannot get a clear outline of the printed image.

To resolve this problem, the Japanese patent publication №2002-113850 disclosed ink jet printer to which the print area is divided into the outer region and the inner region, and for printing on different areas of the print are different ink depending on what area is subject to print. In a printing device, opened in the Japanese patent publication № 2002-113850, for the formation of points in the outer region apply ink, with a relatively low infiltration rate (inks, which are relatively slowly absorbed in the print media; hereinafter referred to ink low infiltration), whereas for the formation of points in the interior of the used ink, with a relatively high infiltration rate (ink relatively quickly absorbed in the print media; hereinafter referred to ink a high infiltration) and ink low infiltration. As for printing the internal area are two types of ink that have different infiltration rate, the period needed for drying the media can be reduced in comparison with the case when for print only apply ink low infiltration having a low infiltration rate, as a result, the print speed may increase. Furthermore, compared with the case when for print inner region only apply ink high infiltration, you can reduce the spreading of the ink and thus avoid the deterioration of the quality of the printed image.

When the printer is revealed in the Japanese patent publication №2002-113850, used for printing, in the inner area alternately formed, in chessboard order, point ink two types with different infiltration rate. Thus, in the inner area of both are the point of ink high infiltration point and ink low infiltration. However, in the Japanese patent publication №2002-113850 simply States that the point of ink two types that have different infiltration rate, alternately formed in the inner area of the image to be printed, printing unit, and the order in which these two types of ink ejected for the formation of dots on the print media, is not specified. Thus, we can infer that a drop of ink low infiltration will be induced in the print area after ejection of droplets of ink high infiltration. In this case, the color component, for example, dye or pigment ink high infiltration printed on the print media, can deeply absorbed in the print media, and, thus, the density of point may decrease. Thus, the density part of the printed image may be insufficient, and the quality of the printed image may deteriorate. This problem occurs in case of a dye as nonferrous material for the ink, but most often occurs in case of a pigment as a color of the material.

THE ESSENCE OF THE INVENTION

Proceeding from the above problems, one object of the present invention is to provide a device inkjet printing and ways of inkjet printing for printing using an ink high infiltration and ink low infiltration and, simultaneously, to prevent reduction of optical density.

According aspect of the present invention, provided ink jet printer that contains: printhead capable first ink and second ink, color similar to the color of the first ink higher infiltration than the first ink, and used to print on print media; and a print management first ink and second ink from the print heads, resulting ejected only the first ink, and the second ink is used for printing in a regional area, which is near the area where the first ink and second ink is not ejected, print area, the corresponding area, subject to print at least one of the first ink and other inks, media, print, and are used as the first ink, second and ink, and the first ink ejected to a second printing inks in region, which is near the part of the printing area.

According aspect of the present invention provides a method for inkjet printing, according to which the print head, capable first ink and second ink, color which is similar to the color of the first ink higher infiltration than the first ink is used to print the image on the media of printing in this way inkjet includes the print management for control first ink and second ink from the print heads, resulting ejected only the first ink, and the second ink is used for printing in a regional area, which is near the area where the first ink and second ink is not ejected, print area, the corresponding area, subject to print at least one of the first ink and second ink on the print media, and are used as the first ink, second and ink, and the first ink ejected to a second printing inks in region, which is near the part of the printing area.

Because the ink jet printer and a way of inkjet printing according to the present invention help to prevent the decrease of optical density, you can avoid the deterioration of the quality of the printed image.

Additional features of the present invention readily available from the following description of illustrative options for implementation (with reference to the accompanying drawings).

BRIEF DESCRIPTION OF DRAWINGS

Figure 1 - schematic view of the device term inkjet according to the first version of the implementation of the present invention.

Fig.2 - schematic view from the top of the print heads, used in the device inkjet printing, as shown in figure 1.

Fig.2 and 2C diagrams to explain the order in which the ink droplets ejected print heads, shown in fig.2.

Figure 3 - the generalized block diagram showing the configuration management system for printing undertaken device inkjet printing, as shown in figure 1.

Figure 4 - the functional block diagram showing schematic configuration for data transfer during processing of image data carried out by a system of image processing, which includes ink jet printer, as shown in figure 1, and the host PC.

Figure 5 - a detailed flow diagram showing the schematic configuration for data transfer that is used to explain the regional processing carried out in the block diagram shown in figure 4.

Fig.6-6L - explanatory diagrams to explain the process of distribution of the data to highlight, for particular areas of the print data to print the appropriate print heads in the first variant of implementation.

Fig.7 - schematic showing the ratio between fig.7 and 7B.

Fig.7 and 7B - flowchart, showing the schematic configuration for data transfer used to explain the regional processing carried out during a print operation, device inkjet according to the second variant of the implementation of the present invention.

Fig.8-8L - explanatory diagrams to explain the process of distribution of the data to highlight, for particular areas of the print data to be printed, in the second variant of implementation.

Fig.9-9L - explanatory diagrams to explain the process of distribution of the data to highlight, for specific fields of printing, print data, which are subject to print, in the third embodiment of the present invention.

Fig.10 - schematic view from the top of the print heads, used in the device inkjet according to the fourth draft of the implementation of the present invention.

Fig.10 and 10C - explanatory diagrams to explain the order of ejection ink printing heads, shown in fig.10.

11 - explanatory schematic showing the correlation between the positions of printing heads and the position of the target region of the print media when the seal should be carried out using the print heads, shown on fig.10-10C.

Fig.12 - schematic showing the ratio between fig.12 and 12B.

Fig.12 and 12B - flowchart, showing the schematic configuration for data transfer used to explain the regional processing carried out in the course of the operation of the print device inkjet printing, according to the fourth draft of the implementation.

Now with reference to the drawings will be described ink jet printer according to the present invention.

(The first variant of implementation)

Figure 1 shows a schematic view of the future configuration of the device color inkjet according to the first version of the implementation of the present invention. In the device inkjet contains six ink liquids black ink low infiltration), black as ink high infiltration), black as ink low infiltration), cyan, Magenta and yellow: Ke, Km, Ke, C, M and Y) in tanks 207-212 for submitting these ink liquids of these six tanks 207-212 ink on the print heads 201 to 206. Printheads 201 to 206 provided in correlation with six ink liquids for ejection ink coming from tanks 207-212 ink. Of the six printing heads 201 to 206, printheads 201, 202 and 203 apply for ejection of black ink. In addition, in this version, the implementation of, inter print heads, which black ink, printheads 201 and 203 ink, which are relatively slowly absorbed in the print media (hereinafter referred to ink low infiltration), and the print head 202 ink relatively quickly absorbed (hereinafter referred to ink a high infiltration).

During a print operation, conveyor rollers 103 and supporting rollers 104, which rotate together, capture and transport media 107 printing (paper). In addition, conveyor rollers 103 and supporting rollers 104 also support media 107 printing. Simultaneously, the carriage 106, which can be mounted tanks 207-212 ink and printheads 201 to 206, makes reciprocating movement in the direction of X. Then, while the carriage 106 makes reciprocating movement, ink ejected print heads, and an image or images are printed on the media 107 printing. During the operation, not connected with a stamp, for example, restore and recovery operations for the print heads 201 to 206, carriage 106 moves to the initial position of h, as indicated by the dotted lines in figure 1, and stays there.

When you enter instructions to begin printing, carriage 106 waiting in the original position h, shown in figure 1, is moved from position h and begins to make reciprocation, transferring printheads 201 to 206 in the direction of X. in addition, while the carriage 106 makes reciprocating movement, printheads 201 to 206 ink onto the media 107 print to print the image or images. When printheads 201 to 206 complete one pass (one-pass scanning), printing on the site, the width of which is equivalent to the range, in which placed nozzle printhead 201 to 206.

