US4959536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet conveying and reading apparatus having a light-intercepting member for reducing noise
Assignee: Canon Inc
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Filing: 1990-02-07
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Granted: 1990-09-25
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Expires: 2010-02-07
Abstract
Abstract A sheet conveying and reading apparatus has a conveyance path for conveying a sheet, a transparent plate for contacting the surface of the sheet being conveyed on the conveyance path, a photoelectric conversion element disposed on the transparent plate or in proximity to the surface thereof opposite to the surface of the transparent plate contacting the sheet, and a light-intercepting member for covering the side edge surfaces of the transparent plate.
Inventors
- 👤 Kazuya Ijuin
- 👤 Shinnichiro Otsuki
- 👤 Yuji Nakano
- 👤 Hiroshi Ogushi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:24
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: 33
Claim 1
Independent Claim
93 words
A sheet conveying and reading apparatus comprising: a conveyance path for conveying sheets; a transparent plate having a first surface at least a part of which is for contacting a surface of the sheets being conveyed on said conveyance path, and having a second surface opposed to said first surface; a photoelectric conversion element abutting said second surface of said transparent plate, for reading an image on a conveyed sheet; and a light-intercepting member for covering a side edge surface of said transparent plate to prevent light from entering said side edge surface.
Claim 2
Dependent Claim
93 words
A sheet conveying and reading apparatus comprising: a conveyance path for conveying sheets; a transparent plate having a first surface at least a part of which is for contacting a surface of the sheets being conveyed on said conveyance path, and having a second surface opposed to said first surface; a photoelectric conversion element abutting said second surface of said transparent plate, for reading an image on a conveyed sheet; and a light-intercepting member for covering a side edge surface of said transparent plate to prevent light from entering said side edge surface.
Claim 3
Dependent Claim
31 words
A sheet conveying and reading apparatus according to claim 1, further comprising conveying means disposed in said conveyance path for conveying the sheet while urging the sheet against said transparent plate.
Claim 4
Dependent Claim
43 words
A sheet conveying and reading apparatus according to claim 2, further comprising feed means for separating and feeding piled sheets one by one, disposed upstream of said conveying means with respect to a direction of conveyance of the sheets along said conveyance path.
Claim 5
Dependent Claim
22 words
A sheet conveying and reading apparatus according to claim 1, wherein said photoelectric conversion element is in contact with said transparent plate.
Claim 6
Dependent Claim
21 words
A sheet conveying and reading apparatus according to claim 1, wherein said photoelectric conversion element is embedded into said transparent plate.
Claim 7
Dependent Claim
40 words
A sheet conveying and reading apparatus according to claim 1, further comprising a cover member for covering said conveyance path, said cover member having a receiving port for receiving a sheet therein and a discharge port discharging a sheet therethrough.
Claim 8
Dependent Claim
38 words
A sheet conveying and reading apparatus according to claim 6, wherein said side edge surface of said transparent plate is opposed to said receiving port or said discharge port, and wherein said light-intercepting member covers said side edge.
Claim 9
Dependent Claim
54 words
A sheet conveying and reading apparatus according to claim 1, wherein said light-intercepting member has a surface covering a downstream side end surface of said transparent plate with respect to the direction of conveyance of the sheet and becomes lower toward the downstream side with respect to a direction of conveyance of the sheet.
Claim 10
Dependent Claim
60 words
A sheet conveying and reading apparatus according to claim 1, further comprising a second transparent plate on the side opposite to said first surface of said transparent plate, and wherein said photoelectric conversion element is disposed between said transparent plate and said second transparent plate, and said light-intercepting member covers also a side edge surface of said second transparent plate.
Claim 11
Dependent Claim
51 words
A sheet conveying and reading apparatus according to claim 9, further having illuminating means for illuminating the surface of said sheet through said transparent plate and said second transparent plate, and wherein said photoelectric conversion element reads an image formed on the surface of said sheet illuminated by said illuminating means.
Claim 12
Dependent Claim
25 words
A sheet conveying and reading apparatus according to claim 1, wherein said photoelectric conversion element is disposed in a recess formed in said transparent plate.
Claim 13
Dependent Claim
22 words
A sheet conveying and reading apparatus according to claim 1, wherein said light-intercepting member includes paint coated on said side edge surface.
Claim 14
Dependent Claim
24 words
A sheet conveying and reading apparatus according to claim 1, wherein said light-intercepting member covers a side edge surface from which light is incident.
Claim 15
Dependent Claim
145 words
A sheet conveying and reading apparatus having: first conveying means for conveying a sheet; a first transparent plate having a first surface at least a portion of which is for contacting a surface of the sheet conveyed by said first conveying means, and a second surface opposite said first surface; a second transparent plate disposed on the second surface of said first transparent plate; a photoelectric conversion element abutting the second surface of said first transparent plate, for reading an image on the sheet; a light-intercepting member for covering side edge surfaces of said first and second transparent plates to prevent light from entering the side edge surfaces; second conveying means for imparting a conveyance force to the sheet while urging the sheet against said first transparent plate; and illuminating means for illuminating the surface of said sheet through said first and second transparent plates.
