Method for making relief in functional layer of printing form

FIELD: metallography, possible use for making sub-micron (nanometer) relief structures in functional layers of metallographic forms.

SUBSTANCE: in accordance to invention, method is realized by means of multi-pass processing of functional layer of product by cutting. In places of connection of contour parts of projection being formed with different (relatively to base system of coordinates) angular orientation, bisector grooves are cut in direction towards strippable stock. Then side faces of pattern fragment projection are formed. During that on one of technological transitions contouring of aforementioned projection along perimeter is performed (at least one the side of one of faces being formed) by forming a groove along appropriate projection rib with depth lesser than given height of projection. After that stock remaining between projection elements is removed with creation of its given profile without violation of integrity of section of face formed during contouring. Removal of stock remaining after contouring is performed in two stages. During first stage (equidistantly to the groove made during contouring process) a groove is cut with depth equal to given height of projection. During creation of this groove, cutting edge of tool (defining the projection face) is moved towards strippable stock for value limited by technological processing tolerance, to prevent contact of this cutting edge with section of projection face formed during contouring process. During second stage remaining stock is removed by means of successive passes of tool in zone which is limited by the groove formed during first stage.

EFFECT: increased efficiency.

13 cl, 3 dwg

 

The invention relates to a wide range of areas of modern machinery, industrial implementation object which is associated with the use of micro - and/or nanometer technology. The claimed invention can be implemented by industrial widely known cutting tools. In particular, the invention can be used for automated formation (through multi-pass cutting) submicron structures of the topography of the functional layers of metallographic forms (cliche)that are used in the production of various types of securities (requiring a high degree of protection against forgery), as well as in other engineering fields to retrieve the image (topography) of a given configuration and depth with sub-micron resolution structures of this figure (relief).

Since all the main disadvantages of the following (known from the prior art) methods retrieve the image in the functional layer of the product is most explicitly manifested in precision processes of the formation of structures of the above-mentioned pattern with submicron accuracy (resolution) of their geometrical parameters (for example, in manufacturing processes of metallographic forms for letterpress), it is reasonable to disclose the main features of these processes associated with the requirements for restrictions on acrostich parameters generated by these processes specialized structures.

In particular, metallographic (model) forms for letterpress printing, used for receiving printed products (requiring a high degree of protection against forgery), have on the working surface (i.e. in the functional layer) tabs (forming a straight line), mainly trapezoidal profile. Accuracy requirements of the components of these projections and their form are characterized by the following deviations from the nominal parameters:

- deviation from the specified form - 3 microns;

- deviation from the predetermined width is 4 μm;

- deviation from a given height (depth) - 5 microns;

- the deviation of the line elements of the profile (side faces the bottom of the engraving and edges) from the flatness and straightness - 4 ám.

When processing functional layer, for example, metallographic forms as accurately as possible the formation of contours and profiles of the elements of drawing (in particular, protrusions, forming a straight line) it is necessary in the surface area of the functional layer. These plots are generated terrain affects the quality of the seal forms and, accordingly, prints with it. Obviously, by removing material of the functional layer from the space between the projections (straight lines) in the deep zone valid rougher treatment, because the precision of the deep sections of vipulanandan drawing to a lesser extent affects the quality through the printed form of prints.

A method of obtaining a closed contour drawing in the functional layer of the product by means of laser processing (SU 1508468).

According to this known from the prior art method of forming a profile of the fragments of the picture is as follows.

The laser light through a lens Assembly with an off-center rectangular pupils focus on is placed in the focal plane of the above-mentioned lens unit mask stencil, which diafragmirovat peripheral radiation for external and internal contours of the shapes of the openings of the mask or stencil. Next diaphragmatically stream of laser radiation through the projection lens is projected on the surface of the functional layer of the processed product. As a result of this (through the projection lens) provide a refocusing image of the shape of the openings of the mask or stencil on the processed functional layer of the product with the given reduction.

The disadvantages of this method of treatment should include (in addition to the high cost of special equipment required for its implementation), the relatively low resolution of the formed structures of relief. The reason is that when using optical systems, as a rule, there are fundamentally insurmountable Ogre is the limit on the accuracy of the projected on a functional layer formed image pattern, caused by diffraction and abberation effects in optical systems, as well as defocusing of the projected image during processing of the deep levels of the functional layer.

