Magnetic plate for printing of optical effects
FIELD: printing industry.
SUBSTANCE: invention relates to the field of printing industry. A magnetic plate comprises a sheet or a block from magnetised composite material, having multiple areas arranged along its surface. At the same time the first area on the specified surface is magnetised by exposure to magnetic field with the help of a magnetising matrix of certain shape, having an external surface in the form of an image, a logo or a symbol. Besides, the first area is magnetised so that it is shaped accordingly to the specified image, logo or symbol, and creates the first magnetic field with the specified direction, and the second area on the surface of the sheet or the block that surrounds the specified first area is either not magnetised or is magnetised differently compared to the first area, as a result there is contrast provided between the created or magnetic fields.
EFFECT: group of inventions makes it possible to simplify manufacturing of a magnet and to increase extent of flexibility in respect of the magnetic field created by the magnet.
16 cl, 33 dwg
The technical field to which the invention relates.
The present invention mainly relates to a magnet used in inks and other inks, which contain particles or flakes, capable under the influence of a magnetic field to acquire oriented position, and more specifically the present invention relates to the formation of magnets made of magnetic material, oriented in many different directions under the influence of the applied field, as well as the use of such magnets as printed forms.
The term "sheet"used hereinafter in the present description of the invention, means a flat thin sheet, and in the preferred embodiments of the present invention, this term describes a flexible sheet, however, the term "sheet" is not restricted to only this value.
The term "plate"used throughout the present description of the invention, is used here to denote a rigid or flexible plate and comprises a thin flexible sheet, for example, such as a sheet of composite material, able to be magnetized, or rubber magnetic sheet, better known after its magnetization as "fridge"-magnet.
The term "printing plate", applied Yes is it in the text of the present invention, means plate, through which you will be printing images, symbols or logo printing or any other printing ink, which contains scales, is able to navigate under the influence of a magnetic field. Such a printing form by itself does not transfer ink or some other printing ink, but it has the ability to provide the movement of the flakes or particles contained in the printing or other printing ink, thereby to form a clear imprint.
The level of technology
All patents and patent applications cited in the present description of the invention, included in the content of this description of the present invention through appropriate references made in any order.
Known printing carried out by using a printing or other printing inks containing magnetic plates, dispersed in a liquid printing ink or binder substance colorful cover. In such cases, the practical application of this method of printing these plates under the influence of a magnetic field is given oriented position for which such typographical or other printing ink on the substrate is exposed to a magnetic field. On those who use period some examples of implementation of such a printing method disclosed passerines and other (Raksha et al.) in the descriptions of the invention to applications for U.S. patent No. 2006/0198998, 2006/0194040, 2006/0097515, 2005/0123755 and 2005/0106367.
In the descriptions of invention to the U.S. patent nos US 6,808,806, US 6,759,097, US 6,818,299 and US 6,838,166 disclosed scales, capable under the influence of a magnetic field to acquire oriented position, as well as the possibility of application of magnets under the influence of a magnetic field which these scales is given oriented position in the output image. More specifically, in the description of the invention to the U.S. patent No. US 6,808,806 opens the possibility of using flexible magnet having a cutout in the form of the letter "F" and intended to use it when printing. In this embodiment, this invention field propagating from the area that surrounds a cut-out letter "F"was homogeneous, and it was directed perpendicular to the surface of the letter "F". Scales that were above the cut part, where he observed the absence of the field lay on the surface is essentially flat. Although this variant implementation of the invention enables the obtaining of interesting images, however, this invention allows for the presence of some additional features that were unavailable in the application of the magnet, about daysago homogeneous field.
In some industries has been applied staining using magnetic powders for the completion of the processing and application of decorative coatings. Method of forming image on any product under the influence of magnetic fields is the subject of the invention under U.S. patent number US 5,630,877. This image get in the relevant product by pre-applying to a layer of paint, which is a mixture of coloring medium with magnetic non-spherical particles, with the subsequent imposition of this layer is the magnetic field, which in its form corresponds to the image, which preferably will be formed. Propagating field in this case comes from the magnets mounted on the underside of the substrate on which the layer of damp fresh paint. Once under the influence of the magnetic field, the particles will become oriented position, it is cured within a binder, the coating of paint.
In the description of the invention to the U.S. patent number US 6,103,361 disclosed substrate with a put upon them by the figure, which are used in the production of decorative culinary products and are formed by coating on a substrate base, having a floor and composed of a mixture of fluorocarbon resin and magnetic is eshek, with the subsequent excitation of the magnetic field, resulting in polymer composite coating formed from the image. The figure is influenced by the magnetic force, which flows through the edges of the magnetized matrix, located under the specified base having a floor, while having the effect of inducing image.
In the description of the invention to the U.S. patent number US 6,759,097 disclosed various methods and devices for acquiring images on the surfaces with the coating. These methods include applying a layer of curable magnetization pigment coating in liquid form to the substrate and subsequent election by imposing a magnetic field on parts of this pigment coverage in order to selectively modify the orientation of the magnetic particles or flakes in these areas, followed by curing reoriented particles or flakes in such a non-parallel to each other in their position so the surface appears a figure, for example, such that simulates three-dimensional image.
Pigment coating may contain various interference and no interference magnetic particles or flakes, such as magnetic pigments that change its color.
In U.S. patent No. US 3,853,676 declared pigme the oriented film, representing the material in the form of a film containing oriented magnetic pigment, which, in the field receives focus.
In European patent number EP 0710508 A1 discloses a method of obtaining a layer that creates a three-dimensional effects due to the orientation of the magnetic plates.
