JP2014073653A - Gravure offset printing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gravure offset printing method capable of preventing decline of a print quality by suppressing scraping failure of an ink.SOLUTION: In a gravure offset printing method, an ink 2 is supplied, while being scraped by the tip part 113a of a doctor blade 113, to a plate cylinder 111 around which an intaglio printing 112 is wound, on which a pattern P drawn by combining a first straight line L1 and a second straight line L2 in the direction orthogonal to the first straight line L1 is formed, then the ink 2 is delivered from the intaglio printing 112 to a blanket shell 114, and the ink 2 is transferred from the blanket shell 114 onto a sheet-like substrate 1. In the method, the pattern P is formed on the intaglio printing 112 so that the first and second lines L1, L2 of the pattern P on the intaglio printing 112 are faced to a direction crossing a straight line C1 in parallel with the tip part 113a of the doctor blade 113, and the substrate 1 is oriented on a flat bed 101 so that a pair of facing sides 1a of the substrate 1 becomes parallel to the second straight line L2 of the pattern P on the intaglio printing 112.

Description

  The present invention relates to a gravure offset printing method.

  In the field of printed electronics (PE), the use of a gravure offset printing machine has been studied. For example, in a flat bed type in which a sheet-like base material is arranged and printed on a flat plate (flat bed), a plate cylinder (gravure cylinder) in which an intaglio (gravure plate) on which a pattern such as a wiring pattern is formed is wound around the outer periphery ), The ink is fed to the intaglio plate while rotating the plate cylinder by contacting the doctor blade, and at the same time, the ink adhering to a portion other than the image is removed. While removing the scrap from the intaglio, the blanket cylinder around which the silicone blanket is wound is rotated while being brought into contact with the plate cylinder, so that the ink corresponding to the pattern of the intaglio of the plate cylinder is transferred to the ink of the blanket cylinder. After passing on the silicone blanket, the blanket cylinder rolls on the base of the flat bed. The Rukoto, the ink on the silicone blanket of the blanket cylinder and is capable of printing is transferred onto the substrate (e.g., refer to Patent Document 1, etc.).

JP 2005-186597 A

  By the way, generally, the wiring pattern in the PE field is mostly a pattern in which a first straight line and a second straight line in a direction orthogonal to the first straight line are combined. For this reason, when trying to print on the substrate using a plate cylinder in which the pattern of the wiring pattern is formed in an intaglio, an ink is formed in the vicinity of the straight line in the longitudinal direction of the doctor blade among the straight lines of the wiring pattern. In such a case, the scraping defect is likely to occur and the print quality may be deteriorated.

  For this reason, the present invention eliminates poor ink scraping even when printing a pattern in which the first straight line and the second straight line in the direction orthogonal to the first straight line are printed. It is an object of the present invention to provide a gravure offset printing method that can be suppressed to prevent a decrease in print quality.

  The gravure offset printing method according to the present invention for solving the above-described problem is a gravure plate in which a pattern is formed by combining a first straight line and a second straight line in a direction orthogonal to the first straight line. The ink corresponding to the pattern is supplied from the gravure plate to the silicone blanket cylinder while the ink is scraped off at the tip of the doctor blade. In the gravure offset printing method for transferring ink, the gravure so that the first straight line and the second straight line of the pattern of the gravure plate are in a direction intersecting with a straight line parallel to the tip of the doctor blade. A plate is disposed or the pattern is formed on the gravure plate, and a pair of opposite sides of the object is the gravure plate. While a so as to be parallel to the first straight line and the second straight line of the design of the A version, characterized by orienting the object.

  The gravure offset printing method according to the present invention is characterized in that, in the above-described gravure offset printing method, the pattern formed on the gravure plate is a wiring pattern.

  Moreover, the gravure offset printing method according to the present invention is characterized in that, in the gravure offset printing method described above, the object is a substrate having transparent conductivity.

  According to the gravure offset printing method according to the present invention, ink scraping failure even when printing a combination of a first straight line and a second straight line in a direction orthogonal to the first straight line. The print quality can be prevented from being reduced, and even when multiple patterns are printed on the target object, the maximum number of patterns can be imposed on the target object. It is possible to prevent a decrease in use efficiency.