Furthermore, according to this method the accuracy of the formed functional layer of the product picture are superimposed error making circuit of this figure directly in the mask is a stencil, and inherent in this type of processing variation of flatness of faces and evaporated deposition (spray) material finish surface (i.e. a surface that is not subject to any post-processing).

In the prior art there is also known a method of forming the functional layer of the product of convex elements by means of laser engraving (EN 94020443).

This known method of laser engraving (mainly printed forms) is as follows.

The beam of laser radiation modulate time, for example, using an acousto-optic modulator. Then the laser beam is focused through an optical system and directed to the surface of the functional layer of the processed product. Parameters and characteristics of the optical system and the laser radiation is picked such that the diameter of the waist of the focused laser beam corresponded to the time required is the information and communications technology generated in the functional layer of the product picture. The removal of the material between the convex profile of the formed pattern is implemented by multi-pass scanning of the focused laser beam along the surface of the functional layer of the product according to a given program. To ensure the high quality of the specialized structures of the relief formed by drawing it is necessary to ensure in-process alignment of all the components of this process, namely:

scanning a focused laser beam, the modulation of the radiation flux on time, the change speed of the focused laser beam, and the radiation power.

The main disadvantage of this method of laser engraving should be attributed to the technological complexity of the process due to the need for approval in the process of many technological parameters among themselves and relatively low machining accuracy due to the previously mentioned disadvantages of optical systems (caused by the diffraction limit and aberration effects), reflected in the focus and the projection image on the projection surface (in particular, on the appropriate level of functional layer of workpiece).

The closest in technical essence and the achieved result to zavlin the th object is a method of obtaining relief in the functional layer of the printing form, according to which by successive technological transitions form the side faces of at least one profile of the protrusion portion of the figure, one of the technological transitions carry out delineation mentioned ledge around the perimeter, at least from one of the generated faces through education on the lines of the corresponding edges of the lug grooves with a depth of less height ledge. Followed by removing the remaining seam allowance between the elements of the ledge with the formation of its specific profile without compromising the integrity of the shaped contouring of the site faces (EN 2004918).

The disadvantages of this method of obtaining relief in the functional layer of the printing form should be attributed to its technological complexity due to the fact that the full loop requires consistent implementation of several different physical nature of technological transitions, that is impossible at one and the same process equipment in a single set (the base) of the processed product.

In addition, the disadvantages of this method can also be attributed to the relatively low machining accuracy due to the previously mentioned negative properties of optical systems (caused by the diffraction limit and aberr the traditional effects), manifested when focusing and projecting elements of the image on the projection surface (in particular, on the appropriate level of functional layer of workpiece).

The basis for the claimed invention was tasked with developing such a method of obtaining relief in the functional layer of the printing form, which would increase the technological process in General and precision machining due to the possibility of the implementation of all technology transition process through standardised equipment using only the cutting tools in one set (the base) of workpiece on the base surface of this equipment.

The problem is solved by that in a method of obtaining relief in the functional layer of the printing form according to which by successive technological transitions form the side faces of at least one of the profile projection of a fragment of a relief, one of the technological transitions carry out delineation mentioned ledge around the perimeter, at least from one of the generated faces through education on the lines of the corresponding edges of the lug grooves with a depth of less height of the ledge, followed by removing the remaining is riuska between elements of the ledge with the formation of its specific profile without compromising the integrity formed in the process of contouring area faces, according to the invention, the process of forming the side faces of the protrusion is implemented by multi-pass processing of the functional layer of the product by cutting, before outlining in places mates, at least part of the contour plots of the ledge with different relative to the base coordinate system, the angular orientation of the cut directed from the region adjacent to the contour lines in the area to be deleted allowance, bisectorial grooves; removing remaining after contouring seam allowance carried out in two stages: the first stage equidistant formed in the process of contouring the groove cut groove with a depth equal to the given height of the ledge, and in the process of formation of this latter groove cutting edge forming the edge ledge, move to the side of the deleted allowance by an amount limited technological access for processing and providing the exception of contact between this cutting edge with a plot of the faces of the protrusion formed in the process of contouring; in the second stage remove the remaining allowance by successive passes of the tool in the area, which is limited formed at the first stage groove, thus provide the possibility of avoiding contact of the cutting elements of the tool formed on the aforementioned first stage groupprofile ledge.

