JP2011161848A - Printing plate, printing plate cylinder and printer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a printing plate which enables printing work to be performed with a larger coating film thickness than conventionally known, as well as a printing plate cylinder and a printer. <P>SOLUTION: The printing plate includes a cylindrical sleeve with a large number of microholes formed in the cylindrical surface of the sleeve, and a solid layer with a specified pattern created on the outside surface of the cylindrical surface of the sleeve. In addition, the printing plate is formed by a manufacturing method which includes the following stages: a resin coating stage to build up the solid layer using a resin in the way that the resin finds its way deep as specified inside the microhole of the sleeve; a resin polishing stage to expose the outside surface of the cylindrical surface of the sleeve and the opening part of the microhole by polishing the surface of the resin; a plating layer forming stage to form a metallic plating layer over the entire cylindrical surface of the sleeve; a finish polishing stage to polish the surface of the metallic plating layer; a resist layer forming stage; an etching stage; a resist layer removing stage; chromium plating layer forming stage; and a resin removing stage. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a printing plate cylinder for printing various coating materials such as various inks, resins, and conductive pastes on the surface of an object to be printed with a coating film thickness that is thicker than before. The present invention also relates to a printing apparatus using the printing plate cylinder.

  In recent years, a gravure printing method or an intaglio printing method has been used as a manufacturing method for industrial products in various fields such as the building materials field, the packaging field, the publishing field, and the electronics field. Although these industrial products may be further developed by adding higher functions and the like, the gravure printing method or the intaglio printing method is attracting attention as a means for adding its high functionality.

However, in order to be able to add such high functionality to various industrial products, it is necessary to improve the function and performance of the gravure printing method or the intaglio printing method in the following aspects.
[1] Printing of finer lines is possible [2] Arbitrary film thickness of various coating materials (water-based or oil-based ink, resin, conductive paste, etc.) transferred to the surface of the object to be printed (Especially in the range of thicker film thickness than before).

  In order to realize high fine line printing by the gravure printing method or the intaglio printing method, it is necessary to overcome problems such as resolution, sharpness, and unbroken lines of the fine line transferred to the surface of the printing object. That is, in the gravure printing method or the intaglio printing method, the resolution and sharpness of fine lines depend on the size of the holes divided by a predetermined period length by the grid-like partitions on the plate surface and the thickness of the partitions. .

  In order to achieve unbroken lines, it is necessary to reduce the thickness of the grid-like partition on the printing plate, remove it, or increase the depth of holes to increase the amount of ink transfer. In any of the gravure printing method and the intaglio printing method, there are limitations.

  Further, in the gravure printing method and the intaglio printing method, the depth of the hole formed in the plate surface cannot be made too deep, and the viscosity of the ink used cannot be made so high. Therefore, it is very difficult to arbitrarily adjust the thickness of the film of various coating materials to be printed (particularly in the range of a film thickness thicker than the conventional one).

  As conventional techniques capable of printing a thick film, there are a stencil printing method and a rotary screen method (see Patent Literature 1 and Patent Literature 2). These stencil printing methods and rotary screen methods are gravure printing in terms of high-thin line printing. The performance is inferior to the printing method and the intaglio printing method.

JP 2000-25321 A JP 2007-83396 A

  A plate used in the conventional gravure printing method or intaglio printing method usually has a flat or cylindrical surface physically or chemically formed with depressions, depressions, scratches, holes, etc., and generally has a grid-like partition. Is divided into individual holes. That is, the image line portion into which the ink is inserted is formed by a set of recesses, depressions, scratches, and holes having a diameter of about 10 μm to 300 μm and a depth of about 5 μm to 100 μm.

  There are grid-like partitions such as recesses, dents, scratches, holes, etc., and there are limits to the depth of the recesses, dents, scratches, holes, and that coating materials with high viscosity cannot be used. Due to restrictions, the upper limit of the thickness of the film that can be transferred by the conventional gravure printing method or intaglio printing method is about 10 μm. Due to such limitations, when the conventional gravure printing method or intaglio printing method is used in the following fields, there are various problems as described in (1) to (5) below.

  (1) Conductive ink, conductive paste, etc. on a sheet of PET, PEN, acrylic, etc. by using a conventional gravure printing method or intaglio printing method, such as a coiled pattern of an IC card antenna or a wiring pattern of a solar battery backsheet. Is formed by directly printing, the image line portion serving as the conductive wire portion is thin, so that there is a fear that the electrical circuit may not have sufficient conduction capability and may not be formed as an electric circuit.

