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CN-122008683-A - Plate cylinder

CN122008683ACN 122008683 ACN122008683 ACN 122008683ACN-122008683-A

Abstract

The invention provides a plate cylinder which suppresses the influence of frictional heat generated between the plate cylinder and a scraper to improve the transferability. The plate cylinder (10) is provided with a cylindrical core (11) and a cylindrical surface layer (12) covering the peripheral surface (11 a) of the core (11). The cylindrical surface layer portion (12) has an inner peripheral surface (12 b) facing the peripheral surface (11 a), and an outer peripheral surface (12 a) located on the side opposite to the side on which the inner peripheral surface (12 b) is located. A plurality of concave sections (120) are formed in the outer peripheral surface (12 a). A plurality of convex portions (210) are formed on the inner peripheral surface (12 b).

Inventors

  • Kyono Junpei

Assignees

  • 株式会社村田制作所

Dates

Publication Date
20260512
Application Date
20251106
Priority Date
20241111

Claims (6)

  1. 1. A plate cylinder, comprising: a core part having a cylindrical shape or a cylindrical shape, and A cylindrical surface layer portion that covers the peripheral surface of the core portion and has an inner peripheral surface facing the peripheral surface and an outer peripheral surface located on the opposite side to the inner peripheral surface, A plurality of concave portions are formed in the outer peripheral surface, A plurality of convex portions are formed on the inner peripheral surface.
  2. 2. The plate cylinder as recited in claim 1 wherein, At least a part of the gap between the convex portions overlaps with a part where the plurality of concave portions do not exist on the outer peripheral surface, as viewed in the radial direction of the core portion.
  3. 3. The plate cylinder according to claim 1 or 2, wherein, The plate cylinder is used for gravure printing for printing functional paste used for electronic parts, The plurality of concave portions of the outer peripheral surface constitute a print pattern.
  4. 4. The plate cylinder according to any one of claims 1 to 3, wherein, The cylindrical surface layer portion contains at least one of nickel, chromium, and DLC.
  5. 5. The plate cylinder according to any one of claims 1 to 4, wherein, The cylindrical surface layer portion includes a base material constituting the inner peripheral surface, The substrate is composed of a single member.
  6. 6. The plate cylinder as recited in claim 5 wherein, The thickness dimension of the substrate is 0.1mm or more and 0.15mm or less.

Description

Plate cylinder Technical Field The present disclosure relates to plate cylinders. Background For example, japanese patent application laid-open No. 2023-140689 (patent document 1) discloses a plate cylinder having a substantially cylindrical shape with a plurality of concave portions formed on an outer peripheral surface. The plate cylinder is used as a gravure printing plate for printing paste used for electronic parts. For example, in the production of a laminated ceramic capacitor, first, a plate cylinder is immersed in a paste tank in which paste serving as an internal electrode is stored, whereby the recess of the plate cylinder is filled with paste. Then, by bringing the squeegee into sliding contact with the outer peripheral surface of the plate cylinder, the surplus portion in the paste filled in the recess is scraped off by the squeegee. Next, an appropriate amount of paste filled in the recesses was transferred onto the green sheet. Prior art literature Patent literature Patent document 1 Japanese patent application laid-open No. 2023-140689 Disclosure of Invention Problems to be solved by the invention Here, when the excess paste is scraped off by the scraper as described above, the scraper is in sliding contact with the outer peripheral surface of the plate cylinder, and frictional heat is generated at the outer peripheral surface. When the characteristics such as viscosity of the paste filled in the concave portion are changed by the frictional heat, there is a possibility that the transfer property is lowered. Accordingly, the present disclosure has been made to solve the above-described problems, and an object thereof is to provide a plate cylinder in which transfer performance is improved by suppressing the influence of frictional heat generated between the plate cylinder and a squeegee. Solution for solving the problem A plate cylinder according to the present disclosure includes a core portion having a cylindrical shape or a columnar shape, and a cylindrical surface layer portion covering a peripheral surface of the core portion. The cylindrical surface layer portion has an inner peripheral surface facing the peripheral surface and an outer peripheral surface located on the opposite side of the inner peripheral surface. A plurality of concave portions are formed on the outer peripheral surface. A plurality of convex portions are formed on the inner peripheral surface. ADVANTAGEOUS EFFECTS OF INVENTION According to the present disclosure, a plate cylinder in which transfer performance is improved by suppressing the influence of frictional heat generated between the plate cylinder and a squeegee can be provided. Drawings Fig. 1 is a schematic view showing an intaglio printing apparatus provided with a plate cylinder according to an embodiment. Fig. 2 is a perspective view of the plate cylinder shown in fig. 1. Fig. 3 is a schematic enlarged view of a portion of the print pattern of the plate cylinder shown in fig. 1. Fig. 4 is a schematic cross-sectional view of the printed pattern shown in fig. 3. Fig. 5 is a schematic view of the cylindrical surface layer portion shown in fig. 4 as seen from the inner peripheral surface side. Fig. 6 is a flowchart showing a method of manufacturing a laminated electronic component using the plate cylinder shown in fig. 1. Fig. 7 is a schematic cross-sectional view of a part of a plate cylinder of a modification enlarged. Description of the reference numerals 1. Gravure printing apparatus 10, 10A, plate cylinder 11, core, 11a, peripheral surface, 12, cylindrical surface layer portion, 12a, outer peripheral surface, 12b, inner peripheral surface, 13, base material, 14, plating layer, 15, cover layer, 20, backup roll, 30, paste tank, 31, functional paste, 40, squeegee, 50, green sheet, 50A, dielectric sheet, 51, electrode pattern, 100, print pattern, 110, bank, 111, longitudinal dike, 112, bulkhead, 120, recess, 210, protrusion, 220, gap portion, N, nip portion, OP, opening face. Detailed Description Embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. In the embodiments shown below, the same or common portions are denoted by the same reference numerals in the drawings, and the description thereof will not be repeated. (Embodiment) < A > schematic Structure of plate cylinder and gravure printing device Fig. 1 is a schematic view showing an intaglio printing apparatus provided with a plate cylinder according to an embodiment. Fig. 2 is a perspective view of the plate cylinder shown in fig. 1. First, a schematic configuration of a plate cylinder 10 according to the present embodiment and a gravure printing apparatus 1 including the plate cylinder 10 will be described with reference to fig. 1 and 2. As shown in fig. 1 and 2, the gravure printing apparatus 1 includes a plate cylinder 10, a backup roll 20, a paste tank 30, and a squeegee 40. The plate cylinder 10 has a cylindrical shape as a whole. The