US4369729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image recording apparatus
Assignee: Canon Inc
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Filing: 1981-08-10
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Granted: 1983-01-25
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Expires: 2001-08-10
Abstract
Abstract An image recording apparatus including an image forming station for causing an image bearing member to bear an unfixed image, a fixing station for fixing the unfixed image on the image bearing member, a transport member for transporting the image bearing member from the image forming station to the fixing station, and support device for supporting the transport member; wherein the transport member is provided with a second resistivity in the part thereof which is in contact with the image bearing member and with a first resistivity in other part thereof, the first and second resistivities being so selected as not to disturb the unfixed image on the image bearing member.
Inventors
- 👤 Michio Shigenobu
- 👤 Masaharu Ohkubo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:21
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/65; G03G15/6555; G03G15/657
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
97 words
An image recording apparatus, comprising: an image depositing station for providing an unfixed image on an image bearing member; a fixing station for fixing the unfixed image on the image bearing member; and a guiding member for guiding the image bearing member from said image depositing station to said fixing station, said guiding member including a portion which is slidingly contactable with the image bearing member and a portion which is not contactable therewith; wherein said non-contact portion has a first resistivity, and said contact portion has a second resistivity which is lower than the first resistivity.
Claim 2
Dependent Claim
97 words
An image recording apparatus, comprising: an image depositing station for providing an unfixed image on an image bearing member; a fixing station for fixing the unfixed image on the image bearing member; and a guiding member for guiding the image bearing member from said image depositing station to said fixing station, said guiding member including a portion which is slidingly contactable with the image bearing member and a portion which is not contactable therewith; wherein said non-contact portion has a first resistivity, and said contact portion has a second resistivity which is lower than the first resistivity.
Claim 3
Dependent Claim
27 words
An apparatus according to claim 1, wherein said guiding member includes a substrate and a coating thereon, which coating forms said contact portion having the second resistivity.
Claim 4
Dependent Claim
17 words
An apparatus according to claim 2, wherein said substrate forms said non-contact portion having the first resistivity.
Claim 5
Dependent Claim
28 words
An apparatus according to claim 3, wherein said first resistivity is the surface resistivity of said substrate, and said second resistivity is the surface resistivity of said coating.
Claim 6
Dependent Claim
28 words
An apparatus according to claim 4 wherein the first resistivity is not less than 10 10 Ω, and the second resistivity is not more than 10 9 Ω.
Claim 7
Dependent Claim
17 words
An apparatus according to claim 5, wherein the second resistivity is not less than 10 6 Ω.
Claim 8
Dependent Claim
28 words
An apparatus according to claim 3, wherein the first resistivity is the volume resistivity of said substrate, and said second resistivity is the surface resistivity of said coating.
Claim 9
Dependent Claim
28 words
An apparatus according to claim 7, wherein the first resistivity is not less than 10 10 Ω.cm, and the second resistivity is not more than 10 9 .
Claim 10
Dependent Claim
17 words
An apparatus according to claim 8, wherein the second resistivity is not less than 10 6 Ω.
Claim 11
Independent Claim
43 words
An apparatus according to any one of claims 2 to 9, wherein said substrate is molded from at least one material selected from the group consisting of ABS resins, polycarbonate resins and phenolic resins, and said coating is composed of an antistatic material.
Claim 12
Dependent Claim
48 words
An apparatus according to claim 10 wherein the antistatic material constituting said coating is composed of at least one material selected from the group consisting of quaternary ammonium salts, nonionic surface active agents, fluorinated anionic surface active agents, polystyrenesulfonates, quaternary ammonium acrylic polymers, and quaternary ammonium polyvinyl butyral.
Claim 13
Independent Claim
50 words
An apparatus according to any one of claims 2 to 9, wherein said substrate is molded from at least one material selected from the group consisting of ABS resins, polycarbonate resins, and phenolic resins, and said coating is composed of a mixture of a high-resistivity material and a resistance-reducing material.
Claim 14
Dependent Claim
38 words
An apparatus according to claim 12, wherein said coating is composed of at least one member selected from ABS resins, polycarbonate resins and phenolic resins mixed with at least one member selected from carbon black and organic dyes.
Claim 15
Dependent Claim
115 words
An image recording apparatus, comprising: an image depositing station for providing an unfixed image on an image bearing member; a fixing station for fixing the unfixed image on the image bearing member; and a guiding member for guiding the image bearing member from said image depositing station to said fixing station, said guiding member including a portion which is slidingly contactable with the image bearing member and a portion which is not contactable therewith; wherein said contact portion has a surface resistivity which is lower than the volume resistivity of said guiding member, to prevent disturbance to the unfixed image during transport of the image bearing member along the contact portion of said guiding member.
Claim 16
Dependent Claim
115 words
An image recording apparatus, comprising: an image depositing station for providing an unfixed image on an image bearing member; a fixing station for fixing the unfixed image on the image bearing member; and a guiding member for guiding the image bearing member from said image depositing station to said fixing station, said guiding member including a portion which is slidingly contactable with the image bearing member and a portion which is not contactable therewith; wherein said contact portion has a surface resistivity which is lower than the volume resistivity of said guiding member, to prevent disturbance to the unfixed image during transport of the image bearing member along the contact portion of said guiding member.
Claim 17
Dependent Claim
40 words
An apparatus according to claim 14, wherein the surface resistivity of said guiding member is not less than 10 6 Ω but not more than 10 11 Ω, and the volume resistivity thereof is not less than 10 6 Ω.cm.
Claim 18
Dependent Claim
20 words
An image recording apparatus according to claim 14 or 15, wherein said guiding member is composed of a glass material.
Claim 19
Dependent Claim
25 words
An image recording apparatus according to claim 14 or 15, wherein said guiding member is composed of a high-resistivity material mixed with a resistance-reducing material.
Claim 20
Dependent Claim
31 words
An image recording apparatus according to claim 17, wherein said resistance-reducing material of said guiding member comprises at least one member selected from the group of electroconductive materials and organic dyes.
Claim 21
Dependent Claim
58 words
An image recording apparatus according to claim 18, wherein said transport member is composed of at least one material selected from the group consisting of glasses, polycarbonate resins, ABS resins, phenolic resins, ceramics and Al 2 O 3 ceramics, mixed with at least a material selected from the group consisting of carbon fibers, chromium dyes and carbon black.
Claim 22
Dependent Claim
40 words
An apparatus according to claim 1 or 14, wherein said guiding member is disposed adjacent to and upstream of a pair of rollers of said fixing station, and fixedly mounted to guide the image bearing member to said fixing rollers.
References Cited (Backward Citations)
US2990278A
Cited
US3206307A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-24 | 1986-07-26 | 1987-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-24 | 1990-07-26 | 1991-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-24 | 1994-07-26 | 1995-01-25 | $7700.00 | Window Closed / Lapsed |