In European patent number EP 1493590 A1 describes a device and method designed to transfer a predefined magnetic pattern on the document, printed in optically variable magnetic ink. This device is in the form of a substrate made of composite material, which is a permanent magnet, the surface of which is engraved the image corresponding to image the desired definitions. This magnetic material is magnetized in the direction perpendicular to the surface. The irregularities formed on the surface as a result of its engraving, cause changes in the direction and intensity of the resultant magnetic field. These changes are the reason that the magnetic particles have a different orientation within different portions of the layer of wet paint deposited on the surface of this substrate, and thus allows the formation of the image, which in its form corresponds to the configuration for the purpose, which has an engraving.
The authors of this invention, it was found that the printing process carried out in accordance with the technical solution proposed in European patent number EP 1493590 A1, has certain limitations. For example, in the case of application of such printing inks that change color, provides only a very weak effect in terms of the color change. There is even a complete disappearance of the properties of the color change, if the magnetic pigment particles in the layer of wet paint, directed along the magnetic field lines, in a direction essentially perpendicular to the surface of the document.
However, it should be noted that the color changing effect is manifested outwardly best (characterized by the large shift in color spectrum and high color saturation) in the case when the particles are arranged in parallel or almost parallel to the surface of the substrate. Thus, the properties change the color of an image printed by using the device disclosed in the description of the invention the European patent # EP 1493590 A1, leads to the fact that the use of magnetic ink that changes color, becomes essentially useless in relation to the printing of documents supplied remedies.
In order nastojasih the invention is to provide such a magnet, which is more simple to manufacture and has a greater degree of flexibility in relation to the magnetic field created by the magnet.
This magnet does not require expensive and time-consuming etching or removal of material in order to modify the magnetic field created by him.
The object image, logo or designation is inside the magnetic material, which is shaped in the form of a block or sheet, making this magnet is to provide such a field, which will fully meet the specified object, logo or designation in the case when the field will be used for orientation of the scales contained in the printing or other printing ink.
The image that is inside the magnetic material is invisible to the eye, but it is, however, encoded in the magnetic material in such a way as to generate a field that corresponds to the object, logo or symbol that is used to "encode" magnetic material.
Such an object, logo, or symbol that is encoded in the magnet, will not be able to see, but they, nevertheless, do exist, while ensuring the receipt of such a magnetic field, which allows you to Orient the flakes on the substrate and experiencing the impact of this MAG is itogo field, so with absolute precision, it was possible to reproduce the specified object, logo, or symbol.
Normal "fridge"-magnet can be encoded magnetic information so as to change the direction of the resulting magnetic field, in order to ensure the formation of a desired image.
Such a coded magnet may be made of flexible magnetic material, and it can be placed on the drum, to use for printing images inside a liquid printing or other printing ink, on the substrate, through the orientation of the particles in such a way as to display the encoded magnetic information.
As will be shown herein below described, in the known methods used in the art for applying a magnetic field to typographical or other printing inks, which contain flakes, measurable orientation, provides for the use of recessed or engraved magnetic fields. In contrast, according to the present invention, provides for the use of the magnet, which has a flat surface, while the presence of the magnetic and non-magnetic or differently magnetized areas are provided within a single monolithic magnet, through which it is carried out and the orientation of the flakes, forming the image when subjected to a magnetic field to the liquid containing scales amenable to orientation under the influence of a magnetic field. Preferably use a flat matrix, or magnetic printing head or plate, in which the magnetization undergoes internal volume allows you to completely eliminate the problems associated with the manufacture and use of three-dimensional magnetic forms. When using a flat matrix, you can ensure a firm contact at the moment of contact it with the appropriate substrate, and even if at this moment the site of contact will be applied some pressure, the obtained result is essentially always the same. This cannot be guaranteed when using an embossed or engraved three-dimensional magnetic printing plate. In addition, within the printed image can be obtained more clear boundaries and with greater ease than when using embossed or recessed magnetic printing forms.
Disclosure of inventions
In accordance with the present invention features a printed form that contains: the magnetized composite material having a multitude of areas on its surface, while the magnetized composite material within one or more p is pout areas magnetized specially selected way resulting in these one or more first areas arranged transversely of the surface of the sheet, provide a first magnetic field having a given direction, and the magnetic material in one or more second fields or not magnetized or magnetized differently than specified one or more first areas, providing contrast in the generated their magnetic field.
In accordance with another feature of the present invention proposes a method of forming a magnet, providing for the following operations:
getting a body from a material that is magnetized;
accommodation magnetizing matrix so that turned out its surface with magnetic conductivity, adjacent to the front surface of the sheet or block made of magnetic material, and a supply of magnetic charge through the magnetizing matrix for the formation of the magnet within the magnetic material, which corresponds to the features of facing outwards metal surface magnetizing matrix.
