Abstract: A method for reconditioning a development roller includes a roller portion for conveying developer, and a plastic flange portion connected to one end of the roller portion to transmit a driving force; wherein after the flange portion and roller portion are separated, a part of the roller portion, which is deformed is removed, and a flange portion, which is longer in the axial direction of the roller portion than the separated flange portion, is joined with said separated and shortened roller portion.

Abstract: A frame for a developing device for a process cartridge detachably mountable to a main assembly of an image forming apparatus, includes a developing frame having a mounting portion for mounting a developing roller for developing a latent image formed on an electrophotographic photosensitive member, the developing frame having a projection on a side opposed from a side provided with the mounting portion; a toner frame having a toner container portion for containing a toner usable for developing operation of the developing roller, the toner frame having an opening for supplying toner to the developing roller and a recess adjacent a longitudinal end of the opening; wherein the projection and recess are engageable with each other to couple the developing frame and the toner frame.

Abstract: Tetrafluoroethylene-perfluorovinylether copolymer having a specific melt viscosity of 30.times.10.sup.4 to 200.times.10.sup.4 poises at 372.degree. C., which comprises 99% to 90% by weight of tetrafluoroethylene and 1% to 10% by weight of perfluoro(ethyl vinyl ether) can produce a film or sheet having good resistance to flex fatigue by molding.

Abstract: A process for preparing a granular color developing agent, which comprises kneading a mixture of at least one excipient selected from the group consisting of water and lower alcohols and a p-phenylenediamine color developing agent, and granulating the mixture is disclosed.