US4975787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet conveying and reading apparatus
Assignee: Canon Inc
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Filing: 1988-06-28
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Granted: 1990-12-04
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Expires: 2008-06-28
Abstract
Abstract An image reading apparatus has conveying means for conveying a sheet, a transparent member for intimately contacting the sheet conveyed by the conveying means, a photoelectric conversion element provided on or in proximity to the transparent member for reading an image formed on the sheet conveyed by the conveying means, support means for supporting the conveying means, and positioning means provided on the support means for positioning the photoelectric conversion element relative to the conveying means.
Inventors
- 👤 Kazuya Ijuin
- 👤 Shinnichiro Otsuki
- 👤 Yuji Nakano
- 👤 Hiroshi Ogushi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:26
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/00567; H04N1/0057; H04N1/00588; H04N1/00599; H04N1/00602; H04N1/00628; H04N1/024; H04N1/028; H04N1/03; H04N1/031; H04N1/0313; H04N1/0315; H04N1/0316
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
129 words
An image reading apparatus comprising: conveying means for conveying sheets; a transparent member contacting the sheets conveyed by said conveying means; a photoelectric conversion element provided in proximity with said transparent member, for reading an image formed on the sheets conveyed by said conveying means; support means for supporting said conveying means; positioning means provided on said support means for positioning said photoelectric conversion element relative to said conveying means, said positioning means having a fiducial surface formed parallel to a rotary axis of said conveying means; a holding member for holding said transparent member and said photoelectric conversion element, said holding member including a second fiducial surface bearing against said fiducial surface; and resilient means for biasing said second fiducial surface in a direction against said fiducial surface.
Claim 2
Dependent Claim
129 words
An image reading apparatus comprising: conveying means for conveying sheets; a transparent member contacting the sheets conveyed by said conveying means; a photoelectric conversion element provided in proximity with said transparent member, for reading an image formed on the sheets conveyed by said conveying means; support means for supporting said conveying means; positioning means provided on said support means for positioning said photoelectric conversion element relative to said conveying means, said positioning means having a fiducial surface formed parallel to a rotary axis of said conveying means; a holding member for holding said transparent member and said photoelectric conversion element, said holding member including a second fiducial surface bearing against said fiducial surface; and resilient means for biasing said second fiducial surface in a direction against said fiducial surface.
Claim 3
Dependent Claim
25 words
An image reading apparatus according to claim 1, further having second resilient means for biasing said holding member in a direction toward said conveying roller.
Claim 4
Dependent Claim
120 words
An image reading apparatus having: a rotational member for conveying a sheet; a photoelectric conversion element for reading an image formed on the sheet conveyed by said rotational member; a light-transmitting protective member covering said photoelectric conversion element; a base plate, lateral movement and pivotal movement of which are permitted within a predetermined range for holding said photoelectric conversion element and said light-transmitting protective member; support means for supporting said rotational member; positioning means provided on said support means for positioning said base plate relative to said rotational member; first biasing means for biasing said base plate toward said positioning means; second biasing means for biasing said base plate so that said protective member is urged against said rotational member.
Claim 5
Dependent Claim
120 words
An image reading apparatus having: a rotational member for conveying a sheet; a photoelectric conversion element for reading an image formed on the sheet conveyed by said rotational member; a light-transmitting protective member covering said photoelectric conversion element; a base plate, lateral movement and pivotal movement of which are permitted within a predetermined range for holding said photoelectric conversion element and said light-transmitting protective member; support means for supporting said rotational member; positioning means provided on said support means for positioning said base plate relative to said rotational member; first biasing means for biasing said base plate toward said positioning means; second biasing means for biasing said base plate so that said protective member is urged against said rotational member.
Claim 6
Dependent Claim
31 words
An image reading apparatus according to claim 3, wherein said first biasing means includes a spring member for imparting a biasing force to a plurality of regions of said base plate.
Claim 7
Dependent Claim
32 words
An image reading apparatus according to claim 4, wherein said second biasing means includes a second spring member for imparting a biasing force to a plurality of regions of said base plate.