In additional embodiments, the implementation of the present invention provides for the use of the printing form, in which:
composition career the first material is presented in the form of a sheet or block, made of this material;
the one or more first regions are magnetized in the form of a sign or visible signs;
the one or more second regions are magnetized essentially homogeneous so the scales in typographical or other printing ink, adjacent to said one or more second regions, lie flat or in a standing position on the sheet that they cover;
this particular sheet is a flexible sheet of composite material;
while specified composite material is an isotropic or anisotropic flexible material, such as a powder Re-Fe-B embedded in utverzhdennuyu binder resin;
this particular sheet of composite material includes a magnetic material uniformly distributed along and within the working side of the sheet, and the first region of the specified one or more first areas of the sheet is magnetized specified image by superimposing a magnetic field through the composite material within the first region, whereas in some other areas along the sheet, this magnetic field is imposed, resulting in the first region to form a first magnetic floor is, coming from her, and in other areas along the surface of the specified sheet, this magnetic field is missing or different in intensity or direction of magnetic fields emanating from other areas along the surface of the sheet;
while in the above one or more second regions has a second magnetic field with lines of force of the second magnetic field is oriented differently than the lines of force of the first magnetic field;
the print form is intended for use in the field, giving the orientation of the scales amenable to orientation, in liquid or viscous printing ink or printing ink, and the working part of the printing form is used so that the first field was aligned flakes on the substrate located in the first area, so that is the formation of the designation in the form of a sign or visible graphic image, which is visible in contrast with the scales on the substrate at its part which closes the second area of the printing form;
the first magnetized region through the contact of the sheet surface in the first area with the metal matrix, the outer surface of which has a predefined shape, and which has a magnetic charge;
the shape of the metal on the outer surface of the matrix is displayed in the magnetic material, inside the composite sheet material;
the magnetic field emanating from the matrix, is reproducible within the first region of the magnetic material;
in the metal outer surface of said matrix has a first metallic region that comes into contact with the surface of the sheet, and other areas on the outer surface of the matrix are arranged with a gap relative to the surface of the specified sheet, while the first metal region in contact with the sheet; and
print the form in which the specified first metal region form a sign, mark, or visible text or letters.
Brief description of drawings
The following is the detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings, on which:
Figa - drawing-known technical solutions engraved printed magnetic form engraved with the number "20" and intended to conduct orientation scales with image acquisition figures 20.
Fig.1b - side view in cross section of the magnet shown in figa.
Figs shows an image of the numeral "20", made with the use of the printing magnet together with the reflective scales contained in the blue printing ink on a dark background and received in the result is in what particles around the number "20" adopted standing, essentially vertical position.
Fig.1d shows an image similar to the image presented on figs, and received on a dark background due to the fact that the particles around the number "20" adopted standing, essentially vertical position.
Five - engraved drawing a magnetic form, made in the form of a sheet and is designed to obtain images such as those shown in figs and fig.1d.
Fig.1f is a view in cross section on the magnetic field emanating from engraved magnet shown in figa.
Figa - drawing-known technical solutions are embossed print magnet form with engraved number "20" and intended for carrying out the proper orientation scales with image acquisition figures 20.
Fig.2b - side view in cross section on the dotted line on figa for magnet shown in figa.
Figs shows an image of the numeral "20", made with the use of the printing magnet together with the reflective scales contained in the blue printing ink.
Fig.2d shows an image similar to the image presented on figs, and received on a dark background due to the fact that the particles around the number "20" adopted standing, essentially vertical position.
File drawing in cross section for the magnetic field, coming from engraved magnetic sheet, designed to obtain images such as those shown in figs and fig.2d.
Fig.2f - embossed detailing magnetic printing plate similar to that shown in figa.
Figa - drawing of a variant of implementation of the present invention, illustrating the metal matrix and the sheet is susceptible to magnetization.
Fig.3b - side view in cross section of the magnet and two matrices on both sides of the magnet shown in figa.
Figs shows an image of the numeral "20", made with the use of the printing magnet together with the reflective scales contained in the blue printing ink, high-contrast reflective background regarding the numbers "20".
Fig.3d shows an image similar to the image presented on figs, but received on a light background due to the fact that many of the particles that are outside of the location of the digits "20", took a flat, essentially horizontal position.
File - drawing of two matrices of magnetization of the sheet, measurable magnetization and shown in figa, what makes such a magnetized sheet can be used for imaging, for example, such as the image shown on figs and 3d.
Fig.3f - drawing of a pair of matrices that are hosted on aidou side of the magnetic sheet material, prepared for the magnetization, while the corresponding electronic equipment necessary in order to "charge" of the matrix, on this drawing is not shown.
4 is a schematic diagram of a bipolar working as magnetization, where the magnetization of the sheet of material susceptible to magnetization, in pre-planned locations along the sheet, on which after magnetization remain magnetized region located between the magnetized areas.
5 is another variant of the working position of the magnetization, which has a single-pole magnetizing device for magnetizing sheet of material susceptible to magnetization.
6 is another embodiment of the working position of the magnetization, which has one matrix that is used for magnetizing sheet of material susceptible to magnetization.
7 is a diagram illustrating the magnetic field lines passing through the matrix, and the sheet of material susceptible to magnetization, and, in addition, to illustrate the magnitude of the density of magnetic flux along the sheet of material susceptible to magnetization.
Fig is a drawing illustrating the magnetic field lines emerging from the magnetized sheet, and showing the absence of a field in the fields, OCD is concerned with the magnetized region.
Figa - drawing, illustrating two different magnetic matrix and the sheet is susceptible to magnetization, intended for printing images, printing ink or printing ink.
Fig.9b - cross section.
Figs and 9d image printed using a magnetized sheet shown in figa, and the magnetization of this sheet were applied two different matrix.
File diagram of the composite sheet rubber magnet after magnetization by means of two matrices, which have figure 20 serving on their end surfaces.
Fig.9f - drawing showing the selective magnetization of the sheet, measurable magnetization, which is depicted on file.
Figure 10 - diagram of the magnetic field emanating from the magnetized sheet having a bipolar orientation, and used for printing images shown on figs and 9d.
11 is a drawing of a known technical solutions, representing the views of the magnetic unit, designed to cut from it a matrix having the form of figures 1.
Fig illustrates paramagnitnyi sheet magnet.
Fig illustrates the image obtained using paramagnitnogo sheet magnet, shown in Fig.