  (2) Conductive sheets of copper, aluminum, iron, lead, SUS, tin, zinc, titanium, gold, silver, etc. when forming a coil pattern of an IC card antenna or a wiring pattern of a solar battery backsheet Conventional gravure printing method on a single body or a conductive sheet such as copper, aluminum, iron, lead, SUS, tin, zinc, titanium, gold, silver, etc. attached to an insulating sheet such as PET, PEN, acrylic Or, print the prescribed pattern with antiseptic or anti-corrosive ink by intaglio printing method, and use chemicals such as hydrochloric acid, sulfuric acid, ferric chloride, cupric chloride, aqua regia, nitric acid, etc. When an insulating part is formed by removing the exposed portion (non-imaged part) by corrosion, the interval between the imaged part serving as the conductive line part and the non-imaged part serving as the insulating part is several μm to 200 μm. If they are arranged at intervals, preservatives in the image area Corrosion-resistant ink is thin, so there is a high possibility of disconnection and short circuit.

  (3) When the fine expression design of the image area and the non-image area is expressed by the gravure printing method or the intaglio printing method, since the adjustable range of the viscosity of the application material is narrow, the application material is the surface of the printing object. May flow or not adhere.

  (4) In all existing printing methods such as stencil printing, rotary screen printing, gravure printing, and offset printing, a solid coating material is formed at room temperature due to its high melting point, and a predetermined pattern is formed on the surface of the printing object. It is difficult to transcribe.

  (5) When manufacturing wallpaper for building members, etc., after printing a wood grain pattern or other predetermined pattern, laminate a sheet made of resin coating or resin, and several to several tens of μm May be embossed (so-called embossing). At this time, it is desirable that the embossed concavo-convex pattern and the pre-printed pattern are synchronized, but in the existing gravure printing, pattern printing, resin coating (or resin sheet lamination), embossing, Since the process must be divided, the influence of expansion and contraction of the sheet is large, and it is difficult to synchronize the pattern and the embossed uneven pattern.

  The present invention was made in view of the problems of the conventional gravure printing method or intaglio printing method as described above, and it is possible to use a highly viscous aqueous or oily ink, resin, conductive paste, etc. In addition, the present invention relates to a method for realizing a thick image line, pattern, or the like, in which the thickness of a film to be transferred can be arbitrarily increased or decreased.

In order to solve the above problems, in claim 1 of the present invention, a cylindrical outer tube having a large number of fine holes in a cylindrical surface;
A printing plate having a solid layer having a predetermined pattern larger than the fine holes on the outer surface of the cylindrical surface of the outer tube,
The solid layer formed on the outer surface of the cylindrical surface of the outer tube is
A resin application step of applying a resin (water-soluble polyester resin or epoxy-based resin) so as to enter a predetermined depth inside the fine hole of the cylindrical surface of the outer tube,
A resin polishing step of polishing the surface of the resin to expose the outer surface of the cylindrical surface of the outer tube and the openings of the fine holes;
A plating layer forming step of forming a metal plating layer on the entire outer surface of the cylindrical surface of the outer tube;
A final polishing step of performing polishing for reducing irregularities on the surface of the metal plating layer;
Forming a resist layer having the predetermined pattern on the metal plating layer; and
An etching step of etching the metal plating layer to form a solid layer having the predetermined pattern;
A resist layer removing step of removing the resist layer;
The printing plate is formed by a manufacturing method including a resin removing step of removing the resin that has entered the fine holes.

Further, in claim 2 of the present invention, the resist layer forming step includes
A photosensitive resin layer forming step of forming a photosensitive resin layer on the surface of the metal plating layer;
A photosensitive resin layer exposure and development stage in which the predetermined pattern is exposed to the photosensitive resin layer and then developed to form a resist layer having the predetermined pattern;
The printing plate according to claim 1, wherein the printing plate is provided.

Further, in claim 3 of the present invention, the resist layer forming step includes:
A photoreactive resin application step of forming a photoreactive resin layer by applying a photoreactive resin to the surface of the metal plating layer;
A photoreactive resin layer exposure and development stage in which the photoreactive resin layer is drawn and exposed with a laser beam and then developed to form a resist layer having the predetermined pattern;
The printing plate according to claim 1, wherein the printing plate is provided.

  A printing plate cylinder capable of printing a predetermined pattern can be obtained by forming a solid layer having a predetermined pattern by the method according to claims 1 to 3.

Moreover, in Claim 4 of this invention, the printing plate in any one of Claims 1-3,
A cylindrical inner tube disposed inside the outer tube;
An inner tube shaft for supporting and fixing the inner tube;
A liquid material supply means for supplying a liquid material to a space surrounded by the inner wall of the outer tube and the outer wall of the inner tube;
Sealing means disposed between the inner tube shaft and the inner wall of the outer tube, and preventing the liquid from leaking from a space surrounded by the inner wall of the outer tube and the outer wall of the inner tube;
A printing plate cylinder characterized by having

  According to the printing plate cylinder of claim 4 of the present invention, it is possible to use a coating material having a higher viscosity than the conventional gravure printing method or intaglio printing method, and it is possible to print with a thicker film thickness.

  Moreover, in Claim 5 of this invention, the convex part of the state wound helically on the outer peripheral surface of the said inner pipe is formed, The printing plate cylinder of Claim 4 characterized by the above-mentioned. It is a thing.

