US5261013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectric converter and image reading apparatus mounting the same
Assignee: Canon Inc
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Filing: 1992-03-03
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Granted: 1993-11-09
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Expires: 2012-03-03
Abstract
Abstract A photoelectric converter includes a transparent substrate having a photoelectric converting element provided on a surface opposing a document relating to reading of image information, a transparent support for supporting the substrate, and a light source provided on a surface of the support opposite to a supporting surface for the substrate. Light emitted from the light source is radiated on a document through the support and the substrate, and reflected light is received by the photoelectric converting element.
Inventors
- 👤 Masayoshi Murata
- 👤 Katsumi Komiyama
- 👤 Tatsundo Kawai
- 👤 Makoto Ogura
- 👤 Hiroo Ichihashi
- 👤 Osamu Hamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:15
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/024; H04N1/028; H04N1/02815; H04N1/02845; H04N1/03; H04N1/031; H10; H10F; H10F77/00; H10F77/30; H10F77/306; H10F77/331; H10F77/334
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
173 words
A photoelectric converter comprising: a) a first substrate which is insulative and transparent and which has a first surface and a second surface; b) a second substrate which is larger than said first substrate and which is insulative and transparent, said second substrate being provided on said second surface of said first substrate; c) a photoelectric converting element provided on said first surface of said first substrate; d) a light source for emitting illumination light through said first and second substrates toward an original, the illumination light being reflected from a surface of the original such that the reflected light is incident on said photoelectric converting element; e) a first light-shielding member provided between a photoelectric converting portion of said photoelectric converting element and said first surface of second substrate; and f) a second light-shielding member provided between said second surface of said first substrate and said second substrate, wherein said first and second light-shielding members prevent the illumination light from directly impinging on said photoelectric converting portion of said photoelectric converting element.
Claim 2
Dependent Claim
173 words
A photoelectric converter comprising: a) a first substrate which is insulative and transparent and which has a first surface and a second surface; b) a second substrate which is larger than said first substrate and which is insulative and transparent, said second substrate being provided on said second surface of said first substrate; c) a photoelectric converting element provided on said first surface of said first substrate; d) a light source for emitting illumination light through said first and second substrates toward an original, the illumination light being reflected from a surface of the original such that the reflected light is incident on said photoelectric converting element; e) a first light-shielding member provided between a photoelectric converting portion of said photoelectric converting element and said first surface of second substrate; and f) a second light-shielding member provided between said second surface of said first substrate and said second substrate, wherein said first and second light-shielding members prevent the illumination light from directly impinging on said photoelectric converting portion of said photoelectric converting element.
Claim 3
Dependent Claim
21 words
A photoelectric converter according to claim 1, wherein said photoelectric converting element includes a charge stored section and a switching transistor.
Claim 4
Dependent Claim
34 words
A photoelectric converter according to claim 1, wherein said photoelectric converting portion includes an amorphous silicon layer provided on said first light-shielding member and spaced from said first light-shielding member by an insulating layer.
Claim 5
Dependent Claim
20 words
A photoelectric converter according to claim 1, wherein said second light-shielding member comprises a conductor maintained at a constant potential.
Claim 6
Dependent Claim
21 words
A photoelectric converter according to claim 1, further comprising a support member for holding said second substrate and said light source.
Claim 7
Dependent Claim
27 words
A photoelectric converter according to claim 1, wherein said second substrate is provided with a semiconductor integrated circuit which is electrically connected to said photoelectric converting element.
Claim 8
Dependent Claim
23 words
An image reading apparatus mounting a photoelectric converter according to claim 1, further comprising control means for controlling driving of said photoelectric converter.
Claim 9
Dependent Claim
17 words
An image reading apparatus with a recording function according to claim 7, further comprising a recording head.
Claim 10
Dependent Claim
21 words
An image reading apparatus with a recording function according to claim 8, wherein said recording head is an ink-jet recording head.
Claim 11
Dependent Claim
20 words
An apparatus with a recording function according to claim 9, wherein said recording head ejects an ink by using heat.
Claim 12
Dependent Claim
27 words
A photoelectric converter according to claim 5, wherein said second substrate is provided with a semiconductor integrated circuit which is electrically connected to said photoelectric converting element.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-11-08 | 1997-05-10 | 1997-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-08 | 2001-05-10 | 2001-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-08 | 2005-05-10 | 2005-11-09 | $7700.00 | Window Closed / Lapsed |