Claim 16
Dependent Claim
145 words
A sheet conveying and reading apparatus having: first conveying means for conveying a sheet; a first transparent plate having a first surface at least a portion of which is for contacting a surface of the sheet conveyed by said first conveying means, and a second surface opposite said first surface; a second transparent plate disposed on the second surface of said first transparent plate; a photoelectric conversion element abutting the second surface of said first transparent plate, for reading an image on the sheet; a light-intercepting member for covering side edge surfaces of said first and second transparent plates to prevent light from entering the side edge surfaces; second conveying means for imparting a conveyance force to the sheet while urging the sheet against said first transparent plate; and illuminating means for illuminating the surface of said sheet through said first and second transparent plates.
Claim 17
Dependent Claim
61 words
A sheet conveying and reading apparatus according to claim 14, wherein said first conveying means lies upstream of said second conveying means with respect to a direction of conveyance by said first conveying means, and further comprising separating means disposed adjacent said first conveying means for separating one sheet from a plurality of sheets in cooperation with said first conveying means.
Claim 18
Dependent Claim
27 words
A sheet conveying and reading apparatus according to claim 14, further comprising holding means for holding said first and second transparent plates and said photoelectric conversion element.
Claim 19
Dependent Claim
20 words
A sheet conveying and reading apparatus according to claim 16, wherein said holding means serves also as said light-intercepting member.
Claim 20
Dependent Claim
26 words
A sheet conveying and reading apparatus according to claim 14, wherein said photoelectric conversion element is provided in a recess formed in said first transparent plate.
Claim 21
Dependent Claim
22 words
A sheet conveying and reading apparatus according to claim 14, wherein said light-intercepting member includes paint coated on said side edge surface.
Claim 22
Dependent Claim
27 words
A sheet conveying and reading apparatus according to claim 14, wherein said photoelectric conversion element is disposed between said first transparent plate and said second transparent plate.
Claim 23
Dependent Claim
24 words
A sheet conveying and reading apparatus according to claim 14, wherein said light-intercepting member covers a side edge surface from which light is incident.
Claim 24
Dependent Claim
79 words
An image reading apparatus comprising: a transparent member of predetermined thickness having (1) a first surface which is for contacting an image surface, and (2) a second surface opposite said first surface; a photoelectric conversion element abutting the second surface of said transparent member, for reading the image of the image surface through said transparent member; and a light-intercepting member for covering a side edge surface of said transparent member to prevent light from entering the side edge surface.
Claim 25
Dependent Claim
79 words
An image reading apparatus comprising: a transparent member of predetermined thickness having (1) a first surface which is for contacting an image surface, and (2) a second surface opposite said first surface; a photoelectric conversion element abutting the second surface of said transparent member, for reading the image of the image surface through said transparent member; and a light-intercepting member for covering a side edge surface of said transparent member to prevent light from entering the side edge surface.
Claim 26
Dependent Claim
26 words
An image reading apparatus according to claim 22, wherein said light-intercepting member includes a coating material applied to the side edge surface of said transparent member.
Claim 27
Dependent Claim
29 words
An image reading apparatus according to claim 23, wherein said light-intercepting member includes an adhesive agent applied to the side edge surface of said transparent member of predetermined thickness.
Claim 28
Dependent Claim
43 words
An image reading apparatus according to claim 22, further comprising a second transparent member of predetermined thickness disposed on the second surface of said transparent member, and wherein said photoelectric conversion element is disposed between said transparent member and said second transparent member.
Claim 29
Dependent Claim
22 words
An image reading apparatus according to claim 25, wherein said light-intercepting member covers a side edge surface of said second transparent member.
Claim 30
Dependent Claim
21 words
An image reading apparatus according to claim 26, further comprising illuminating means for illuminating the image surface through said transparent member.
Claim 31
Dependent Claim
23 words
An image reading apparatus according to claim 22, wherein said photoelectric conversion element is disposed in a recess formed in said transparent member.
Claim 32
Dependent Claim
21 words
An image reading apparatus according to claim 22, wherein said light-intercepting member includes paint coated on over said side edge surface.
Claim 33
Dependent Claim
22 words
An image reading apparatus according to claim 22, wherein said light-intercepting member covers a side edge surface from which light is incident.
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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) | 1993-09-24 | 1994-03-26 | 1994-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-24 | 1998-03-26 | 1998-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-24 | 2002-03-26 | 2002-09-25 | $7700.00 | Window Closed / Lapsed |