It is a schematic block diagram of the principal part of the gravure offset printing machine used for 1st embodiment of the gravure offset printing method which concerns on this invention. It is a schematic explanatory drawing showing the relationship between the intaglio of the printing cylinder of the gravure offset printing machine of FIG. 1, and a doctor blade. It is a schematic explanatory drawing showing the relationship between the base material of the gravure offset printing machine of FIG. 1, a blanket cylinder, and a flat bed. It is operation | movement explanatory drawing of the gravure offset printing machine of FIG. It is action explanatory drawing of the gravure offset printing machine of FIG. It is state explanatory drawing of the printed base material. It is a schematic structure and operation | movement explanatory drawing of the principal part of the gravure offset printing machine used for 2nd embodiment of the gravure offset printing method which concerns on this invention. It is a schematic explanatory drawing showing the relationship between the intaglio of the gravure offset printing machine of FIG. 7, and a doctor blade. It is a schematic explanatory drawing showing the relationship between the intaglio of a printing cylinder of another example of the gravure offset printing machine used for 1st embodiment of the gravure offset printing method which concerns on this invention, and a doctor blade. It is a schematic structure and operation | movement explanatory drawing of the principal part of the further another example of the gravure offset printing machine used for 1st embodiment of the gravure offset printing method which concerns on this invention. It is a schematic explanatory drawing showing the relationship between the intaglio of another example of the gravure offset printing machine used for 2nd embodiment of the gravure offset printing method which concerns on this invention, and a doctor blade. It is a schematic explanatory drawing of the principal part of the further another example of the gravure offset printing machine used for the 1st, 2nd embodiment of the gravure offset printing method which concerns on this invention.

  An embodiment of a gravure offset printing method according to the present invention will be described with reference to the drawings. However, the present invention is not limited to only the following embodiments described with reference to the drawings.

<First embodiment>
1st Embodiment of the gravure offset printing method which concerns on this invention is described based on FIGS.

  As shown in FIG. 1, a base material 1 such as a sheet-like ITO film or ITO glass having a transparent conductivity, which is an object, is placed on one side in the longitudinal direction on the flat bed 101 (right side in FIG. 1). It is supposed to be placed. On the other side in the longitudinal direction of the flat bed 101 (left side in FIG. 1), there are a plurality of patterns such as a wiring pattern in which a first straight line and a second straight line in a direction orthogonal to the first straight line are combined. A plate cylinder (gravure cylinder) 111 around which the formed intaglio (gravure plate) 112 is wound around the outer periphery is arranged so as to be rotatable in the axial direction in the width direction of the flat bed 101 (perpendicular to the paper surface in FIG. 1). It is installed. A doctor blade 113 is disposed above the plate cylinder 111 so that the tip end portion 113 a contacts the intaglio 112 of the plate cylinder 111.

  Ink 2 is supplied between the plate cylinder 111 and the doctor blade 113, and the doctor blade 113 is configured such that the tip end portion 113 a is moved along with the rotation of the plate cylinder 111. At the same time that the ink 2 is supplied to the pattern of the intaglio 112 of the plate cylinder 111, the ink 2 attached to portions other than the pattern of the intaglio 112 can be scraped off from the intaglio 112.

  A blanket cylinder (silicone blanket cylinder) 114 in which a silicone blanket is wound around the outer periphery of the plate cylinder 111 in the axial direction in the width direction of the flat bed 101 is rotatably contacted. It can move while rotating between one end side (right side in FIG. 1) and the other end side (left side in FIG. 1) of the flat bed 101, on the base material 1 on the flat bed 101. Can be rolled while being in contact with the substrate 1.

  Further, as shown in FIG. 2, the intaglio 112 of the plate cylinder 111 has a pattern P in which a first straight line L1 and a second straight line L2 in a direction orthogonal to the first straight line L1 are combined. A plurality of plate cylinders 111 are formed side by side in the width direction (left and right direction in FIG. 2) and the top and bottom direction (up and down direction in FIG. 2). The pattern P of the intaglio 112 has an angle θ between the first straight line L1 and the straight line C1 parallel to the axial direction of the plate cylinder 111, that is, the straight line C1 parallel to the tip 113a of the doctor blade 113. The second straight line L2 is formed on the intaglio 112 so as to face the direction intersecting the straight line C1 at an angle of 90 ° + θ (or 90 ° −θ). ing.

  Further, as shown in FIG. 3, the base material 1 has a pair of opposing sides 1a parallel to the first straight line L1 of the pattern P of the intaglio 112 of the plate cylinder 111. In other words, in other words, it intersects the straight line C1 parallel to the axial direction of the blanket cylinder 114, that is, the straight line C1 parallel to the distal end portion 113a of the doctor blade 113 at an angle of 90 ° + θ (or 90 ° −θ). For example, the plate cylinder 111 is disposed on the flat bed 101 so as to be orthogonal to the second straight line L2 of the pattern P of the intaglio 112, in other words, to intersect the straight line C1 at an angle θ. Has been.