The implementation of the invention
Consider now known technical resh is the presented at figa-1f, where figa shown engraved magnet, which is used to obtain a fingerprint on the substrate, covered with wet ink or printing ink that contains particles or flakes, capable under the influence of a magnetic field to acquire oriented position. After the substrate is covered with printing ink or printing ink, a substrate is placed the magnet 10, and scales, in typographical or printing ink, are guided along the magnetic field lines, forming a figure 20. As shown in figs, reflective scales, such as flakes of Ni, having a silvery appearance and distributed in a binder medium blue color, focus, forming a figure 20. These scales are color matrix and scales, which are within the background for the figures "20", and within themselves digits, have a dark appearance. This effect is achieved due to the fact that the scales are standing upright, and all that can be seen is only the binder medium blue color that fills the gaps between these scales. A similar effect is illustrated in fig.1d using scales that change color. Magnetic field, depicted on fig.1f that comes from engraved magnet and passes through the boom of the author substrate, the largest part is located perpendicular to the paper. Therefore, most of the scales, except for those that lie along the path of the digits "20", come to a standing position. The magnetic field lines at the edges of the engraving curved, and here the scales occupy oriented position in a curved magnetic field, forming quite noticeable to the number "20". When the reflective scales lie flat along the substrate, they tend to reflect light and therefore appear bright. When the reflective flakes take on the substrate standing position, they may not reflect the incident light, since they are located so that only their edges capable of reflecting incident light, but not flat reflective surface. This is the disadvantage of this variant is known technical solutions. The most reflective and changes its color flake form, as shown in figs and 1d, only a dark background.
Engraving magnet carried out by physical methods, is a very expensive event, and, as mentioned above in this description of the invention, adjustment of the magnetic field is obtained in this case is very limited. For example, as shown in figa-1d, the field is homogeneous and has the slight pressure from the beginning direction, with the exception of a zone that corresponds to the engraved part. However, this distribution of the field lines is often undesirable. Even the engraving of the magnetic sheet, which is shown in figa, is expensive and requires a lot of time. In addition, errors in the engraving process, you will then be correct. You only have to remove material, and such removal becomes practically irreversible.
The printed image obtained by applying the known sheet magnet, shown in figa-2d are reversed compared with the images shown on figa-1d. Instead subjected to a magnetic sheet corresponding to the engraving, it is embossed around the digits "20", which is acting against the bottom of the recess formed in the magnet. Simulation of magnetic fields on file, shows that the lines of force directed vertically with respect to the number 20 and to the area of its background. This power line is curved on the edges of the recess. As a result of this magnetic particles occupy a vertical position relative to the substrate within these specific areas on the top of figures 20 and where the imprint of the top and bottom are dark lines. However, the magnetic field in the limit of the areas where wet ink is top grooves, it will be very weak due to the fact that there is some distance between the paper substrate and the upper part of the magnet on the bottom of the depression. Such a weak magnetic field will not be able to provide appropriate orientation there are particles, and they will retain the non-oriented position within a layer of wet binder printing ink. The resulting optical effect is manifested in the form of uneven light background, on which stands a dark figure 20.
Embodiments of the present invention presents on figa-3d. It should be assumed that they are much more perfect compared with magnets and samples of the respective images obtained using these magnets, which are shown in figa-1d. On figa shows a magnet 30b, in which the location of his "magnetic charge" is limited to the area that has the shape of figures 20 and passed this "charge" the magnet 30b from the matrix 32A, resulting in the magnetic properties of the magnet are manifested only within the zone having the form of figures 20 and is formed of such a magnet inside the actual magnetic material. Two matrices 32A and 32b made of mild steel, made in such a way that on one matrix 32A has a protruding figure 20, on the other Mat is itzá - mirroring figures 20. Then both of these matrices have been brought into contact with the non-magnetized sheet 30A from different sides, located between them, as shown in fig.3f. The sheet 30A is not magnetized flexible flat magnetic composite material is able to be magnetized under the influence of a strong magnetic field or "charge".
On fig.3f matrix 32A and 32b shown in the position which they occupy before the magnetization of a flexible magnetic composite material 30A.
Refer now to figure 4, which shows the magnetized region, here represented by a linear chain of such magnetic fields 109 on the plate or sheet 104. Each magnetic region has an internal magnetic structure, which shape corresponds to the shape of the matrix 105 and 106 in contact with the sheet 104. The magnetization of these areas can be carried out using a two-pole magnetizing device, as shown in figure 4, or by using a single-pole magnetizing device shown in figures 5 and 6. Pole pieces 102 and 103 of the North and South poles of the magnetizing device 101 can move in the direction of the coordinate axes X and Y on the surface of the sheet unmagnetized flexible material 104, as well as up and down about it. In another embodiment, n is standing the invention, the sheet 104 can be moved between the pole pieces of the magnet. In this embodiment, the present invention is required to provide relative movement between the flexible material 104 and pole pieces 102, 103. In yet another embodiment of the present invention, the magnetic pole can be operated in such manner as provided for the process of hot stamping parts with a reciprocating elements of the production equipment, that is, the sheet 104 momentarily stops, and at that moment matrix 105 and 106 are slightly pressed against the sheet 104 on both sides, and then discharged him back after approximately one second. Matrix 105 and 106 having an appropriate shape, made of soft magnetic material. Matrix 106 is a mirror image of the matrix 105, as well as in relation matrices 32A and 32b shown in figure 3. Matrix attached to the pole tips and can operate in contact with a flexible magnet by adjusting the distance between the pole pieces 102, 103. In the process of magnetization of the plate 104 moves of pole pieces together with matrices along the plate to the place where you want to spend the magnetization, in this place pole pieces together with the matrices are in tight contact with each other through the plate 104. P the following of this power supply magnetizing device 101, resulting in between matrices creates a magnetic field. Under the influence of the magnetic field created is the magnetization of the plate 104 in region 107, and the direction in which the magnetization perpendicular to the plate surface. The typical amount of time required to conduct such an individual process of magnetization is about 1 second. The form of the magnetized region 107 corresponds to the form of a matrix. Upon completion of the process of magnetization in a specific area of the pole pieces move apart in different directions, and moves to the next position on the plate, leaving no magnetic gap 108 between magnetized regions 109. In many cases, the matrix has a relief structure which is in contact with the machined plate, i.e. the number "20". The presence of engraved areas on the matrix leads to the fact that the distance between the source of the magnetic field and plate somewhere more, somewhere less. This allows the magnetization, providing the gradient magnetic fields across the plate.
