Patent ID: 7311042
Filing Date: 2007-12-25
Classification: B41C

Abstract:
1. A stencil screen platemaking apparatus in which a thermal head contacts with a screen with a heat-sensitive layer stretched on a screen frame of an art work material, while heating perforation is performed on the heat-sensitive layer of the screen into a desired pattern on the basis of input data from a controller, so that platemaking is performed, wherein a thermal head retaining frame to which the thermal head is attached and a platen roller retaining frame provided with a platen roller opposing the thermal head and with rotational driving means for the roller oppose and contact with each other in a manner permitting contact and separation between the thermal head and the platen roller, the platen roller retaining frame is provided with an auxiliary feed roller arranged in axi-parallel to and rotationally driving in synchronization with the platen roller, and wherein the thermal head retaining frame is provided with an idling roller that opposes and contacts with the auxiliary feed roller by pinching the screen with a heat-sensitive layer therebetween and thereby performs follower rotation, and the art work material is arranged between both retaining frames in a state that the thermal head and the platen roller are separated; the screen with a heat-sensitive layer is then pinched between the thermal head and the platen roller; and the platen roller and the auxiliary feed roller is then driven and revolved in a pinched state, so that platemaking is performed in a state that the thermal head is maintained at a fixed position and that the art work material is moved.