  In other words, the base material 1 has another set of opposing sides 1b orthogonal to the first straight line L1, in other words, intersecting the straight line C1 at an angle θ, in other words, the first It is arranged on the flat bed 101 so as to be parallel to the second straight line L2, in other words, to intersect the straight line C1 at an angle of 90 ° + θ (or 90 ° −θ).

  In FIGS. 1 and 3, reference numeral 104 denotes a positioning and holding for positioning the base material 1 with respect to the flat bed 101 so that the base material 1 is oriented with respect to the blanket cylinder 114. It is a member.

  A gravure offset printing method using the gravure offset printing machine according to this embodiment will be described below.

  After the substrate 1 is oriented and placed on the flat bed 101 by the positioning and holding member 104 in the above-described orientation, the plate cylinder 111 and the doctor are rotated while the plate cylinder 111 and the blanket cylinder 114 are rotated. When the ink 2 is supplied to the blade 113, the ink 2 is supplied to the straight lines L1 and L2 of the pattern P of the intaglio 112 of the plate cylinder 111 by the tip 113a of the doctor blade 113. At the same time, it is scraped off from the portions of the pattern P of the intaglio 112 other than the straight lines L1 and L2, and is transferred onto the silicone blanket of the blanket cylinder 114 in a state corresponding to the straight lines L1 and L2 of the pattern P.

  At this time, as described above, the intaglio 112 of the plate cylinder 111 is directed so that the pattern P is directed in a direction in which the first straight line L1 intersects the straight line C1 at an angle θ. Since the second straight line L2 is formed so as to face a direction intersecting the straight line C1 at an angle of 90 ° + θ (or 90 ° −θ), the ink 2 is caused by the tip 113a of the doctor blade 113. Since it is surely scraped off, it is delivered onto the silicone blanket of the blanket cylinder 114 in a state accurately corresponding to the straight lines L1, L2 of the picture P.

  In this way, when the ink 2 corresponding to the pattern P is transferred onto the silicone blanket of the blanket cylinder 114, the blanket cylinder 114 is on the other end side (left side in FIG. 1) of the flat bed 101. 1 to the one end side (right side in FIG. 1) while rotating while rolling on the base material 1 to transfer the ink 2 on the silicone blanket onto the base material 1. Print (see FIG. 4).

  At this time, as described above, the base 1 is arranged such that the side 1a is parallel to the first straight line L1 of the pattern P, that is, the side 1b is the second of the pattern P. Since it is arranged on the flat bed 101 so as to be parallel to the straight line L2, the first straight line L1 is parallel to the side 1a and the second is set to the side 1b. The pattern P is printed so that the straight line L2 is parallel (see FIG. 5).

  For this reason, as shown in FIG. 6, the said base material 1 is printed in multiple numbers with the said pattern P, without producing a useless space.

  Therefore, according to the present embodiment, ink 2 is used even when the pattern P is combined with the first straight line L1 and the second straight line L2 in the direction orthogonal to the first straight line L1. Scratch defects can be suppressed to prevent deterioration in print quality, and even when a plurality of the patterns P are printed on the base material 1, the maximum number of the above-mentioned base material 1 The pattern P can be imposed, and the use efficiency of the base material 1 can be prevented from being lowered.

<Second Embodiment>
A second embodiment of the gravure offset printing method according to the present invention will be described with reference to FIGS. In addition, about the part similar to embodiment mentioned above, the description similar to the description in embodiment mentioned above is abbreviate | omitted by using the code | symbol similar to the code | symbol used in description of embodiment mentioned above.

  As shown in FIG. 7, a plurality of the patterns P such as a wiring pattern combining the first and second straight lines L <b> 1 and L <b> 2 are formed on the other longitudinal side of the flat bed 101 (left side in FIG. 7). A flat intaglio (gravure plate) 212 is provided.

  Above the intaglio 212, a blanket cylinder (silicone blanket cylinder) 214 around which a silicone blanket is wound is rotatably disposed. The blanket cylinder 214 is disposed at one end side of the flat bed 101 (FIG. 7). It can move while rotating between the middle side and the right side) and the other end side (left side in FIG. 7), and is in contact with the upper surface of the intaglio 212 and the base material 1 on the flat bed 101 It can move up and down so that it can be separated.