When printing is finished, together with the scanning performed by a carriage 106 in the main direction of the scan (positive X direction), carriage 106 moves in the main direction of the scan (negative X direction) to the original position h. During the move, printheads 201 to 206 move again, ink onto the media 107 printing. During the period, lasting from the end of the previous pass scanning before the start of the next run the scan, conveyor rollers 103 rotate and transported media 107 printing in the auxiliary direction of the scan (Y direction), which crosses the main direction of the scan. When re-implementation of the scan, implemented by printing heads 201 to 206 and transfer media 107 printing, as described above, and print the images on the media 107 printing. This print operation, carried out by the ejection of ink from the print heads 201 to 206, is a management tool that will be described below.

In the above illustrative configuration, tanks 207-212 ink and printheads 201 to 206 installed on the carriage 106 as independent units. However, you can use the configuration in which the carriage is 106 installed integrated cartridge, which includes tanks 207-212 ink and printheads 201 to 206. Additionally, you can use the configuration in which the carriage is installed multicolor integrated print head, capable ink of different colors.

Now you will learn how to generate the data used for the device of inkjet printing. Figure 3 shows a generalized block diagram showing the configuration of the print management system for the device inkjet shown in figure 1. Device 600 inkjet printing is connected through 400 interface to the device data, such as a host computer (hereinafter referred to as, the host PC) 1200. Various data and control signals associated with printing, routed from the data collected in the controller 500 print device 600 inkjet printing. Controller 500 printer controllers 403 and 404 of motors and controllers 405 heads, which will be described below, on the basis of control signals received over 400 interface. In addition, the controller 500 printing processes input image and signal coming from the scheme 406 signal generation type head, which will be described below. Motor 401 transportation is used for rotation of transporting roller 103 that carry the media 107 printing. Motor 402 carriage provides a reciprocating movement of the carriage 106, which has printheads 201 to 206. Controllers 403 and 404 of electric motors control motor 401 transport and motor 402 carriage, respectively, and printheads 201 to 206 managed controllers 405 heads, which is equivalent to the number of print heads 201 to 206. In addition, the scheme 406 signal generation type head passes on the controller print 500 signal to indicate the type and number of print heads 201 to 206 installed on the carriage 106.

Figure 4 shows a functional block diagram showing schematic configuration for image data processing carried out by the system of image processing, which includes ink jet printer and the host PC. Controller 500 print device 600 inkjet printing processes the data, passed through the interface 400 host-PC 1200 on which you installed the printer driver.

The host PC 1200 accepts input 1000 images from the application program and is in the process of visualization 1001 upon input data to 1000 images with a resolution of 1200 dpi (dots per inch). As a result, are generated by multivalued RGB data 1002 print. In this embodiment, the multivalued RGB data 1002 printing are 256-digit data, and the multivalued RGB data 1002 printing is relayed to the controller 500 print device 600 inkjet printing. Controller 500 print is in the process of 1007 color transformation to convert multivalued RGB data 1002 print multivalued (256-digit) data 1008 KCMY. Then the process of 1009 quantization (for example, an accidental colours) for quantization (conversion to binary form) multivalued (256-valued) data 1008 KCMY, as a result, the obtained binary data KCMY. In this embodiment, the generated binary data KCMY with a resolution of 1200 dpi.

Regional processing is carried out for the black data in binary data. Figure 5 shows a schematic showing the regional processing. First, the process of 2001 detection plot. From binary data black generated data for plot, i.e. the data of 2003 region. Binary data is black, which do not apply to those field is treated as data 2103 regional area. Regional plot is edge area, next to the area of the absence of printing, where printing is not available, and area, surrounded by the regional area is plot. In this embodiment, of binary data in black, one pixel (one point) is selected from the external site (the outer edge of the target field of print and set as a regional pixel, which is subject to print for the formation of a regional site. Other data are used for data region.

When generating the data of the regional area and data region, ink ejected for printing based on data from the regional area and data region. Now, with reference to fig.2-2C, you will learn how to ejection of the ink on the print media.

As shown in fig.2 when printheads move in the direction of-X, a drop of ink low infiltration (211 on fig.2) ejected printhead 201 as in region ( area), and in the boundary region (regional area). Then a drop of ink high infiltration (212 on fig.2) ejected printhead 202 in region ( plot). Then a drop of ink low infiltration (213 on fig.2) ejected printhead 203 in the regional area (regional area). Then, during the movement of the printing heads in the direction of X, as shown in fig.2, a drop of ink low infiltration (223 on fig.2) ejected printhead 203 as in region ( area), and in the boundary region (regional area). Then a drop of ink high infiltration (222 on fig.2) ejected printhead 202 in region ( plot). Then a drop of ink low infiltration (221 fig.2) ejected printhead 201 in the regional area (regional area).

During the printing process for field, a drop of ink 212 high infiltration, printhead 202 when moving in the direction X, deposited, blocking the point of ink 211 low infiltration, which were formed earlier. In addition, a drop of ink 222 high infiltration, printhead 202 when moving in the direction of X, deposited, blocking the point of ink 223 low infiltration, which were formed earlier. Because the ink 211 223 low infiltration slowly absorbed, i.e. these types of ink have low infiltration rate, point and ink 211 223 low infiltration remain on the surface of the print media until drops of ink and 222 212 high infiltration not on the print media. Then, when the ink 211 223 low infiltration and ink 212 222 high infiltration on the surface of the media blur, the infiltration rate of two kinds of ink are averaged. The infiltration rate increase beyond the infiltration rate for the segment of printed using only ink low infiltration. In particular, when area of the image is printed first, using an ink low infiltration with low infiltration rate, and then printed using ink high infiltration of high infiltration rate, non-ferrous materials are better absorbed into the print media, when implementing printing using only ink low infiltration, and abrasion resistance and resistance rising.

As described above, to print region of the printed image ejection of ink low infiltration is to ejection ink high infiltration (printing sequence region), due to which the ink low infiltration and ink high infiltration on the media print at least in contact with each other.

To print a regional area, ejection of ink is printing heads 201 and 203, which ink low infiltration (printing sequence regional area).

In the case when the non-ferrous material ink in the ink used to print the image, too much rises on the surface of the media and sometimes, for example, finger, inevitably about excessively elevated plot, educated color material on the print media, there is a possibility of non-ferrous material will be blurred, and the image quality will deteriorate. In addition, if a colored material ink in the ink used to print the image, too much rises on the surface of the media, and then the characters are flagged using token, the possibility exists that the marker will color material on the elevated parts, and the quality of the printed image will deteriorate. However, when non-ferrous material or materials properly absorbed in the print media, excessive exaltation of ink on the surface of the media is not happening, and if you touch a finger to the media print or images printed are marked using token, the printed image or images will not be lubricated, which allows to maintain high quality images for the image or images.

Furthermore, when implementing printing for region according to the procedure ejection ink low infiltration and ink high infiltration, provides more high optical density for the printed image than in the case when the ejection of ink high infiltration is to slow drying, or when it comes to the ejection of ink only high infiltration.