  According to the printing plate cylinder of claim 5 of the present invention, when the outer tube and the inner tube are relatively rotated by forming the spirally wound convex portion on the outer peripheral surface of the inner tube. The liquid material supplied to the space surrounded by the inner wall of the outer tube and the outer wall of the inner tube can be pushed out more uniformly from the fine holes formed in the side surface of the outer tube.

  Moreover, in Claim 6 of this invention, it has a temperature control means inside the convex part of the state wound helically on the outer peripheral surface of the said inner pipe, The printing plate of Claim 5 characterized by the above-mentioned. It is a torso.

  In the printing plate cylinder according to claim 6 of the present invention, since the temperature adjusting means is provided inside the convex portion wound spirally around the outer peripheral surface of the inner tube, the melting point is high, so that at normal temperature. It is possible to print a solid coating material on a printing object or adjust the viscosity by adjusting the temperature of the coating material to adjust the coating amount.

  According to claim 7 of the present invention, an inner tube attaching / detaching port used for attaching or removing the inner tube to or from the outer tube is provided in the cylindrical side surface or the cylindrical bottom surface of the outer tube. The printing plate cylinder according to claim 4, wherein the printing plate cylinder is provided.

  According to the printing plate cylinder of claim 7 of the present invention, the inner tube attaching / detaching port is provided in the outer tube, so that the inner tube can be easily attached and detached, and the maintenance can be easily performed. There is.

Moreover, in Claim 8 of this invention, the printing plate cylinder in any one of Claims 4-7,
An outer tube drive shaft that supports the outer tube of the printing plate cylinder and rotates around the central axis of the cylindrical surface;
An inner tube shaft support means for supporting and fixing the inner tube shaft of the printing plate cylinder;
A printing object conveying means for conveying the printing object;
Means for bringing a predetermined surface of the printing object being conveyed into contact with a predetermined position of the printing plate cylinder;
Squeegee means provided in contact with the outer peripheral surface of the outer tube of the printing plate cylinder;
And a liquid material collecting means for collecting the liquid material scraped off from the outer peripheral surface of the outer tube by the squeegee means.

  The printing unit according to the eighth aspect of the present invention enables printing using the printing plate cylinder according to any one of the fourth to seventh aspects.

  According to a ninth aspect of the present invention, there is provided a printing apparatus in which a plurality of printing units according to the eighth aspect are connected, and each printing unit operates in synchronization.

  According to the printing apparatus of the ninth aspect of the present invention, it is possible to perform printing with a plurality of types of coating materials using the printing plate cylinder according to any one of the fourth to seventh aspects.

  According to a tenth aspect of the present invention, there is provided a printing apparatus in which the printing plate cylinder according to any one of the fourth to seventh aspects is used as a plate cylinder of a gravure printing apparatus or an intaglio printing apparatus. Is.

  According to the printing apparatus of claim 10 of the present invention, printing can be performed by the printing plate cylinder according to any one of claims 4 to 7 using a mechanism other than the plate cylinder of an existing gravure printing apparatus or intaglio printing apparatus as it is. Therefore, there is an advantage that the cost for capital investment can be suppressed.

  According to the present invention, it is possible to print with a finer line and a thicker film than the conventional gravure printing method or intaglio printing method, and the following effects (1 ') to (5') are obtained.

  (1 ′) The coil pattern of the IC card antenna, the wiring pattern of the solar battery back sheet, and the like are printed directly on the sheet of PET, PEN, acrylic, etc. according to the present invention. Can be manufactured. That is, since the film thickness of the image line portion that becomes the conductive wire portion can be set to a thickness that can sufficiently obtain the conduction ability necessary for the electric circuit, it is possible to manufacture an electric circuit having a predetermined function and performance. Become.

  (2 ′) Conductivity of copper, aluminum, iron, lead, SUS, tin, zinc, titanium, gold, silver, etc. when forming a coiled pattern of an IC card antenna or a wiring pattern of a solar battery backsheet In accordance with the present invention, an anti-corrosion sheet can be applied to a single sheet or a conductive sheet made of copper, aluminum, iron, lead, SUS, tin, zinc, titanium, gold, silver or the like attached to a sheet of PET, PEN, acrylic, etc. Print the specified pattern with an agent or anti-corrosion ink and use chemicals such as hydrochloric acid, sulfuric acid, ferric chloride, cupric chloride, aqua regia, nitric acid, etc., where the metal on the conductive sheet is exposed ( When forming the insulation part by removing the non-image part) by corrosion, the film thickness of the preservative and the corrosion-resistant ink in the image part can be adjusted. The non-image area is arranged at intervals of several μm to 200 μm. Straight lines and curved patterns can be printed, and the possibility of disconnection and short-circuiting can be reduced.

  (3 ′) According to the present invention, when a fine expression design of the image area and the non-image area is expressed, the adjustment range of the viscosity of the application material is wide, so that the application material flows on the surface of the printing object. It is possible to avoid it. In addition, the coating material can be attached to the surface of the printing object with sufficient strength.