Bisectorial grooves cut into long not less than the maximum width of profile grooves formed in the delineation and/or mentioned on the first stage of removal allowance remaining after acanthuridae.

Delineation hanging from one of its faces carried out in a single pass of the tool.

In the process of contouring and phase remaining after removal of contouring seam allowance to point of commencement and completion of each pass of the tool combined with one of bisecting grooves.

When combined in the process of the cutting tool with bisectorial grooves taking tool, rotate to the desired angle and return to the initial depth of cut, and then continue the implementation of the technological transition.

In the second stage remove residual after contouring seam allowance moving the cutting tool in each iteration carried out on a straight-line trajectory between the opposed spaced sections formed in the first stage of the notch.

When the above delineation and at the first stage, remove remaining after contouring seam allowance use the tool with the angle of its cutting edge, forming the corresponding face of the ledge, close or equal to the angle of this edge.

During the eye is taiwania as a cutting tool using the cutter.

In the first stage, remove remaining after contouring allowance as a cutting tool using the cutter.

Remove remaining after contouring seam allowance shall be implemented by the cutter, the geometric size of the transverse cutting edge which exceeds the size of the cutter, which is used in the delineation.

The forming faces of the projections, after completion of the above delineation, shall be implemented by the cutter.

Bisectorial grooves perform with a depth of not less than the maximum depth of the groove cut in the process of contouring around the perimeter of the formed ledge.

Delineation of the protrusions and the first removal phase remaining after contouring seam allowance carried out according to the scheme of cutting, as shown in figure 3 graphic materials.

The invention is illustrated graphics.

Figure 1 - profile of the fragment formed on the functional surface of the image with the identification of the main elements of this profile.

Figure 2 - contour of the formed pattern (straight line) with the symbol of the trajectories of the cutting tool at the appropriate transitions when forming the inner edge of the ledge and the removal of the allowance in the area bounded by this line.

Figure 3 is a section along the line a-a in figure 2 with the conventional illustration of one of the possibilities is x processing circuit, used for contouring and at the first stage, remove remaining after contouring seam allowance.

The method of obtaining relief in the functional layer of the printing form is as follows.

First, it is useful to note that according to the present invention, the term "product"generally refers to a model form that contains a complete engraving from a set of grooves forming contour lines) and edges (forming a straight line), obtained by the methods of computer graphics and providing the required quality of the prints.

Before the implementation of the patented process generated in the functional layer 1 product 2 total engraving divided into separate processing objects - figures 3, represents a meaningful part of the engraving, which is not bound, for example, General protrusions 4 (forming in terms of straight line 5) other finished parts of the common engravings.

Next is the immediate processing in accordance with the patented method, which consists in forming a functional layer 1 product 2 of the above-mentioned figures 3 through multi-pass processing of the functional layer 1 product 2 by cutting.

Originally interfaces at least part of the contour plots of the protrusion 4 (or, what is the same,plots directing line 5) with different relative to the base coordinate system, the angular orientation of the cut aimed directly from contour lines (or, mainly from the region adjacent to the contour line) in the area to be deleted allowance bisectorial grooves (i.e. grooves, approximately equidistant from the above-mentioned paired plots contour of the ledge 4). Depth above bisecting grooves, as a rule, is not less than the maximum depth of the grooves cut (in the subsequent processing cycle) in the process of contouring around the perimeter of the formed protrusion 4. Trajectory 6 move the axis of the cutting tool during the formation of bisecting grooves tentatively identified on figure 3 graphic materials in phantom lines. The presence of these bisecting grooves can significantly reduce the load on the cutting tool at subsequent processing stages during the passage of the tool mentioned above interfaces plots contour of the protrusion 4 due to the exclusion of contact of the rear surface of the tool with the material of workpiece 2 during rotation of the tool at a given angle. And it (i.e. the reduction of the cutting forces when passing most disadvantaged areas), in turn, provides increased tool life and improving the quality and precision machining in General.

