US5321482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process cartridge and image forming apparatus including a lubricant provided on a cleaning member for cleaning an image bearing member
Assignee: Canon Inc
•
Filing: 1992-02-25
•
Granted: 1994-06-14
•
Expires: 2012-02-25
Abstract
Abstract An image forming system for forming an image on a recording sheet, including a rotatable image bearing member, a cleaning member contacting the image bearing member to remove toner remaining on the image bearing member, and charger means contacting the image bearing member and disposed at a downstream side of the cleaning member in a direction of movement of the image bearing member. Lubricant having a low resistance is painted on a contacting portion of the cleaning member between the image bearing member and the cleaning member.
Inventors
- 👤 Hideyuki Yano
- 👤 Koichi Tanigawa
- 👤 Akihiko Takeuchi
- 👤 Hiroshi Sasame
- 👤 Yasumasa Otsuka
- 👤 Hiroto Hasegawa
- 👤 Hideo Nanatani
- 👤 Kazuaki Ono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:04
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/0005; G03G21/0011; G03G5/00; G03G5/005
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
102 words
An image forming apparatus for forming an image on a recording sheet, comprising: a rotatable image bearing member; a cleaning member contacting said image bearing member to remove toner remaining on said image bearing member; and charger means contacting said image bearing member and disposed at a downstream side of said cleaning member in a direction of rotation of said image bearing member; wherein a low resistance lubricant having a volume resistance value in the range of 10 5 to 10 11 Ωcm is provided on a contacting portion of said cleaning member between said image bearing member and said cleaning member.
Claim 2
Dependent Claim
102 words
An image forming apparatus for forming an image on a recording sheet, comprising: a rotatable image bearing member; a cleaning member contacting said image bearing member to remove toner remaining on said image bearing member; and charger means contacting said image bearing member and disposed at a downstream side of said cleaning member in a direction of rotation of said image bearing member; wherein a low resistance lubricant having a volume resistance value in the range of 10 5 to 10 11 Ωcm is provided on a contacting portion of said cleaning member between said image bearing member and said cleaning member.
Claim 3
Dependent Claim
15 words
An image forming apparatus according to claim 1, wherein said lubricant comprises graphite fluoride particles.
Claim 4
Dependent Claim
16 words
An image forming apparatus according to claim 1, wherein said lubricant comprises ultra fine acrylic powder.
Claim 5
Dependent Claim
20 words
An image forming apparatus according to claim 1, wherein said lubricant comprises a fine powder composed of a styrene group.
Claim 6
Dependent Claim
28 words
An image forming apparatus according to claim 1, wherein said lubricant is painted on said cleaning member, said lubricant including a low resistive powder dispersed in a solvent.
Claim 7
Dependent Claim
14 words
An image forming apparatus according to claim 5, wherein said solvent comprises ethyl alcohol.
Claim 8
Dependent Claim
14 words
An image forming apparatus according to claim 5, wherein said solvent comprises isopropyl alcohol.
Claim 9
Dependent Claim
19 words
An image forming apparatus according to claim 1, wherein said cleaning member comprises a cleaning blade made of rubber.
Claim 10
Dependent Claim
31 words
An image forming apparatus according to claim 1, wherein said charger means comprises a charger roller on which a coating layer obtained by dispersing conductive filler into nylon resin is provided.
Claim 11
Dependent Claim
17 words
An image forming apparatus according to claim 1, wherein the lubricant is coated on said cleaning member.
Claim 12
Dependent Claim
97 words
A process cartridge removably mountable to an image forming apparatus for forming an image on a recording sheet, comprising: a frame; an image bearing member mounted on said frame; charger means contacting said image bearing member to charge said image bearing member; and a cleaning member contacting said image bearing member to remove any foreign matters adhered thereto, wherein a low resistance lubricant having a volume resistance value in the range of 10 5 to 10 11 Ωcm is provided at a contacting portion of said cleaning member between said cleaning member and said image bearing member.
Claim 13
Dependent Claim
97 words
A process cartridge removably mountable to an image forming apparatus for forming an image on a recording sheet, comprising: a frame; an image bearing member mounted on said frame; charger means contacting said image bearing member to charge said image bearing member; and a cleaning member contacting said image bearing member to remove any foreign matters adhered thereto, wherein a low resistance lubricant having a volume resistance value in the range of 10 5 to 10 11 Ωcm is provided at a contacting portion of said cleaning member between said cleaning member and said image bearing member.
Claim 14
Dependent Claim
14 words
A process cartridge according to claim 11, where said lubricant comprises graphite fluoride particles.
