Patent ID: 9266319
Filing Date: 2016-02-23
CPC Classification: B41F,B41M,B41N,B41P,G03F

Claim Text:
1. A printing apparatus using an endless belt-shaped printing plate, comprising: a plate cylinder, a guide roller and the endless belt-shaped printing plate wound about the plate cylinder and the guide roller for printing on a continuous form supplied between the plate cylinder and an impression cylinder, wherein said plate cylinder and impression cylinder are each composed as a solid cylinder formed by filing or sawing, said plate cylinder is provided with feed pins which are disposed in rows at an even pitch along an outer periphery of the plate cylinder at both ends in the axial direction of the plate cylinder so as to project and retract freely and guided by a fixed cam ring and so as to project out of the plate cylinder surface in a region forming a central angle of at least 150 degrees of the plate cylinder opposite to the guide roller of the plate cylinder, said endless belt-shaped printing plate is provided with pin feed holes at marginal zones at both sides in a width direction of the endless belt-shaped printing plate so that the pin feed holes are disposed in rows along the longitudinal direction of the endless belt-shaped printing plate at an even pitch which is identical to the pitch of said feed pins, said endless belt-shaped printing plate is formed as an elongated resinous relief printing plate having a thickness less than 1 mm and a length of 6 m to 9 m and including abutting or joined ends, each end having an unevenness pattern wherein the unevenness patterns of both ends are engaged with each other and mutually bonded with one side adhesive tape applied from the printing surface side, and said pin feed holes formed at the marginal zones of the endless belt-shaped printing plate are engaged with said feed pins of the plate cylinder, thereby guiding the movement of the endless belt-shaped printing plate, the printing apparatus provides resinous relief printing at a high-resolution of micro-characters at a size of 0.5 to 0.3 point and/or photograph printing at 175-300 lines on the continuous form.