JP2010105245A - Gravure platemaking roll - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gravure platemaking roll which does not cause the deficiency of conduction and disconnection or the like, even when using hard conductive ink or the like in forming the wiring of an electronic equipment or the like by printing. <P>SOLUTION: The gravure platemaking roll includes a plate base material, a copper plated layer which is arranged on the surface of the plate base material and formed with a plurality of gravure cells on the surface, and a chromium-plated layer covering the surface of the copper-plated layer, wherein at least part of the gravure cells has a groove which communicates with an adjacent cell. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a gravure plate-making roll, and more specifically, a gravure capable of forming a printed circuit, electrode, pixel or the like having no conductivity failure or disconnection and having excellent conductivity when conductive ink is printed on various substrates. It relates to a plate making roll.

  In gravure printing, a plate surface is created by forming minute recesses (gravure cells) according to plate making information on the plate base material, filling the gravure cell with ink, and transferring it to a printed material such as a plastic film. To do. In a general gravure plate roll, a copper plating layer (plate material) for forming a plate surface is provided on the surface of a metal hollow roll (plate base material) such as aluminum or iron, and an etching method or electronic engraving is applied to the copper plating layer. According to the method, a large number of gravure cells are formed according to the plate making information, and then a chromium plating layer for improving the printing durability of the gravure plate making roll is formed.

The gravure printing roll as described above is used for printing various printing materials such as paper and plastic film (Patent Document 1). In recent years, in addition to pattern printing, wiring and electrodes of various electronic devices. In addition, it is used for printing formation of pixels and the like.
JP 2004-16772 A

  As shown in FIG. 6, the plate surface of a conventional gravure plate roll is formed with a number of gravure cells 2 partitioned by partition walls 1 in the image area, and this gravure cell 2 is filled with ink 3. The ink 3 is transferred to a printing substrate such as a plastic film, and an ink image 3 as shown in FIG. 7 is formed. Since these individual transfer ink layers 3 (dots) are very small, the individual transfer ink layers cannot be visually recognized in the case of a normal image, and there is no problem in the formed image.

  However, when the printed material is an electronic circuit or the like, and the conductive ink used has a high viscosity (hard), when a thin line is printed and formed using a conventional gravure roll, each dot is adjacent to the dot. In some cases, the product becomes discontinuous. On the other hand, if low viscosity and high fluidity ink is used, each dot will be deformed and each dot will be continuous.In this case, when printing fine lines adjacent to each other, There is a risk of short circuiting.

  Accordingly, an object of the present invention is to provide a gravure plate-making roll which does not cause insufficient conduction or disconnection even when a hard conductive ink is used in printing formation of wiring of electronic equipment or the like.

The above object is achieved by the present invention described below. That is, the present invention comprises a plate base material, a copper plating layer provided on the surface of the plate base material and having a number of gravure cells formed on the surface, and a chromium plating layer covering the surface of the copper plating layer. The gravure printing roll is characterized in that at least a part of each gravure cell has a groove communicating with an adjacent cell.
Here, the width of the groove is preferably 10 to 30% of the length of one partition wall of the cell; and the partition wall is preferably formed in a bowl shape or an inverted bowl shape.

  Further, the present invention is characterized in that a pattern is printed and formed on a substrate using the gravure plate roll of the present invention and an ink having a viscosity of 18 seconds to 50 seconds with a mesh 3 in the Zancup method. An electronic component manufacturing method is provided.

  According to the present invention, it is possible to provide a gravure plate-making roll that does not cause insufficient conduction or disconnection even when a hard conductive ink is used in the formation of a printed wiring such as an electronic device.

  Next, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a view schematically showing a part of the plate surface of the image line portion of the gravure printing roll of the present invention. As shown in the drawing, a large number of gravure cells 2 partitioned by the partition walls 1 are formed on the plate surface of the image line portion of the gravure plate making roll of the present invention, and these individual cells 21 (indicated by dotted lines) are adjacent to each other. The cells 22, 23, 24, 25 are communicated with each other by the groove 4. When the ink 3 is filled in each cell as shown in FIG. 2 and the ink 3 is transferred to a plastic substrate or the like, the transferred ink layer 3 As shown in FIG. 2, all are continuous, and when the ink layer is conductive, there is no shortage of conduction or disconnection.

