A process cartridge to be detachably attached to an electrophotographic image-forming apparatus body includes a cartridge frame; an electrophotographic photosensitive drum; a processing unit for acting on the electrophotographic photosensitive drum; a handle for gripping the process cartridge when the process cartridge is mounted on a first electrophotographic image-forming apparatus body; and an mounting unit provided in the cartridge frame, to which a handle member is attached for gripping the process cartridge when the process cartridge is mounted on a second electrophotographic image-forming apparatus body in a case where the second electrophotographic image-forming apparatus body is used on which the process cartridge is mounted in a direction different from that of the first electrophotographic image-forming apparatus. Thereby, by achieving commonality of the cartridge-frame structure, the system can corresponds to the first electrophotographic image-forming apparatus and the second electrophotographic image-forming apparatus.

Process cartridge and electrophotographic image forming apparatus

PURPOSE:To manufacture a high-performance flex-rigid wiring board at a low cost by using a bonding film, which is provided with mold releasing property selectively by optical hardening, and selectively bonding a flexible circuit board and a copper applied laminated board. CONSTITUTION:A flexible circuit board 1 having one or more circuit layers, wherein a circuit is formed and a cover lay is laminated, is manufactured. A copper applied laminated board 2, wherein circuit formation and surface treatment for circuit conductor is performed as required, is manufactured. Furthermore, a laminated film 5, which has the optical hardening property and the thermosetting property, and wherein mold releasing films 4 having the light transmitting property are arranged on the upper and rear surfaces of the bonding film 3 generating the mold releasing property by the optical hardening, is manufactured. Light is cast on the specified range of the covered film, and the film is hardened. Then, the mold releasing film is removed. Bonding films 3', which are locally hardened with light, are arranged on the upper and rear surfaces of the flexible circuit board 1. The copper applied laminated boards 2 are further arranged heated and compressed so as to form a unitary body. A hole is provided, plating is performed, a circuit is formed and cutting is performed.

Manufacture of wiring board

Processes for preparing a carbon black product having an organic group attached to the carbon black. In one process at least one diazonium salt reacts with a carbon black in the absence of an externally applied electric current sufficient to reduce the diazonium salt. In another process at least one diazonium salt reacts with a carbon black in a protic reaction medium. Carbon black products which may be prepared according to process of the invention are described as well as uses of such carbon black products in plastic compositions, rubber compositions, paper compositions, and textile compositions.

Carbon black reacted with diazonium salts and products

A process cartridge is mounted to or demounted from a movable member which is retractable in a horizontal direction to mount the process cartridge to the main assembly or to demount the process cartridge from the main assembly, and includes: an electrophotographic photosensitive member; a cleaning member for removing toner from the electrophotographic photosensitive member; a toner feeding portion for feeding by a toner feeding member toner removed from the electrophotographic photosensitive member by the cleaning member; a cartridge frame supporting at least the electrophotographic photosensitive member; a first projection projecting outwardly substantially coaxially with the electrophotographic photosensitive member, provided on one end surface of the cartridge frame; a third projection projecting outwardly at a position upstream of the first projection; a second projection projected outwardly substantially coaxially with the first projection, provided on the other end surface; and a fourth projection projected outwardly substantially coaxially with the third projection.

Process cartridge having guide projections and image forming apparatus using same

Electrophotographic image forming apparatus and process cartridge detachably mountable thereto comprising a positioning portion for engagement with a positioning member of a main assembly of the image forming apparatus

Method of producing printed circuit board

Method of forming semiconductive circuit

Method of manufacturing flexible printed circuit board

Method of producing flexible printed circuit board

PURPOSE:To provide the titled compsn. which can be easily cured by ultraviolet irradiation and gives a magnetic film having excellent adhesion, flexibility and resistance to wear and heat, consisting mainly of an epoxy resin, an ultraviolet- functional Lewis acid salt and a magnetic powder. CONSTITUTION:100-600pts.wt. magnetic powder having a particle size of 0.1- 10mum (e.g. barium ferrite) and optionally, a viscosity modifier such as a silicone compd. or a fatty acid ester, etc. are blended with 100pts.wt. of the combined quantity of an epoxy resin and an ultraviolet-functional Lewis acid salt (e.g. p-methoxybenzenediazonium hexafluorophosphate). The mixture is kneaded to obtain the desired ultraviolet-curing magnetic paint compsn. The compsn. is appled to a material to be coated, irradiated with ultraviolet light of 50-200W/cm for 10-60sec to cure it and heated at 80-200 deg.C for 1-60min to perfectly cure it.

Kojima Keiichi

Papers

Method of producing printed circuit board

Method of forming semiconductive circuit

Method of manufacturing flexible printed circuit board

Method of producing flexible printed circuit board

Ultraviolet-curing magnetic paint composition