WO2008053757A1 - Plaque d'impression en creux - Google Patents

Plaque d'impression en creux Download PDF

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Publication number
WO2008053757A1
WO2008053757A1 PCT/JP2007/070705 JP2007070705W WO2008053757A1 WO 2008053757 A1 WO2008053757 A1 WO 2008053757A1 JP 2007070705 W JP2007070705 W JP 2007070705W WO 2008053757 A1 WO2008053757 A1 WO 2008053757A1
Authority
WO
WIPO (PCT)
Prior art keywords
cell
halftone
main cell
density gradation
shadow
Prior art date
Application number
PCT/JP2007/070705
Other languages
English (en)
Japanese (ja)
Inventor
Hideki Ando
Original Assignee
Think Laboratory Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Think Laboratory Co., Ltd. filed Critical Think Laboratory Co., Ltd.
Priority to JP2008542060A priority Critical patent/JP5063611B2/ja
Publication of WO2008053757A1 publication Critical patent/WO2008053757A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N1/00—Printing plates or foils; Materials therefor
    • B41N1/04—Printing plates or foils; Materials therefor metallic
    • B41N1/06—Printing plates or foils; Materials therefor metallic for relief printing or intaglio printing

Definitions

  • the present invention relates to a gravure printing plate used for gravure printing.
  • a general gravure printing plate is produced by the following process.
  • the gravure printing roll is a roll formed with a gravure cell in which density gradation (color shading) is expressed by the size of fine dots (halftone dots).
  • the gravure cells (hereinafter sometimes referred to simply as “cells”) formed on the gravure platemaking roll include AM screen (Amplitude Modulation Screen) gravure cells and FM screen (Frequency Modulation Screen) gravure sensors. Is known. On the AM screen, halftone dots are regularly arranged and the density gradation is expressed by the size of the halftone dots, whereas on the FM screen, the density gradation is expressed by the density of the halftone dots.
  • the gravure plate roll is configured as a plate in which the gradation of the printed matter is 0 to 100%, and the gradation of the gravure plate roll is represented by about 0 to 90%.
  • the highlight portion is the brightest portion of the density gradation in which the cells are formed small
  • the shadow portion is the darkest portion of the density gradation in which the cells are formed large.
  • the middle part is called the halftone part.
  • a conventional gravure cell is shown in FIG. 5 and FIG. 5 and 6, the pitch of the conventional gravure printing plate 100 is determined according to the number of lines / inch. For example, in the case of 175 lines / inch, one pitch is 145 m.
  • a gravure cell 140 is formed at each pitch 120, and ink is put into the gravure cell 140 and excess ink is scraped off and printed by a doctor blade.
  • FIG. 5 is a schematic top view of a gravure cell formed on a conventional gravure printing plate, where (a) is a density gradation 5% state, (b) is a density gradation 10% state, (c ) Is a density gradation 30% state, (d) is a density gradation 45% state, and FIG.
  • FIGS. 5 (a) to (d) and FIGS. 6 (e) to (g) show the state of density gradation 90%.
  • the conventional gravure cell has a square lattice shape as shown in FIGS. 5 (a) to (d) and FIGS. 6 (e) to (g)
  • ink is applied to the gravure cell.
  • the image becomes flat in the printing direction, or the ink in the gravure cell interferes with each other, causing the interference to become conspicuous, resulting in poor appearance of the intermediate colors.
  • the gradation was not smooth.
  • Patent Document 1 JP-A-8-146594
  • the present invention has been made in view of the above problems, and not only can improve the appearance of intermediate colors and smoothness of gradation in AM screens, but also highlight areas in FM screens. It is an object of the present invention to provide a gravure printing plate which can improve the transfer of ink to the ink and can obtain a sufficient density in a shadow portion. Means for solving the problem
  • a strip-shaped highlight main cell having a small area is formed in the highlight portion, and the area of the strip-shaped highlight main cell is increased in the halftone portion as the density gradation increases.
  • a band-shaped halftone main cell is formed by gradually increasing and forming both ends close to each other and additionally forming a dot-like or linear halftone auxiliary cell around the band-shaped highlight main cell,
  • the area of the band halftone main cell is gradually increased to form an annular shadow portion main cell by joining both ends of the band halftone main cell. It is characterized by doing.
  • the annular shadow portion main cell may be an annular cell in which an island is formed in the center, or may not be completely an island or a peninsula.
  • printing unevenness may occur when the density gradation is near 50% to 100%. In this way, in the shadow area, the island or peninsula is formed in the center, improving printing unevenness.
  • the halftone portion auxiliary snoring may be in contact with the annular shadow portion main cell, or may be positioned apart without contacting.
  • the halftone auxiliary cell may be gradually reduced in size as it approaches a shadow portion (density gradation of 50% or more), or the halftone auxiliary cell itself may be extinguished. tomorrow.
  • the halftone portion auxiliary cell may be used as a shadow portion auxiliary cell by increasing its area as the density gradation increases.
  • the strip-shaped highlight portion main cell, the strip-shaped halftone portion main cell and the halftone portion auxiliary cell, and the shadow portion main cell and the shadow portion auxiliary cell force are configured to be formed by a large number of micro-pits. It is also possible.