Instead of the two-pole magnetizing device, shown in figure 4, can be used two single-pole electromagnet, as shown in figure 5, which can provide the same Ref who that effect.
As shown in figure 5, provides for a number of series-connected auxiliary magnets 201 and 202, which are connected to power sources 203 and 204 and the computer 205, which provides positioning of the electromagnets along the plate 205, as well as their on and off. Matrix 206 and 207 having an appropriate shape, is fastened to the magnet 201 from below and to the magnet 202 from above. The magnets 201 and 202 are mounted on a single straight line on both sides of the plate 205 so that their center lines coincide. The magnets are moved along the axes X-Y coordinates relative to the surface plate 205. In the place where you want to make the magnetization, the magnets are moved towards one another so close that they shared between them only the thickness of the plate 205. Then turn on the power, and the magnets create a magnetic field that for one second magnetizes the selected area on the plate. Upon completion of this process, the magnets are moved to the next position, leaving the magnetized region 208.
For magnetizing plate can also be used and a single-pole magnet. The scheme of such a system is shown in Fig.6, where the electromagnet 201 is connected with the power source 203 and computer 205. The substrate 205 has a magnetized region 208, repeating a form of a matrix 207.
About the contact again to figure 3 and 4, where it is shown that the applied magnetizing device has a North pole and a South pole, and between these poles is flat magnetized material, it should be noted that figure 7 shows a diagram obtained by simulation conducted using the computer, which shows the magnetic field passing through such a structure, located inside the magnetic charger (magnetizing device), and marked on the diagram as "the magnetic field produced in the process of magnetizing the unmagnetized magnetic composite material". From this diagram it is clear that the magnetic field passes through the matrix and penetrates through the matrix, which serve as magnitoprovodami, and this field is mainly passes through the flat area of the magnetic material, which is enclosed between matrices, not essentially no "charging" the surrounding area of this flat sheet. The density value of the magnetic flux within the entire sheet is shown graphically in the lower part of this figure.
Fig illustrates field emanating from the sheet 30 is processed according to the scheme shown in Fig.7, with application of a metal pole or matrix, shown in fig.3f. When the substrate is coated with wet ink containing magnetic particles is, placed on top of the magnet 30 with the number "20", selectively magnetized in a sheet of magnetic rubber, is formed on the substrate light and smooth background, which is very clearly visible dark figure "20". These latter samples should be attributed to a very advantageous among known objects from among discussed herein above described, which were made with embossed or engraved magnets. The magnetized portion of the sheet 81 is indicated mostly vertical lines of force of the magnetic field. Power line 82 of the magnetic field emanating from a worksheet within the air space 83, are located above the magnet 30. In addition, it is shown that in the non-magnetized portion of the sheet, the magnetic field lines are missing.
Contact figa-9f, which presents an alternative configuration and method of printing produced by implementing a two-step process. On figa shows the sheet magnet 93 that carries encoded figure 20. In addition, it is also shown magnetized sheet a that you want to use after scales will acquire orientation in the appropriate directions under the action of the sheet magnet 93. Image obtained in the result, shown in figs and 9d. Both phases are considered a two-stage process more clearly presented the ENES on file and 9f. So, five well illustrated matrix 90A and 90b with numbers 20, received them by stamping, which is used for the magnetization of the sheet held thereby to encode it figure 20. Further, the same magnetic sheet is subjected to additional magnetization carried by magnets a and 91b. The result is magnetized sheet magnet, which is used for orientation of the flakes in the samples presented on figs and 9d. In order to facilitate the understanding of these beings of the present invention and to simplify the actual description, the source of the magnetic "charge" is not shown, although such source is required to connect to all parts marked positions 90A, 90b, or a or 91b. In an alternative embodiment, the present invention can be applied to the magnetization of the sheet 93 a very strong permanent magnets in the form 90A, 90b, a, 91b.
Figure 10 illustrates the magnetic field within the magnetized sheet 93 in the case when the magnet is formed in this sheet has a bipolar orientation.
On Fig presents an alternative implementation of the present invention, which provides for alternating magnetization of the so-called "fridge-magnet", or pre-magnetized magnet within the its region is, where it is required to do. Despite the fact that the image of figures 20 and the line of magnetization cannot actually be seen, however, Fig still shown, where the magnet is located within a block or sheet. On Fig presents the pattern image printed using a magnet, shown in figure 10. The line of magnetization, shown inside fridge"-magnet, are duplicated on the image that is presented on Fig, because the scales during the formation of this image get the orientation in the direction along the magnetic field lines.
Magnetization of fridge-magnet in the form of figure 20 can be carried out with the help of very strong permanent magnets or by pointing magnetic "charge" through one or more matrices. It should also be noted that these "frig"-magnets usually are magnetized so that when we got rows of magnets arranged at intervals and located within the same monolithic block or sheet. As shown, these magnets can paramagnetically so that they become magnetically encoded relevant designations, for example, such as numbers or letters, or logos or any other images.
