Patent US6151057A successfully refreshed from Google Patents.
US6151057A
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Optically controlled image forming apparatus and method
Assignee: Ricoh Co Ltd
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Filing: 1996-10-28
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Granted: 2000-11-21
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Expires: 2016-10-28
Abstract
Abstract An image forming apparatus and method that provides a laser beam oscillator that provides a laser beam corresponding to an original image, reflects/scans the laser beam, transmits a first part of said laser beam to a photoconductive element to write thereupon an image indicative of the original image, accepts a second part of the laser beam as to control and synchronize a write timing sequence of the laser beam on the image carrying element.
Inventors
- 👤 Kouzou Yamazaki
- 👤 Hideaki Mochimaru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:44
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/04; H04N1/047; B; B41; B41J; B41J2/00; B41J2/435; B41J2/47; B41J2/471; H04N1/113; H04N1/1135; H04N1/12; H04N2201/00; H04N2201/04; H04N2201/047; H04N2201/04701; H04N2201/0471; H04N2201/04744; H04N2201/04753; H04N2201/04758; H04N2201/04767
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
192 words
An image forming apparatus comprising: a laser oscillator that generates a laser beam according to an original image signal corresponding to an original image; means for reflecting/scanning the laser beam from said laser oscillator; means for transmitting, including at least one lens, a first part of said laser beam after being reflected/scanned by said reflecting/scanning means towards an image carrying element to write thereupon an image indicative of the original image; light accepting means for accepting a second part of the laser beam, after the second part of the laser beam is deflected off a portion of said at least one lens of said means for transmitting, and for generating a synchronization signal so as to synchronize a write timing sequence of the laser beam on the image carrying element; and a control structure on which said laser light accepting means is directly mounted in a predetermined posture, said control structure including an engine driver control and being configured to control an optical writing operation of said image forming apparatus based on said synchronization signal, and said at least one lens of said means for transmitting formed separated from said control structure.
Claim 2
Dependent Claim
192 words
An image forming apparatus comprising: a laser oscillator that generates a laser beam according to an original image signal corresponding to an original image; means for reflecting/scanning the laser beam from said laser oscillator; means for transmitting, including at least one lens, a first part of said laser beam after being reflected/scanned by said reflecting/scanning means towards an image carrying element to write thereupon an image indicative of the original image; light accepting means for accepting a second part of the laser beam, after the second part of the laser beam is deflected off a portion of said at least one lens of said means for transmitting, and for generating a synchronization signal so as to synchronize a write timing sequence of the laser beam on the image carrying element; and a control structure on which said laser light accepting means is directly mounted in a predetermined posture, said control structure including an engine driver control and being configured to control an optical writing operation of said image forming apparatus based on said synchronization signal, and said at least one lens of said means for transmitting formed separated from said control structure.
Claim 3
Dependent Claim
37 words
An image forming apparatus according to claim 1, wherein said control structure comprises a control board disposed so as to guide a stream of gas from an internal space of the apparatus to outside of the apparatus.
Claim 4
Dependent Claim
40 words
The image forming apparatus of claim 1, further comprising rotatable cover means for covering the image forming apparatus during an operational mode of operation and for uncovering internal components of said image forming apparatus during a maintenance mode of operation.
Claim 5
Dependent Claim
37 words
An image forming apparatus according to claim 1, wherein said at least one lens of said means for transmitting includes a reflective means for reflecting the second part of the laser beam to said light accepting means.
Claim 6
Dependent Claim
178 words
An image forming apparatus comprising: a laser oscillator that generates a laser beam corresponding to an original image; a reflector/scanner that reflects/scans the laser beam generated by said laser oscillator; a transmitter, including at least one lens, which transfers a first part of the reflected/scanned laser beam by said reflector/scanner towards an image carrying element to write thereupon an image corresponding to the original image; a light acceptor configured to generate a synchronization signal in response to accepting a second part of the laser beam after the second part of the laser beam is deflected off a portion of said at least one lens of said transmitter; and a control structure including an engine driver control and which controls an optical writing operation of said image forming apparatus based on said synchronization signal so as to synchronize a write timing sequence of the reflected/scanned layer beam on the image carrying element, said light acceptor directly mounted in a predetermined posture on said control structure, said at least one lens of said transmitter formed separated from said control structure.