  A doctor blade 213 is disposed above the intaglio 212 and on one end side (right side in FIG. 7) of the flat bed 21 with respect to the blanket cylinder 214, and the doctor blade 213 is disposed on the flat bed 101. The one end side (right side in FIG. 7) and the other end side (left side in FIG. 7) can be moved together with the blanket cylinder 214, and the leading end portion 213a of the intaglio It can be swung so that it can come into contact with and separate from the upper surface of 212.

  The ink 2 is supplied to the lower side of the distal end portion 213a of the doctor blade 213.

  Further, as shown in FIG. 8, the intaglio 212 has a pattern P in which the first straight line L1 and the second straight line L2 in a direction orthogonal to the first straight line L1 are combined in the width direction (FIG. 8 are formed side by side in the vertical direction and the vertical direction in FIG. The intaglio 212 is arranged so that the first straight line L1 faces the direction intersecting the straight line C1 parallel to the tip 213a of the doctor blade 213 at an angle θ, in other words, the second straight line L2 is The straight line C1 is arranged on the flat bed 101 so as to face the direction intersecting with the angle 90 ° + θ (or 90 ° −θ).

  In other words, in the embodiment described above, the first straight line L1 faces the direction intersecting the straight line C1 at an angle θ, in other words, the second straight line L2 is at an angle of 90 ° + θ ( Alternatively, the case of the plate cylinder 111 (circular intaglio) having the intaglio 112 on which the pattern P is formed so as to face the direction intersecting at 90 ° −θ has been described. In the present embodiment, the pattern P The first straight line L1 is directed in a direction intersecting the straight line C1 at an angle θ, in other words, the second straight line L2 of the pattern P is oriented at an angle of 90 ° + θ (or 90 ° −) with the straight line C1. The intaglio 212 (flat intaglio) is arranged on the flat bed 101 so as to be directed in the direction of crossing at θ).

  A gravure offset printing method using the gravure offset printing machine according to this embodiment will be described below.

  As in the case of the above-described embodiment, after the base material 1 is disposed on the flat bed 101 by the positioning and holding member 104 in the above-described direction, the blanket cylinder 214 is separated from the intaglio plate 212. The blanket cylinder 214 is raised, and the distal end 213a of the doctor blade 213 is lowered so that the distal end 213a of the doctor blade 213 contacts the intaglio plate 212, and the distal end 213a of the doctor blade 213 While supplying the ink 2 between the intaglio 212, the doctor blade 213 and the blanket cylinder 214 are directed from one end (right side in FIG. 7) to the other end (left side in FIG. 7) of the intaglio 212. The ink 2 is moved by the tip 213a of the doctor blade 213. It is scraped from the picture the said picture the straight line L1, L2 other than the portion of the P of the intaglio 212 is supplied to the straight line L1, L2 of the P of the intaglio 212 (see FIG. 7A).

  At this time, as described above, the intaglio 212 is oriented so that the first straight line L1 of the pattern P intersects the straight line C1 at an angle θ, in other words, the first line L1 of the pattern P. Since the second straight line L2 is arranged so as to face the straight line C1 at an angle of 90 ° + θ (or 90 ° −θ), the ink 2 is surely secured by the distal end portion 213a of the doctor blade 213. It is scraped off.

  After supplying the ink 2 to the straight lines L1 and L2 of the pattern P of the intaglio 212 in this way, the tip of the doctor blade 213 is moved away from the intaglio 212. While raising the 213a, the blanket cylinder 214 is lowered so that the blanket cylinder 214 contacts the intaglio 212, and the blanket cylinder 214 and the doctor blade 213 are moved to the other end of the intaglio 212 (the left side in FIG. 7). ) To one end (right side in FIG. 7), the ink 2 supplied to the straight lines L1, L2 of the pattern P of the intaglio 212 is placed on the silicone blanket of the blanket cylinder 214. Delivered in a state corresponding exactly to the straight lines L1, L2 of the pattern P (see FIG. 7B) .

  Then, the blanket cylinder 214 and the doctor blade 213 are continuously moved as they are, that is, when moved from the other end (left side in FIG. 7) to the one end (right side in FIG. 7) of the base material 1, The ink 2A on the silicone blanket of the blanket cylinder 214 is transferred onto the substrate 1 and printed (see FIG. 7C).

  At this time, the substrate 1 is arranged so that the side 1a is parallel to the first straight line L1 of the pattern P, that is, the side 1b is the pattern P, as in the case of the embodiment described above. Since it is arranged on the flat bed 101 so as to be parallel to the second straight line L2, the first straight line L1 is parallel to the side 1a and to the side 1b. The pattern P is printed so that the second straight line L2 is parallel.

