Canon Kabushiki Kaisha

Kimoto Co, Ltd.

Yasuo Fujiwara

Hiroumi Morinaga

Atsushi Numagami

Toshiaki Nagashima

Kenji Matsuda

Yoshiya Nomura

Hideshi Kawaguchi

Hiroo Kobayashi

Hiroaki Miyake

Satoshi Kurihara

A remanufacturing method of a process cartridge detachably mountable to an image forming apparatus includes disassembling the process cartridge into a first frame having a developer accommodating portion for accommodating a developer and a second frame having a developer carrying member for carrying the developer supplied from the developer accommodating portion toward an image bearing member, thus exposing an opening of the first frame for permitting movement of the developer from the first frame to the second frame; removing residual which is resulted from a covering member having been used for sealing the opening and which remains around the opening, wherein the covering member has a sealing portion for sealing the opening and an extension for permitting the sealing portion to be torn with a part thereof remaining around the opening to open the opening, by pulling the extension, wherein the residual is a part of the sealing portion; mounting a fresh covering member to seal the opening; then supplying the developer accommodating portion with a fresh developer; and then engaging the first and second frames together.

Remanufacturing method for process cartridge, process cartridge and image forming apparatus

A toner accommodation container includes a toner containing portion for containing toner; a toner filling opening, formed in a side surface of said toner containing portion, for filling the toner into said toner containing portion; wherein said filling opening has a non-circular configuration substantially corresponding to a configuration of the side surface.

Toner Container cap, toner container, and process cartridge

The present invention provides a developer container having excellent sealability. In the developer container for containing a developer with an opening sealed, the sealant main component of the sealing member is a low-molecular-weight polyolefin polymer synthesized by using a metallocene catalyst, and a material compatible with the dispersed material dispersedly contained in the sealant layer of the sealing member is dispersedly contained in at least the sealing area of the container.

Developer container, process cartridge, developer sealing member and

A sealing member for sealing a developer accommodating portion for accommodating a developer includes (a) a sealing portion for openably sealing an opening of the developer accommodating portion; (b) an extended portion extending from the sealing portion, the extended portion having a width, measured in a direction of extension, which is smaller than that of the sealing portion; (c) a connecting edge for connecting an edge of the sealing portion adjacent the extended portion and a side edge of the extended portion extending in the direction of the extension; and (d) a tearable portion capable of being torn to open the opening sealed by the sealing portion, wherein an end of the tearable portion is provided in the sealing portion, and the other end thereof continues to the connecting edge, wherein the tearable portion extends between the one end and the other end substantially parallel with the extension direction.

Sealing member, process cartridge and developer supply container

A developer container having an opening for discharging a developer contained therein and a sealing surface portion surrounding the opening, is sealed with a sealing member having a sealant layer and applied onto the sealing surface portion of the developer container with the sealant layer. The sealant layer contains a dispersed material therein and the sealing surface portion of the developer container contains a dispersed material, which is mutually soluble with the dispersed material in the sealant layer. The dispersed material in the sealant layer preferably includes a thermoplastic elastomer. The resultant sealed developer container may be provided with a sound seal structure even at a relatively low sealing pressure causing a smaller sealing surface depression of the developer container, which allows re-sealing of the container.

A tearable sealing member for unsealably sealing an opening of a developer container for containing a developer for an image forming apparatus includes a seal film for closing the opening, a flexible tape extending along a surface of the seal film, wherein the seal film is an uniaxially orientated foamed resin material and has an average density of not less than 0.65 g/cc and not more than 0.9 g/cc, measured under JIS K6758, and wherein the seal has a heat contraction rate in the orientated direction of not less than 10% and not more than 10%.

Tearable sealing member, developing apparatus and process cartridge

A developing apparatus for developing a latent image formed on an image bearing member includes a first frame having a developer container for containing a developer; a second frame having a developer carrying member for carrying the developer supplied from the developer container to supply the developer to the latent image; a sealing member for sealing an opening for supplying the developer from the developer container to the developer carrying member; wherein the sealing member is pulled between the first frame and the second frame along a pulling path in a pulling direction, whereby the opening is opened and projections, disposed at both sides of the pulling path downstream of the opening in the pulling direction, are provided for limiting the pulling direction of a sealing member.

Developing apparatus with a removable sealing film and process cartridge

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.

Frame, developing apparatus, process cartridge and electro-photographic

A thin primary cell formed with a combination of a positive current collection layer, a positive active layer, a solid polyelectrolyte layer and a thin metallic film layer which are successively laminated onto an insulating material. Since this thin primary cell employs a solid polyelectrolyte as an electrolyte, it is not only free from liquid leakage but also formable on a film or sheet.

Growing community of inventors

Urawa, Japan

Yasuo Fujiwara