  • the size of the micro pits is preferably 5 m to 100 m force S, and particularly preferably 20 111 to 50 mm.
  • the highlight portion is a portion where the color density of the printed material is the lightest
  • the shadow portion is the darkest portion
  • the halftone portion indicates an intermediate portion thereof.
  • the no-light part indicates the density gradation of 30% or less
  • the shadow part indicates the part of the density gradation of 50% or more. It refers to 10 to 70% gradation.
  • the depth of the gravure cell of the gravure printing plate of the present invention varies depending on the desired printing and is not particularly limited. For example, a depth of 1 to 150 m is possible.
  • the number of screen lines that can be applied to the gravure printing plate is not particularly limited. For example, a number of lines such as 10 lines / inch to 1500 lines / inch can be applied, and depending on the number of lines. The size of each cell varies.
  • the gravure printing plate of the present invention it is possible not only to improve the appearance of the intermediate color on the AM screen and the smoothness and the smoothness of the dullade, but also to transfer the ink to the highlight portion on the FM screen. It is possible to provide a gravure printing plate that is improved and can obtain a sufficient density in the shadow portion.
  • FIG. 1 is a schematic top view of a gravure cell formed on a gravure printing plate according to one embodiment of the present invention, in which (a) is a state where the density gradation is 5%, (b) Shows the state of density gradation 10%, (c) shows the state of density gradation 30%, and (d) shows the state of density gradation 45%.
  • FIG. 2 is a schematic top view of a gravure cell formed on a gravure printing plate according to an embodiment of the present invention, where (e) is a density gradation 50% state, and (f) is a density scale. 70% tone, and (g) shows 90% density gradation.
  • FIG. 3 is a schematic diagram of the upper surface of a gravure cell formed on a gravure printing plate according to another embodiment of the present invention, where (a) is a state where the density gradation is 5%, and (b) is the density 10% gradation, (c) 30% density gradation, and (d) 45% density gradation.
  • FIG. 4 is a schematic diagram of the upper surface of a gravure cell formed on a gravure printing plate according to another embodiment of the present invention, where (e) is a state with a density gradation of 50%, and (f) is a density 70% gradation, (g) shows the state of density gradation 90%.
  • FIG. 5 is a schematic top view of a gravure cell formed on a conventional gravure printing plate, where (a) is a state where the density gradation is 5%, (b) is a state where the density gradation is 10%, (c ) Shows a state with a density gradation of 30%, and (d) shows a state with a density gradation of 45%.
  • FIG. 6 is a schematic top view of a gravure cell formed on a conventional gravure printing plate, where (e) is a density gradation 50% state, (f) is a density gradation 70% state, (g ) Shows the state of density gradation 90%.
  • 10A, 10B gravure printing plate of the present invention
  • 100 conventional gravure printing plate
  • 140 Gravure cell.
  • FIG. 1 is a schematic top view of a gravure cell formed on a gravure printing plate according to an embodiment of the present invention, where ⁇ is a density gradation of 5%, and (b) is a density The state of gradation ⁇ %, (c) shows the state of density gradation 30%, and (d) shows the state of density gradation 45%.
  • FIG. 2 is a schematic top view of a gravure cell formed on a gravure printing plate according to one embodiment of the present invention, where (e) is a density gradation 50% state and (f) is a density scale. The tone is 70%, and (g) is the density gradation 90%.
  • FIG. 3 is a schematic top view of a gravure cell formed on a gravure printing plate according to another embodiment of the present invention, where (a) is a state where the density gradation is 5%, (b) Shows a state with a density gradation of 10%, (c) shows a state with a density gradation of 30%, and (d) shows a state with a density gradation of 45%.
  • FIG. 4 is a schematic diagram of the upper surface of a gravure cell formed on a gravure printing plate according to another embodiment of the present invention, where (e) is a state where the density gradation is 50%, and (f) is the density. The gray level is 70%, and (g) is the density gray level 90%. [0032] FIG.
  • FIG. 5 is a schematic top view of a gravure cell formed on a conventional gravure printing plate, where (a) is a density gradation 5% state and (b) is a density gradation 10% state. , (C) shows a state with a density gradation of 30%, and (d) shows a state with a density gradation of 45%.
  • FIG. 6 is a schematic top view of a gravure cell formed on a conventional gravure printing plate, where (e) is a state with a density gradation of 50%, (f) is a state with a density gradation of 70%, ( g) shows the state of density gradation 90%.
  • the gravure printing plate of the present invention is prepared by the following steps. First, copper plating is performed using a cylinder roll of aluminum, iron, or CFRP (carbon fiber reinforced resin) as a base material. After the copper plating, the normal plating is performed (the ballad plating can be omitted). After ballading, grind the stone. After grinding the grindstone, the photosensitive material is coated. Then dry. Then, laser exposure is performed by a laser exposure machine to form a gravure cell (a minute recess). By developing, the photosensitive material is removed from the laser-exposed (or unexposed) part. The photosensitive material of the part is removed, the part where the copper plating is exposed is corroded, and the necessary depth of the gravure cell is secured.