  (4 ′) According to the present invention, since the melting point is high, a solid coating material (water-based or oil-based ink, resin, conductive paste) is printed on the surface of the printing object by forming a predetermined pattern at room temperature. It is also possible to do.

  (5 ′) According to the present invention, when a wallpaper for a building member or the like is manufactured, immediately after printing a wood grain pattern or other predetermined pattern, a resin having irregularities formed in a pattern synchronized with the pattern is obtained. It becomes possible to print.

  Furthermore, according to the present invention, the thickness of the image area can be increased to about several tens of micrometers, so that the following (6 ') to (7') are possible.

  (6 ′) By printing a plurality of types of coating materials with a predetermined film thickness and a predetermined pattern with the printing apparatus of the present invention, it is possible to manufacture a multilayer wiring circuit in the electronics field by a multicolor printing technique. become. That is, in the conventional gravure printing apparatus, since the film thickness of the coating material can only be printed on the order of several μm, the conduction ability required for the wiring layer is insufficient. Since printing of about several tens of μm is possible, a wiring layer having sufficient conduction capability can be formed. By printing the wiring layer and the insulating layer alternately with one printing apparatus, the multilayer wiring circuit can be manufactured by a multicolor printing technique.

  (7 ′) According to the printing apparatus of the present invention, for example, a plurality of types of resins and the like are printed and laminated on a PET sheet to form fine parts, and finally the fine parts are separated from the PET sheet. It is possible to construct a simple part manufacturing process.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which shows the structure of the printing cylinder of this invention, and shows the outer pipe | tube with sectional drawing and the inner pipe | tube with the side view. It is a schematic explanatory drawing at the time of using the printing plate cylinder of this invention for a gravure printing system. It is explanatory drawing of the formation process of the printing plate of this invention.

  Hereinafter, embodiments of a printing plate cylinder and a printing apparatus according to the present invention will be described with reference to the drawings.

  FIG. 1 is a view for explaining the structure of a plate cylinder roll 10 of the gravure printing machine of the present invention. FIG. 1 shows a cross-sectional view of the outer tube 100 taken along a plane including its rotational axis, and the inner tube 100 is shown as a side view.

  The outer tube 100 constituting the plate surface portion of the plate cylinder roll 10 has a cylindrical shape made of a metal such as iron, copper, nickel, and chromium, and a plurality of fine holes 401 are formed in the cylindrical surface that becomes the plate surface portion. Yes. In addition, an outer pipe connecting portion 402 for connecting to a drive shaft 110 for supporting and rotating the outer pipe 100 is provided at one end of the outer pipe 100, and one end of the outer pipe 100 is provided. An outer pipe connection port 403 for supporting an outer pipe 100 and passing an inner pipe shaft 107 (described later) connected to the inner pipe 101 (described later) is provided at the end.

  Inside the cylindrical outer tube 100, a cylindrical inner tube 101 is disposed at a position where the center axes of the cylinders coincide with each other, and has a so-called double tube structure. The inner tube 101 is longer than the inner tube 101 and is supported and fixed by an inner tube shaft 107 disposed at a position passing through the central axis of the inner tube 101.

  The inner tube shaft 107, the outer tube connecting portion 402, and the outer tube connecting port 403 are connected to each other through a seal material 102 such as a mechanical seal and a bearing 104, respectively. With this bearing 104, the outer tube 100 can rotate with respect to the inner tube 101.

  The inner tube shaft 107 supports and fixes the inner tube 101 and has a piping portion 404 therein. A liquid supply port 106A is provided on the outer tube connection port 403 side of the inner tube shaft 107, and when a liquid coating material such as a water-based or oil-based ink resin or conductive paste is supplied via the injection tube 106, the tube 404 A liquid coating material can be supplied inside.

  The piping portion 404 has a coating material discharge port 405 for supplying a coating material into a space surrounded by the inner wall of the outer tube 100 and the outer wall of the inner tube 101, on the outer tube connection port 403 side and the outer tube connection unit 402 side. At least one is provided at two locations. The coating material is supplied from the coating material discharge port 405 into a space surrounded by the inner wall of the outer tube 100 and the outer wall of the inner tube 101, fills this space, and a large number of fine materials provided on the plate surface portion of the outer tube 100. The outer hole 401 is pushed out.

  On the outer peripheral surface of the inner tube 101, a convex portion 101A wound in a spiral shape is provided. When the outer tube 100 rotates with respect to the inner tube 101 in a state where the convex portion 101 </ b> A has this spiral structure, the liquid coating material is more uniform from the many fine holes 401 on the side surface of the outer tube 100. Extruded.

