US4785319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrographic apparatus
Assignee: Canon Inc
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Filing: 1987-07-31
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Granted: 1988-11-15
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Expires: 2007-07-31
Abstract
Abstract An electrographic apparatus includes a laser optical unit for scanningly deflecting a laser beam, a photosensitive member for receiving the laser beam from the laser optical unit to be scanned thereby, and an integrally molded frame provided with a first positioning portion for postioning and supporting the laser optical unit and a second positioning portion for postioning and supporting the photosensitive member.
Inventors
- 👤 Hitoshi Fujino
- 👤 Masanobu Kanoto
- 👤 Yutaka Kikuchi
- 👤 Yoshinori Sugiura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:53
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/16; G03G21/18; G03G21/1839; G03G21/1842; G03G21/1853; G03G15/00; G03G15/04; G03G15/04036; G03G15/04045; G03G15/04072; G03G21/1604; G03G21/1623; G03G21/1628; G03G21/1642; G03G21/1647; G03G21/1661; G03G21/1666; G03G2221/00; G03G2221/16; G03G2221/1606; G03G2221/1636; G03G2221/1651; G03G2221/1654; G03G2221/1669; G03G2221/1678; G03G2221/18; G03G2221/183
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
52 words
An electrographic apparatus, comprising: a photosensitve member; an optical unit for projecting onto said photosensitive member image information light formed in accordance with an electric signal; and an integrally molded frame provided with a first positioning portion for positioning the optical unit and a second positioning portion for positioning said photosensitive member.
Claim 2
Dependent Claim
52 words
An electrographic apparatus, comprising: a photosensitve member; an optical unit for projecting onto said photosensitive member image information light formed in accordance with an electric signal; and an integrally molded frame provided with a first positioning portion for positioning the optical unit and a second positioning portion for positioning said photosensitive member.
Claim 3
Dependent Claim
14 words
An apparatus according to claim 1, wherein said frame is of injection-molded synthetic resin.
Claim 4
Dependent Claim
42 words
An apparatus according to claim 1, further comprising an image transfer unit for transferring an image formed on said photosensitive member onto a recording material, wherein said frame is further provided with a third positioning portion for positioning said image transfer unit.
Claim 5
Dependent Claim
32 words
An apparatus according to claim 3, further comprising means for feeding the recording material, wherein said frame is further provided with a fourth positioning portion for positioning and supporting said feeding means.
Claim 6
Dependent Claim
34 words
An apparatus according to claim 1, wherein said laser optical unit includes a emitting source, means for scanningly deflecting the laser beam produced by the laser source and a supporting member for supporting them.
Claim 7
Dependent Claim
26 words
An apparatus according to claim 1, wherein said laser optical unit is a beam deflecting unit for scanningly deflecting the laser beam directed thereto without deflection.
Claim 8
Dependent Claim
20 words
An apparatus according to claim 6, wherein the deflecting unit includes a rotational mirror and a driver for rotating it.
Claim 9
Dependent Claim
97 words
An electrographic apparatus to which a process cartridge is detachably mountable, the process cartridge including a photosensitive member to be scanned by image information light and at least one process means actable on the photosensitive member, said apparatus comprising: an optical unit for projecting onto said photosensitive member image information light formed in accordance with an electric signal; and an integrally molded frame provided with a first positioning portion for positioning said optical unit, a second positioning portion for positioning the process cartridge and a third positioning portion for positioning the photosensitive member in said process cartridge.
Claim 10
Dependent Claim
97 words
An electrographic apparatus to which a process cartridge is detachably mountable, the process cartridge including a photosensitive member to be scanned by image information light and at least one process means actable on the photosensitive member, said apparatus comprising: an optical unit for projecting onto said photosensitive member image information light formed in accordance with an electric signal; and an integrally molded frame provided with a first positioning portion for positioning said optical unit, a second positioning portion for positioning the process cartridge and a third positioning portion for positioning the photosensitive member in said process cartridge.
Claim 11
Dependent Claim
14 words
An apparatus according to claim 8, wherein said frame is of injection-molded synthetic resin.
Claim 12
Dependent Claim
42 words
An apparatus according to claim 8, further comprising an image transfer unit for transferring an image formed on said photosensitive member onto a recording material, wherein said frame is further provided with a third positioning portion for positioning said image transfer unit.