  • copper plating is performed using a cylinder roll of aluminum, iron, or CFRP (carbon fiber reinforced resin) as a base material. After the copper plating, the normal plating is performed (the ballad plating can be omitted). After ballading, grind the
  • Hard plate treatment for example, chromium plating, DLC (Diamond Like Carbon) film, nickel alloy film, silicon dioxide film, etc. is performed to increase the durability of the plate. Then, polish the paper and remove the protrusions on the hard coating.
  • the gravure cell of the gravure printing plate formed in this way will be described with reference to Figs.
  • FIG. 1 shows a schematic top view of a gravure cell formed on a gravure printing plate according to one embodiment of the present invention.
  • reference numeral 10A denotes one embodiment of the gravure printing plate of the present invention.
  • Reference numeral 12 indicates a pitch, and the size of the pitch 12 is determined according to the number of lines of the screen to be printed. In the example shown, the case of 175 lines / inch is shown, and the pitch 12 is 145 mm.
  • the gravure printing plate 1 OA of the present invention is a gravure printing plate for printing an image having a density gradation consisting of a no, an illite part, a halftone part and a shadow part.
  • the density gradation less than 10% is the highlight portion, and the density gradation is 10% or more to 50% not yet Full indicates a halftone part and a density gradation of 50% or more is a shadow part.
  • the no-light part and the ill-light part indicate a density gradation of 30% or less, and the shadow part indicates a part of the density gradation of 50% or more. This refers to a density gradation of 10 to 70%.
  • the area of the band-shaped highlight main cell 14 is gradually increased so that both ends of the band-shaped highlight main cell 14 come closer as the density gradation increases.
  • a band-like halftone main cell 18 is formed by additionally forming a dot-like or line-like halftone auxiliary cell 16 around the band-like highlight main cell 14 (FIGS. 1 (b) to 1 (1)).
  • the area of the band-shaped halftone main cell 18 is gradually increased as the density gradation increases, and both ends of the band-shaped halftone main cell 18 are joined.
  • An annular shadow main cell 20 is formed (FIGS. 2 (e) to (g)).
  • the area of the halftone auxiliary cell 16 is increased as the density gradation increases, and becomes the shadow portion auxiliary cell 22 (FIG. 2 (e) to ( g)
  • the annular shadow main cell 20 is an annular cell having an island 24 formed in the center.
  • the shadow part auxiliary cell 22 is configured to be in contact with the annular shadow part main cell 20.
  • the shadow portion auxiliary cell 22 is combined with the annular shadow portion main cell 20 and included in the annular shadow portion main cell 20.
  • the appearance of intermediate colors and the smoothness of gradation in the AM screen can be improved.
  • the transfer of ink to the highlight portion of the FM screen can be improved and a sufficient density in the shadow portion can be obtained.
  • FIGS. 3 and 4 show a gravure formed on a gravure printing plate according to another embodiment of the present invention.
  • the top surface schematic explanatory drawing of an acel is shown.
  • reference numeral 10B denotes another embodiment of the Daravia printing plate of the present invention.
  • Reference numeral 52 indicates a pitch, and the size of the pitch 52 is determined according to the number of lines of the screen to be printed. In the example shown, the case of 175 lines / inch is shown, and the pitch 52 is 145 mm.
  • the gravure printing plate 10B of the present invention is a gravure printing plate for printing an image having a density gradation composed of a no, an illite portion, a halftone portion and a shadow portion.
  • the gravure cell of the gravure printing plate 10B is composed of a large number of minute pits 53.
  • the density gradation of 10% to 50% is the halftone portion
  • the density gradation of 50% or more is the shadow portion.
  • the no-light portion and the illite portion refer to a portion having a density gradation of 30% or less
  • the shadow portion refers to a portion having a density gradation of 50% or more. This refers to a density gradation of 10 to 70%.
  • a band-shaped highlight portion main cell 54 having a small area is formed by the minute pits 53 (FIG. 3 (a), density gradation 5%).
  • the area of the band-like highlight main cell 54 is gradually reduced so that both ends of the band-like highlight main cell 54 come closer as the density gradation increases.
  • the band-shaped halftone main cell 58 is formed by additionally forming a dot-like or line-shaped halftone auxiliary cell 56 with minute pits 53 around the band-shaped highlight main cell 54 (see FIG. Fig. 3 (b) to (d), density gradation 10% to 45%).
  • the area of the band-shaped halftone main cell 58 is gradually increased by the minute pits 53 so that both end portions of the band-shaped halftone main cell 58 are formed.
  • the annular shadow main cell 60 is formed by bonding (Fig. 4 (6) to ⁇ )).
  • the area of the halftone auxiliary cell 56 is increased with the minute pits 53 as the density gradation increases, and the shadow part auxiliary cell 62 is formed.
  • the annular shadow main cell 60 is an annular cell having an island 64 formed in the center as shown in FIGS. 4 (e) to (g).
  • the shadow part auxiliary cell 62 is configured to be in contact with the annular shadow part main cell 60.
  • the shadow portion auxiliary cell 62 is combined with the annular shadow portion main cell 60 and included in the annular shadow portion main cell 60.
  • the cell 62 is formed by a large number of minute pits 53! /.