  That is, as the outer tube 100 rotates, the liquid coating material moves from the coating material discharge port 405 between the convex portions 101A of the spiral structure, and is surrounded by the inner wall of the outer tube 100 and the outer wall of the inner tube 101. Spread throughout the space. Further, the convex portion 101A having a spiral structure plays a role of scraping the coating material from the minute hole 401 on the side surface of the outer tube 100 like an existing stencil or a squeegee in a rotary screen. Due to this scraping effect, the amount of the coating material can be made uniform even in the region where the hole diameter and density of the fine holes 401 are different.

  Further, if a heating means such as a heating wire or various cooling means is provided inside the convex portion 101A, the liquid coating material supplied in the space surrounded by the inner wall of the outer tube 100 and the outer wall of the inner tube 101 can be used. The temperature can be adjusted. Therefore, by adjusting the temperature, the viscosity of the coating material can be adjusted, and the amount of the coating material pushed out from the minute holes 401 can be adjusted.

  Thus, the space surrounded by the inner wall of the outer tube 100 and the outer wall of the inner tube 101 is subjected to the internal pressure and high temperature of the liquid coating material, and the outer tube 100 and the inner tube 101 rotate relatively. Exercise. Therefore, the sealing material 102 such as a mechanical seal connecting the inner tube shaft 107 and the outer tube connecting portion 402 and the outer tube connecting port 403 is made of fluororesin or ceramic that can withstand internal pressure, high temperature, and friction. It is desirable to choose one. Further, it is desirable that the bearing 104 has an insulating property.

  As a pump for injecting the coating material into the piping section 106 in the inner tube shaft 107 via the injection pipe 106 and the liquid supply port 106A, a screw pump or the like is used as long as the coating material is in a liquid state having a certain viscosity. The metering pump may be selected. Alternatively, when using a solid resin heated and dissolved as a coating material, use a metering pump such as a screw pump that can heat and dissolve the solid resin into a liquid and feed it further. The coating material may be kept at a predetermined temperature by the heating means inside the convex portion 101A.

  As shown in FIG. 2, an excessive amount 223 of the coating material pushed out from the minute hole 401 on the side surface of the outer tube 100 is scraped off by the doctor blade 202, and a predetermined amount of the coating material 224 is removed from the printing object 222. Is transferred to the surface. By setting the printing speed and the pressure of the coating material to appropriate values, the film thickness of the transferred coating material 224 can be adjusted.

  Further, the transferred printing object 222 is passed through a drying furnace (or cooling furnace) 221 set at a predetermined temperature, and the transferred coating material 224 is fixed to the surface of the printing object 222.

  Excess coating material 223 scraped off by the doctor blade 202 is once collected on the ink pan 290 and sent to the pump, and is again injected into the piping unit 404 through the injection piping 106 and the liquid supply port 106A, and circulates. .

  In the printing apparatus according to the present embodiment, the fine holes 401 are formed in the plate surface portion of the outer tube 100 with a substantially uniform size and a substantially uniform density. Alternatively, the pressure distribution applied in the space surrounded by the inner wall of the outer tube 100 and the outer wall of the inner tube 101 is taken into consideration so that the discharge amount when the coating material is discharged from each of the fine holes 401 is substantially uniform. Thus, the size and density of the fine holes 401 may be distributed.

  Therefore, the transferred coating material 224 is uniform without a large pattern. That is, when the coating material used has a low viscosity and the coating material 224 transferred from each of the fine holes 401 can stick to each other, a uniform solid coating state is obtained. Further, when the coating material used has a high viscosity and the coating material 224 transferred from each of the fine holes 401 does not stick to each other, a minute dot pattern is formed uniformly.

  Here, a procedure for forming a printing plate having a predetermined pattern on the cylindrical surface of the outer tube 100 of the plate cylinder 10 will be described with reference to FIG.

  Reference numeral 200 in FIG. 3A denotes a thin plate-like member constituting the cylindrical surface of the outer tube 100. A thin flat member made of a metal or alloy such as iron, copper, nickel, or chromium is subjected to laser or etching treatment. A fine hole 401 is formed and plated with metal such as copper, nickel, or chromium. Alternatively, a flat plate for a rotary screen having a fine network structure and having a surface plated with metal such as copper, nickel, or chromium may be used.

  The thin metal plate 200 having the minute holes 401 is bent into a cylindrical shape and fixedly joined to the bottom surface portion 201 of the outer tube 100 to become a member constituting the cylindrical surface of the outer tube 100 (FIG. 3B). reference). The joint portion 202 between the metal thin plate 200 and the bottom surface portion 201 needs to be joined by welding on the entire surface or screwing via a seal so that the coating material does not leak in a subsequent printing process.

  Next, the resin 203 is applied to the entire surface of the cylindrical metal thin plate 200 (the outer surface of the cylindrical surface of the outer tube 100). At this time, the resin 203 is applied so as to enter a predetermined depth inside the fine hole 401 of the metal thin plate 200 and so that there is no gap between the edge of the fine hole 401 (see FIG. 3C). )

  When a water-soluble polyester resin is used as the resin 203, a saturated copolymerized polyester resin mainly composed of terephthalic acid can be used. An epoxy resin can also be used as the resin 203. These resins were selected for this application because they are stable in shape without being damaged by later-described plating treatment or etching treatment described later.