In contrast, figure 11 presents an illustration, the belt is shining known technical solution, aimed at addressing the issues of forming the digit "1" in the form of a solid magnetic unit. In this case you must cut out the matrix of the solid block. If such a matrix is incorrectly cut, or if such a magnet appeal with insufficient caution, he could easily break or crack.
In contrast to what is specified here above, the magnet is formed of a flexible magnet, has a sufficiently high strength, and easy to manufacture. Magnetic shape is attached to him through the influence of the magnetic field, and such a flexible magnet.
Of course, can be provided by numerous other embodiments of the present invention, which are within the essence and scope of this invention.
In embodiments implementing the present invention discussed herein above the description of the invention, the printing image is produced using a magnetic sheet or block, designed to be oriented in the desired direction of the scales, which have the ability under the influence of a magnetic field to acquire oriented position. It should be understood that it is possible to use scales of various kinds, for example, such as: reflective flakes; multilayer flakes; Cheswick is, which have the ability to change color; diffractive flakes; flakes, which are characterized by any hidden their peculiarities; flakes, which have a high absorption capacity; and any other types of scales, which in a magnetic field capable of acquiring oriented position.
1. Magnetic printing form containing:
the sheet or block of magnetic composite material having a multitude of areas on its surface, with the first region at the surface of the magnetized by exposure to a magnetic field by using the magnetizing matrix of a particular form, having an outer surface in the form of an image, logo or designation, and the first region is magnetized so that it has a shape corresponding to the specified image, logo or symbol, and generates a first magnetic field with the specified direction, and a second area on the surface of the sheet or block surrounding the first specified area or not magnetized or magnetized differently on compared to the first region, providing a contrast between the magnetic fields created by them.
2. Magnetic printing form according to claim 1, in which the specified sheet or block is a flat sheet with a continuous smooth surface, when atomoxetinee first magnetic field originates from a continuous smooth surface in the specified direction.
3. Magnetic printing form according to claim 2, in which the flat sheet is a flat sheet, with the specified second region providing a second magnetic field of high intensity or direction from the first magnetic field and second magnetic field originates from a continuous and smooth surface.
4. Magnetic printing form according to claim 2, in which the magnetized composite material includes magnetic powder, essentially uniformly distributed around the flat sheet.
5. Magnetic printing form according to claim 1, characterized in that it is designed to Orient the flakes, oriented under the action of magnetic fields and in typographical or printing ink on the substrate, while the first magnetic field orients the scales located in the first area, in the form corresponding to the image, logo or symbol that visually contrasts with scales, which are oriented under the action of a magnetic field, the second field.
6. Magnetic printing form according to claim 5, in which the second region is magnetized essentially uniformly and provides a second magnetic field of high intensity or direction from the first magnetic flakes in the second region under the action of the second magnetic field lie flat or take a standing position n of the substrate.
7. Magnetic printing form according to claim 1, in which specified a direction perpendicular to the surface of the sheet or block.
8. The method of forming a magnetic printing plate containing the surgery:
a) obtaining a sheet or block of material, which is able to be magnetized;
b) obtaining magnetizing matrix of a particular form, having an outer surface in the form of image, logo or designation;
c) placing the outer surface of the specified magnetizing matrix of a particular form near the surface of the sheet or block and
d) the magnetic field using the specified magnetizing matrix of a particular form for the magnetization of the first region on the sheet or block form corresponding to the specified image, logo or symbol.
9. The method according to claim 8, in which the operation (C) includes bringing the outer surface of the magnetizing matrix of a particular form in contact with the surface of the sheet or block.
10. The method according to claim 9, in which the outer surface of the magnetizing matrix of a certain shape is non-planar, and the operation (C) includes bringing the most extreme part of the non-planar outer surface of the magnetizing matrix of a particular form in contact with the surface of the sheet or block.
11. The method according to claim 10, in which the sheet or the POC is a magnetized sheet magnet, in over 40% of magnetic field lines are oriented in the same direction, and the operation (d) is applied a magnetic field to pereaminirovania first area.
12. The method according to claim 9, in which the operation (b) includes obtaining a second magnetizing matrix of a particular form, having an outer surface in the form of mirroring the specified image, logo or designation, and the operation (C) includes simultaneously bringing the outer surface of the second magnetizing matrix of a particular form in contact with the opposite surface of the specified sheet or block.
13. The method according to claim 8, in which the magnetic circuit Board is designed to Orient the flakes, oriented under the action of magnetic fields and in typographical or printing ink on the substrate, the first region provides a first magnetic field having a direction that orients scales located in the first area, in the form corresponding to the specified image, logo or symbol.
14. The method according to claim 8, in which the magnetizing matrix of a particular form is made of magnetic material.
15. The method according to claim 8, in which the operation d) create a magnetic field in the direction perpendicular to the surface of the sheet or block.
16. the manual of claim 8, optionally containing an operation, which move the sheet or block relative to the magnetizing matrix of a particular form, and then repeat the operation (C) and (d).
FIELD: process engineering.
SUBSTANCE: proposed method of producing plate for intaglio printing consists in programmed engraving of the plate made by computer-aided engraving tool. Said not engraved plate makes intermediate plate for plate with polymer layer for intaglio printing. Note here that said intermediate plate polymer layer is engraved by computer-aided engraving tool.
EFFECT: high-resolution engraving, reduced production time and costs.
10 cl, 15 dwg
FIELD: printing industry.