Print data 2003 region is carried out using the print heads, which ink low infiltration, and printheads that ink high infiltration. With regard to the ejection of ink low infiltration, printheads used for printing, changing, depending on the direction in which you are scanning a whole block of printing heads and the carriage. When a block of the print head moves in the X direction, the print head 203 ink low infiltration 223, as shown in fig.2, or when the printhead moves to-X, the print head 201 ink low infiltration 211, as shown in fig.2. Thus, the printing is carried out by distribution ejection ink low infiltration between the two print heads. In the result, shown in fig.2, regardless of the direction of scanning to block print heads, any of the printheads 201 or 203, which ink low infiltration, is located, in the direction of scanning, in front of the printhead 202, which ink high infiltration. Thus, the ink jet printer prints the first implementing ejection at inelastic ink from the print head 201 or printhead 203, and then out of the print head 202. Thus, regardless of the direction of the scan to print heads, printing is initiated using an ink low infiltration and continues using ink high infiltration. As described above, when a printhead is located 201 ahead in the direction of scanning, printing sequence (first the printing sequence) is used for ejection of ink from the print heads 201 and 202 and print region. When the print head 203 is ahead in the direction of scanning, printing sequence (second printing sequence) for ejection of ink from the print heads 202 and 203 is used for printing region.

In this embodiment, the two print heads, which both ink low infiltration, are used for printing data 2003 region; however, this way you can apply only one printhead. For example, when the print heads are moved in the X-direction, only printhead 201 can ink to print data 2003 region. In addition, when the printhead moves the direction-X, only printhead 203 may ink to print data 2003 region. As a result, spreading region, where the first deposited ink droplets high infiltration, not actually observed.

Now, with reference to fig.6-6L, will describe the process of data distribution, carried out by allocating data printing heads 201, 202 and 203 in different regions. One cell in the area represents one pixel for the print data, and one ink point for one pixel. On fig.6-6L shows the explanatory scheme of the process of allocating data printing heads 201-203, which will be described below, and fig.6, 6G and 6J consistent images, printhead 201. Similarly, fig.6D, 6H and 6K consistent images, printhead 202, and fig.6, 6I and 6L consistent images, printhead 203. On fig.6 shows a diagram showing all the print data to the target area of print, used in this embodiment. Focal area printing fig.6 represents an image, which includes regional area, which is an area that extends inwards from the outer edge of the distance equivalent to the specified number of pixels, and region, which is located inside the outer region. The dashed lines running horizontally in the center of fig.6-6L, designate the boundary between areas of differing direction scan the print heads. Areas above the dotted lines formed pixels, printable, when the direction of the scan of the print heads is the X (right to fig.6-6L), and sites dotted lines formed pixels, printable, when the direction of the scan of the print heads is a trend-X (left fig.6-6L). At realization of process of 2001 detection plot, binary data printing are used to generate the data for 2003 areas that are used to build the pixels on fig.6F, and data 2103 regional area, which are used to build the pixels on fig.6.

Thus, the image data 2003 region, shown in fig.6F, is printed using both print heads 201, 203, which ink low infiltration, and printhead 202, which ink high infiltration. During the printing process, according to the established order print for ejection of ink in a separate area of the print data 2003 region, printing, carried out with the use of ink high infiltration, is carried out after printing is carried out using an ink low infiltration.

When the print heads are moved in the direction of the X printing for the upper half of the area on fig.6F-6I. At this time, the print head 203 ink low infiltration, and printhead 202 ink high infiltration. At this time, in the direction of the scan, print head 203 is located in front of the printhead 201. Thus, for one scan carried out for printing the target field of printing, ink low infiltration ejected into the specified area of the print head 203, and then ink high infiltration ejected in the same area of the printhead 202.

When the scan is finished in the X direction, the direction of the scan is reversed, and printheads begin moving in the direction of-X. When printheads are moving in the direction X printing using the print head 201, which ink low infiltration, and printhead 202, which ink high infiltration. In this case, the print head 201 is located in front of the printhead 202 in the direction of the scan. Thus, for one scan carried out in direction X, printable target field of printing, ink low infiltration ejected printhead 201 in the specified area, and then ink high infiltration ejected printhead 202 in the same area. As described above, from the data of 2003 area shown on the fig.6F, data for the top half, which is subject to print during the scan in the X-direction allocated printhead 202, which ink high infiltration, and printhead 203, which ink low infiltration. The ratings printhead 202, are the print data to the upper half of the image that is displayed on fig.6, while the data allocated printhead 203, are the print data to the upper half of the image that is displayed on fig.6І. In addition, 2003 region, data for the lower half of which is subject to print during the scan direction-X, stands out printhead 201, which ink low infiltration, and printhead 202, which ink high infiltration. In addition, data, dedicated printhead 201, are print data for the lower half of the image that is displayed on fig.6G, while the data allocated printhead 202, are print data for the lower half of the image that is displayed on fig.6.

As a result, the data to be separate print print heads, are the following. Data printed by the printing head 201, they are a logical sum (fig.6J) regional area of data on fig.6 and data region on fig.6G. Data printed by the printing head 202, they are a logical sum (fig.6) regional area of data on fig.6D and data region on fig.6. Data printed by the printing head 203, they are a logical sum (fig.6L) regional area of data on fig.6 and data region on fig.6І.

The present invention also includes a program that uses the above-described method of inkjet printing for running device inkjet printing and allows the device inkjet ink in the target area of the print media printing and printing.

For this option, the implementation shall apply the following structures of the ink. The relationship of the individual components are presented using mass parts (the sum of all components is 100 mass parts).

(Ink high infiltration)

Dispersion of pigment

50 mass parts

10 mass parts

Polyethylene glycol 1000

mass part 1

E100 (trade name of Kawaken Fine Chemicals Co., Ltd.)

mass part 1

The remaining part of

(Ink low infiltration)

Dispersion of pigment

50 mass parts

10 mass parts

Polyethylene glycol 1000

mass part 1

E100 (trade name of Kawaken Fine Chemicals Co., Ltd.)

0,03 mass parts

The remaining part of

The above dispersion of pigment was obtained in the following process.

[Dispersion of pigment]

Soot deposits in the amount of 10 g with a specific surface of 230 m 2 /g and DBP absorption 70 ml/100 g, and p- acid in the amount of 3.41 g well in the water in the amount of 72 g, and then in the resulting mixture drip added nitric acid in the amount of 1,62 g, which is then stirred with a temperature of 70 degrees C. after a few minutes, solution, which 1,07 g sodium nitrite dissolved in 5 grams of water, added to the mix, and the resulting mixture was stirred for one hour. The resulting suspension was filtered through a quality filter paper №2 Toyo Roshi (production Advantis), and the pigment particles are well washed and dried in an oven at a temperature of 90 C and then, added water in the pigment. As a result, have made an aqueous solution pigment has pigment density 10 mass parts. In applying the above-described method has been obtained dispersion of pigment, which contained charged anions, soot in which the hydrophilic group attached to the surface through the phenyl group.

The ink used for the implementation of this option is just an example of the application of the present invention, and you can apply two types of ink with similar colors and different infiltration rate.

Color material used for this variant of implementation, called pigment, which includes hydrophilic group, attached to the particles of pigment. There is another type of nonferrous material called pigment, by dispersed in the resin, where resin is attached to the particles of pigment, and hydrophilic group resin has the property of solubility in water. According to authors of the invention, pigment is more suitable for the present invention, but the results of the present invention can also be obtained using pigment, dispersed in the resin.

The difference in infiltration between ink high infiltration and ink low infiltration is set depending on the surface tension. The results of the present invention can be obtained when the surface tension of ink high infiltration less surface tension ink low infiltration, and when surface tension ink high infiltration greater than or equal to 20 mn/m and less than or equal to 40 mn/m, and the surface tension of ink low infiltration greater than or equal to 40 mn/m and less than or equal to 60 mn/m In this embodiment, surfactant E100 (-2,4,7,9-tetramethyl-5--4,7-diol)) (trade name of Kawaken Fine Chemicals Co., Ltd.) used to control the surface tension. The infiltration rate ink high infiltration and infiltration ink low infiltration changed relative to each other using surface-active substances; however, you can use another solvent.

