US4839730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image reading apparatus
Assignee: Sharp Corp
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Filing: 1987-05-19
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Granted: 1989-06-13
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Expires: 2007-05-19
Abstract
Abstract An image reading apparatus in which an optical system is formed into a unit to make the entire construction compact and facilitate positioning of each component. The optical unit comprises a block structure provided with mounts for supporting a light source base, a lens and a sensor base, respectively. An array of light emitting elements is arranged as a light source on the light source base, and da CCD image sensor is arranged on the sensor base. An end of the lens is positioned at the document reading zone and the other end of the lens is positioned adjacent the sensor base.
Inventors
- 👤 Hiroshi Shirakoshi
- 👤 Matahira Kotani
- 👤 Masafumi Matsumoto
- 👤 Hiroshi Morimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:57
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/024; H04N1/028; H04N1/03; H04N1/031
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
147 words
An image reading apparatus for reading information from a document, comprising: an elongated optical system mounting member having an elongated slot, and an elongated groove inclined at a predetermined angle adjacent said slot; a light source base and an LED light source array mounted on said base, said base and LED array being set into said elongated groove; an elongated lens set into said elongated slot; an image sensor base and an image sensor mounted on said image sensor base, located below said slot to contact one end of said elongated lens; a transparent cover mounted on a top surface of said mounting member to contact another end of said elongated lens; and transport means for transporting said document over said cover to be irradiated by said LED light source array; light reflected from said document passing through said lens and being sensed by said image sensor.
Claim 2
Dependent Claim
147 words
An image reading apparatus for reading information from a document, comprising: an elongated optical system mounting member having an elongated slot, and an elongated groove inclined at a predetermined angle adjacent said slot; a light source base and an LED light source array mounted on said base, said base and LED array being set into said elongated groove; an elongated lens set into said elongated slot; an image sensor base and an image sensor mounted on said image sensor base, located below said slot to contact one end of said elongated lens; a transparent cover mounted on a top surface of said mounting member to contact another end of said elongated lens; and transport means for transporting said document over said cover to be irradiated by said LED light source array; light reflected from said document passing through said lens and being sensed by said image sensor.
Claim 3
Dependent Claim
28 words
The image reading apparatus of claim 1, wherein said elongated mounting member includes a pair of steps in said top surface into which said transparent cover is mounted.
Claim 4
Dependent Claim
15 words
The image reading apparatus of claim 1, wherein said transparent cover is made of glass.
Claim 5
Dependent Claim
16 words
The image reading apparatus of claim 1, wherein said image sensor comprises a charge-coupled device (CCD).
Claim 6
Dependent Claim
61 words
The image reading apparatus of claim 1, further comprising a pair of leaf springs attached to said elongated mounted member; said transport means including a roller facing said transparent cover, said document being transported between said roller and said transparent cover; said leaf springs causing said cover to be biased against said roller to press said document against said transparent cover.
References Cited (Backward Citations)
GB1471382A
Cited
EP0068860A2
Cited
US4471384A
Cited
EP0177461A2
Cited
EP0183980A2
Cited
GB2169467A
Cited
EP0199454A2
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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) | 1992-06-12 | 1992-12-12 | 1993-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-12 | 1996-12-12 | 1997-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-12 | 2000-12-12 | 2001-06-13 | $7700.00 | Window Closed / Lapsed |