Printing plate unit, printing plate attachment device and printer
OwnerMasayuki Izumeinventor
Life of this patent
Estimating the term…
Abstract
To attach a printing plate to a printer readily and accurately, and avoid necessity of a large space for the storage of the printing plate. A printing plate unit 1 includes a printing plate 3 in which a plate section 9 is provided on a part of a front surface of a sheet 8 made of an elastic material and engaging protrusions 10 that protrude toward a back surface and extend in a width direction are provided at both longitudinal ends, and a printing plate coupling member 4 that is detachable from the printing plate 3 and couples both the engaging protrusions 10 of the cylindrical printing plate 3 to each other to keep the cylindrical shape of the printing plate 3.
Claims20
A printing plate unit comprising:
- a printing plate in which a plate section is provided on a part of a front surface of a sheet made of an elastic material, and engaging protrusions that protrude toward a back surface or a front surface and extend in a width direction are provided at both longitudinal ends;
- and
- a printing plate coupling member that is detachable from the printing plate, and engages with both the engaging protrusions of the printing plate which is formed to be cylindrical to couple both longitudinal ends of the cylindrical printing plate to each other.
A device for attaching a printing plate, in which a plate section is provided on a part of a front surface of a sheet made of an elastic material, and engaging protrusions that protrude toward a back surface or a front surface and extend in a width direction are provided at both longitudinal ends, to a plate driving shaft of a printer, the device comprising:
- a printing plate coupling member that is detachable from the printing plate and engages with both the engaging protrusions of the printing plate which is formed to be cylindrical to couple both longitudinal ends of the cylindrical printing plate to each other;
- and
- a cylindrical plate cylinder part that is fixedly provided at the plate driving shaft and has an outer periphery to which the cylindrical printing plate is attached from the side of a front end of the plate driving shaft, wherein
- the plate cylinder part includes a printing plate coupling member storing groove that stores the printing plate coupling member to which the cylindrical printing plate is coupled from the side of the front end of the plate driving shaft, an axial positioning stopper part that contacts a bottom end of the plate driving shaft of the printing plate coupling member, a printing plate coupling member guiding part that guides the printing plate coupling member to move in a predetermined range of the plate cylinder part in the radial direction, and a printing plate coupling member biasing device that biases the printing plate coupling member outward in the radial direction of the plate cylinder part.
Dependencies are inferred from the claim text.