As described above, because the marginal region (regional area) is printed using ink low infiltration, you can reduce the blurring of the printed image, and you can increase the density of the image, at the same time avoiding the image degradation. In addition, region ( plot) reprinted by ejection of the first ink low infiltration and then ink high infiltration, the infiltration rate ink high infiltration in the print media may be reduced. Thus, a large number of nonferrous material ink may remain on the surface of the media and optical density region may increase. Compared to the case of the implementation of the printing using only ink low infiltration, and the likelihood of non-ferrous material ink is growing and is supported on the surface of the media is reduced. This reduces damage to the printed image and image degradation that can occur if you touch the hands of the user or any other subject to the colored material ink remaining on the surface of the media. In reducing the number of ink, growing on the surface of the media for the printed image can be improved abrasion resistance and resistance .

(The second variant of implementation)

Now will be described print processing, carried out device inkjet according to the second variant of the implementation of the present invention. For sites that correspond to the sections in the first variant of implementation, also have the same reference designations used for the first option, in order to not repeat the description for these areas, and will be described below plots, which differ from the above.

For serial ejection ink of the individual nozzles need a set time interval to supply energy to printheads for ejection of ink. In addition, after the ejection of ink, require a period of re-filling of the ink for ink supply in individual nozzle. In addition, each time after a specified period of time, a period to transfer a specified amount of print data in the storage area. The number of points (hereinafter referred to as resolution scanning)that one print head may print one-pass scanning, largely dependent on the printhead. If necessary, increase the scan resolution printhead by changing the design of the printhead printhead design must be a lot of change, and, consequently, increases the cost of manufacture of inkjet printing.

Thus, in this embodiment, the number of pixels that one printhead prints for one scan in the direction of the scan (X direction or direction-X), expressed as 1/n to the number of points when printing is used only one print head. Since only one of the printhead is not enough to cover the total volume of print data in this embodiment provides a set of printing heads, and printing data assigned to this printing heads, as a consequence, the use of the print data may be due to the interaction of aggregate printheads. In particular, in this embodiment, the number of pixels that one print head may print one-pass scanning in the direction of scanning, expressed as 1/2 of the number of points when printing is used only one print head. In addition, the number of pixels to be printed each of printing heads, also equal to 1/2 the number of pixels that are generated when ejection ink only one of the printhead. As described above, in this embodiment, the print data on the basis of which the print heads ink on the print media, is allocated on a printing heads and the number of pixels for the print data is reduced according to the number of drops of ink ejected each print head.

Since the processing of the second variant of implementation differs from processing the first variant of the implementation of the regional process and the subsequent processes of the regional process will be described with reference to fig.7 and 7B and fig.8-8L. For this process binary data in the black for the entire region are shown in fig.8. Horizontal dotted line shown in the heart of fig.8-8L, marks the boundary of the regions with different directions of scan of the print heads. The pixels in the area above the dashed line are subject to print when the print heads are moving in the X direction (to the right on fig.8-8L), and the pixels in the field below the dashed line are subject to print when the print heads are moving in the direction of the-X (left fig.8-8L). In this embodiment, the length of the print heads 201, 202 and 203 in the direction of transfer media is half of the vertical length from one end to the other end of the grid shown in fig.8. Thus, the length of the print heads 201, 202 and 203 equal to the vertical length of the dotted line on the fig.8-8L to any part of the grid.

On fig.8-8L shows the schematic explanation of the process-purpose data printing printing heads 201-203, details of which are described below. Print data is shown on fig.8, 8G and 8 (J correspond to the print data is subject to print the print head 201. Similarly, the print data is shown on fig.8D, 8H and 8K, correspond to the print data is subject to print the print head 202, and the print data is shown on fig.8, 8I and 8L correspond to the print data is subject to print the print head 203.

First, the process of 2001 detection plot. First of all, for binary data black generated data for region, i.e. the data of 2003 region. Other data in binary data of black, which do not correspond to site is treated as data 2103 regional area. Data 2003 region and data 2103 regional area, obtained in the course of 2001 detection plot, shown in fig.8F and 8B. In this embodiment, the width of the outer region (regional plot is the equivalent of two pixels.

Data 2103 regional area for this variant of the implementation of the assigned two printing heads in accordance with the positions of columns for data 2103. Data 2103 regional area for columns with odd-numbered pages print the print head 201, and data 2103 regional area for columns with even numbers are printed by the printing head 203. Here, "a column with an odd number" or "column with an even number" means the data column that is located in an odd or even-numbered position relative to the left column.

Data 2003 region is appointed three printing heads in accordance not only with the positions of the data columns 2003, but with the directions of scan carriage 106 and printheads 201 to 206. When printing to plot is carried out in the direction of scanning X, as shown in fig.8 and 8I, data for the columns with odd-numbered pages print the print head 202, and data columns with even numbers are printed by the printing head 203. When implementing printing in the direction of scanning-X, as shown in fig.8G and 8H, data for the columns with odd-numbered pages print the print head 201, and data columns with even numbers are printed by the printing head 202.

To print data 2103 regional area of the fig.8, data for the columns with odd numbers on fig.8 are printed by the printing head 201 in accordance with the positions of columns, and column data with even numbers on fig.8 are printed by the printing head 203. As a result, all data 2103 regional area are printed using ink low infiltration.

When data 2003 region on fig.8F subject to print in the direction of scanning X, i.e., subject to the implementation of the seal of the site above the dotted line, data for the columns numbered first printed by the printing head 203, and data for the columns with odd-numbered pages print the print head 202 during the same scan. When implementing printing in the direction of scanning-X, that is when print plot below the dashed line, data for the columns with odd-numbered pages print the print head 201, and then the data for columns with even numbers are printed by the printing head 202. As described above, printing ink low infiltration is the print head, located at the front in the direction of the scan, and then, during the same scanning, printing ink high infiltration is the print head the rear in the direction of the scan. Thus, the printing is carried out by the ejection first ink low infiltration, and then ink high infiltration.

Printing data that correspond to the upper or lower section of the data 2003 region, are shown in fig.8G-8I. Data is for 2003 data the area to be printed by the printing head 201, shown on fig.8G, data printed by the printing head 202, are shown in fig.8, and data printed by the printing head 203, are shown in fig.8І. Thus, in the second variant of implementation, the print data to be separate print print heads, are the following. The data to be printing the print head 201, they are a logical sum (fig.8J) regional area of data on fig.8, and data region on fig.8G. The data to be printing the print head 202, they are a logical sum (fig.8) regional area of data on fig.8D and data region on fig.8. The data to be printing the print head 203, they are a logical sum (fig.8L) regional area of data on fig.8 and data region on fig.8І.

According fig.8-8L, the data to be printing printing heads 201-203 when scanning is retrieved in the direction of scanning, and compared with the data in print in the first variant of implementation, reprinted half of the data that can be printed for one scan. Thus, the period of data migration to migrate the data to a data storage area and the period of re-filling of the ink for every scan can be reduced by half, and scanning speed of printing heads can be increased twice. For example, when the device inkjet according to the first version of the implementation has a scanning resolution of 1200 dpi and scanning speed of 25 ips (inches per second), ink jet printer in the second variant implementation requires only low resolution for scanning equal to 600 dpi. Accordingly, in the second variant of implementation, speed of scanning the print head can be increased up to 50 ips, and you can reduce the time of printing. Thus, in case of application of a method of printing implementation of this option, you can increase the scanning speed of printing heads and can improve throughput for printing.