Then by successive technological transitions form the side faces 7 and 8, at least one profilevalue 4 fragment of figure 3. One of the technological transitions carry out delineation mentioned protrusion 4 on the perimeter, at least from one of the generated faces 7, through education on the lines of the corresponding edge 9 of the projection 4 of the groove depth, the smaller height of the protrusion 4. Trajectory 10 move the axis of the cutting tool in the process of contouring tentatively identified on figure 2 graphic materials dashed line. After contouring carry out the removal of the remaining seam allowance between the elements of the projection 4 with the formation of its specific profile without compromising the integrity formed in the process of contouring portion 11, for example, a face 7.

Remove remaining after contouring seam allowance carried out in two stages. At the first stage equidistant formed in the process of contouring the groove cut groove with a depth equal to the given height of the protrusion 4, and in the process of formation of this latter groove cutting edge, forming, for example, the face 7 of the protrusion 4, shift towards disposable allowance by an amount limited technological access for processing and providing the exception of contact between this cutting edge with the portion 11 faces 7 of the protrusion 4 formed in the process of contouring. The exception of the above-mentioned contact cutting the edge of the tool with section 11 allows you to save received on this section 11 in the process of contouring accuracy and quality of processing. It should also be noted that, as previously mentioned, the quality of the imprint with model forms mainly depends on the quality and accuracy of forming the contours of the profile elements of the pattern in the surface area of the formed structures. The trajectory 12 of the moving axis of the cutting tool at the above first step of removing remaining after contouring seam allowance conventionally shown in figure 2 graphic materials in phantom lines. This stage of removal allowance, usually performed by several successive passes of the tool, for example, in accordance with the scheme of cutting shown in figure 3 graphic materials. This figure 3 the passage 13 of the tool corresponds to the operation contouring, and the passages 14, 15, 16 and 17 (in this sequence) correspond to the technological cycle is considered the first stage of the removal allowance remaining after contouring.

In the second step removes the remaining allowance by successive passes of the tool in the area, which is limited formed at the first stage groove, thus provide the possibility of avoiding contact of the cutting elements of the tool formed on the aforementioned first stage face 7 of the profile of the protrusion 4. Trajectory 18 of the moving axis of the cutting tool for consideration by the Rennes above the second stage remove residual after contouring seam allowance conventionally shown in figure 2 graphic materials solid lines. This stage of removal allowance, usually performed by several successive passes of the tool, for example, on a straight-line trajectory by analogy with the scheme of cutting shown in figure 3 graphic materials, and corresponding to the following sequence of passes: 14-15-16-17 (i.e. via layer-by-layer sequential removal allowance).

It is also useful in more detail to clarify the following special cases of industrial implementation of the patented method.

Bisectorial grooves, it is advisable to cut long not less than the maximum width of profile grooves formed in the delineation and/or mentioned on the first stage of removal allowance remaining after contouring (as well as with the previously specified depth). This allows you to provide a minimum load on the cutting tool (cutter) in the most stressed parts of the cut path, that is, in places 19 of rotation of the tool, which in figure 2 is conventionally denoted by the circles of small diameter.

Delineation of the protrusion 4, at least one of its faces 7, 8 it is reasonable to implement in a single pass of the tool, because it removes the need for re-positioning tool that simplifies the processing technology while improving the quality and accuracy of the processing portion 11 faces 7, 8 in the stupa 4.

In the process of contouring and phase remaining after removal of contouring seam allowance optimal point of commencement and completion of each pass of the tool to combine with one of bisecting grooves, resulting in a decrease of the load on the tool during its cutting into the material of the workpiece, therefore, increases its resistance and, as a consequence, the accuracy of processing.

When combining, in the process, the cutting tool with bisectorial grooves is permissible to raise the tool, rotating to the desired angle and return to the initial depth of cut, and then continue the implementation of the technological transition that reduces asymmetric load on the tool in the most stressed areas of the cutting.

In the second stage remove residual after contouring seam allowance moving the cutting tool in each iteration can be performed on a straight-line trajectory between the opposed spaced sections formed in the first stage of the grooves, which greatly simplifies the organization of the technological process at this stage of processing.