Claim 13
Dependent Claim
32 words
An apparatus according to claim 10, further comprising means for feeding the recording material, wherein said frame is further provided with a fourth positioning portion for positioning and supporting said feeding means.
Claim 14
Dependent Claim
50 words
An apparatus according to claim 8, wherein said process cartridge includes as the process means a charger for charging the photosensitive member, developing means for developing an image formed on the photosensitive member and cleaning means for cleaning the photosensitive member, wherein said second positioning portion positions those process means.
Claim 15
Dependent Claim
34 words
An apparatus according to claim 8, wherein said 1aser optical unit includes a emitting source, means for scanningly deflecting the laser beam produced by the laser source and a supporting member for supporting them.
Claim 16
Dependent Claim
26 words
An apparatus according to claim 8, wherein said laser optical unit is a beam deflecting unit for scanningly deflecting the laser beam directed thereto without deflection.
Claim 17
Dependent Claim
20 words
An apparatus according to claim 14, wherein the deflecting unit includes a rotational mirror and a driver for rotating it.
Claim 18
Dependent Claim
94 words
An electrographic apparatus, comprising: a photosensitive member; an optical unit for projecting onto said photosensitive member image information light formed in accordance with an electric signal; image transfer means for transferring the image from said photosensitive member onto a recording material; an integrally molded main frame for positioning and supporting said photosensitive member and said optical unit and said image transfer means; and image fixing means for fixing on the recording material the image transferred from said photosensitive member, said fixing means being positioned and supported on a frame separate from said main frame.
Claim 19
Dependent Claim
94 words
An electrographic apparatus, comprising: a photosensitive member; an optical unit for projecting onto said photosensitive member image information light formed in accordance with an electric signal; image transfer means for transferring the image from said photosensitive member onto a recording material; an integrally molded main frame for positioning and supporting said photosensitive member and said optical unit and said image transfer means; and image fixing means for fixing on the recording material the image transferred from said photosensitive member, said fixing means being positioned and supported on a frame separate from said main frame.
Claim 20
Dependent Claim
15 words
An apparatus according to claim 16, wherein said main frame is of injection-molded synthetic resin.
Claim 21
Dependent Claim
32 words
An apparatus according to claim 16, further comprising means for feeding the recording material, wherein said main frame is provided with a fourth positioning portion for positioning and supporting sid feeding means.
Claim 22
Dependent Claim
115 words
An electrographic apparatus to which a process cartridge is detachably mountable, the process cartridge including a photosensitive member and at least one process means actable on said photosensitive member, comprising: an optical unit for applying image information light formed in accordance with an electric signal onto said photosensitive member for forming an image thereon; image transfer means for transferring the image from said photosensitive member to a recording material; an integrally molded main frame for positioning and supporting the process cartridge, said optical unit and said transfer means; and image fixing means for fixing the image on the recording material, said fixing means being positioned and supported on a frame separate from said main frame.
Claim 23
Dependent Claim
115 words
An electrographic apparatus to which a process cartridge is detachably mountable, the process cartridge including a photosensitive member and at least one process means actable on said photosensitive member, comprising: an optical unit for applying image information light formed in accordance with an electric signal onto said photosensitive member for forming an image thereon; image transfer means for transferring the image from said photosensitive member to a recording material; an integrally molded main frame for positioning and supporting the process cartridge, said optical unit and said transfer means; and image fixing means for fixing the image on the recording material, said fixing means being positioned and supported on a frame separate from said main frame.
Claim 24
Dependent Claim
15 words
An apparatus according to claim 19, wherein said main frame is of injection-molded synthetic resin.
Claim 25
Dependent Claim
26 words
An apparatus according to claim 19, further comprising feeding means for feeding the recording material, wherein said main frame further positions and supports said feeding means.
Claim 26
Dependent Claim
20 words
An apparatus according to claim 19, wherein said main frame is provided with a portion for positioning the photosensitive member.
References Cited (Backward Citations)
US4417260A
Cited
US4598443A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-15 | 1992-05-16 | 1992-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-15 | 1996-05-16 | 1996-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-15 | 2000-05-16 | 2000-11-15 | $7700.00 | Window Closed / Lapsed |