Printing form and an image obtained with this printing form
(57) Abstract:Relief printing section 2 of the plate-matrix printing, designed for applying to a paint across its surface contains at least one engraving pattern (gravure) 4, intended to fill the same paint that is used for applying for relief printing area (the area for a high print). The print area for a high print preferably has a granular structure formed by pixels that are evenly distributed over the surface. 2 C. and 8 C.p. f-crystals, 3 ill. The invention relates to a printed form having at least one relief (letterpress) printing site intended for applying to a printing ink across its surface, and to an image (picture) obtained by using such a printed form.Known to be used for production of securities, such as banknotes, protective paint, applied at least on one area of banking ticket, known by the name or abbreviation OVI (optically variable ink.), that means optically variable ink, which is a change in color depending on the angle al is a wealth of such paints is their high cost, because of what their use is not very widespread.Has already been proposed to use these colors in combination with the method of gravure printing or the way serigraphic printing. However, both these methods have drawbacks. The application of the method of gravure printing is too expensive due to significant paint loss associated with operation remove the excess water from the printing form. The use of expensive printing technique in combination with expensive paints an obstacle to the application of such remedies.As for serigraphy, this printing method, on the one hand, too slow and, on the other hand, it is not possible to get fine lines or guilloche pattern (a grid of intersecting thin lines), and only evenly painted surface. These plain dyed printed paint areas in the form of any desired geometric shapes: star, rectangle, circle, can be easily tampered with and, therefore, do not provide adequate protection.Known printed form that allows you to perform a protective figure, which is difficult to forge in the manufacturing process of securities .From the same publication is a well-known image, poluchka, known printing form and an image obtained with it, doesn't apply lossless special printing ink, namely, paint, optically changing colour for printing protective figure.The basis of the invention is the creation of the printing form, which is due to the peculiarities of the relief printing property, intended for use on paints, would apply lossless special printing ink, namely, paint, optically changing colour for printing protective figure, as well as the difficult task of creating faked images produced using such a printed form.This task, according to one aspect of the invention, is solved by means of the printing form, which, according to the invention has at least one relief printing site intended for applying to a paint across its surface, and which contains at least one engraved illustration gravure intended to fill it with the same paint that is used for drawing on the relief printing area.Preferably, at least part of the surface of a relief printing is poverhnosti.It is advisable that the grooves of the engraved pattern for gravure printing had more depth than depression granular structure. It is desirable that the hollow granular structure had a depth in the range of 5 to 30 μm, and the grooves engraved picture had a depth ranging from 20 to 80 μm.It is possible that the height of the relief printing plots were in the range from 200 to 1000 microns.It is useful to have engraved on the bottom of the figure for gravure printing was performed linear raster.Permissible to print the form contained at least one relief printing area on the surface of which was made engraved illustration for gravure printing, and the plot made in plain site for typographic printing method.Most preferably, the printed form was made with the possibility of applying paint, which changes colour depending on optical conditions.This task, according to another aspect of the invention, is solved through the images using the printing plate in the form of a pattern corresponding to the contour of the printing area, which, according to the invention, is sobhi and same color the first, corresponding to the figure for gravure printing, made on the printed form, the paint, which made this image, is preferably optically variable color paint.Preferably, outside speaker picture image was formed by pixels.So get printed protective figure, such as banking, ticket, in any configuration, such as square, rectangular or round, consisting of a combination of some specific uniformly colored background of a certain color and the background relief image, made with the same paint, the same color, due to the pattern for gravure printing, engraved printing section of the printing form. This relief pattern has the form received gravure printing, but the paint is applied and it is printed on the printing method, i.e. without removal of excess paint, which is much simpler than the method of gravure printing and, in addition, more economical.Another advantage of the structure of the printing form is that when the use of very expensive special paint, it allows you to use this paint much Bo the and of which Fig. 1 shows schematically, in section, the section of the printing form according to the invention, in which the dimensions of the various reliefs specially enlarged for clarity; Fig. 2 is a partial top view of this printed form and Fig. 3 - printed form a mixed structure with a plot corresponding to the printed form in Fig. 1 and the other section for printing on the printing method.The section of the printing form 1, shown in figures 1 and 2, contains in this example, two relief part 2, surface 3 which is the print. This printing surface 3 is provided engraved with a pattern of grooves 4, as on the printed form for gravure printing. As shown in figure 2, this engraved picture is a lying eight, and he imprinted on a sheet of paper in a printed pattern formed by the relief of the paint.To increase the degree of protection, with the help of this figure can also be provided that the surface of the printing section 3 had a granular structure, consisting of evenly distributed pixels, as shown in the right part of Fig. 1. The bottom 4A of the groove 4 can also have a grid of lines - linear raster.Wysock a depth of 5 30 μm, and the grooves 4 engraved illustration deeper than the spaces between grains of a granular structure, and their depth can reach 20 to 80 μm. Of course, the depth of the grooves should be greater than the depth of the depressions between the grains of a granular structure. When the depth of the depressions between the grains of a granular structure is close to 30 microns, it is obvious that the depth of the grooves 4 is greater than 30 μm.The paint on this printing form is carried out uniformly over the entire surface of traditional colorful roller, which is used when printing on paper or this roller, which is used to paint on the matrix with the method of gravure printing, the matrix roller, so that the entire surface 3 of the printing area with patterns in relief (letterpress) was covered with paint and grooves engraved illustration (gravure) would be well filled with paint, but without subsequent removal of excess paint. The