Patent US3207262A successfully refreshed from Google Patents.
Patent US5930002A successfully refreshed from Google Patents.
US5930002A
Expired / Lapsed
US
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Image forming apparatus having a single-body image forming drum unit
Assignee: Konica Minolta Inc
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Filing: 1997-05-13
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Granted: 1999-07-27
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Expires: 2017-05-13
Abstract
Abstract An image forming apparatus comprises a photoreceptor drum, a supporting member provided inside the photoreceptor drum and supporting plural exposure devices; and a signal passage to transmit an image signal to the plural exposure devices. The signal passage connects the outside and the inside of the photoreceptor drum by passing a part of the supporting member.
Inventors
- 👤 Satoshi Haneda
- 👤 Hisayoshi Nagase
- 👤 Hiroyuki Tokimatsu
- 👤 Masahiro Onodera
- 👤 Shuta Hamada
- 👤 Toshihide Miura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:23
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/75; G03G15/751; G03G15/04; G03G15/04036; G03G15/04081; G03G15/22; G03G15/32; G03G15/326; G03G2215/00; G03G2215/01; G03G2215/0167; G03G2215/0174; G03G2215/018
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
168 words
An image forming drum unit adapted for mounting on or dismounting from an image forming apparatus as a single unit, comprising: (1) an image forming drum having an outer surface comprising a photoconductive layer and an inner space; (2) an exposing unit provided in said inner space of said image forming drum and comprising: (a) plural exposing members to conduct image exposure in said inner space, (b) a supporting member on which said plural exposing members are mounted; (c) two sets of bearings for rotatably supporting said image forming drum, wherein said two sets of bearings are mounted on said supporting member and said plural exposing members are placed between said two sets of bearings; and (d) a signal passage for transmission of image signals to said plural exposing members to form an image, said signal passage passing through a part of said supporting member whereby said image signals are supplied through said signal passage from outside of said image forming drum unit to said plural exposing members.
Claim 2
Dependent Claim
168 words
An image forming drum unit adapted for mounting on or dismounting from an image forming apparatus as a single unit, comprising: (1) an image forming drum having an outer surface comprising a photoconductive layer and an inner space; (2) an exposing unit provided in said inner space of said image forming drum and comprising: (a) plural exposing members to conduct image exposure in said inner space, (b) a supporting member on which said plural exposing members are mounted; (c) two sets of bearings for rotatably supporting said image forming drum, wherein said two sets of bearings are mounted on said supporting member and said plural exposing members are placed between said two sets of bearings; and (d) a signal passage for transmission of image signals to said plural exposing members to form an image, said signal passage passing through a part of said supporting member whereby said image signals are supplied through said signal passage from outside of said image forming drum unit to said plural exposing members.
Claim 3
Dependent Claim
53 words
The image forming drum unit of claim 1 wherein said supporting member is provided with a uniform exposure means for conducting uniform exposure of said image forming drum when a toner image is transferred from said image forming drum, and said signal passage comprises a lead wire connected to said uniform exposure means.
Claim 4
Dependent Claim
40 words
The image forming drum unit of claim 1 wherein said supporting member is provided with a light detecting sensor for conducting toner concentration correction or γ-correction, and said signal passage comprises a lead wire connected to said light detecting sensor.
Claim 5
Dependent Claim
16 words
The image forming drum unit of claim 1 wherein said signal passage comprises a lead wire.
Claim 6
Dependent Claim
25 words
The image forming drum unit of claim 4 wherein said supporting member is provided with a relay connector forming a part of said signal passage.
Claim 7
Dependent Claim
46 words
The image forming drum unit of claim 1 wherein said supporting member is provided with a memory member for memorizing positional registration information among said image forming drum and said plural exposing means, and said signal passage comprises a lead wire connected to said memory member.
Claim 8
Dependent Claim
38 words
The image forming drum unit of claim 6 wherein said positional registration information is read out from said memory member through said signal passage and said image signal is transmitted based on said read out positional registration information.
Claim 9
Dependent Claim
43 words
The image forming drum unit of claim 1 wherein said supporting member comprises two disk plates and a bar fixed therebetween, said plural exposing members are mounted on said bar and said two sets of bearings are mounted on said two disk plates.
Claim 10
Dependent Claim
28 words
The image forming drum unit of claim 8 wherein one of said two disk plates is provided with a hole and said signal passage passes through said hole.
Claim 11
Dependent Claim
55 words
The image forming drum unit of claim 9 wherein said image forming drum has a first end and a second end, said second end forming a driven section through which said image forming drum is rotated, and wherein one of said two disk plates is located at said second end of said image forming drum.
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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) | 2002-07-26 | 2003-01-25 | 2003-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-07-26 | 2007-01-25 | 2007-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-07-26 | 2011-01-25 | 2011-07-27 | $7700.00 | Window Closed / Lapsed |