Patent US3574870A successfully refreshed from Google Patents.
Patent US5715510A successfully refreshed from Google Patents.
US5715510A
Expired / Lapsed
US
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Image forming apparatus having an intermediate transfer member and method of forming of image using the transfer member
Assignee: Canon Inc
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Filing: 1995-11-21
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Granted: 1998-02-03
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Expires: 2015-11-21
Abstract
Abstract An image forming apparatus having a first image supporting member and an intermediate transfer member for transfer of an image from the first image supporting member and means for transferring the transferred image on the intermediate transfer member to a second image supporting member; characterized in that the contact angle between a surface of the intermediate transfer member and water is 60° or above, and the sliding resistance of the surface is 200 g or below. The above image forming apparatus has excellent durability and good image forming properties under overall environmental conditions, and produces images without toner-filming.
Inventors
- 👤 Takashi Kusaba
- 👤 Hiroyuki Kobayashi
- 👤 Akihiko Nakazawa
- 👤 Atsushi Tanaka
- 👤 Tsunenori Ashibe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:42
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/14; G03G5/147; G03G5/14708; G03G5/14713; G03G5/14717; G03G5/14726; G03G15/00; G03G15/14; G03G15/16; G03G15/1605; G03G15/162; G03G7/00; G03G7/0006; G03G7/002
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
95 words
An image forming apparatus comprising: a first image supporting member; an intermediate transfer member for transferring thereto an image on said first image supporting member; and means for transferring the transferred image on said intermediate transfer member to a second image supporting member, wherein said intermediate transfer member has at least two layers, an outermost layer of said intermediate transfer member contains a lubricious powder, and the contact angle between the surface of said intermediate transfer member and water is 60° or above, and the sliding resistance of said surface is 200 g or below.
Claim 2
Dependent Claim
95 words
An image forming apparatus comprising: a first image supporting member; an intermediate transfer member for transferring thereto an image on said first image supporting member; and means for transferring the transferred image on said intermediate transfer member to a second image supporting member, wherein said intermediate transfer member has at least two layers, an outermost layer of said intermediate transfer member contains a lubricious powder, and the contact angle between the surface of said intermediate transfer member and water is 60° or above, and the sliding resistance of said surface is 200 g or below.
Claim 3
Dependent Claim
14 words
An apparatus according to claim 1, wherein the contact angle is 130° or below.
Claim 4
Dependent Claim
14 words
An apparatus according to claim 2, wherein the contact angle is 70° to 120°.
Claim 5
Dependent Claim
15 words
An apparatus according to claim 1, wherein the sliding resistance is 5 g or more.
Claim 6
Dependent Claim
16 words
An apparatus according to claim 4, wherein the sliding resistance is 10 g to 150 g.
Claim 7
Dependent Claim
29 words
An apparatus according to claim 1, wherein the content of the lubricious material in the outermost layer is 20% to 80% based on the weight of the outermost layer.
Claim 8
Dependent Claim
29 words
An apparatus according to claim 6, wherein the content of the lubricious material in the outermost layer is 25% to 75% based on the weight of the outermost layer.
Claim 9
Dependent Claim
23 words
An apparatus according to claim 1, wherein the electrical resistance of said intermediate transfer member is 10 1 Ω to 10 13 Ω.
Claim 10
Dependent Claim
22 words
An apparatus according to claim 8, wherein the electrical resistance of said intermediate transfer member is 10 2 Ω 10 10 Ω.
Claim 11
Dependent Claim
13 words
An apparatus according to claim 1, wherein said intermediate transfer member is cylindrical.
Claim 12
Dependent Claim
17 words
An apparatus according to claim 1, wherein said first image supporting member is an electrophotographic photosensitive member.
Claim 13
Dependent Claim
20 words
An apparatus according to claim 1, wherein an outermost layer of said electrophotographic photosensitive member contains particles of fluorocarbon polymer.
Claim 14
Dependent Claim
20 words
An apparatus according to claim 1, wherein said transferring means transfers a multi-colour image to said second image supporting member.
Claim 15
Dependent Claim
17 words
An apparatus according to claim 1, wherein said second image supporting member is a sheet of paper.
Claim 16
Dependent Claim
17 words
An apparatus according to claim 1, wherein said second image supporting member is an overhead projector sheet.
Claim 17
Dependent Claim
15 words
An apparatus according to claim 1, wherein said intermediate transfer member is an endless belt.
Claim 18
Dependent Claim
18 words
An apparatus according to claim 1, wherein said lubricious powder has an average particle size of 0.02-50 μm.
Claim 19
Dependent Claim
71 words
An intermediate transfer member for an electrophotographic image forming apparatus comprising: a surface supporting means; and a surface supported by said surface supporting means, wherein said intermediate transfer member has at least two layers, an outermost layer of said intermediate transfer member contains a lubricious powder, and the contact angle between said surface and water is 60° or more, and the sliding resistance of the surface is 200 g or below.
Claim 20
Dependent Claim
71 words
An intermediate transfer member for an electrophotographic image forming apparatus comprising: a surface supporting means; and a surface supported by said surface supporting means, wherein said intermediate transfer member has at least two layers, an outermost layer of said intermediate transfer member contains a lubricious powder, and the contact angle between said surface and water is 60° or more, and the sliding resistance of the surface is 200 g or below.
Claim 21
Independent Claim
93 words
A method for forming an image which comprises the steps of: transferring a toner image from a first image supporting member to an intermediate transfer member; transferring the toner image from said intermediate transfer member to a second image supporting member, wherein said intermediate transfer member has at least two layers, an outermost layer of said intermediate transfer member contains a lubricious powder, and the contact angle between the surface of said intermediate transfer member and water is 60° or above, and the sliding resistance of said surface is 200 g or below.
Claim 22
Independent Claim
93 words
A method for forming an image which comprises the steps of: transferring a toner image from a first image supporting member to an intermediate transfer member; transferring the toner image from said intermediate transfer member to a second image supporting member, wherein said intermediate transfer member has at least two layers, an outermost layer of said intermediate transfer member contains a lubricious powder, and the contact angle between the surface of said intermediate transfer member and water is 60° or above, and the sliding resistance of said surface is 200 g or below.
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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) | 2001-02-02 | 2001-08-04 | 2002-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-02-02 | 2005-08-04 | 2006-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-02-02 | 2009-08-04 | 2010-02-03 | $7700.00 | Window Closed / Lapsed |