In addition, to improve the throughput when you first should be ejection of ink low infiltration, and then ink high infiltration for bidirectional printing in the X direction and the direction-X, two print heads, which ink low infiltration and ink high infiltration, required for any direction of print. Thus, to print in the X direction and in the direction X, in the General case, we only need four printheads that first ink low infiltration, and then ink high infiltration. However, according to the configuration of the print head device inkjet printing this option, implementation, prepared only one print head that ink high infiltration. Thus, to print in the direction of scanning X and print in the direction of scanning-X applies only print head that ink high infiltration. With this configuration, the number of print heads, which ink high infiltration, declining, and device configuration inkjet printing easier. As a result, you can reduce the size and cost of manufacture of inkjet printing.

In this embodiment, the print region ( plot), the ink is not ejected from the back of the print head in the line, i.e. the printhead 203 during scanning in the direction of the-X or printhead 201 during scanning in the direction of X. However, this invention is not limited to this configuration. Ejection of ink from the back of the print head may reduce abrasion resistance and resistance , but, provided that such deterioration is in the valid range, ink can be from the back of the print head. In this case, the optical density of the printed image may further increase. Do you need to use the back printhead for printing, can be set for each device inkjet printing at the design stage.

As described above, region ( plot) is divided into columns, and ink low infiltration and ink high infiltration ejected for print individual columns. At the same time, unlike the first variant of implementation, in which the ink is low infiltration and ink high infiltration ejected in the same position (in pixels) in the area of media in order to impose ink high infiltration of ink low infiltration, during the ejection of ink on the print media, these types of ink will not need to in the same positions in region and can be in different positions. Because of this invention is essential that the ink low infiltration in oblast to ink and high infiltration, ejection of ink should be so on the media print, point ink low infiltration formed near the points ink high infiltration. In addition, data can be generated on the basis of which individual printheads ink, due to which at least a part of pixels ink low infiltration and ink high infiltration overlap with each other on the print media. When a print operation is done this way, you can also get the effects provided by the present invention. In this embodiment, the points generated using an ink high infiltration, and points generated using an ink low infiltration, separated for individual columns; however, this invention is not limited to this configuration. Points generated from ink high infiltration, and points generated from ink low infiltration, may be placed in chessboard order, or in some other configuration.

(The third option exercise)

Now will be described print processing, carried out device inkjet according to the third variant of the implementation of the present invention. For sites that correspond to the sections in the first and second variants of implementation, also have the same reference designations, which are used for the first and second options of implementation, to avoid the need for the description of these sites, and will be described below plots, which differ from the above.

In the first and second variants of implementation, to print the image, width, equivalent to one or two pixels from the outer edge, is used as the regional plot print area. In this embodiment, four pixel is selected as a regional plot print area. The process used for the distribution of data on the print heads will be described with reference to fig.9-9L.

Increasing the image resolution, subject to print, it is preferable that the width of the regional plot (hereinafter number of boundary pixels) also increased. The number of boundary pixels depends on the amount of ink ejected print head that properly determined in accordance with a resolution. For example, when printheads that ink with a resolution of 600 x 600 dpi, are used to build the image, you must construct a print device, for which approximately 15 to 30 square selected as the amount of ink to be ejection of the printhead (e.g. volume ejection ink). In this case, the diameter of points for plain paper is usually about 60 microns.

In addition, when the printhead, which ink with a resolution of 1200 x 1200 dpi, are used to build the image, you must construct a print device, for which approximately 4 to 15 sq selected as the amount of ink to be ejection print heads (e.g. volume ejection ink). In this case, diameter point ink ejected on the print media, is usually about 30 microns for the case when using plain paper.

You do not want the ink was beyond region through the boundary region and beyond the printed image. Thus, it is preferable that the edge area, formed out of ink low infiltration, had a certain width. When region lies within the regional area that has a defined width, you can prevent the penetration of ink high infiltration ejected in region, out through the regional area. The width of the outer region should be supported in such a way that the ink high infiltration does not spread beyond the edges even with an increase in resolution. In the above cases, the print resolution 600 x 600 dpi and resolution of 1200 x 1200 dpi, provided that for the case of 600 x 600 dpi is provided by the proper number of boundary pixels, the number of boundary pixels required for the case of 1200 x 1200 dpi, you just need to double. While choosing the number of pixels for the regional area in accordance with a resolution is formed edge area (regional area) of appropriate width, that allows to prevent ink output high infiltration of region through the regional area and bleed ink high infiltration. Thus, you can prevent the deterioration of image quality. As described above, it is preferable that the width of the regional segment (width regional area was determined according to the difference in the infiltration between ink high infiltration, in region, and ink low infiltration, in the regional area, and to the number of pixels is determined in accordance with a resolution. Thus, when the high permission is set for ejection ink printhead, preferably to the number of pixels that form the regional plot, increased in accordance with a resolution.

(Fourth edition of implementation)

Now will be described print processing, carried out device inkjet according to the fourth draft of the implementation of the present invention. For sites that correspond to the sections of the options for implementing the first to the third, also have the same reference designations, which are used to options for the implementation of the first to the third, in order to avoid repetition descriptions for these areas, and will be described below plots, which differ from the above.

For printing, ink jet printer accordance with the variants of implementation of the first to the third applies only three printheads, i.e. two print heads, which ink low infiltration, and one printhead, which ink high infiltration. However, in this embodiment, for printing in the device inkjet apply only two print heads: the print head that ink low infiltration, and the print head that ink high infiltration. Throughput of printheads in this embodiment is slightly lower than the print heads of the options for implementing the first to the third; however, because the necessary number of printheads decreases, the cost of manufacture of inkjet printing can also be reduced.

For this clarification applies two pass mode press printheads 301 and 302 are divided into two areas in the direction of the transfer of the media and ink are subject to ejection in separate areas. The upper half of the printhead 301 is a section 301a located higher in the direction of transfer media, and the lower half is a section 301b below in this direction. Similarly, the upper half of the printhead 302 is the site of a 302a, located higher in the direction of migration, and the lower half is the site of a 302b below.

First described the direction of the scan start, used as the reference. When the ink jet printer for the implementation of this option performs or bidirectional printing, on each end of the scan the print heads, media, printed on to a distance equivalent to half the width, which can print printhead. Since this operation is easier to understand if we assume that the print media is motionless for an explanation of the uses 11, where the print media shows motionless.

For this variant the implementation of the ink jet printer is used in print mode, so that, in accordance with multiple passes scanning for the same target area of printing, print heads are the same target print area several times and ink in each transfer, the resulting image is printed by the means of passes scan. According to the two-pass printing in this embodiment, to form an image, two-pass scanning are printing heads for the same target print area.

In addition, in this embodiment, a set of nozzles, formed in HP printheads, highlighted by a set of areas. When you first scan, half of nozzles, which are divided in the direction of transfer media, passes through the target region of the press and, with the implementation of the second scan, the other half nozzles passes through the target region of the print. As a result, in this embodiment, the image in the target region of the printing is completed within a two-pass scanning. To print an image for field of the target area of printing, first ink, part of the allocated nozzle print head that ink low infiltration (third printing sequence). Then printing ink, part of the allocated nozzle print head that ink high infiltration (fourth printing sequence).

Printing for the field (1) is carried out by scanning the print heads in the direction of X, then, printed media, and the printing for the regions (1) and (2) is carried out by scanning the print heads toward-X. After this, the print media again tolerated, and print to (2) and (3) is carried out by scanning the print heads in the direction of X. Scanning printing heads and transfer media are repeated, and print on the print media is based on the data of the image.