When the above delineation and at the first stage, remove remaining after contouring seam allowance use the tool with the angle of its cutting edge, f is maruosa corresponding face of the protrusion, close or equal to the angle of this edge, which improves the accuracy of processing while increasing productivity, as it allows to carry out in a single pass removal tool allowance for the depth, limited solely by the strength and durability of the tool.

In the process of contouring as a cutting tool to optimally use the cutter.

In the first stage, remove remaining after okonjoiweala allowance as the cutting tool is also advisable to use the cutter.

Remove remaining after contouring seam allowance shall be implemented by the cutter, the geometric size of the transverse cutting edge which exceeds the size of the cutter, which is used in the delineation, which improves performance on the second technological transition process without reducing the precision of the parameters of the formed structures of the product 2.

The forming faces of the projections after the above contouring valid exercise by the cutter.

In the General case, the set of cutting tools for a specific object processing is selected based on the analysis found in this object different configuration of the contour of the grooves and notches between the straight lines 5. For contouring protrusions of any shape appropriate to use the integrated tools with the angle at the vertex of 60 degrees and a width transverse cutting edge 10...30 μm. To remove remaining after contouring seam allowance it is advisable to use cutters with a width transverse cutting edge equal to the width of the bottom formed groove, but not more than 80 μm. If the width of the bottom of the groove more than 2 mm removal allowance can be performed by cutters mounted in a high-speed spindle.

An example of a specific implementation of the patented method of obtaining a pattern in the functional layer of the product.

Practical implementation of the patented method was implemented on the experimental setup (mounted in termokonstantnye the location on the basis of the known from the prior art standardized equipment and components) on set of operations reflected in items 1-12 claims, for example, forming a closed profile of the protrusion 4 (ribs 9 which limit the direct path line 5), the configuration of which is shown in figure 1 and 2 graphic materials with the following technologically predetermined geometrical parameters:

- the width of the protrusion in the upper section (i.e. the width of the straight line) - 50 µm;

- the height of the protrusion (i.e., the depth of excavation, limited one of the side faces of the protrusion) is 50 µm;

- the length of the contour of the protrusion along the axis of the straight line 11 mm;

- deviation from the specified form - 3 microns;

- deviation from the predetermined width in the upper section - 4 µm;

the deviation from the set you what the notes - 5 microns;

- the deviation of the line elements of the profile faces, the bottom of the indentations, ribs) from the flatness and straightness - 4 ám.

As the cutting tool were used universal cutters with the angle at the vertex of 60 degrees and a width transverse cutting edges: 0,01 mm for forming bisecting grooves and contouring; 0.04 mm for sampling (removal) remaining after contouring seam allowance. Workpiece material products - heat-treated aluminum alloy D16 alloy. Maximum cutting depth coordinate Z was 15 microns in a single pass of the tool, the cutting speed of 300 mm/min (for a cutter with a transverse cutting edge, equal to 0.01 mm and 400 mm/min (for a cutter with a transverse cutting edge, equal to 0.04 mm).

Measurement of geometrical parameters generated in the functional layer of the sample structures of the relief (in particular, protrusions, forming a straight line) showed that actually obtained in the process in accordance with patent-pending technology deviations do not exceed technologically regulated field of tolerance for the manufacture of printing forms for letterpress printing, used in the manufacture of banknotes and other securities, requiring submicron resolution fragments of the picture print. Namely, the respective ranges of deviations were in SL is blowing within:

- deviation from the specified form - ±1 μm;

- deviation from the predetermined width in the upper section of the ledge - ±1 μm;

deviations from the specified height - ±1.5 mm;

- the deviation of the line elements of the profile faces, the bottom of the indentations, ribs) from the flatness and straightness - ±1 micron.

Thus, patent-pending way to obtain relief in the functional layer of the printing form by means of multi-pass cutting of the specialized structures of the formed relief can be industrially implemented in various technical fields, for example during the formation of mechanically relief in the functional layers of metallographic forms (cliche) for high printing with sub-micron resolution of the formed structures (printed and gap elements), used mainly in the production of banknotes and other securities (requiring a high degree of protection against forgery), as well as in other fields of technology where it is needed to obtain the functional layer of the product prints a given depth with sub-micron resolution of its structures.

