Abstract: A method for manufacturing a multi-piece substrate includes preparing a first frame having a connecting portion to which a first piece substrate is to be connected, forming on a portion of the first piece substrate connected to a second frame a conductive pattern having a contour corresponding to the periphery of the connecting portion of the first frame, irradiating laser along the boundary between the second frame and the conductive pattern on the first piece substrate such that the first piece substrate having a joint portion which engages with the connecting portion of the first frame is detached from the second frame, and fitting the joint portion of the first piece substrate into the connecting portion of the first frame such that the first piece substrate is connected to the first frame.

Abstract: A method for manufacturing a multi-piece substrate includes preparing a first frame having a connecting portion to which a first piece substrate is to be connected, forming on a portion of the first piece substrate connected to a second frame a conductive pattern having a contour corresponding to the periphery of the connecting portion of the first frame, irradiating laser along the boundary between the second frame and the conductive pattern on the first piece substrate such that the first piece substrate having a joint portion which engages with the connecting portion of the first frame is detached from the second frame, and fitting the joint portion of the first piece substrate into the connecting portion of the first frame such that the first piece substrate is connected to the first frame.

Abstract: A method for manufacturing a polyimide sleeve where a polyimide sleeve of a high quality can be manufactured easily with a superior yield. A sleeve of a release resin is fitted on a planished metal core or a core at least whose outer surface is made of a release resin, and a polyimide precursor solution is applied on its outer surface. Next, after generating an imide reaction of the polyimide precursor by heating to form an almost completely cured polyimide sleeve, this polyimide sleeve is removed from the core together with the sleeve of the release resin. Furthermore, the polyimide sleeve is separated from the sleeve of the release resin.

Abstract: A method for manufacturing a polyimide sleeve where a polyimide sleeve of a high quality can be manufactured easily with a superior yield. A sleeve of a release resin is fitted on a planished metal core or a core at least whose outer surface is made of a release resin, and a polyimide precursor solution is applied on its outer surface. Next, after generating an imide reaction of the polyimide precursor by heating to form an almost completely cured polyimide sleeve, this polyimide sleeve is removed from the core together with the sleeve of the release resin. Furthermore, the polyimide sleeve is separated from the sleeve of the release resin.

Abstract: A method of manufacturing a rubber or plastic-coated roller such as a fixing roller to be used in the thermal fixing part of an electrophotographic copying machine.

Abstract: This invention concerns particularly a rubber or plastic-coated roller such as a fixing roller to be used in a thermal fixing part of an electrophotographic copying machine, and a method and an apparatus for production thereof.