When focusing on the area (1), printing is performed by moving the print head in the direction of the X, and then printing is carried out by scanning in the direction of X. When focusing on the region (2), printing is carried out by moving the print head in the direction of the X, and then printing is carried out by scanning in the direction of X. Thus, the direction of the scan printheads, when the first seal is subject to implementation for the media varies, depending on the areas of media. In this description of the invention, in a similar case for the regions (1) and (3)when a printhead is scanned in the X direction, when the first seal shall be enforced, say "scan start direction is the direction of X". Similarly, in a similar case for the regions (2) and (4)when a printhead in the direction of the scan-X, when the first seal shall be enforced, they say that "the direction of the scan start direction is-X".

Now, let's describe the order in which the ink is applied to the print media with a reference to fig.10-10C. From the print heads 301 to 305, printheads 301 and 302, which black ink, showing the fig.10. Printhead 301 is designed for ejection ink low infiltration, and printhead 302 is intended for ejection ink high infiltration. State, indicating the order in which the ink droplets ejected from separate printheads, are shown in fig.10 and 10C. The state of the fig.10 specifies the order in which the ink drops are deposited on the print area after you print, scan direction-X. Moreover, the status of the fig.10 specifies the order in which the ink drops are deposited on the print area once printing begins when scanning in the direction of X.

Now with reference to fig.10 will be described print processing, carried out to the field of print media, for which the direction of the scan start direction is-X. When the first scan, print head 301a ink low infiltration 311a in region and the regional area, and printhead 302a ink high infiltration 312a in region. After the first scan, print media is transferred to the specified distance, and then scan direction is reversed, and printheads 301 to 305 scan in the X-direction, while ejection at inelastic ink. At the same time, when scanning in the X direction, the print head 301b ink low infiltration 311b in the regional area.

Now with reference to fig.10 will be described print processing, carried out to the field of print media, for which the direction of the scan start is the x direction. On the first scan, print head 301a ink low infiltration 321a in region and the regional area. After the first scan, print media is transferred to the specified distance, scan direction is reversed, and printheads in the direction of the scan-X, while ejection at inelastic ink. The scanning in the X direction, the print head 301b ink low infiltration 321b in the regional area, and printhead 302b ink high infiltration 322b in region. In this embodiment, the print head 301b, which ink low infiltration, ink only in the regional area, and printheads 302a and 302b that ink high infiltration, ink only in region.

Now will be described in the regional treatment done for binary data black. On fig.12 and 12B schematically illustrates the stages of the regional processing. First is the process 5001 detection plot. Thus, the generated data plot black binary data, i.e. data 5003 region. Another area of the black binary data, i.e. data not associated with 5003 region, is a data 5103 regional area. In this embodiment, two pixels are selected as the boundary pixels. In addition, in this embodiment, the data are allocated to the separate printheads in accordance with the directions of scan start the print heads.

When data 5103 regional area subject to print in the area for which the direction of the scan start printing heads is the X, the data corresponding to the columns of the odd-numbered pages print the print head 301a, and the corresponding data columns with even numbers, print the print head 301b. When data 5103 regional area subject to print in the area for which the direction of the scan start printing heads is a trend-X, the data corresponding to the columns of the odd-numbered pages print the print head 301b, and the corresponding data columns with even numbers, print the print head 301a.

When data 5003 area subject to print in the area for which the direction of the scan start printing heads is the X, the data corresponding to the columns of the odd-numbered pages print the print head 301a, and the corresponding data columns with even numbers, print the print head 302b. When data 5003 area subject to print in the area for which the direction of the scan start printing heads is a trend-X, the data corresponding to the columns of the odd-numbered pages print the print head 302a, and the corresponding data columns with even numbers, print the print head 301a.

Now this ratio will be described with reference to fig.13-13O. As in the previously described options for implementing printed image shown on fig.13, 13H and 13L correspond to the data behind the printhead 301a. Similarly, the image on the fig.13D, 13I and 13M correspond to the data behind the printhead 302a, fig.13, 13J and 13N correspond to the data behind the printhead 301b, and images on fig.13F, 13K and 13O correspond to the data behind the printhead 302b.

On fig.13 shows a schematic showing the pixels that ejected the print media, on the basis of the binary data of the black. The dotted line running horizontally in the center of fig.13-13O, specifies the position in which the direction of the scan start printheads change.

The terrain above the dashed line is the area such as region (1) or (3) in figure 11, where the direction of the scan start printing heads is the X (right to fig.13-13O)and the area below the dashed line is the area such as region (2) or (4) in figure 11, where the direction of the scan start printing heads is a trend-X (left fig.13-13O). The process 5001 detection plot is carried out for the print data, and data generated 5003 region and data 5103 regional area.

From binary data black on fig.13, data 5103 regional area shown on fig.13. Of data 5103 regional area, columns with odd numbered in the area above the dotted line, for which the direction of the scan start printing heads is the X, appointed by the printhead 301a, and printed (fig.13). In addition, other data 5103 regional area, columns numbered in the area for which the direction of the scan start printing heads is the X, appointed by the printhead 301b and printed (fig.13). Of data 5103 regional area, columns odd-numbered pages in the field below the dashed line, for which the direction of the scan start printing heads is a trend-X stand out printhead 301b and printed (fig.13). In addition, other data 5103 regional area, columns numbered in the area for which the direction of the scan start printing heads is a trend-X stand out printhead 301a and printed (fig.13).

Data 5003 the field of binary data black on fig.13 shown on fig.13G. Of data 5003 region on fig.13G plot which corresponds to the columns of the odd numbered in the area above the dotted line, for which the direction of the scan start printing heads is the X, stands out printhead 301a. Printing is carried out according to the print-behind the printhead 301a (fig.13). Of data 5003 region, columns numbered in the area for which the direction of the scan start printing heads is the X, allocated printhead 302b, and print, the print head 302b on the basis of data (fig.13).

In addition, to plot data 5003 region, columns odd-numbered pages in the field below the dashed line, for which the direction of the scan start printing heads is a trend-X stand out printhead 302a, and print, the print head 302a on the basis of data (fig.13І). Of data region 5003, columns numbered in the area for which the direction of the scan start printing heads is a trend-X stand out printhead 301a, and print, the print head 301a on the basis of data (fig.13).

As a result, separate printheads use the following print data. The print image print head 301a, is a logical sum (fig.13L) regional area of data on fig.13 and data region on fig.13. The print image print head 302a, is a logical sum (fig.13) regional area of data on fig.13D and data region on fig.13І. The print image print head 301b, is a logical sum (fig.13N) regional area of data on fig.13 and data region on fig.13J. The print image print head 302b, is a logical sum (fig.13) regional area of data on fig.13F and data region on fig.13.

According fig.13-13O, the data to be separate print print heads 301 and 302 are thinned in the main direction of the scan (X direction in figure 1, or in a horizontal direction on fig.13-13O), and half of the print data is printed in a single scan. Thus, compared to the implementation of print all print data in a single scan, a period of time required to transfer data to the print head and the period of the re-filling of the ink can be cut in half. Thus, the speed of main scan the print head can be increased twice in comparison with the regime without thinning the print data. In the case when, for example, scanning resolution printhead is equal to 1200 dpi, and the speed of main scanning is equal to 25 ips, the number of generated points can be reduced to 600 dpi by thinning the data to be printed in a single scan. As a result, the speed of main scan the print head may increase up to 50 ips. Thus, we can reduce the total time of printing and can improve throughput for printing.

Regional treatment done for data black, will be described in more detail with reference to fig.14 and 14B. On fig.14 and 14B scan start direction is the X regions (1) and (3), or direction-X for the region (2). In this embodiment, to print a regional area (territorial area), ink ejected printhead 301a, and then ink ejected printhead 301b, regardless of the direction of the scan start X or-x Because both printheads 301a and 301b apply for ejection of ink, reduction of the number of points to be printed in a single scan, can be achieved through the ejection of ink from two print heads, which complement each other. To print region, all segments of the printhead 301a ink low infiltration. In this process, the print data is half are thinned, and other printheads carry out ejection at inelastic ink to Supplement the land, which had not been printed when the ink printhead 301a.