1. The method of obtaining relief in the functional layer of the printing form according to which by successive technological transitions form the side faces of at least one of the profile projection of a fragment of a relief, one of the technological transitions OS is p delineation mentioned ledge around the perimeter, at least, from one of the generated faces through education on the lines of the corresponding edges of the lug grooves with a depth of less height of the ledge, followed by removing the remaining seam allowance between the elements of the ledge with the formation of its specific profile without compromising the integrity of the shaped contouring of the site the verge, wherein the process of forming the side faces of the protrusion is implemented by multi-pass processing of the functional layer of the printing form by cutting, before outlining in places mates, at least part of the contour plots of the ledge with different relative to the base coordinate system, the angular orientation of the cut directed from the region adjacent to the contour line in the area of the deleted allowance bisectorial grooves, removing remaining after contouring seam allowance carried out in two stages: the first stage equidistant formed in the process of contouring the groove cut groove with a depth equal to the given height of the ledge, and in the process of formation of this last, groove cutting edge forming the edge of the ledge, move to the side of the deleted allowance by an amount limited technological access for processing and providing the exception of contact this is the first cutting edge with a plot of the brink of the ledge, formed in the process of contouring, second stage remove the remaining allowance by successive passes of the tool in the area, which is limited formed at the first stage groove, thus provide the possibility of avoiding contact of the cutting elements of the tool formed on the aforementioned first stage face profile of the ledge.

2. The method according to claim 1, characterized in that bisectorial grooves are cut with a length not less than the maximum width of profile grooves formed in the delineation and/or mentioned on the first stage of removal allowance remaining after contouring.

3. The method according to claim 1, characterized in that the delineation of the protrusion from one of its faces carried out in a single pass of the tool.

4. The method according to claim 1, characterized in that in the process of contouring and phase remaining after removal of contouring seam allowance to point of commencement and completion of each pass of the tool combined with one of bisecting grooves.

5. The method according to claim 1, characterized in that when combined in the process of the cutting tool with bisectorial grooves taking tool, rotate to the desired angle and return to the initial depth of cut, and then continue the implementation of the technological transition.

6. JV the property according to claim 1, characterized in that in the second stage remove residual after contouring seam allowance moving the cutting tool in each iteration carried out on a straight-line trajectory between the opposed spaced sections formed in the first stage of the notch.

7. The method according to claim 1, characterized in that when the above delineation and at the first stage, remove remaining after contouring seam allowance use the tool with the angle of its cutting edge, forming the corresponding face of the ledge, close or equal to the angle of this edge.

8. The method according to claim 1, characterized in that in the process of contouring as a cutting tool using the cutter.

9. The method according to claim 1, characterized in that in the first stage, remove remaining after contouring allowance as a cutting tool using the cutter.

10. The method according to claim 8 or 9, characterized in that the destruction left after contouring seam allowance shall be implemented by the cutter, the geometric size of the transverse cutting edge which exceeds the size of the cutter, which is used in the delineation.

11. The method according to claim 1, characterized in that the forming faces of the projections after the above mapping is realized by means of the cutter.

12. The method according to claim 1, characterized in that bisectorial ka is where it is refuelled perform with a depth of not less than the maximum depth of the groove, cut in the process of contouring around the perimeter of the formed ledge.



 

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The invention relates to a method for applying the print to the outer plate, which take the plate plate 01 Krasnopolyanskaya layer 03 and lying on it Krasnoufimsk layer 04

The invention relates to a method of changing the wettability properties of the printing form with the surface of the semiconductor, as well as printed form with the surface of the semiconductor, which has different characteristics, wettability, and its application in the process of offset printing

FIELD: data carriers.

SUBSTANCE: data carrier 14 with forgery-protecting imprint 1 made by metallographic printing method consists of several contrasting structural elements 2,3,4,5,7,22, positioned with precise alignment to each other, while one portion of these structural elements 3,4,5,7 is made relief-type and can be sensed by touch, and other portion of structural element 2, 22 is made flat and undetectable by touch.

EFFECT: exceptionally high level of protection.

4 cl, 9 dwg

FIELD: metal working in number program controlled machines.