  After application, the resin 203 is dried until it hardens and has a predetermined strength. This can be done by applying a predetermined time at a predetermined temperature as it is after application, or by applying a pre-coating resin mixed with a curing agent or a crosslinking agent in advance and then a predetermined time at a predetermined temperature. What is necessary is just to process. When an epoxy resin is used as the resin 203, an isocyanate crosslinking agent can be used as the crosslinking agent.

  Next, the surface of the thin metal plate 200 after application of the resin 203 (the outer surface of the cylindrical surface of the outer tube 100) is polished by the polishing means 214 (see FIG. 3D). This polishing is performed so that the surface of the thin metal plate 200 where the fine holes 401 are not present is exposed, and the surface of the resin 203 that has entered the fine holes 401 is at the same height as the exposed thin metal plate 200 surface. Is called. As the polishing means 214, grinding wheel polishing or the like can be used.

After polishing, an electroless copper plating layer 215A having a thickness of several μm is formed on the surface of the metal thin plate 200 (the outer surface of the cylindrical surface of the outer tube 100) (see FIG. 3 [e]). The copper plating layer 215A is formed in layers on both the surface of the resin 203 that has entered the fine holes 401 and the exposed surface of the thin metal plate 200.
An electrolytic copper plating layer 215B having a thickness of about 1 to 30 μm is formed on the electroless copper plating layer 215A (see FIG. 3F).

  The surface of the electrolytic copper plating layer 215B is subjected to finish polishing by grinding stone polishing or lapping paper polishing, and then a photosensitive resin is applied or a dry film resist is applied. Thereafter, the predetermined pattern is exposed and developed to form a resist layer 207 having the predetermined pattern (see FIG. 3 [g]). As the photosensitive resin, those used in the conventional gravure plate making method can be used, and exposure of a predetermined pattern can be performed by direct drawing with a laser beam or exposure with a silver salt film on which a predetermined pattern is formed in advance. Or by a light source. Alternatively, a resist layer 207 having a predetermined pattern may be formed by applying lacquer instead of the photosensitive resin and sublimating the lacquer by direct drawing with a laser beam.

  Next, the surface of the outer tube 100 on which the resist layer 207 and the electrolytic copper plating layer 215B are formed is a cupric chloride bath adjusted to a temperature of 55 ° C. or higher, or 20% by weight of ceric ammonium nitrate, perchloric acid It is immersed in a 6% by weight aqueous solution for a predetermined time while rotating at a constant rate (see FIG. 3 [h]).

  As a result, the portion of the electrolytic copper plating layer 215B that is not covered with the resist layer 207 and the underlying electroless copper plating layer 215A are corroded by the immersion solution. When the corrosion reaches the surface of the metal thin plate 200 and the corrosion rate is reduced, the immersion is finished, and the outer tube 100 is sufficiently washed with water (see FIG. 3 [i]). Thereafter, the resist layer 207 is removed (see FIG. 3 [j]).

  Next, in order to increase the abrasion resistance due to printing, a chromium plating layer 216 having a thickness of several μm is formed on the electrolytic copper plating layer 215B. (See FIG. 3 [k]).

  Next, the resin 203 entering the fine holes 401 of the metal thin plate 200 is eluted by solvent and heating (see FIG. 3 [l]). If the solvent is supplied from both sides of the thin metal plate 200, the elution can be performed efficiently. When elution of the resin 203 is completed, washing is sufficiently performed so that no residue of the resin 203 remains.

  In addition, what is necessary is just to select suitably the kind of solvent used in this process, and its temperature suitable for the resin 203 used. For example, as a solvent when a water-soluble polyester resin is used for the resin layer 203, methyl ethyl ketone (MEK), ethyl acetate, or the like can be used. When an epoxy resin is used for the resin layer 203, methyl ethyl ketone (MEK) or tetrahydrofuran (THF) can be used.

  Through the above process, a predetermined pattern is formed on the cylindrical surface of the outer tube 100 having the fine holes 401 by the solid layer 218 made of the electrolytic copper plating layer 215B, the copper plating layer 216 of the electroless copper plating layer 215A, and the chromium plating layer 217. It can be formed (see FIG. 3 [m]).

  When the outer tube 100 is used as the printing plate cylinder 10, the coating material 224 is extruded from the portion where the fine holes 401 are exposed, but from the portion covered with the solid layer 218, the coating material 224 is extruded. Is not pushed out. Thereby, the coating material 224 is transferred to the surface of the printing object in a state where a predetermined pattern is formed.

