Patent US3962136B1 successfully refreshed from Google Patents.
US4479149A
Expired / Lapsed
US
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Photo-electric converter and image forming apparatus incorporating the same
Assignee: Canon Inc
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Filing: 1980-06-17
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Granted: 1984-10-23
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Expires: 2000-06-17
Abstract
Abstract A photo-electric converter principally constructed with a photo-electric conversion unit wherein m×n photo-electric conversion elements, each having a light receiving window to form a pel and constructed with a layer of light receiving body and two electrodes provided on both sides thereof, are arranged two-dimensionally in an array of m ranks and n files, and wherein the light receiving windows of the photo-electric conversion elements constituting a rank are arranged at an equally spaced pitch of an integral multiple of that of pels. A signal processing circuit processes and produces as an output a signal which has been subjected to the photo-electric conversion in the photo-electric conversion unit.
Inventors
- 👤 Seishiro Yoshioka
- 👤 Yutaka Hirai
- 👤 Tadaji Fukuda
- 👤 Masaki Fukaya
- 👤 Takashi Nakagiri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:23
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/04; H04N1/19; H04N1/195; H04N1/19505; H04N1/1951; H04N1/19521; H04N1/19526; H04N1/19531; H04N1/19552; H04N1/19563; H04N1/19584; H10; H10F; H10F39/00; H10F39/10; H10F39/12; H10F39/191
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
187 words
A photo-electric converter, comprising: (a) photo-electric conversion means comprising m×n photo-electric conversion elements, each element being constructed with a layer of light receiving material and two electrodes and having a light receiving window which defines a pel, said elements being arranged two-dimensionally in an array of m ranks and n files, wherein the light receiving windows of said photo-electric conversion elements constituting a rank are arranged at a pitch of an integral number s of pels and the light receiving windows of said photo-electric conversion elements constituting a file are arranged at a pitch of an integral number t of pels; (b) means for stepwise reading an original image at a resolution of s×n pels in the horizontal direction and t×m pels in the vertical direction and for forming s×t partial images on said m×n photo-electric conversion elements by performing original image reading at s steps of one pel in the horizontal direction and at t steps of one pel in the vertical direction; and (c) signal processing circuitry to process the s×t partial images which have been subjected to photoelectric conversion in said photo-electric conversion means.
Claim 2
Dependent Claim
187 words
A photo-electric converter, comprising: (a) photo-electric conversion means comprising m×n photo-electric conversion elements, each element being constructed with a layer of light receiving material and two electrodes and having a light receiving window which defines a pel, said elements being arranged two-dimensionally in an array of m ranks and n files, wherein the light receiving windows of said photo-electric conversion elements constituting a rank are arranged at a pitch of an integral number s of pels and the light receiving windows of said photo-electric conversion elements constituting a file are arranged at a pitch of an integral number t of pels; (b) means for stepwise reading an original image at a resolution of s×n pels in the horizontal direction and t×m pels in the vertical direction and for forming s×t partial images on said m×n photo-electric conversion elements by performing original image reading at s steps of one pel in the horizontal direction and at t steps of one pel in the vertical direction; and (c) signal processing circuitry to process the s×t partial images which have been subjected to photoelectric conversion in said photo-electric conversion means.
Claim 3
Dependent Claim
36 words
The photo-electric converter as set forth in claim 1, wherein said light receiving body layer forms a hetero-junction with one of said electrodes at a light incidence side, and an ohmic contact with the other electrode.
Claim 4
Dependent Claim
34 words
The photo-electric converter as set forth in claim 1, wherein said light receiving body layer is constructed with a photo-conductive material selected from a group consisting of hydrogenated amorphous silicon, Se, SeTe, and PbO.
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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) | 1987-10-23 | 1988-04-23 | 1988-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-23 | 1992-04-23 | 1992-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-23 | 1996-04-23 | 1996-10-23 | $7700.00 | Window Closed / Lapsed |