SUBSTANCE: cutter includes active portion and stem. Cutter apex is arranged in its axis belonging to front surface. Main and trailing back faces are equally inclined relative to cutter axis and they cross front surface by positive back angles relative to main and trailing cutting edges having their own angles in plan view. Trailing back surfaces form second pair of surfaces inclined by the same angles relative to cutter axis. Inclination angles of main and trailing back surfaces relative to cutter axis is determined by value of back angle of main cutting edge. Trailing back surfaces are inclined by less angles relative to cutter axis. Active portion of cutter has at least with two chamfers equally inclined relative to cutter axis.

EFFECT: enhanced strength of cutter, improved stability of manufacturing process.

5 cl, 19 dwg

FIELD: multicolor printing methods.

SUBSTANCE: method involves transferring positive image formed on film onto carbon-treated microporous rubber; dividing portion of microporous rubber of, for example, round shape, which had not been subjected to pulsed light treatment, into n number of sectors of different shapes; creating boundaries between sectors by exposing microporous rubber to thermal action of maximal depth. With 1.5 mm thick rubber, depth of boundary shall be at least 1.1 mm and shall not exceed 1.4 mm, said depth preferably approximating to thickness of rubber. Upon subjecting rubber to thermal action, pores are caked to define boundary, which protects sectors from mixing of inks of different colors. Resultant sectors are further charged with inks of different colors.

EFFECT: provision for creating of high-quality multicolor print.

4 dwg

FIELD: printing industry.

SUBSTANCE: proposed storage medium with half-tone image in engraving style produced by method of intaglio printing, i.e. presented by irregular linear structures, consists of repeated printable structural elements. Fine structure present within the limits of structural elements in from of spaces are partially applied to structural elements.

EFFECT: provision of complex design, high protection from counterfeit.

36 cl, 16 dwg

FIELD: polygraphy, in particular, template printing forms.

SUBSTANCE: template printing form has meshed base and photo-resistive parts, limiting printing elements. Meshed base consists of cells in form of scalene n-angled shapes of even areas, where n≥3, positioned irregularly. Lengths of links, forming sides of n-angled shapes, are selected from condition of evenness of areas of these.

EFFECT: increased printing quality due to prevented appearance of moire pattern, appearing because of interference between regular polygraphic dot matrix and meshed base.

2 dwg

FIELD: metallography, possible use for forming submicron relief structures in functional layers of metallographic forms.

SUBSTANCE: in accordance to method, by means of at least one technological transition sides 4,5,6,7 of profiled linear groove 8 of pattern fragment 3 are formed by means of shaping of functional layer of product 2. After full profile of groove 8 is formed, in internal corners of mating sections, at least parts of sections of curvilinear contour of groove 8 with different, relatively to base coordinates system, angular orientation, cold-hardening is removed which appeared during plastic deformation of material of functional layer during forming of profiled contour of groove 8. For that purpose in bisector area of aforementioned mating sections cuts 10 are made, directed towards area of groove 8 adjacent to bottom with exit of cutting part of tool onto upper plane of functional layer of product 2. Cuts 10 are made by shaping with length not exceeding size of side 4 or 5 of profile of groove 8 in direction of cut 10 in place where aforementioned cut 10 is made. Cut 10 is, as a rule, made during one pass of tool.

EFFECT: increased efficiency of process, increased precision and quality of processing due to elimination of cold-work strengthening.

3 cl, 4 dwg

FIELD: processes and equipment for making printing forms for screen printing, apparatuses for screen printing.

SUBSTANCE: method for making printing forms comprises steps of melting heat sensitive material of printing forms for screen printing having film of thermosetting resin of predetermined thickness by heating thermal head for perforating holes permeable for printing ink; forming large number of shallow recesses in one side of said film. Heaters of thermal head 10 have such size that next inequalities HM > 0.6PM, HS > 0.7 PS are satisfied. Heaters are arranged at pitch PM in side of main scanning direction. Length of heaters along side of main scanning direction is equal to HM. Feed stroke at side along secondary direction of scanning is equal to PS. Length of heaters at side along secondary direction of scanning is equal to HS. Side of film opposite to its side having shallow recesses is heated due to heating thermal head 10 with output 35 mJ/mm2 or less for melting heated zone until its communication with said recesses in order to form holes permeable for printing ink.