  When the coating material 224 forms a predetermined pattern and is transferred to the surface of the printing object, the smoothness of the boundary portion between the portion where the coating material 224 is transferred and the portion where the coating material 224 is not transferred depends on the size of the hole diameter of the fine hole 401. It depends not on the length of the period but on the smoothness of the edge of the solid layer 218. This is because when the edge of the solid layer 218 partially covers a minute hole 401, the coating material 224 is extruded according to the area and shape of the uncovered portion of the opening of the minute hole 401. Because it will be.

  Therefore, if the edge of the solid layer 218 is formed so as to be smoother than the size of the hole diameter and the period of the fine holes 401, the conventional structure which is governed by the size and period of the grid-like partition on the plate surface. It is possible to form a smoother boundary between the transfer / non-transfer areas than the gravure printing method or the intaglio printing method.

  As described above, the outer tube 100 in which a printing plate having a predetermined pattern is formed on the side surface portion can be obtained. The plate cylinder 10 can be obtained by disposing the inner tube 101 and the like inside the outer tube 100 and connecting the inner tube shaft 107 to the outer tube connecting portion 402 and the outer tube connecting port 403.

  In the printing apparatus of the present invention, an existing gravure rotary printing press can be used as the mechanism other than the plate cylinder 10 (and the portion that supports and drives the plate cylinder 10). Furthermore, when a plurality of types of coating materials are applied using the plate cylinder 10 of the present invention in a multicolor gravure rotary printing press having a plurality of units, each coating material can be applied in a predetermined pattern with a predetermined film thickness. Possible printing device.

  An outer tube 100 having a circumference of 940 mm and a surface length of 1400 mm of the plate surface portion was prepared using a cylindrical member having a thickness of 350 μm mainly composed of nickel. In addition, an inner tube 101 having an outer diameter of 640 mm and a surface length of 1400 mm is prepared using a cylindrical member mainly composed of iron S45C, and a convex portion 101A having a spiral structure is provided on the outer periphery thereof. Arranged inside the tube 100. The height of the convex portion 101A having a helical structure from the surface of the inner tube 101 was set to about 20 mm.

  The configuration of other portions of the plate cylinder roll 10 and the method for forming the printing plate are as described in the embodiment of the present invention. The plate cylinder 10 was attached to an existing multicolor gravure rotary printing machine so that it could be used.

Example 1
Using a polyethylene terephthalate (PET) film having a thickness of 50 μm as a base material, a commercially available conductive silver paste (manufactured by Taiyo Ink Manufacturing Co., Ltd. ECM-100) was applied to an antenna pattern for an IC card. It was confirmed that the antenna pattern (after drying) of the obtained conductive silver paste formed a high-definition image line with a width of 30 μm while having a film thickness of 30 μm.

  In Example 1, it was possible to use a high-viscosity conductive silver paste for silk screen that could not be handled by normal gravure printing.

Moreover, as a result of investigating the conductivity of the obtained antenna circuit for an IC card, it was confirmed that the resistance value was as low as 5 × 10 ⁻⁵ Ω · cm.

(Example 2)
In the first color printing unit of the multicolor gravure rotary printing press, the antenna pattern for the IC card is printed with the conductive silver paste in the same manner as in Example 1 and dried through a drying furnace. An insulating ink generally called a solder resist was printed with a solid coating.

  As a result, an insulating ink layer could be laminated on the antenna circuit pattern printed with the conductive silver paste.

As a result of conducting a continuity test of the antenna circuit pattern after drying, it was found that the resistance value was 5 × 10 ⁻⁵ Ω · cm similar to that in Example 1, and that the circuit pattern and the insulating layer could be stacked. Furthermore, it was found that by using a multicolor gravure printing machine having a large number of printing units, it is possible to form a multilayer circuit having 8 to 10 layers.

  According to the present invention, it is possible to sharpen a wiring pattern related to an electronic device, increase the cross-sectional area, and to form a low heat generation circuit having a small electric resistance value.

  According to the present invention, a multilayer circuit formed of a conductive wire layer and an insulating layer related to an electronic device can be easily formed in a short time.

  By this invention, it is possible to express a design that has been difficult to express, such as a delicate pattern of a decorative sheet for building materials, such as an abstract pattern.

According to the present invention, a microchannel or a microflask having a structure in which a groove is dug in a polymer base having a width of several μm and a depth of several μm for research and industrial purposes in the medical field is again covered with a polymer. A large amount of chips can be manufactured at low cost.
By using this, for example, the aqueous chelate solution and the oil phase can be mixed at a micro level, and the chelate compound can be dissolved and separated from the oil / water interface to the oil phase.
In addition, chemical reactions at the micro level are possible with this channel, and DNA analysis with a laser or the like is also possible.

  According to the present invention, by reducing the scale of the system of the present invention in size, it can be applied to ultra fine pattern printing.

  This invention enables multi-color printing with a film thickness, and can be expected to develop into the multi-layer color food printing field as food processing printing.

