Patent US4401385A successfully refreshed from Google Patents.
US4401385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image forming apparatus incorporating therein ozone filtering mechanism
Assignee: Canon Inc
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Filing: 1982-06-03
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Granted: 1983-08-30
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Expires: 2002-06-03
Abstract
Abstract An ozone filtering mechanism in an image forming apparatus such as office copiers, etc. and its arrangement, wherein various component elements disposed in the image forming apparatus in such a manner that a flow path for a discharge current of ozone gas generated from a corona discharger and a flow path for heat current from a heat source such as a light source, etc. may be centralized at one place, thereby enabling a single ozone filter to be disposed at this portion of the centralized flow paths for perfect ozone filtration. Presence of the heat current at the time of the ozone filtration promotes adsorption and decomposition of ozone to augment the filtering effect to the maximum possible extent.
Inventors
- 👤 Hajime Katayama
- 👤 Tateki Nagaoka
- 👤 Yusaku Takada
- 👤 Shigeyoshi Onoda
- 👤 Atsushi Kubota
- 👤 Hiroshi Hara
- 👤 Masashi Suda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:31
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/02; G03G15/0258; G03G21/00; G03G21/20; G03G21/206
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
172 words
An image forming apparatus, comprising: a rotatable photosensitive member in a housing; a short focus image forming element array for exposure provided above said photosensitive member; image transfer means disposed beneath said photosensitive member; developing means provided on one side between said image forming element array and said image transfer means; cleaning means provided on the other side between said image forming element array and said image transfer means, said cleaning means being disposed in contact with said photosensitive member, for removing the residual developer from the image bearing member; guiding means, disposed upstream of the contact between said cleaning means and the photosensitive member with respect to movement of the photosensitive member, for guiding the developer removed from the member away from the surface thereof; a stopper member, mounted to a side of said cleaning means which is remote from the photosensitive member, for stopping the leading edge of the transfer material which incidentally comes to said cleaning member; and an ozone filter provided at the side of said cleaning means.
Claim 2
Dependent Claim
172 words
An image forming apparatus, comprising: a rotatable photosensitive member in a housing; a short focus image forming element array for exposure provided above said photosensitive member; image transfer means disposed beneath said photosensitive member; developing means provided on one side between said image forming element array and said image transfer means; cleaning means provided on the other side between said image forming element array and said image transfer means, said cleaning means being disposed in contact with said photosensitive member, for removing the residual developer from the image bearing member; guiding means, disposed upstream of the contact between said cleaning means and the photosensitive member with respect to movement of the photosensitive member, for guiding the developer removed from the member away from the surface thereof; a stopper member, mounted to a side of said cleaning means which is remote from the photosensitive member, for stopping the leading edge of the transfer material which incidentally comes to said cleaning member; and an ozone filter provided at the side of said cleaning means.
Claim 3
Dependent Claim
44 words
An apparatus according to claim 1, further comprising a cleaner housing having said cleaning means disposed therein and having an opening facing said photosensitive member adjacent the contact between said cleaning means and the photosensitive member, wherein said cleaning means includes a cleaning blade.
Claim 4
Dependent Claim
19 words
Apparatus according to claim 2, wherein said stopper means is integrally mounted to the backside of the cleaning blade.
Claim 5
Dependent Claim
150 words
An image forming apparatus wherein a developed image is formed on a surface of a movable image bearing member, and then transferred to a transfer material, whereafter the residual developer remaining on the image bearing member after the image transfer is removed to allow repeated use of the image bearing member, comprising: a cleaning member, contacted to said image bearing member, for removing the residual developer from the image bearing member; guiding means, disposed upstream of the contact between said cleaning member and the image bearing member with respect to movement of the image bearing member, for guiding the developer removed from the image bearing member away from the surface of said image bearing member; and stopper means, mounted to a side of said cleaning member which is remote from the image bearing member, for stopping the leading edge of the transfer material which incidentally comes to said cleaning member.
Claim 6
Dependent Claim
150 words
An image forming apparatus wherein a developed image is formed on a surface of a movable image bearing member, and then transferred to a transfer material, whereafter the residual developer remaining on the image bearing member after the image transfer is removed to allow repeated use of the image bearing member, comprising: a cleaning member, contacted to said image bearing member, for removing the residual developer from the image bearing member; guiding means, disposed upstream of the contact between said cleaning member and the image bearing member with respect to movement of the image bearing member, for guiding the developer removed from the image bearing member away from the surface of said image bearing member; and stopper means, mounted to a side of said cleaning member which is remote from the image bearing member, for stopping the leading edge of the transfer material which incidentally comes to said cleaning member.
Claim 7
Dependent Claim
45 words
An apparatus according to claim 4, further comprising a housing having said cleaning member disposed therein and having an opening facing said image bearing member adjacent the contact between said cleaning member and the image bearing member, wherein said cleaning member includes a cleaning blade.
Claim 8
Dependent Claim
20 words
An apparatus according to claim 5, wherein said stopper means is integrally mounted to the backside of the cleaning blade.
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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) | 1986-08-29 | 1987-02-28 | 1987-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-29 | 1991-02-28 | 1991-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-29 | 1995-02-28 | 1995-08-30 | $7700.00 | Window Closed / Lapsed |