In addition, as shown in fig.14 and 14B, when the direction of the scan start is the X, during the first scan, print head 302a does not ejection at inelastic ink, and only printhead 301a ink. Printhead 302a does not apply to print when the X direction is the direction of the scan starts, because by the time the print head 301a starts ink low infiltration, the print head 302a, which ink high infiltration has passed its target print area. In this case, printing cannot be done by ejection first ink low infiltration, and then ink high infiltration, which are elements of the present invention.

After printing by ejection of ink from the print head 301a and complete a scan, scan direction is reversed, and printheads begin scanning toward-X. At this time, as shown in (2) on fig.14, printhead 302b ink high infiltration in region for printing.

As described above, regardless of the direction of the scan start X or-X, ink high infiltration ejected printhead 302a or 302b after deposition ink low infiltration. In this embodiment, the point of ink low infiltration, first, and point ink high infiltration, then overlap or are adjacent to each other on the media print on the basis of data printing, and the print data is at least contact with each other.

Because the ink low infiltration have a relatively low infiltration rate, inks remain on the surface of the print media until the ink high infiltration, print heads 302a and 302b, not on the surface of the media. In case of contact and mixing ink low infiltration and ink high infiltration infiltration rate of two kinds of ink are averaged. Thus, the infiltration rate ink is increased more than on the land where the printing is carried out only with the use of ink low infiltration. Implementing printing for one part of the region ( plot) the images so that the first ejected ink low rate of infiltration, and then ink with high rate of infiltration, you can achieve a high resistance to abrasion, compared to the implementation of print using only ink low infiltration, which have a low infiltration rate.

In addition, ink low infiltration, printhead 301b, ejected the ink low infiltration, which were previously printhead 301a. Because the ink low infiltration have low infiltration rate, inks remain on the surface of the print media until the ink, from the back of the print head will not be deposited on the surface of the media. When ink is low infiltration and ink low infiltration mix with each other on the surface of the media infiltration rate is not increased, and just formed two layers of ink low infiltration rate. Because the ink having a low infiltration rate, are used for printing the outer region (territorial area) image, you can increase the sharpness of the edges of the image, and you can improve the print quality of characters and lines. In addition, since ejection, first ink low infiltration, and then ink high infiltration, is to region, the optical density for region may increase, compared with the case when for print only apply ink high infiltration.

As described above, under this option, the implementation, the print head that ink low infiltration, and the print head that ink high infiltration, are divided into a set of segments. Accordingly, a set of nozzles, formed in each printhead, divided into these segments. To print the field, first one part of the printhead, which ink low infiltration, passes target print area, and then one part of the printhead, which ink high infiltration, passes this region. With the passage of the target print area, separate printheads ink in the target area print, hence the seal.

In General, it is assumed that there are four printheads, when printheads produce scanning and ink in the target area printing, first ink low infiltration, and then ink high infiltration, regardless of the direction of the scan. However, in the fourth draft of the implementation of the device is used in multi-pass printing, which produces an image several passes, scanning, and a set of nozzles, formed in some HP printheads, is divided into a set of segments. In addition, regardless of the direction of the scan printheads, focal area prints by ejection of ink from one part of the printhead, which ink low infiltration, with the subsequent ink from one part of the printhead, which ink high infiltration.

As described above, this embodiment for printing are two print heads, i.e. the print head that ink low infiltration, and the print head that ink high infiltration. Capacities for printing heads for the implementation of this option is slightly lower than for the print heads accordance with the variants of implementation of the first to the third; however, you can reduce the amount of printing heads. Thus, we can reduce the cost of production of the print device.

In this embodiment, the printhead, which ink low infiltration, and the print head, which ink high infiltration, a set of nozzles is divided into two segments; however, this invention is not limited to this configuration. The print head that ink low infiltration, and the print head that ink high infiltration, can be divided into two segments or more. Provided that the first ejection of ink low infiltration, and then ejection of ink high infiltration, separate printheads can be divided into more than two segments. In addition, this option requires that the implementation of the used two-pass printing; but the present invention is not limited by this example, and can also be used print or print. In addition, in this case, print heads just need to manage so that they first ink low infiltration, during the first scan for the target region of the print, and then ink high infiltration.

(The fifth option exercise)

Now will be described print processing, carried out device inkjet according to the fifth variant of the implementation of the present invention. For sites that correspond to sections in the variants of implementation of the first to fourth, also have the same reference designations used options for the implementation of the first to fourth, in order to avoid the need to provide a different description for these areas, and will be described below plots, which differ from the above.

In variants of implementation of the first to fourth describes an example, in which only black ink ejected print heads. In the fifth variant of the implementation of the presented example, which is parallel printing in black and color ink.

When the area to be printed using ink color, and the area subject to print using the black ink, are located near each other, for the processing of print, it is often preferable to neighbouring border areas of these regions were not marginal areas, and the areas. Way to generate the print data used in the implementation of the parallel print black and colored ink is shown in fig.15-15L.

Dashed plot on fig.15 refers to the data of a color image, and a black solid plot indicates the fig.8, binary image data to print, carried out with the use of black ink. Data 2103 regional area shown on fig.15, and data 2003 pane shows the fig.15F. If we compare data on fig.15 data for the second variant the implementation of the fig.8, when generating the print data they are treated as areas, and the right area, which is located near the area to be printed using ink color is treated as part of the regional plot in the implementation print using only black ink.

Now will be described print processing, carried out device inkjet according to the sixth variant of the implementation of the present invention. For sites that correspond to sections in the variants of implementation of the first to fifth, also have the same reference designations used options for the implementation of the first to fifth, in order to avoid the need for re-descriptions of these areas, and will be described below plots, which differ from the above.

The options for implementing from second to fifth, the print data is allocated aggregate print heads, and number of points generated each print head for one scan in the direction of scanning (the main direction of the scan)is equivalent to half the resolution of the data. With this configuration, speed of scanning printheads increases, and throughput for print increases. In addition to these effects, in this embodiment, the number of print heads for ejection ink low infiltration increases, in consequence of which the number of drops that must form each printhead in the main direction of the scan (X direction) can be reduced. As a result, you can increase the scanning speed of printing heads and can improve throughput for printing.

Now with reference to fig.16-16C will describe the design of printing heads and the order of the ejection ink. In this embodiment is applied only five print heads. Printhead 412, which ink high infiltration, is located in the centre, and printheads 411L, 411R, 413L and 413R that ink low infiltration, located on both sides of the print head 412. For this option, implementation, printheads 411L and 411R are left of the print head 412 on fig.16, and printheads 413L and 413R are to the right of the printhead 412 on fig.16.

When the ink jet printer for the implementation of this option prints, two of the print heads, which ink low infiltration, are first applied to the ejection of ink in region ( plot). When the direction of the scan of the print heads is the X, apply printheads 413R and 413L, and when the scan direction is the direction-X, apply printheads 411L and 411R. Then printhead 412 applies for ejection ink high infiltration. To print a regional area, one of the printheads for ejection ink low infiltration (411R or 411L for X, or 413L or 413R for directions-X), which is located behind in the direction of scanning is used for ejection of ink.

(The seventh)

Now will be described print processing, carried out device inkjet according to the seventh variant of the implementation of the present invention.

