Gravure plate for wiring printing

Patent metadata

Field	Value
Publication number	US-12280586-B2
Application number	US-202318121207-A
Country	US
Kind code	B2
Filing date	Mar 14, 2023
Priority date	Mar 22, 2022
Publication date	Apr 22, 2025
Grant date	Apr 22, 2025

Abstract

In a gravure plate for wiring printing on which a recessed portion defining a wiring pattern is formed on a plate surface, a projecting portion for reducing a volume of the recessed portion is formed on a bottom surface of the recessed portion. A contour of the projecting portion in cross section parallel to the plate surface has a semicircular arc shape, which protrudes toward one side in one direction that is parallel to the plate surface, on the one side. The recessed portion has a side wall that is composed of a plane orthogonal to the plate surface and faces the projecting portion at a distance of 15 μm or less without coming into contact with the projecting portion. The contour of the projecting portion has a semicircular arc shape, which protrudes toward the side wall, also on a side closer to the side wall.

First claim

What is claimed is:

1. A gravure printing plate for gravure-printing a wiring pattern with conductive ink including silver particles, the gravure printing plate comprising:
a groove to be filled with the conductive ink by a doctor blade squeegeeing the gravure printing plate in a predetermined squeegeeing direction, the groove having two parallel sidewalls and a bottom extending between the two parallel sidewalls; and
a bump standing on the bottom of the groove, the bump having a top face located in the groove, wherein
the bump consists, when viewed in the predetermined squeegeeing direction, of a front portion close to the doctor blade heading for the groove, and a rear portion being a remaining portion thereof,
the front portion of the bump has a shape of a half cylinder and face neither of the two parallel sidewalls within a range of smaller than six micrometers in front, in the predetermined squeegeeing direction, of the front portion,
the rear portion of the bump has a shape different from the shape of the front portion of the bump,
the bump consists, when viewed in a direction in which the two parallel sidewalls face each other, of a first portion apart from one of the two parallel sidewalls by a minimum interval between six micrometers and fifteen micrometers inclusive, and a second portion, being a remaining portion thereof, either abutting the other of the two parallel sidewalls to have a planar boundary therebetween or apart from the other of the two parallel sidewalls by a minimum interval not smaller than fifteen micrometers,
the first portion of the bump has a shape of a half cylinder, and
the second portion of the bump has a shape different from the shape of the first portion of the bump.

Assignees

• Japan Aviation Electronics Ind Ltd

Inventors

• Sakaue Akitoshi

Classifications

• B41F27/1281

  details of the printing plate ends · CPC title

• B41F21/08

  Combinations of endless conveyors and grippers · CPC title

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title

• G06F3/041

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title

• B41F9/06

  Details · CPC title