US5128715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Print cartidge and image forming apparatus employing the same
Assignee: Fujifilm Business Innovation Corp
•
Filing: 1991-03-18
•
Granted: 1992-07-07
•
Expires: 2011-03-18
Abstract
Abstract A print cartridge having: a housing; an image bearing member rotatably supported on the housing; and a power transmit member for connecting the image bearing member to a drive shaft of metal projected from a body of an apparatus. The print cartridge is withdrawable from the apparatus body. The image bearing member includes a cylindrical drum and a flange fixedly mounted on one end of the drum; the flange having a metal portion provided at a central portion thereof, and a resin portion provided around the metal portion. The metal portion has at an axis of rotation of the flange a shaft support portion for rotatably supporting the drive shaft. The metal portion has a first fitting portion provided on one side thereof directed toward the power transmit member. The power transmit member has a second fitting portion provided on one side thereof directed toward the flange. The first fitting portion and the second fitting portion are fitted together in the direction of rotation of the image bearing member.
Inventors
- 👤 Tetsuya Furuyama
- 👤 Harufumi Itoh
- 👤 Kohyu Shigemori
- 👤 Hideaki Ohike
- 👤 Tsutomu Tetsuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:34
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/16; G03G21/18; G03G21/1839; G03G21/1857; G03G21/186; G03G15/00; G03G15/75; G03G15/757; G03G2221/00; G03G2221/16; G03G2221/1651; G03G2221/1657; G03G2221/166; G03G2221/1669; G03G2221/18; G03G2221/183
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
191 words
A print cartridge, being withdrawable from an apparatus body, comprising: a housing; an image bearing member rotatably supported on said housing; and a power transmit member for connecting said image bearing member to a drive shaft of metal projected from a body of said apparatus; wherein said image bearing member includes a cylindrical drum and a flange fixedly mounted on one end of said drum; said flange has a metal portion provided at a central portion thereof, and a resin portion provided around said metal portion; said metal portion has at an axis of rotation of said flange a shaft support portion for rotatably supporting said drive shaft; said metal portion has a first fitting portion provided on one side thereof directed towards said power transmit member; said power transmit member has a second fitting portion provided on one side thereof directed toward said flange; and said first fitting portion and said second fitting portion are fitted together in the direction of rotation of said image bearing member; and further comprising a connecting means for electrically connecting a reverse surface of said drum to said apparatus body via said metal portion.
Claim 2
Dependent Claim
191 words
A print cartridge, being withdrawable from an apparatus body, comprising: a housing; an image bearing member rotatably supported on said housing; and a power transmit member for connecting said image bearing member to a drive shaft of metal projected from a body of said apparatus; wherein said image bearing member includes a cylindrical drum and a flange fixedly mounted on one end of said drum; said flange has a metal portion provided at a central portion thereof, and a resin portion provided around said metal portion; said metal portion has at an axis of rotation of said flange a shaft support portion for rotatably supporting said drive shaft; said metal portion has a first fitting portion provided on one side thereof directed towards said power transmit member; said power transmit member has a second fitting portion provided on one side thereof directed toward said flange; and said first fitting portion and said second fitting portion are fitted together in the direction of rotation of said image bearing member; and further comprising a connecting means for electrically connecting a reverse surface of said drum to said apparatus body via said metal portion.
Claim 3
Dependent Claim
18 words
A print cartridge according to claim 1, in which said metal portion is press-fitted in said resin portion.
Claim 4
Dependent Claim
18 words
A print cartridge according to claim 1, in which said metal portion is insert-molded in said resin portion.
Claim 5
Dependent Claim
207 words
An image forming apparatus comprising: (a) an apparatus body; (b) a drive shaft of metal projected from said apparatus body; and (c) a print cartridge including a housing, an image bearing member rotatably supported on said housing and a power transmit member for connecting said image bearing member to said drive shaft, said print cartridge being withdrawable from said apparatus body; wherein said image bearing member includes a cylindrical drum and a flange fixedly mounted on one end of said drum; said flange has a metal portion provided at a central portion thereof, and a resin portion provided around said metal portion; said metal portion has at an axis of rotation of said flange a shaft support portion for rotatably supporting said drive shaft; said metal portion has a first fitting portion provided on one side thereof directed toward said power transmit member; said power transmit member has a second fitting portion provided on one side thereof directed toward said flange; and said first fitting portion and said second fitting portion are fitted together in the direction of rotation of said image bearing member; and further comprising a connecting means for electrically connecting a reverse surface of said drum to said apparatus body via said metal portion.
Claim 6
Dependent Claim
207 words
An image forming apparatus comprising: (a) an apparatus body; (b) a drive shaft of metal projected from said apparatus body; and (c) a print cartridge including a housing, an image bearing member rotatably supported on said housing and a power transmit member for connecting said image bearing member to said drive shaft, said print cartridge being withdrawable from said apparatus body; wherein said image bearing member includes a cylindrical drum and a flange fixedly mounted on one end of said drum; said flange has a metal portion provided at a central portion thereof, and a resin portion provided around said metal portion; said metal portion has at an axis of rotation of said flange a shaft support portion for rotatably supporting said drive shaft; said metal portion has a first fitting portion provided on one side thereof directed toward said power transmit member; said power transmit member has a second fitting portion provided on one side thereof directed toward said flange; and said first fitting portion and said second fitting portion are fitted together in the direction of rotation of said image bearing member; and further comprising a connecting means for electrically connecting a reverse surface of said drum to said apparatus body via said metal portion.
References Cited (Backward Citations)
US4344700A
Cited
JPS56135879A
Cited
US4591258A
Cited
US4714337A
Cited
US4449809A
Cited
GB2180795A
Cited
US4975744A
Cited
US5023660A
Cited
JPS6421466A
Cited
US4922297A
Cited
JPH0244063A
Cited
US5052090A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-07-07 | 1996-01-06 | 1996-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-07-07 | 2000-01-06 | 2000-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-07-07 | 2004-01-06 | 2004-07-07 | $7700.00 | Window Closed / Lapsed |