In this embodiment, the density of nonferrous material for ink low infiltration lower than the density of nonferrous material ink high infiltration, and only the ink low infiltration subject to ejection in the regional area of the target print area. Thus, he will often appear in the places where the ink raised on the surface of the media, and when, for example, finger, sometimes for color material on the elevated parts of the print media, it is probable that the printed image will be blurred, and the image quality will deteriorate. In addition, when the printed image is marked with the use of a token may be blurring of color and image quality will deteriorate.

Thus, in this embodiment, the density of nonferrous material ink low infiltration, subject to ejection in the regional area is reduced to non-ferrous material used for printing in the outer region, raised surface of the media. As a result, you can improve the resistance of the and abrasion resistance to external plot of the printed image. Below is described the ink used for the implementation of this option. The relationship of the individual components are expressed using mass parts (the sum of all components is 100 mass parts).

(Ink low infiltration 2)

Dispersion of pigment

20 mass parts

10 mass parts

Polyethylene glycol 1000

mass part 1

E100 (trade name of Kawaken Fine Chemicals Co., Ltd.)

0,03 mass parts

The remaining part of

(The eighth)

Now will be described print processing, carried out device inkjet according to the eighth variant of the implementation of the present invention.

In this variant will describe a case when the ink presented in the seventh embodiment, is used for the parallel implementation of the printing using black ink and print using color ink. As described for the fifth variant of the implementation, when the area to print in black ink and print colored inks are next to each other, in many cases, it makes sense to consider the boundary plot these areas as plot and not as a regional area. Thus, in this embodiment, the marginal section, where the area to print in black ink and print color ink contact with each other, is seen as plot and not as a regional plot, and for printing on the edge of the plot are applied not only ink low infiltration, but the ink high infiltration.

(The ninth)

Now will describe the treatment done device inkjet according to the ninth variant of the implementation of the present invention.

In this embodiment, as in the eighth version of implementation, described a case when the ink presented in the seventh embodiment, is used for the parallel implementation of the printing using black ink and print using color ink. As described for the fifth and eighth options for implementation, when the area to print in black ink and print colored inks are next to each other, in many cases, it makes sense to consider the boundary plot these areas in contact with each other, as plot and not as a regional area.

However, the ink jet printer under this option implementation, which uses ink low infiltration having a low density of nonferrous material, may not include the function definition, stand next to one another area to print in black ink and print with colored ink. On the site where the area to print in black ink and print colored inks are next to each other when the ink low infiltration are used for printing the regional plot area to print in black ink, ink low infiltration sometimes go out of the black print in the area of color printing. Thus, the sharpness of the black image tends to decrease. However, when the ink low infiltration having a low density of nonferrous material, apply in this embodiment, the image quality is not noticeable, even when black ink penetrate into the area of color printing. Thus, it is possible to counteract the deterioration of a color image, caused by the penetration of black ink in the ink colors.

(Other options for implementation)

In the above options for implementing describes an example, when printing apply slow drying of black ink and quick drying of black ink similar colors. The density of nonferrous material may vary for ink similar colors, but, as described above, it is preferable that the density of nonferrous material ink low infiltration was lower than the density of nonferrous material ink high infiltration. In addition, this invention is not limited to the above variants of implementation, and the ink low infiltration and ink high infiltration can be used for other colors for printing. Thus it is necessary to first ink low infiltration, and then ink high infiltration.

In addition, according to the above options for the implementation of the undertaken bidirectional printing. However, this invention is not limited to this type of printing, and can be unidirectional printing provided that the throughput compared with bi-directional printing is allowed. In this case, when a print head that ink low infiltration, is located in front of the printhead, which ink high infiltration in the direction of scanning, ink low infiltration can be induced in oblast to ink and high infiltration, and you can get the same results of the present invention.

In the above options for implementing illustrates, when the printing is carried out by scanning the print heads relatively media; however, this invention is not limited to this operation, and you can apply any configuration, provided that the printing is carried out by the relative motion between printing heads and the carrier of print. Thus, the print media can move relative to the print heads. In addition, this invention is not limited to the configuration presented in the above variants of the programs, which prepares the printheads for individual colors, and may include one or a set of printing heads with matrix nozzles for ejection ink of the individual colors.

"Print media" means not only the sheet used for normal printing devices, but also includes various materials such as cloth, polymer film, metal plate, glass, ceramics, wood and leather that accept ink.

Furthermore, the definition of "ink" (sometimes referred to as «fluid medium») should be applied as widely as the notion of "print". Ink is a fluid environment, applied by spraying on the print media to form the image, shape or pattern, to handle media, or for processing ink (e.g., coagulation or transfer to an insoluble form of non-ferrous materials in the ink is applied to the print media).

Although the present invention described with reference to the illustrative options for implementation, it should be understood that the invention is not limited to open illustrative options for implementation. The volume with the following formula of the invention must meet the wide interpretation to cover all such modifications and equivalent to the design and function.

1. Ink jet printer that contains the print head, capable of first ink and second ink, color similar to the color of the first ink and which have a higher infiltration than the first ink and used to print on print media; and a print management first ink and second ink from the print head, as if scanning, in which the print the head of the scans in the first direction, and when scanning, in which the print head scans the second direction that is opposite to the first direction of the controller printer ink for a given area, so ejected as the first ink, second and ink, and ink ejected to a second ink when both scans of the printhead as in the first direction, and in the second direction.

2. Ink jet printing of claim 1, wherein the printhead includes the first matrix jets, capable of first ink, the second matrix nozzle capable of second ink, and a third matrix jets, capable of first ink, and in the printhead second matrix nozzles is located between the first matrix nozzles and third matrix nozzles in the first direction.

3. Ink jet printer in paragraph 2, in which the controller printer ink from the print head for a given area, so that the first matrix nozzles and the second matrix nozzles are used during the scan specified in the first direction, where the first matrix nozzles located in the front, and the second matrix nozzles and the third matrix nozzles are used during the scan in specified the second direction, where the third matrix of nozzles is ahead.

4. Ink jet printer on item 3, in which the controller printer ink from the print head for a given area, so that the third matrix nozzles not be used when scanning specified in the first direction, and the first matrix nozzles not be used when scanning specified in the second direction.

5. Ink jet printer according to claim 1 in which the controller printer ink from the print head for a given area, so the first ink and second ink ejected in the same position and overlap.

6. Ink jet printer according to claim 1 in which the controller printer ink from the print head for a given area, so the first ink and second ink ejected in adjacent positions.

7. Ink jet printing of claim 1, wherein the color of the first ink and color second ink is black.

8. Ink jet printing of claim 1, wherein the first ink and second ink include pigmented materials.

9. Ink jet printer according to claim 1 in which the density of nonferrous material for the first ink lower than the density of nonferrous material for the second ink.

10. Ink jet printing of claim 1, wherein for printing the print head has many scans for the specified area.

11. Ink jet printing of claim 1, wherein edge area is an area, which is adjacent to the area where the first ink and second ink is not ejected, and the scope is area that is adjacent to the regional area.

12. Ink jet printing, paragraph 11, in which the controller printer ink, so that the first ink ejected and the second ink is not ejected in the outer region.

13. Ink jet printing of claim 1, wherein the first ink and second ink ejected alternately in each pixel of the specified area.

14. Way inkjet media, according to which the print head, capable first ink and second ink, color similar to the color of the first ink and which have a higher infiltration in the print media than the first ink is used to print the image on the media of printing in this way inkjet includes: stage print management for control first ink and second ink from the print head, as if scanning, in which the print head scans in the first direction, and when scanning, in which the print head scans the second direction that is opposite to the first direction, at this stage of the management of the print control ink for a given area, so ejected as the first ink, second and ink, and ink ejected to a second ink when both scans of the printhead, as in the first direction, and in the second direction.