SUBSTANCE: proposed sheet comprises at least one first area with first roughness and at least one second area. Second area has second roughness and/or recess preset minor with respect to first roughness and/or preset elasticity modulus, minor with respect to said first area. Second area is arranged in the printing field and formed as a receiving element for one second area of optically variable element of document protected against counterfeit. Said protected document comprises at least one optical variable element. The latter represents a film with optical effect or paint with optical effect. Second area comprises several receiving elements arranged in the form of raster. Invention covers also the method of printing of protected document. Aforesaid optically variable element arranged on protected document is brought, during printing, in contact with the second area of deckle sheet in at least separate areas.
EFFECT: preventing damage of optically variable element, prevention of its structure and glossy properties.
5 cl, 2 dwg
FIELD: printing industry.
SUBSTANCE: frame of print blanket includes substrate, compressible layer and upper textile bundle. Substrate of textile bundle comprises at least one textile layer. Each layer has multiple fibres or threads of warp and woof. Compressible layer includes moisture-hardened thermosetting polymer in the form of polyurethane, urea resin or their mixture. Compressible layer contains multiple evenly distributed closed cells and has uniform characteristics of compression. Compressible layer is applied over substrate. Upper textile bundle comprises at least one textile layer. Each layer has multiple fibres or threads of warp and woof. Textile bundle is applied over compressible layer. Method has also been proposed for manufacturing of compressible frame of print blanket.
EFFECT: invention makes it possible to reduce time for preparation and hardening of print blanket.
13 cl, 1 dwg, 8 tbl, 4 ex
FIELD: printing industry.
SUBSTANCE: invention relates to production of printing production and concerns device for paintless relief stamping. Contains punch with relief work surface and counterpunch with flat work surface, made from porous polyurethane, placed on base from solid polyurethane and covered from bottom and from above with layers with low friction coefficient.
EFFECT: invention allows to increase endurance of device and its efficiency.
FIELD: printing industry.
SUBSTANCE: invention relates to technology of manufacturing printing forms for offset printing. Method of manufacturing printing forms for offset printing is realised by changing properties wettability of areas of work surface of printing forms, transformation of properties being realised due to change of chemical composition of work surface influencing on chosen areas by flux of accelerated particles. As substance of work layer applied is two- or poly- atomic inorganic material based on carbon with addition of aluminium atoms 0.01-20-at.% with thickness 1-1000 nm, which is covered on bottom layer with applied on it layer of aluminium or alloys on its base or on bottom layer from aluminium or based on it alloys.
EFFECT: invention allows to simplify and accelerate manufacturing process, increase of resolving capacity and endurance of providing multiple application of forms.
6 cl, 4 dwg, 1 tbl, 5 ex
FIELD: technological processes.
SUBSTANCE: invention is related to galvanoplastics. Matrix for galvanoplastics of printing screens includes matrix plate, on which metal is deposited for moulding of printing screen. Matrix plate includes the main surface of deposition, on which metal deposited to create the main body of printing screen, at least one pair of edge segments at the opposite borders of the main deposition surface, which include edge segments of deposition, which come out from plane produced by the main deposition surface, on which metal is deposited to create fastening elements of printing screen, and angular sections in appropriate angles of deposition surface. Matrix also includes non-conducting elements in the form of edge elements, which are located at edge sections so that they create length of these edge sections, and non-conducting elements in the form of angular elements, which are located near angle sections so that they protect them and create length of the main deposition surface near these angular sections.
EFFECT: expansion of assortment of produced items.
67 cl, 37 dwg
SUBSTANCE: invention is referred to offset printing industry. The printing deckle includes makeup bush layer (22) with at least one axially convex surface and another layer (26) being laid on top of the makeup bush layer. In addition, the outer layer surface for printing has bulging axial profile when deckle is on offset cylinder and pressure is missing. The offset printing machine contains cylinder for imaging, offset cylinder and printing deckle. In addition, the printing deckle is above the offset cylinder.
EFFECT: compensation of low pressure and prevention of inwardly directed folding.
19 cl, 13 dwg
FIELD: printing industry.
SUBSTANCE: method of manufacturing offset plates by changing the wetting properties of parts of the working surface of the plates, transformation of the properties is carried out by changing the chemical composition of the working surfaces, made from silicon nitride, aluminium nitride and silicon carbide by acting on the selected parts with a stream of accelerated particles.
EFFECT: possibility to simplify and accelerate the process of manufacture, increase resolution and durability of the plates.
7 cl, 1 dwg
FIELD: printing industry, chemistry.
SUBSTANCE: foil for hot stamping includes polyethylene terephthalate film of hot stamping and coating on the basis of thermoplastic bounding agent and pigment. Co-polymer of vinyl chloride with vinyl acetate in 86:14 ratio and molecular weight 27000 is used as bounding agent under the following proportions of components, wt %: Co-polymer of vinyl chloride with vinyl acetate 5-55; pigment is the rest of content.
EFFECT: improved quality of paint layer transfer from film to convex surface of vehicle registration sign.
SUBSTANCE: gasket for offset cylinder of printing machines contains at least one inelastic polyester-based layer and at least one polyurethane elastomeric layer. The said layers are connected inseparably together. The polyurethane elastomeric component has certain chemical/physical characteristics.
EFFECT: ecological compatibility; antipyrine properties; resistance to solvents and mechanical stress; good machinability by mechanical means; durability; significant degree of universality use; good modifiability of the cylinder and elastic flexibility; improved constructional configuration of the printing contact zone; significant degree of uniformity of the image elements spreading on the raster and improved printing stability.
5 cl, 3 dwg
FIELD: metallographic printing.
SUBSTANCE: form is meant for producing printed image or imprint and has at lest one engraved portion on surface with one or more structural elements. Edge portion of structural elements is engraved for greater depth compared to depth, at which their inner portion is engraved, edge portion and inner portions are directly adjacent, directly merge into one another and inner portion is made in form of area, positioned below surface of printed form.
