Patent ID: 8853596
Filing Date: 2014-10-07
Classification: B41F,Y10T

Abstract:
1. A printer-machine-plate manufacturing device for manufacturing a printer machine plate comprising: a rectangular sheet of a magnetic material is formed into a cylindrical shape, wherein a cylinder section having an outer circumferential portion around which the sheet is wound and which has a groove into which an engagement portion of the sheet is removably inserted from its distal end, wherein, on the inner side of the outer circumferential portion of the cylinder section, a magnetic attraction member formed of a magnetic material is provided, and permanent magnets are provided in such a manner that orientation of the permanent magnets can be changed, and wherein permanent-magnet switching means is provided in order to switch the orientation of the permanent magnets between a magnetization position for magnetizing the magnetic attraction member and a demagnetization position for demagnetizing the magnetic attraction member, wherein the cylinder section has a columnar portion with at least two opposing projections so that the at least two opposing projections is: a first opposing projection defining a first axial groove for receiving a plate-shaped electrode for spot welding the sheet and the plate shaped electrode defines a second axial groove for receiving an inwardly bent engagement portion of the sheet; and a second opposing projection defining a third axial groove for receiving a diameter adjustment member and the diameter adjustment member includes a rectangular body with at least two radial holes having adjustment screws that threadably engage the radial holes to press against the second opposing projection and thereby selectively move the rectangular body radially inward and outward to selectively vary the outer circumference.