thickness of the ink on the printing parts for high print may vary, preferably in the range from 7 μm to 30 μm.The manufacture of such printed forms can preferably be carried out in the following way: start with engraving pattern of nfiguration protective drawings, which have, for example, a rectangular contour, and removing material on printed form outside of these configurations that have been defined previously, so as to leave only the desired relief areas 2.In the case where the surface protective area grainy, start on the printed form grained grid-raster, and this granular mesh is preferably only in areas, subsequently forming a relief area, and then this grainy grid perform grooves engraved illustration.When at the bottom of the grooves 4 provides for the implementation of a grid of lines, the latter is applied after receiving the engraved pattern.As shown in figure 3, it is also possible the production of printed forms of mixed type with an area of 5, containing the printing area for letterpress (relief) 2, the print surface 3 of which is provided with grooves 4, forming an image engraved (intaglio printing), and area 6 corresponding printed form for ordinary commercial printing multiple relief printing areas with smooth surface. In this case, zone 5 is applied to the ink for printing, changing colour when certain opalene excess paint.Thus, get the printed form, with which you can easily print multiple protective drawings, distributed across the field of printed securities, containing the protective background and main image. Usually limited to printing one zone of protection.Printing form according to the invention can be used not only with a special paint. It is clear that it can be used with any type of paint to create at one time and using the same paint homogeneous background with the speakers on the picture.Such a dimensional relief pattern having the form of figure obtained gravure printing, acting on a homogeneous background the same color as the picture itself, it is very difficult to forge. If in addition to used and optically variable ink, the effect of ducornet reinforced by the fact that under the same angle of view seen embossed on the different facets of orientation, and this paint creates the impression of different colors of these facets depending on their orientation.The print surface is outside of a relief image, as mentioned above, is smooth and homogeneous. Effect of protection, however, is enhanced if it is I raster. The advantage of such a mesh or grainy background is superior the absorption of paint and the increasing complexity of protective figure.In the preferred use of optically variable ink effect documnet across the printing surface is enhanced due to the fact that the granular structure and, consequently, the grid-raster also have reflective facet different orientations, giving the impression of different colors.This granular structure in the form of a linear screen can also be provided at the bottom of the grooves forming the engraved pattern on the printed form, regardless of whether the print surface is grainy or not. 1. Printed form, characterized in that it has at least one relief printing site intended for applying to a paint across its surface, which contains at least one engraved illustration gravure intended to fill it with the same paint that is used for drawing on the relief printing area.2. Form p. 1, characterized in that at least part of the surface of the relief printing section contains granular structuredata fact, the grooves engraved illustration gravure have more depth than depression granular structure.4. Form under item 3, characterized in that the hollow granular structures have a depth of 5 to 30 μm, and the grooves of the engraved figure have a depth of 20 to 80 μm.5. Form according to any one of paragraphs.1 to 4, characterized in that the height of the relief printing surfaces is in the range 200 - 1000 µm.6. Form according to any one of paragraphs.1 to 5, characterized in that on the bottom engraved illustration gravure performed linear raster.7. Form according to any one of paragraphs.1 - 6, characterized in that it comprises at least one relief printing area on the surface of which is made engraved illustration for gravure printing, and the plot made in plain site for typographic printing method.8. Form according to any one of paragraphs.1 to 7, characterized in that it is made with the possibility of applying paint, which changes colour depending on optical conditions.9. The image produced using the printing plate in the form of a pattern corresponding to the contour of the printing area, wherein the image is a picture with ravnomerno the first, the corresponding figure for gravure printing, made on the printed form, the paint, which made this image, is preferably optically variable color.10. Image by p. 9, characterized in that the outside of the speaker of the picture image formed by pixels.
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
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 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
FIELD: printing industry.
SUBSTANCE: invention relates to a method and device for manufacturing moulds for engraved printing, intended for production of security papers, which uses a laser beam (2) for engraving pattern (3, 3.1, 3.2, 3.3) of engraved printing directly on the surface of the moulding material (1), in particular metal, made with the ability of laser engraving. Laser engraving of the moulding material (1) is carried out in layers in several separate stages of engraving. The stages are carried out one after another with the absolute register so that the pattern (3, 3.1, 3.2, 3.3) of engraved printing is gradually engraved on the surface of the moulding material (1) to the required depth of engraving. The surface of the engraved moulding material (1) is cleaned from wastes of a process of laser engraving after each separate stage of engraving, while the laser engraving unit is in the inoperative state.
EFFECT: improvement of quality of engraving.
24 cl, 10 dwg
SUBSTANCE: printing element with deepened parts comprises the print area on the surface of which a large number of deepened parts is formed, and the gap area, on the surface of which the deepened parts are not formed, and the surface is brought into contact with a viscous material such that the viscous material is accumulated in the deepened parts, the excess viscous material is scraped from the surface by the installation of the squeegee projecting horizontally from the surface, and relative movement of the squeegee. In addition the printing element with the deepened parts comprises the substrate element having the print area, on the surface of which a large number of the deepened parts is formed, and the gap area, on the surface of which the deepened parts are not formed, and the DLC coating, formed so as to cover the print area and the gap area. The surface has a plurality of grinding traces, which are formed by grinding the DLC coating and form an angle of inclination which is different from 0° and 90°, relative to an imaginary continuation of the squeegee projecting horizontally from the surface.
EFFECT: printing element with the deepened parts is provided, which solves the problem of fogging, and the method of its manufacturing.
23 cl, 6 dwg