EFFECT: higher efficiency, lower costs.
4 cl, 4 dwg
FIELD: technology for producing thermo-sensitive material for stencil printing forms, engineering of device for producing said material, engineering of stencil printing machines.
SUBSTANCE: material for printing forms is made only from film of thermo-plastic resin by usage of polyether film in such a way, that aperture, through which paint may permeate, can be thermally perforated without increasing power of thermo-printing head. Film is a thermo-sensitive material for stencil printing forms 12, having given thickness, and consists of stretched mylar film or stretched film with low melting point, produced by copolymerization of polyethylene therephthalate and polybutylene therephthalate. A set of smallest raster cells 14 is formed on one side of film by transfer of template. Transfer of template may be performed under working pressure 104·102(m-t)/(m-g) Pascals or higher, when working temperature is t°C, melting point temperature of film is m(°C), and temperature of film vitrifying is g(°C).
EFFECT: decreased power of thermo-printing head, facilitated operations with film.
7 cl, 13 dwg, 1 tbl
FIELD: tympan of vibrating roller, printing apparatuses of printing machine.
SUBSTANCE: tympan on lateral surface of roller, for example roller of printing apparatus has elastic and(or) compressible layer whose contact stress P depends upon value of depression. Said layer is formed in such a way that to provide relationship of contact stress from depression value grown up to 700 N/cm2 at least in separate zones.
EFFECT: possibility for providing by simple means high quality of printed products due to lowered response to vibration and to distortion of printing process.
46 cl, 8 dwg
SUBSTANCE: method comprises exposing photosensitive layer applied on magnesium plate to ultraviolet radiation, etching in nitrogen acid, removing photosensitive layer, washing in fresh water, and drying.
EFFECT: enhanced quality of printing plate.
SUBSTANCE: method comprises exposing photosensitive layer applied on magnesium plate to ultraviolet radiation, etching in nitrogen acid, removing photosensitive layer, washing in fresh water, and drying.
EFFECT: enhanced quality of printing plate.
FIELD: printing form for printing of, in particular, securities and documents, and a printing method.
SUBSTANCE: printing form contains, at least, two functional layers 1 and 2, first one of which is made with through printing elements 3 and 4 for transferring painted image directly onto carrier material 5. Printing form has means 8 for tearing paint layer and redistributing paint in printing elements between layers, which means may be made in form of a mesh or honeycombed structure between layers 1 and 2. In accordance to invention, printing method includes transferring form pattern onto carrier material by means of described printing form, while during printing pressure is created in printing zone, value of which exceeds the yield point value of the carrier material.
EFFECT: possible creation of imprints, analogical to metallographic printing imprints, with more complicated structure and increased degree of protection from forgery; improved quality of imprints due to decreased probability of spraying of paint across space sections of form during printing, and also due to fine-grain structure of imprint surface with high productivity and possible use of broad assortment of painting materials.
4 cl, 12 dwg
FIELD: printing technologies.
SUBSTANCE: steel printing form for deep printing contains on its surface at least one first section with printing structures, meant for producing an imprint by deep printing method, and at least one second section with structures intended for stamping, size of which is less than 100 micrometers. Parts of structures which are closest to the surface of printing form are positioned at a distance from 20 to 100 micrometers below level of printing form surface.
EFFECT: ensured stamping of securities and their simultaneous printing with usage of a single steel printing form for deep printing, and also high protection of securities from forgery is ensured.
9 cl, 15 dwg
FIELD: method for manufacturing "intaglio" deep printing forms.
SUBSTANCE: in accordance to the method, a laser is used to manufacture the form on basis of brass alloy and/or with external layer of brass alloy, with recesses and/or lines, where Vickers rigidity of the brass alloy exceeds 140.
EFFECT: form manufacture stages are shortened.
2 cl, 2 dwg
SUBSTANCE: invention relates to offset cylinder and method of its production, as well as to the gravure machine. The gravure machine comprises a plate cylinder with printing plates with deep-gravure printing elements corresponding to gravure printing structure to be printed on the base, the gravure cylinder interacting with the printing cylinder. The offset cylinder incorporates, at least, one offset blanket whereon multi-colour ink is rolled by means of selector cylinders. A preset colour ink is applied onto every selector cylinder, the ink being fed from the ink device coupled thereto. Note, that every selector cylinder has recesses corresponding to the gravure printing structure and that should be filled with ink of the said preset colour. Note here, that, at least one said offset blanket contains, at least, lipophilic surface layer with recesses or lipophobic surface layer with recesses, including sections with and without recesses corresponding to the gravure printing structure and that should be filled with ink of the said preset colour.
EFFECT: higher accuracy of the ink application, optimised consumption of the ink.
6 cl, 7 dwg
SUBSTANCE: invention pertains to a printing matrix engraved by a laser, used for obtaining a relief image using known methods. Description is given of the printing matrix engraved by a laser, obtained through photocuring a compound on a photosensitive resin base (a), consisting of a polymerised unsaturated group and which has an average molecular mass between 1000 to 20 x 104, an organic compound (b), with a polymerised unsaturated group and average molecular mass less than 1000 and an organic silicon compound (c), with at least, one Si-O bond and not containing a polymerised unsaturated group. Content of the organic silicon compound (c), lies in the range from 0.1 to 10 % of the mass of the compound on the photosensitive resin base. Description is given of obtaining the printing matrix engraved by a laser, through formation of the given compound on a canvas or cylinder with subsequent linking and solidification under exposure to light.
EFFECT: increased resistance of the printing matrix to abrasion and to adhesion on its surface.
19 cl, 2 tbl, 12 ex