US5126800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process cartridge and image forming apparatus usable with same featuring selectively engageable drive mechanism
Assignee: Canon Inc
•
Filing: 1991-02-19
•
Granted: 1992-06-30
•
Expires: 2011-02-19
Abstract
Abstract A process cartridge detachably mountable to an image forming apparatus includes a movable image bearing member having first and second drive transmitting portions; a developer carrying member for carrying a developer to supply the developer to the image bearing member, the developer carrying member having a third drive transmitting portion; wherein the third drive transmitting portion is selectively engageable with a first drive transmitting portion and a second drive transmitting portion.
Inventors
- 👤 Kazuo Shishido
- 👤 Tadayuki Tsuda
- 👤 Makoto Tanaka
- 👤 Shinichi Sasaki
- 👤 Takashi Hibi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:14
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/16; G03G21/18; G03G21/1839; G03G21/1857; G03G15/00; G03G15/06; G03G15/08; G03G15/0896; G03G15/75; G03G15/757; G03G2221/00; G03G2221/16; G03G2221/1651; G03G2221/1657; G03G2221/18; G03G2221/183
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
73 words
A process cartridge detachably mountable to an image forming apparatus, comprising: a movable image bearing member having first and second drive transmitting portions; a developer carrying member for carrying a developer to supply the developer to said image bearing member, said developer carrying member having a third drive transmitting portion; and wherein said third drive transmitting portion is engageable with one of said first drive transmitting portion and said second drive transmitting portion.
Claim 2
Dependent Claim
73 words
A process cartridge detachably mountable to an image forming apparatus, comprising: a movable image bearing member having first and second drive transmitting portions; a developer carrying member for carrying a developer to supply the developer to said image bearing member, said developer carrying member having a third drive transmitting portion; and wherein said third drive transmitting portion is engageable with one of said first drive transmitting portion and said second drive transmitting portion.
Claim 3
Dependent Claim
25 words
A process cartridge according to claim 1, wherein said first and second drive transmitting portions are provided adjacent an end of said image bearing member.
Claim 4
Dependent Claim
22 words
A process cartridge according to claim 1 or 2, wherein said first and second drive transmitting portions have different drive transmitting means.
Claim 5
Dependent Claim
23 words
A process cartridge according to claim 3, wherein said first and second drive transmitting portions have respective gears having different numbers of teeth.
Claim 6
Dependent Claim
48 words
A process cartridge according to claim 3, wherein a different peripheral speed of said developer carrying member is provided when the second drive transmitting portion is engaged with the third drive transmitting portion than when the first drive transmitting portion is engaged with the third drive transmitting portion.
Claim 7
Dependent Claim
46 words
A process cartridge according to claim 1, wherein when the process cartridge is mounted in said image forming apparatus, one of said first and second drive transmitting portions is engaged with driving means of said image forming apparatus to permit drive transmission from the driving means.
Claim 8
Dependent Claim
26 words
A process cartridge according to claim 1, wherein at least one of the first and second drive transmitting portions drives means in said image forming apparatus.
Claim 9
Dependent Claim
21 words
A process cartridge according to claim 7, wherein said means of said image forming apparatus is an image transfer rotatable member.
Claim 10
Dependent Claim
24 words
A process cartridge according to claim 1, further comprises means for charging said image bearing member and means for cleaning said image bearing member.
Claim 11
Dependent Claim
21 words
A process cartridge according to claim 1, wherein the selective engagement is dependent on the developer contained in said process cartridge.
Claim 12
Dependent Claim
26 words
A process cartridge according to claim 1, wherein the selective engagement is dependent on whether the developer contains in said process cartridge is magnetic or non-magnetic.
Claim 13
Dependent Claim
59 words
A process cartridge according to claim 11, wherein the process cartridge containing the non-magnetic developer includes an elastic member press-contacted to said developer carrying member to supply the developer to said developer carrying member and an elastic member press-contacted to said developer carrying member to regulate a thickness of a layer of the developer on said developer carrying member.
Claim 14
Dependent Claim
42 words
A process cartridge according to claim 11, wherein said process cartridge containing the magnetic developer includes a magnet in said developer carrying member and a regulating member for regulating a thickness of a layer of the developer on said developer carrying member.
Claim 15
Dependent Claim
38 words
A process cartridge according to claim 11, wherein said developer carrying member has a cylindrical member having an outside diameter which is different depending on whether the magnetic developer is used or whether the non-magnetic developer is used.
Claim 16
Dependent Claim
19 words
An apparatus according to claim 14, wherein said first and second drive transmitting portions have different drive transmitting means.
Claim 17
Dependent Claim
17 words
A cartridge according to claim 1, wherein said first and second drive transmitting portions comprise helical gears.
Claim 18
Dependent Claim
14 words
A cartridge according to claim 1, wherein said third gear is a helical gear.
Claim 19
Dependent Claim
130 words
An image forming apparatus, comprising: a process cartridge detachably mountable to an image forming apparatus, comprising: a movable image bearing member having first and second drive transmitting portions; a developer carrying member for carrying a developer to supply the developer to said image bearing member, said developer carrying member having a third drive transmitting portion, wherein said third drive transmitting portion is engageable with one of said first drive transmitting portion and said second drive transmitting portion; supporting means for detachably supporting said process cartridge; and driving means engageable with one of said first and second drive transmitting means of said image bearing member to transmit a driving force to said process cartridge when said process cartridge is mounted in said image forming apparatus by means of said supporting means.
Claim 20
Dependent Claim
130 words
An image forming apparatus, comprising: a process cartridge detachably mountable to an image forming apparatus, comprising: a movable image bearing member having first and second drive transmitting portions; a developer carrying member for carrying a developer to supply the developer to said image bearing member, said developer carrying member having a third drive transmitting portion, wherein said third drive transmitting portion is engageable with one of said first drive transmitting portion and said second drive transmitting portion; supporting means for detachably supporting said process cartridge; and driving means engageable with one of said first and second drive transmitting means of said image bearing member to transmit a driving force to said process cartridge when said process cartridge is mounted in said image forming apparatus by means of said supporting means.
Claim 21
Dependent Claim
17 words
An apparatus according to claim 18, wherein said first and second drive transmitting portions comprise helical gears.
Claim 22
Dependent Claim
14 words
An apparatus according to claim 18, wherein said third gear is a helical gear.
References Cited (Backward Citations)
US4829335A
Cited
JPH01145667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-06-30 | 1995-12-30 | 1996-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-30 | 1999-12-30 | 2000-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-30 | 2003-12-30 | 2004-06-30 | $7700.00 | Window Closed / Lapsed |