Claim 15
Dependent Claim
15 words
A process cartridge according to claim 11, wherein said lubricant comprises ultra fine acrylic powder.
Claim 16
Dependent Claim
19 words
A process cartridge according to claim 11, wherein said lubricant comprises a fine powder composed of a styrene group.
Claim 17
Dependent Claim
27 words
A process cartridge according to claim 11, wherein said lubricant is painted on said cleaning member, said lubricant including a low resistive powder dispersed in a solvent.
Claim 18
Dependent Claim
13 words
A process cartridge according to claim 15, wherein said solvent comprises ethyl alcohol.
Claim 19
Dependent Claim
13 words
A process cartridge according to claim 15, wherein said solvent comprises isopropyl alcohol.
Claim 20
Dependent Claim
18 words
A process cartridge according to claim 11, wherein said cleaning member comprises a cleaning blade made of rubber.
Claim 21
Dependent Claim
19 words
A process cartridge according to claim 11, wherein said cleaning member comprises a chip blade made of urethane rubber.
Claim 22
Dependent Claim
30 words
A process cartridge according to claim 11, wherein said charger means comprises a charger roller on which a coating layer obtained by dispersing conductive filler into nylon resin is provided.
Claim 23
Dependent Claim
61 words
A process cartridge according to claim 11, wherein said charger means comprises a charger roller including a first layer made conductive by dispersing conductive carbon into butadiene rubber, a second layer surrounding said first layer and obtained by dispersing conductive carbon into urethane rubber, and a third layer surrounding said second layer and obtained by dispersing conductive filler into nylon resin.
Claim 24
Dependent Claim
12 words
A process cartridge according to claim 11, further including a developing means.
Claim 25
Dependent Claim
19 words
A process cartridge according to claim 11, further including an openable drum shutter for protecting said image bearing member.
Claim 26
Dependent Claim
17 words
An image forming apparatus according to claim 11, wherein the lubricant is coated on said cleaning member.
Claim 27
Dependent Claim
113 words
An image forming apparatus for forming an image on a recording sheet, usable with a process cartridge, said apparatus comprising: mounting means for removably mounting a process cartridge including a frame, an image bearing member mounted in said frame, charger means contacting said image bearing member to charge said image bearing member, a cleaning member contacting said image bearing member to remove any foreign matters adhered thereto, and a low resistance lubricant, having a volume resistance value in the range of 10 5 to 10 11 Ωcm, provided at a contacting portion of said cleaning member between said cleaning member and said image bearing member; and conveying means for conveying a recording sheet.
Claim 28
Dependent Claim
113 words
An image forming apparatus for forming an image on a recording sheet, usable with a process cartridge, said apparatus comprising: mounting means for removably mounting a process cartridge including a frame, an image bearing member mounted in said frame, charger means contacting said image bearing member to charge said image bearing member, a cleaning member contacting said image bearing member to remove any foreign matters adhered thereto, and a low resistance lubricant, having a volume resistance value in the range of 10 5 to 10 11 Ωcm, provided at a contacting portion of said cleaning member between said cleaning member and said image bearing member; and conveying means for conveying a recording sheet.
Claim 29
Dependent Claim
27 words
An image forming apparatus according to claim 25, further including transfer means for transferring a toner image formed on said image bearing member onto a recording sheet.
Claim 30
Dependent Claim
22 words
An image forming apparatus according to claim 25, further including fixing means for fixing a toner image transferred to a recording sheet.
Claim 31
Dependent Claim
15 words
An image forming apparatus according to claim 25, wherein said lubricant comprises graphite fluoride particles.
Claim 32
Dependent Claim
16 words
A image forming apparatus according to claim 25, wherein said lubricant comprises ultra fine acrylic powder.
Claim 33
Dependent Claim
20 words
An image forming apparatus according to claim 25, wherein said lubricant comprises a fine powder composed of a styrene group.
Claim 34
Dependent Claim
16 words
An image forming apparatus according to claim 25, wherein said image forming apparatus is a printer.
Claim 35
Dependent Claim
18 words
An image forming apparatus according to claim 25, wherein said image forming apparatus is an electrophotographic copying machine.
Claim 36
Dependent Claim
17 words
An image forming apparatus according to claim 25, wherein the lubricant is coated on said cleaning member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-06-13 | 1997-12-13 | 1998-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-13 | 2001-12-13 | 2002-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-06-13 | 2005-12-13 | 2006-06-14 | $7700.00 | Window Closed / Lapsed |