US4446364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectric converter on a transmissive substrate having light shielding
Assignee: Hitachi Ltd
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Filing: 1981-03-25
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Granted: 1984-05-01
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Expires: 2001-03-25
Abstract
Abstract In a contact type photoelectric converter device suited for use in facsimile transmitters and character readers, a light transmitting section for transmitting light emitted from a light source is juxtaposed in the vicinity of a row of photoconductive film so that the surface of an original is uniformly illuminated and a major portion of reflected light rays from the original impinges on the photoconductive films thereby improving an efficiency of light utilization.
Inventors
- 👤 Seiichi Hayashi
- 👤 Eiichi Hara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:32
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/024; H04N1/028; H04N1/03; H04N1/031; G; G06; G06V; G06V10/00; G06V10/10; G06V10/12; H10; H10F; H10F39/00; H10F39/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
272 words
A photoelectric converter device comprising: a light transmissive substrate; an elongated stripe-like light intercepting film formed on one surface of said light transmissive substrate; a light source disposed on an opposite side of said light transmissive substrate relative to said light intercepting film; a group of separated first electrodes, each of said first electrodes extending across the light intercepting film in a manner covering more than half of said light intercepting film in the width direction thereof and continuing from a longitudinally extending edge of said light intercepting film in a direction away from said light intercepting film; separated photoconductive films of a semiconductor material provided corresponding in number to said first electrodes, each of said photoconductive films being formed on a peripheral portion of a respective one of the first electrodes which covers said light intercepting film; a second electrode of a light transmissive material formed at the other widthwise side of said light intercepting film in a manner so as to commonly cover said photoconductive films and so as to extend outwardly from said other side of said light intercepting film; and a light transmissive protection film, of a type suitable for contacting an information carrying surface in use, formed on said first and second electrodes so as to cover them; whereby, in use, light from said light source will reach an information carrying surface disposed in contact with said light transmissive substrate through said light transmissive substrate, said second electrode and said light transmissive protection film, and light reflected from said information carrying surface will reach said photoconductive films through said light transmissive protection film and said second electrode.
Claim 2
Dependent Claim
272 words
A photoelectric converter device comprising: a light transmissive substrate; an elongated stripe-like light intercepting film formed on one surface of said light transmissive substrate; a light source disposed on an opposite side of said light transmissive substrate relative to said light intercepting film; a group of separated first electrodes, each of said first electrodes extending across the light intercepting film in a manner covering more than half of said light intercepting film in the width direction thereof and continuing from a longitudinally extending edge of said light intercepting film in a direction away from said light intercepting film; separated photoconductive films of a semiconductor material provided corresponding in number to said first electrodes, each of said photoconductive films being formed on a peripheral portion of a respective one of the first electrodes which covers said light intercepting film; a second electrode of a light transmissive material formed at the other widthwise side of said light intercepting film in a manner so as to commonly cover said photoconductive films and so as to extend outwardly from said other side of said light intercepting film; and a light transmissive protection film, of a type suitable for contacting an information carrying surface in use, formed on said first and second electrodes so as to cover them; whereby, in use, light from said light source will reach an information carrying surface disposed in contact with said light transmissive substrate through said light transmissive substrate, said second electrode and said light transmissive protection film, and light reflected from said information carrying surface will reach said photoconductive films through said light transmissive protection film and said second electrode.
Claim 3
Dependent Claim
222 words
A photoelectric converter device comprising: a light transmissive substrate; an elongated strip-like opaque common electrode formed on one surface of said light transmissive substrate; a light source disposed on an opposite side of said light transmissive substrate relative to said opaque common electrode; a plurality of separated photoconductive films, each of said photoconductive films extending across the opaque common electrode, in the width direction, to a longitudinally extending edge thereof in a manner such that more than half of each photoconductive film lies covering said opaque common electrode; a group of light transmissive electrodes corresponding in number to said photoconductive films, each of said light transmissive electrodes extending in a manner covering a respective one of the photoconductive films and continuing therebeyond in a direction away from said opaque common electrode; and a light transmissive protection film, of a type adapted to contact an information carrying surface in use, formed on said opaque common electrode and said light transmissive electrodes; whereby, in use, light from said light source will reach an information carrying surface disposed in contact with said light transmissive protective film through said light transmissive substrate, said light transmissive electrodes and said light transmissive protection film, and light reflected from said information carrying surface will reach said photoconductive films through said light transmissive protection film and said light transmissive electrodes.
Claim 4
Dependent Claim
222 words
A photoelectric converter device comprising: a light transmissive substrate; an elongated strip-like opaque common electrode formed on one surface of said light transmissive substrate; a light source disposed on an opposite side of said light transmissive substrate relative to said opaque common electrode; a plurality of separated photoconductive films, each of said photoconductive films extending across the opaque common electrode, in the width direction, to a longitudinally extending edge thereof in a manner such that more than half of each photoconductive film lies covering said opaque common electrode; a group of light transmissive electrodes corresponding in number to said photoconductive films, each of said light transmissive electrodes extending in a manner covering a respective one of the photoconductive films and continuing therebeyond in a direction away from said opaque common electrode; and a light transmissive protection film, of a type adapted to contact an information carrying surface in use, formed on said opaque common electrode and said light transmissive electrodes; whereby, in use, light from said light source will reach an information carrying surface disposed in contact with said light transmissive protective film through said light transmissive substrate, said light transmissive electrodes and said light transmissive protection film, and light reflected from said information carrying surface will reach said photoconductive films through said light transmissive protection film and said light transmissive electrodes.
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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) | 1987-05-01 | 1987-10-31 | 1988-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-01 | 1991-10-31 | 1992-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-01 | 1995-10-31 | 1996-05-01 | $7700.00 | Window Closed / Lapsed |