US4386841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image-forming device having a photosensitive member
Assignee: Toshiba Corp
•
Filing: 1981-10-16
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Granted: 1983-06-07
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Expires: 2001-10-16
Abstract
Abstract A clam-shell type image-forming device such as photocopying or facsimile machine has an upper unit and a lower unit hinged to each other at one side. Access to internal parts, such as the photosensitive member, is gained by unlocking the two units from each other and rotating the upper unit upward. A subframe is included within the upper unit and contains the photosensitive member. When the upper unit is opened, the subframe may be lowered to position the photosensitive member for easy inspection and removal.
Inventors
- 👤 Nobutaka Wakao
- 👤 Reiji Murakami
- 👤 Katsuhiko Okamoto
- 👤 Kohachi Uchida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:13
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/16; G03G21/18; G03G21/1803; G03G21/1817; G03G21/1821; G03G21/1604; G03G21/1623; G03G21/1628; G03G21/1642; G03G21/1647; G03G21/1661; G03G21/1671; G03G2221/00; G03G2221/16; G03G2221/1606; G03G2221/1651; G03G2221/1654; G03G2221/1678; G03G2221/1684; G03G2221/1687; G03G2221/18; G03G2221/183
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
96 words
An image-forming device comprising: a. a casing including a lower unit and an upper unit, said upper unit being movable upward and away from said lower unit to obtain access to the interior of said casing; b. a photosensitive member positioned in said upper unit; and c. a subframe attached to said upper unit to support said photosensitive member when said upper unit is moved upward and away from said lower unit, said subframe being movable downward from said upper unit to position said photosensitive member at an open space between said upper and lower units.
Claim 2
Dependent Claim
96 words
An image-forming device comprising: a. a casing including a lower unit and an upper unit, said upper unit being movable upward and away from said lower unit to obtain access to the interior of said casing; b. a photosensitive member positioned in said upper unit; and c. a subframe attached to said upper unit to support said photosensitive member when said upper unit is moved upward and away from said lower unit, said subframe being movable downward from said upper unit to position said photosensitive member at an open space between said upper and lower units.
Claim 3
Dependent Claim
18 words
An image-forming device as claimed in claim 1, wherein said subframe is rotatably attached to said upper unit.
Claim 4
Dependent Claim
61 words
An image-forming device as claimed in claim 1, further comprising driving means for driving said photosensitive member, said subframe being separate from said photosensitive member when said driving means is driving said photosensitive member, and further comprising release means coupled to said driving means for releasing said photosensitive member from said driving means to position said photosensitive member on said subframe.
Claim 5
Dependent Claim
28 words
An image-forming device as claimed in claim 3, wherein said subframe includes a receiving notch in which said photosensitive member rests when it is positioned on said subframe.
Claim 6
Dependent Claim
51 words
An image-forming device as claimed in claim 1, further comprising driving means for driving said photosensitive member, said subframe supporting said photosensitive member when said driving means is driving said photosensitive member, and further comprising release means coupled to said driving means for releasing said photosensitive member from said driving means.
Claim 7
Dependent Claim
29 words
An image-forming device as claimed in claim 3 or claim 5, wherein said release means comprises a docking shaft movable along its longitudinal axis to perform said releasing function.
Claim 8
Dependent Claim
42 words
An image-forming device as claimed in claim 1, further comprising a developing unit positioned in said upper unit, said subframe supporting both said photosensitive member and said developing unit when said upper unit is moved upward and away from said lower unit.
Claim 9
Dependent Claim
36 words
An image-forming device as claimed in claim 7, further comprising a cleaning unit positioned in said upper unit and supported by said subframe when said upper unit is moved upward and away from said lower unit.
References Cited (Backward Citations)
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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) | 1986-06-06 | 1986-12-06 | 1987-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-06 | 1990-12-06 | 1991-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-06 | 1994-12-06 | 1995-06-07 | $7700.00 | Window Closed / Lapsed |