DESCRIPTION OF SYMBOLS 10 ... Plate cylinder roll 100 ... Outer tube 101 ... Inner tube 101A ... Heating wire 102 ... Sealing material 104 ... Bearing 105 ... Heating wire extraction part 106 ... Application | coating Material injection pipe 107 ... Inner pipe shaft 108 ... Pump 109 capable of sending a fixed amount of liquid resin ... Pump 110 capable of melting by heating solid resin ... Drive shaft for rotating the outer pipe

200 ... Metal thin plate 201 constituting the cylindrical surface of the outer tube ... Bottom surface portion 202 of the outer tube ... Joint 203 of the metal thin plate constituting the side surface of the outer tube and the bottom surface portion of the outer tube ... Resin Layer (water-soluble polyester resin or epoxy resin layer)
207 ... resist layer 214 ... resin layer polishing means 215A ... electroless copper plating layer 215B ... electrolytic copper plating layer 216 ... copper plating layer 217 ... chromium plating layer 218 ... solid layer 220 ... Doctor blade 221 ... Drying or cooling furnace set to an appropriate temperature 222 ... Print object 223 ... Excess coating material 224 ... Coating material 290 ... Ink pan

401: Fine hole 402 provided in cylindrical surface of outer tube 402 ... Outer tube connecting portion 403 ... Outer tube connecting port 404 ... Piping portion 405 ... Coating material discharge port

Claims (10)

A cylindrical outer tube having a number of fine holes on the cylindrical surface;
A printing plate having a solid layer having a predetermined pattern larger than the fine holes on the outer surface of the cylindrical surface of the outer tube,
The solid layer formed on the outer surface of the cylindrical surface of the outer tube is
A resin application step of applying a resin (water-soluble polyester resin or epoxy-based resin) so as to enter a predetermined depth inside the fine hole of the cylindrical surface of the outer tube,
A resin polishing step of polishing the surface of the resin to expose the outer surface of the cylindrical surface of the outer tube and the openings of the fine holes;
A plating layer forming step of forming a metal plating layer on the entire outer surface of the cylindrical surface of the outer tube;
A final polishing step of performing polishing for reducing irregularities on the surface of the metal plating layer;
Forming a resist layer having the predetermined pattern on the metal plating layer; and
An etching step of etching the metal plating layer to form a solid layer having the predetermined pattern;
A resist layer removing step of removing the resist layer;
A printing plate, comprising: a resin removing step of removing the resin that has entered the fine holes. The resist layer forming step includes
A photosensitive resin layer forming step of forming a photosensitive resin layer on the surface of the metal plating layer;
A photosensitive resin layer exposure and development stage in which the predetermined pattern is exposed to the photosensitive resin layer and then developed to form a resist layer having the predetermined pattern;
The printing plate according to claim 1, further comprising: The resist layer forming step includes
A photoreactive resin application step of forming a photoreactive resin layer by applying a photoreactive resin to the surface of the metal plating layer;
A photoreactive resin layer exposure and development stage in which the photoreactive resin layer is drawn and exposed with a laser beam and then developed to form a resist layer having the predetermined pattern;
The printing plate according to claim 1, further comprising: A printing plate according to any one of claims 1 to 3,
A cylindrical inner tube disposed inside the outer tube;
An inner tube shaft for supporting and fixing the inner tube;
A liquid material supply means for supplying a liquid material to a space surrounded by the inner wall of the outer tube and the outer wall of the inner tube;
Sealing means disposed between the inner tube shaft and the inner wall of the outer tube, and preventing the liquid from leaking from a space surrounded by the inner wall of the outer tube and the outer wall of the inner tube;
A printing plate cylinder characterized by comprising:   The printing plate cylinder according to claim 4, wherein a convex portion in a spiral state is formed on the outer peripheral surface of the inner tube.   6. The printing plate cylinder according to claim 5, further comprising a temperature adjusting means inside a convex portion wound spirally around the outer peripheral surface of the inner tube.   5. The inner tube attaching / detaching port used when attaching or removing the inner tube to / from the outer tube is provided on a cylindrical side surface portion or a cylindrical bottom surface portion of the outer tube. The printing plate cylinder as described in -6. A printing plate cylinder according to any one of claims 4 to 7,
An outer tube drive shaft that supports the outer tube of the printing plate cylinder and rotates around the central axis of the cylindrical surface;
An inner tube shaft support means for supporting and fixing the inner tube shaft of the printing plate cylinder;
A printing object conveying means for conveying the printing object;
Means for bringing a predetermined surface of the printing object being conveyed into contact with a predetermined position of the printing plate cylinder;
Squeegee means provided in contact with the outer peripheral surface of the outer tube of the printing plate cylinder;
And a liquid material collecting means for collecting the liquid material scraped off from the outer peripheral surface of the outer tube by the squeegee means.   A printing apparatus comprising: a plurality of printing units according to claim 8 coupled together, wherein each printing unit operates synchronously.   A printing apparatus using the printing plate cylinder according to any one of claims 4 to 7 as a plate cylinder of a gravure printing apparatus or an intaglio printing apparatus.