Claim 8
Dependent Claim
42 words
An image reading apparatus according to claim 4, further having a transparent plate on the side opposite to that side of said protective member contacting said rotational member, and illuminating means for illuminating the surface of said sheet through said transparent plate.
Claim 9
Dependent Claim
36 words
An image reading apparatus according to claim 3, wherein said positioning means positions said base plate so that said photoelectric conversion element is positioned at a location corresponding to the base line of said rotational member.
Claim 10
Dependent Claim
27 words
An image reading apparatus according to claim 7, wherein said positioning means includes a fiducial surface for bearing against said base plate and positioning said base plate.
Claim 11
Dependent Claim
17 words
An image reading apparatus according to claim 3, wherein said protective member includes a transparent planar member.
Claim 12
Dependent Claim
20 words
An image reading apparatus according to claim 9, wherein said photoelectric conversion element is in contact with said planar member.
Claim 13
Dependent Claim
19 words
An image reading apparatus according to claim 9, wherein said photoelectric conversion element is embedded into said planar member.
Claim 14
Dependent Claim
89 words
A reading apparatus, including: conveying means for conveying sheets; guiding means for guiding the sheets to be in contact with said conveying means; reading means for reading images formed on the sheets conveyed by said conveying means; supporting means for supporting said conveying means; holding means for holding said reading means; a first reference surface formed on said supporting means: a second reference surface formed on said holding means to contact with said first reference surfaces to thereby position said reading means to be opposed to said conveying means.
Claim 15
Dependent Claim
89 words
A reading apparatus, including: conveying means for conveying sheets; guiding means for guiding the sheets to be in contact with said conveying means; reading means for reading images formed on the sheets conveyed by said conveying means; supporting means for supporting said conveying means; holding means for holding said reading means; a first reference surface formed on said supporting means: a second reference surface formed on said holding means to contact with said first reference surfaces to thereby position said reading means to be opposed to said conveying means.
Claim 16
Dependent Claim
23 words
A reading apparatus according to claim 12, wherein said guiding means has a transparent member holding the sheet conveyed by said conveying means.
Claim 17
Dependent Claim
24 words
A reading apparatus according to claim 13, wherein said reading means has a photoelectric converting element disposed on or adjacent to said transparent member.
Claim 18
Dependent Claim
22 words
A reading apparatus according to claim 14, wherein said conveying means has a rotary member rotating while in contact with a sheet.
Claim 19
Dependent Claim
23 words
A reading apparatus according to claim 15, wherein a rotational axis of said rotary member is disposed parallel to said first reference surface.
Claim 20
Dependent Claim
20 words
A reading apparatus according to claim 16, wherein said photoelectric converting element is disposed parallel to said second reference surface.
Claim 21
Dependent Claim
39 words
A reading apparatus according to claim 17, wherein an axial line of said rotary member and a longitudinal line of said photoelectric converting element are disposed in a parallel state by said first reference surface and said second reference.
Claim 22
Dependent Claim
38 words
A reading apparatus according to claim 18, wherein said transparent member has a first surface for guiding the sheet, and a second surface formed at a side opposite to said first surface to contact said photoelectric converting element.
Claim 23
Dependent Claim
17 words
A reading apparatus according to claim 19, wherein said transparent member is held by said holding member.
Claim 24
Dependent Claim
18 words
A reading apparatus according to claim 20, wherein said photoelectric converting element is embedded in said transparent member.
Claim 25
Dependent Claim
28 words
A reading apparatus according to claim 20, further comprising another transparent member disposed opposing said converting element is held between said transparent member and said another transparent member.
Claim 26
Dependent Claim
22 words
A reading apparatus according to claim 20, further comprising a resilient member for biasing said holding member toward said first reference surface.
Claim 27
Dependent Claim
22 words
A reading apparatus according to claim 23, further comprising a second resilient member for biasing said holding means toward said rotary member.
References Cited (Backward Citations)
JPS58127463A
Cited
US4743976A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-12-03 | 1994-06-04 | 1994-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-03 | 1998-06-04 | 1998-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-03 | 2002-06-04 | 2002-12-04 | $7700.00 | Window Closed / Lapsed |