Claim 7
Dependent Claim
178 words
An image forming apparatus comprising: a laser oscillator that generates a laser beam corresponding to an original image; a reflector/scanner that reflects/scans the laser beam generated by said laser oscillator; a transmitter, including at least one lens, which transfers a first part of the reflected/scanned laser beam by said reflector/scanner towards an image carrying element to write thereupon an image corresponding to the original image; a light acceptor configured to generate a synchronization signal in response to accepting a second part of the laser beam after the second part of the laser beam is deflected off a portion of said at least one lens of said transmitter; and a control structure including an engine driver control and which controls an optical writing operation of said image forming apparatus based on said synchronization signal so as to synchronize a write timing sequence of the reflected/scanned layer beam on the image carrying element, said light acceptor directly mounted in a predetermined posture on said control structure, said at least one lens of said transmitter formed separated from said control structure.
Claim 8
Dependent Claim
40 words
The image forming apparatus according to claim 5, wherein said reflector/scanner is configured to simultaneously reflect/scan the first part of said laser beam toward said image carrying element, and the second part of said laser beam to said light acceptor.
Claim 9
Dependent Claim
35 words
The image forming apparatus according to claim 6, wherein said at least one lens of said transmitter comprises a deviation formed thereon which directs said second part of said laser beam toward said light acceptor.
Claim 10
Dependent Claim
36 words
The image forming apparatus of claim 7, wherein said control structure comprises a control board disposed so as to guide a stream of gas from an internal space of the apparatus to outside of the apparatus.
Claim 11
Dependent Claim
27 words
The image forming apparatus of claim 8, further comprising a fan configured to draw said stream of gas from said internal space to outside of the apparatus.
Claim 12
Dependent Claim
123 words
The image forming apparatus of claim 5, further comprising: a first case rotatably attached to a first side of said image forming apparatus; and a second case rotatably attached to a second side of said image forming apparatus, wherein during an operational mode of operation, said first case and said second case being in a closed position so as to cover at least one of said laser oscillator, said reflector/scanner, said transmitter, said light acceptor and said controller and during a maintenance mode of operation said first case and said second case being rotated to respective open positions so as to uncover at least one of said laser oscillator, said reflector/scanner, said transmitter, said light acceptor and said controller for ease of maintenance.
Claim 13
Independent Claim
144 words
A method for optically controlling an image forming apparatus, comprising the steps of: generating a laser beam; oscillating the laser beam according to an original image signal corresponding to an original image; reflecting the laser beam; transmitting the reflected laser beam towards an image carrying element through at least one lens; writing an image on said image carrying element with a first portion of said reflected laser beam; transducing a second portion of said reflected laser beam, after the second portion of said reflected laser beam is deflected off a portion of the at least one lens, to provide a control signal with a light sensor directly mounted to a control structure including an engine driver control structure, the at least one lens formed separated from the control structure; and controlling with the control structure an optical write operation based on said control signal.
Claim 14
Independent Claim
144 words
A method for optically controlling an image forming apparatus, comprising the steps of: generating a laser beam; oscillating the laser beam according to an original image signal corresponding to an original image; reflecting the laser beam; transmitting the reflected laser beam towards an image carrying element through at least one lens; writing an image on said image carrying element with a first portion of said reflected laser beam; transducing a second portion of said reflected laser beam, after the second portion of said reflected laser beam is deflected off a portion of the at least one lens, to provide a control signal with a light sensor directly mounted to a control structure including an engine driver control structure, the at least one lens formed separated from the control structure; and controlling with the control structure an optical write operation based on said control signal.
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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) | 2003-11-21 | 2004-05-22 | 2004-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-11-21 | 2008-05-22 | 2008-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-11-21 | 2012-05-22 | 2012-11-21 | $7700.00 | Window Closed / Lapsed |