EFFECT: possibility for thermally perforating in film individual holes permeable for typographic ink at the same output of thermal head, realization of screen printing process at using material of printing forms for screen printing containing only film of thermoplastic resin.

18 cl, 9 dwg

FIELD: micro- and(or) nano-technology.

SUBSTANCE: method comprises steps of removing allowance in central zone of working during rough pass and then finishing surfaces of lateral faces of shaped fragments of pattern along the whole depth of rough working pass. It is realized at using only one lateral edge of cutter to be rotated around its lengthwise axis in curvilinear and broken portions of its cutting path while providing optimal three-dimension position of front surface of cutter relative to cutting surface. Rough passes are performed by means of cutter while using in first pass simultaneously two lateral cutting edges and then using only one of said cutting edges turned to formed lateral face of shaped fragment of pattern. In order to enhance accuracy and quality of working by providing possibility of removing allowance in zones of pattern with broken cutting path during process of removing allowance remained after rough working at finishing, in zones of internal angles of broken portion of cutting path and in zone of portions with small joining radius cutter is lifted for providing outlet of its working part onto upper plane of functional layer of article. Then cutter is turned by angle normalized by cutting path going-on line and it is again fed-in to allowance portion remained after lifting cutter by initial depth. Cutter is lifted and descended while simultaneously imparting to it main cutting motion into zone of removed allowance. Planing cutter includes stem and working part restricted by flat front surface with lateral cutting edges and profiled back surface with lead angle equal to zero for forming end portion of working part. Cross section of working portion is in the form of axially symmetrical figure. Generatrices of back surface are inclined by the same angles relative to axis of cutter stem. End portion of working part is flat one and it is the form of oval-half whose plane is spatially inclined by acute angle relative to front surface. Rib formed by crossing of end portion and front surface serves functionally as third cutting edge; it is oriented by angle 90° relative to lengthwise axis of cutter.

EFFECT: improved accuracy and quality of planing by such cutter.

7 cl, 20 dwg

FIELD: metallography, possible use for making sub-micron (nanometer) relief structures in functional layers of metallographic forms.

SUBSTANCE: in accordance to invention, method is realized by means of multi-pass processing of functional layer of product by cutting. In places of connection of contour parts of projection being formed with different (relatively to base system of coordinates) angular orientation, bisector grooves are cut in direction towards strippable stock. Then side faces of pattern fragment projection are formed. During that on one of technological transitions contouring of aforementioned projection along perimeter is performed (at least one the side of one of faces being formed) by forming a groove along appropriate projection rib with depth lesser than given height of projection. After that stock remaining between projection elements is removed with creation of its given profile without violation of integrity of section of face formed during contouring. Removal of stock remaining after contouring is performed in two stages. During first stage (equidistantly to the groove made during contouring process) a groove is cut with depth equal to given height of projection. During creation of this groove, cutting edge of tool (defining the projection face) is moved towards strippable stock for value limited by technological processing tolerance, to prevent contact of this cutting edge with section of projection face formed during contouring process. During second stage remaining stock is removed by means of successive passes of tool in zone which is limited by the groove formed during first stage.

EFFECT: increased efficiency.

13 cl, 3 dwg

FIELD: negative printing forms developed in printing machine, which may be exposed by ultraviolet, visible or infrared radiation.

SUBSTANCE: cover-forming composition is described, which includes (i) polymerization-capable compound and (ii) polymer binding agent, containing polyethylene-epoxide segments, where polymer binding agent is selected from group which consists of at least one added copolymer, containing polymer of the main chain and polyethylene-epoxide side chains, block copolymer, containing at least one polyethylene-epoxide block and least one non polyethylene-epoxide block, and combinations of these. Also described is an element, in which image may be formed, including base and polymerization-capable covering composition.

EFFECT: differentiation between image sections exposed and non-exposed by electromagnetic radiation, facilitating development of non-exposed sections in water developing agents, increased resistance to development of exposed sections, ensured coloration capacity of the latter when not heated before development.

5 cl, 3 dwg, 11 ex

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