  FIG. 3 is a view showing a part of a plate surface of a gravure plate making roll according to another embodiment of the present invention, in which partition walls 1 forming cells 2 (indicated by dotted lines) are formed in a bowl shape. Also in this case, the cell 21 communicates with the adjacent cells 22, 23, 24, 25 by the groove 4. Also in this embodiment, as described above, when conductive ink is printed with this plate-making roll, when the ink layer is conductive as described above, there is no shortage of conduction or disconnection in the printed circuit or the like. In addition, as shown in FIG. 3, the edge part of the partition 1 which faces the groove | channel 4 is formed in a bowl shape, and an ink retainability and the excessive flow of ink can be suppressed by making a partition into a bowl shape. Further, the illustrated saddle shape may be an inverted saddle shape as shown in FIG.

  In the gravure plate roll of the present invention as described above, the cell depth (partition wall height) is about 2 to 15 μm, and the cell pitch is preferably in the range of 100 to 200 lines per inch. The width of the groove 4 is preferably 10 to 30% of the length of the partition wall 1 of the cell 2. If the width is too narrow, the effect of the present invention may be insufficient, while the width is too large. Ink retention is reduced. The depth of the groove 4 is also preferably the same as the depth of the cell 2, but the groove 4 may be somewhat shallower than the cell 2.

  The plate base material used for the production of the gravure plate roll of the present invention as described above is a conventionally known metal hollow roll such as aluminum or iron, or a plastic hollow roll such as carbon fiber reinforced plastic (outside these hollow rolls). The diameter may be 10 to 30 cm, and the length may be 20 to 200 cm). A copper plating layer (thickness of 0.1 to 0.2 μm) is formed on the surface of the plate base material by copper plating, and a desired cell pattern is baked and developed by applying a photosensitive solution to the plate cylinder surface. The cell pattern of the desired shape is formed on the entire surface by an etching method that forms a desired cell pattern by etching, or a diamond engraving needle is mechanically operated by a digital signal to form a cell pattern. The gravure plate making roll of the present invention can be obtained by applying chromium plating according to a conventional method.

  The distance between the partition walls 1 of the cells 2 shown in FIG. 3 is preferably about 10 to 30 μm, b is 100 to 200 μm, c is 20 to 60 μm, and d is about 100 to 200 μm in FIG. In the examples, a gravure platemaking roll having a of 17 μm, b of 141 μm, c of 46 μm, and d of 166 μm was prepared.

  As described above, the gravure printing roll of the present invention is used to form circuits, electrodes, pixels, etc. of various electric and electronic devices such as liquid crystal displays such as personal computers, mobile phones, and liquid crystal televisions, EL displays, plasma displays, and car navigation systems. As the ink to be used, a relatively hard conductive ink having a viscosity of 18 to 50 seconds with a mesh 3 in the Zancup method, and an ink having the same viscosity as the above including an organic light emitting material can be used. Preferably, it is useful for forming wirings, circuits, electrodes, pixels and the like of various electric / electrical devices. Moreover, as a printing material, the board | substrate of the film and sheet | seat which consist of engineering resins, such as an epoxy resin and a polyester resin used for the said various electric and electric equipment, is preferable.

  According to the present invention, it is possible to provide a gravure plate-making roll that does not cause insufficient conduction or disconnection even when a hard conductive ink is used in the formation of a printed wiring such as an electronic device.

The figure explaining 1 part of the plate surface of the gravure plate-making roll of this invention. The figure which shows the state by which the ink was transcribe | transferred with the gravure plate-making roll of FIG. The figure explaining 1 part of the printing plate surface of the gravure printing roll of another Example. The figure which shows the state by which the ink was transcribe | transferred by the gravure plate-making roll of FIG. The figure explaining 1 part of the printing plate surface of the gravure printing roll of another Example. The figure explaining 1 part of the plate surface of the conventional gravure printing roll. The figure which shows the state by which the ink was transcribe | transferred by the gravure plate-making roll of FIG.

Explanation of symbols

1: Partition 2: Cell 3: Ink 4: Groove

Claims (4)

  Each of the gravure cells comprises a plate base material, a copper plating layer provided on the surface of the plate base material and having a number of gravure cells formed on the surface, and a chromium plating layer covering the surface of the copper plating layer. A gravure plate making roll characterized in that at least a part of each has a groove communicating with an adjacent cell.   The gravure printing roll according to claim 1, wherein the width of the groove is 10 to 30% of the length of one partition wall of the cell.   The gravure platemaking roll according to claim 1, wherein the partition is formed in a bowl shape or an inverted bowl shape.   A gravure plate-making roll according to any one of claims 1 to 3, and ink having a viscosity of 18 seconds to 50 seconds in a mesh 3 in the Zancup method, and printing a pattern on a substrate, Manufacturing method for electrical and electronic parts.

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