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  • Manufacture Or Reproduction Of Printing Formes (AREA)
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Abstract

La présente invention se rapporte à une plaque d'impression en creux qui est apte à améliorer l'apparence d'une couleur en demi-teinte et la régularité de la gradation dans un écran AM, et qui est apte également à transférer de l'encre sur la partie mise en lumière dans un écran FM, et permet d'atteindre une densité suffisante au niveau d'une partie ombrée. Une cellule principale d'une partie mise en lumière de la forme d'une bande de petite dimension est formée au niveau de la partie mise en lumière, une surface de la cellule principale de la partie mise en lumière de la forme d'une bande augmente progressivement à mesure que l'échelle des gris augmente dans une partie en demi-teinte de telle sorte que les extrémités opposées de la cellule principale de la partie mise en lumière de la forme d'une bande se rapprochent et qu'une cellule secondaire d'une partie en demi-teinte linéaire ou semblable à un point se forme par ailleurs sur la périphérie de la cellule principale de la partie mise en lumière de la forme d'une bande, de façon à former ainsi une cellule principale de partie en demi-teinte de la forme d'une bande, et à former ainsi une cellule principale de partie annulaire ombrée au niveau de la partie ombrée.
PCT/JP2007/070705 2006-10-31 2007-10-24 Plaque d'impression en creux WO2008053757A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008542060A JP5063611B2 (ja) 2006-10-31 2007-10-24 グラビア印刷版

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006-296152 2006-10-31
JP2006296152 2006-10-31

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WO2008053757A1 true WO2008053757A1 (fr) 2008-05-08

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PCT/JP2007/070705 WO2008053757A1 (fr) 2006-10-31 2007-10-24 Plaque d'impression en creux

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010158825A (ja) * 2009-01-08 2010-07-22 National Printing Bureau 特殊網点印刷物、並びに特殊網点印刷物を構成する特殊網点の作製方法、作製装置及び作製プログラム

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08146594A (ja) * 1994-11-22 1996-06-07 Dainippon Printing Co Ltd グラビア印刷版
JPH0943835A (ja) * 1995-08-02 1997-02-14 Think Lab Kk 網グラビア印刷版

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10157273A (ja) * 1996-11-29 1998-06-16 Dainippon Printing Co Ltd グラビア印刷物および印刷版

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08146594A (ja) * 1994-11-22 1996-06-07 Dainippon Printing Co Ltd グラビア印刷版
JPH0943835A (ja) * 1995-08-02 1997-02-14 Think Lab Kk 網グラビア印刷版

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010158825A (ja) * 2009-01-08 2010-07-22 National Printing Bureau 特殊網点印刷物、並びに特殊網点印刷物を構成する特殊網点の作製方法、作製装置及び作製プログラム

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JPWO2008053757A1 (ja) 2010-02-25
JP5063611B2 (ja) 2012-10-31

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