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US 6,324,364 B1Granted
Electrophotographic photosensitive drum, process cartridge, and electrophotographic image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsYoshiya Nomura, Satoshi Kurihara, Teruhiko Sasaki
Life of this patent
Estimating the term…
Abstract
A cylindrical electrophotographic photosensitive drum of an electrophotographic image forming apparatus includes plural holes penetrating a metallic hollow cylindrical base body in a radial direction near its end portion, where the end portion of the base body and the holes are filled with resin, and a flange is formed by outset molding so as to integrate the base body and the flange.
Claims13
A cylindrical electrophotographic photosensitive drum of an electrophotographic image forming apparatus, comprising:
- a metallic hollow cylindrical base body having plural holes formed in a radial direction near an end portion of said base body;
- and
- a flange formed of molded resin, which fills said plurality of holes so as to integrate said base body and the flange.
A cylindrical electrophotographic photosensitive drum of an electrophotographic image forming apparatus, comprising:
- a metallic hollow cylindrical base body having plural holes penetrating the base body in a radial direction near an end portion of said base body;
- and
- a flange having a fitting portion fitted to an inner circumference of the end portion of said base body and a groove portion in said fitting portion;
- wherein the base body and the fitting portion of the flange are fitted to each other by aligning positions of the holes of said base body and the groove portion of said flange, and
- said base body and the flange are integrated with each other by molded resin disposed in the plural holes of said base body and the groove portion of said flange.
2 more elements
A cylindrical electrophotographic photosensitive drum of an electrophotographic image forming apparatus, comprising:
- a metallic hollow cylindrical base body having plural holes penetrating the base body in a radial direction near an end portion of said base body;
- and
- a flange having a fitting portion fitted to an inner circumference of the end portion of said base body and a groove portion in said fitting portion;
- wherein the base body and the fitting portion of the flange are fitted to each other by aligning positions of the holes of said base body and the groove portion of said flange;
- wherein said base body and the flange are integrated with each other by molded resin disposed in the holes of said base body and the groove portion of said flange;
- and
- wherein a clearance holding thin film for maintaining a clearance for development between said base body and a cylindrical shaped portion of a developer bearing member is simultaneously formed on a surface of said base body by the molded resin.
4 more elements
A process cartridge detachably mountable to a main body of an electrophotographic image forming apparatus, comprising:
- an electrophotographic photosensitive drum having plural holes penetrating a metallic hollow cylindrical base body formed in a radial direction near an end portion of said base body, and a flange formed of molded resin, which fills said plural holes so as to integrate said base body and the flange;
- and
- process means acting on said electrophotographic photosensitive drum.
A process cartridge detachably mountable to a main body of an electrophotographic image forming apparatus, comprising:
- an electrophotographic photosensitive drum including:
- a metallic hollow cylindrical base body having plural holes penetrating the base body in a radial direction near the end portion of the base body, and
- a flange having a fitting portion fitted to an inner circumference of the end portion of said base body and a groove portion in said fitting portion,
- the base body and the fitting portion of the flange being fitted to each other by aligning positions of the holes of said base body and the groove portion of said flange, and
- said base body and the flange being integrated with each other by molded resin disposed in the holes of said base body and the groove portion of said flange;
- and
- process means acting on said electrophotographic photosensitive drum.
4 more elements
A process cartridge detachably mountable to a main body of an electrophotographic image forming apparatus, comprising:
- an electrophotographic photosensitive drum including:
- a metallic hollow cylindrical base body having plural holes penetrating the base body in a radial direction near an end portion of said base body, and
- a flange having a fitting portion fitted to an inner circumference of the end portion of said base body and a groove portion in said fitting portion,
- wherein the base body and the fitting portion of the flange are fitted to each other by aligning positions of the holes of said base body and the groove portion of said flange,
- said base body and the flange are integrated with each other by molded resin disposed in the holes of said base body and the groove portion of said flange, and
- a clearance holding thin film for maintaining a clearance for development between said base body and a cylindrical shaped portion of a developer bearing member is simultaneously formed on a surface of said base body by the molded resin;
- and
- process means acting on said electrophotographic photosensitive drum.
5 more elements
An electrophotographic image forming apparatus for forming an image on a recording medium, comprising:
- an electrophotographic photosensitive drum having plural holes penetrating a metallic hollow cylindrical base body formed in a radial direction near an end portion of said base body, and a flange formed of molded resin, which fills said plural holes so as to integrate said base body and the flange;
- process means acting on said electrophotographic photosensitive drum;
- and
- conveying means for conveying said recording medium.
1 more element
An electrophotographic image forming apparatus for forming an image on a recording medium, comprising:
- an electrophotographic photosensitive drum including:
- a metallic hollow cylindrical base body having plural holes penetrating the base body in a radial direction near an end portion of said base body, and
- a flange having a fitting portion fitted to an inner circumference of the end portion of said base body and a groove portion in said fitting portion,
- wherein the base body and the fitting portion of the flange are fitted to each other by aligning positions of the holes of said base body and the groove portion of said flange, and
- said base body and the flange are integrated with each other by molded resin disposed in the holes of said base body and the groove portion of said flange;
- process means acting on said electrophotographic photosensitive drum;
- and
- conveying means for conveying said recording medium.
5 more elements
An electrophotographic image forming apparatus for forming an image on a recording medium, comprising:
- an electrophotographic photosensitive drum including:
- a metallic hollow cylindrical base body having plural holes penetrating the base body in a radial direction near an end portion of said base body, and
- a flange having a fitting portion fitted to an inner circumference of the end portion of said base body and a groove portion in said fitting portion,
- wherein the base body and the fitting portion of the flange are fitted to each other by aligning positions of the holes of said base body and the groove portion of said flange,
- said base body and the flange are integrated with each other by molded resin disposed in the holes of said base body and the groove portion of said flange, and
- a clearance holding thin film for maintaining a clearance for development between said base body and a cylindrical shaped portion of a developer bearing member is simultaneously formed on a surface of said base body by the molded resin;
- process means acting on said electrophotographic photosensitive drum;
- and
- conveying means for conveying said recording medium.
6 more elements
Dependencies are inferred from the claim text.