  For this reason, a plurality of the patterns P are printed on the base material 1 without generating a useless space as in the case of the above-described embodiment (see FIG. 6).

  Therefore, according to the present embodiment, it is possible to obtain the same effect as that of the above-described embodiment.

<Other embodiments>
In the above-described first embodiment, the second straight line L2 is angled with the straight line C1 so that the first straight line L1 faces the direction intersecting the straight line C1 at an angle θ. The case where the intaglio 112 on which the pattern P is formed so as to face the direction intersecting at 90 ° + θ (or 90 ° −θ) is mounted on the plate cylinder 111 has been described as another embodiment. 9, the first straight line L1 of the picture P is directed in a direction intersecting the straight line C1 at an angle θ, in other words, the second straight line L2 of the picture P is changed to the straight line C1. It is also possible to mount the intaglio plate 312 on the plate cylinder so as to face the direction intersecting at an angle of 90 ° + θ (or 90 ° −θ).

  In the first embodiment described above, the ink 2 on the silicone blanket is transferred onto the substrate 1 and printed by moving the blanket cylinder 114 while rotating. As another embodiment, for example, as shown in FIG. 10, the ink 2 on the silicone blanket is transferred and printed on the base material 1 by moving the base material 1. Is also possible.

  Further, in the second embodiment described above, the first straight line L1 of the pattern P is directed in a direction intersecting the straight line C1 at an angle θ, in other words, the second line of the pattern P. Although the case where the intaglio 212 is disposed on the flat bed 101 so as to face the straight line L2 in a direction intersecting the straight line C1 at an angle of 90 ° + θ (or 90 ° −θ) has been described, as another embodiment For example, as shown in FIG. 11, the second straight line L2 and the straight line C1 have an angle of 90 ° + θ so that the first straight line L1 faces the direction intersecting the straight line C1 at an angle θ. It is also possible to arrange the intaglio 412 on which the pattern P is formed on the flat bed 101 so as to face the direction intersecting at (or 90 ° −θ).

  In the first and second embodiments described above, the pair of opposing sides 1a are parallel to the first straight line L1 of the pattern P, that is, the second of the pattern P is the second. Although the sheet-like base material 1 is arranged on the flat bed 101 so as to be orthogonal to the straight line L2, as another embodiment, for example, as shown in FIG. A web-like substrate 3 having transparent conductivity is provided so that the side 3a is parallel to the second straight line L2 of the pattern P, that is, to be orthogonal to the first straight line L1 of the pattern P. Even if it can be fed onto the flat bed 101, it is possible to achieve the same effects as those of the above-described embodiment.

  The gravure offset printing method according to the present invention suppresses ink scraping failure even when printing a combination of a first straight line and a second straight line in a direction orthogonal to the first straight line. As a result, the print quality can be prevented from being deteriorated, and even when a plurality of patterns are printed on the target object, the maximum number of patterns can be imposed on the target object. Since the reduction in efficiency can be prevented, it can be used extremely beneficially in various printing industries including the printed electronics (PE) field.

DESCRIPTION OF SYMBOLS 1 Base material 1a, 1b Side 2 Ink 3 Base material 3a Side 101 Flat bed 111 Plate cylinder 112 Intaglio 113 Doctor blade 113a Tip part 114 Blanket cylinder 212 Intaglio 213 Doctor blade 213a Tip part 214 Blanket cylinder 312, 412 Intaglio P Picture L1 1st 1 straight line L2 2nd straight line

Claims (3)

Supply the gravure plate with a pattern formed by combining the first straight line and the second straight line in a direction perpendicular to the first straight line while scraping ink at the tip of the doctor blade to the pattern. In the gravure offset printing method of transferring the corresponding ink from the gravure plate to the silicone blanket cylinder and transferring the ink from the silicone blanket cylinder to a web or sheet-shaped object,
The gravure plate is disposed in the gravure plate so that the first straight line and the second straight line of the pattern of the gravure plate face a direction intersecting with a straight line parallel to the tip of the doctor blade. While forming the above pattern,
The gravure is characterized in that the target object is oriented so that a pair of opposite sides of the target object is parallel to one of the first straight line and the second straight line of the pattern of the gravure plate. Offset printing method. The gravure offset printing method according to claim 1,
The gravure offset printing method, wherein the pattern formed on the gravure plate is a wiring pattern. The gravure offset printing method according to claim 2,
The gravure offset printing method, wherein the object is a base material having transparent conductivity.

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