US3981580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and a system for concurrently copying both sides of an original
Assignee: Ricoh Co Ltd
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Filing: 1974-11-05
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Granted: 1976-09-21
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Expires: 1994-11-05
Abstract
Abstract A method and a system are provided for concurrently copying both sides of an original by concurrently scanning nonoverlapping areas of the two sides of the original with two incident beams and scanning adjacent areas of a copy with the resulting reflected beams. Since the two incident beams illuminate areas of the original that are not overlapping, each reflected beam forms only an image of one side of the original, without a faint shadow of the other side of the original. When the original and the copy move in opposite directions and the ratio between their scanning speeds is the same as the ratio between the size of the original and the size of the copy, aligned portions of the opposite sides of the original can be aligned with each other on the copy even though non-aligned areas of the original are scanned by the incident beams.
Inventors
- 👤 Hajime Yamashita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:23
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/50
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
208 words
A system for concurrently copying both sides of an original having a selected length and a selected width onto the same side of a copy having a selected length and a selected width comprising: a first and a second opaque plate overlapping each other and spaced dfrom each other by a small distance to allow the original to pass therebetween in an original scanning direction which is parallel to the length of the original, each plate having an elongated transparent window transverse to the original scanning direction and the windows being spaced from each other along the original scanning direction by a distance which is less than the length of the original; means defining a passageway through which the copy moves in a copy scanning direction which is parallel to the length of the copy; means for forming a reflected light image of the portions of the original scanned by said windows as the original moves in said original scanning direction; and means for scanning adjacent areas of the same side of the copy with said reflected light image as the copy moves along said copy scanning direction, said adjacent areas being side-by-side across the width of the copy and being coextensive along the length of the copy.
Claim 2
Independent Claim
208 words
A system for concurrently copying both sides of an original having a selected length and a selected width onto the same side of a copy having a selected length and a selected width comprising: a first and a second opaque plate overlapping each other and spaced dfrom each other by a small distance to allow the original to pass therebetween in an original scanning direction which is parallel to the length of the original, each plate having an elongated transparent window transverse to the original scanning direction and the windows being spaced from each other along the original scanning direction by a distance which is less than the length of the original; means defining a passageway through which the copy moves in a copy scanning direction which is parallel to the length of the copy; means for forming a reflected light image of the portions of the original scanned by said windows as the original moves in said original scanning direction; and means for scanning adjacent areas of the same side of the copy with said reflected light image as the copy moves along said copy scanning direction, said adjacent areas being side-by-side across the width of the copy and being coextensive along the length of the copy.
Claim 3
Dependent Claim
71 words
A system as in claim 1 wherein said original and copy scanning directions are opposite each other and the ratio between the speed of the original in the original scanning direction and the speed of the copy in the copy scanning direction corresponds to the ratio between the size of the original portion scanned by said windows and the size of the light image thereof with which the copy is scanned.
Claim 4
Dependent Claim
12 words
A system as in claim 2 wherein said ratios are the same.
Claim 5
Dependent Claim
52 words
A system as in claim 1 wherein each plate comprises a first and a second endless belt spaced from each other in the original scanning direction to form said window, each belt adapted to engage the original and to rotate in a direction for moving the original in the original scanning direction.
Claim 6
Independent Claim
172 words
A system for concurrently copying both sides of an original having a selected length and a selected width onto a copy having a selected length and a selected width comprising: means for scanning a first and a second side of the original along the length of the original with a first and a second incident beam respectively to thereby provide a first and a second reflected beam respectively, each of the incident beams being elongated in a direction along the width of the original and said incident beam being spaced from each other along the length of the original; and means for scanning a first and a second area on the same side of the copy with said first and second reflected beam respectively to thereby form thereon copy images of the portions of the original scanned by said first and second incident beam, said first and second areas of the copy being spaced from each other along the width of the copy and being coextensive along the length of the copy.
Claim 7
Independent Claim
172 words
A system for concurrently copying both sides of an original having a selected length and a selected width onto a copy having a selected length and a selected width comprising: means for scanning a first and a second side of the original along the length of the original with a first and a second incident beam respectively to thereby provide a first and a second reflected beam respectively, each of the incident beams being elongated in a direction along the width of the original and said incident beam being spaced from each other along the length of the original; and means for scanning a first and a second area on the same side of the copy with said first and second reflected beam respectively to thereby form thereon copy images of the portions of the original scanned by said first and second incident beam, said first and second areas of the copy being spaced from each other along the width of the copy and being coextensive along the length of the copy.
Claim 8
Dependent Claim
32 words
A system as in claim 5 wherein each of said first and second incident beam is stationary and the original moves in the direction of its length to traverse said incident beams.
Claim 9
Dependent Claim
32 words
A system as in claim 6 wherein each of said first and second reflected beam is stationary and the copy moves in the direction of its length to traverse said reflected beams.
Claim 10
Dependent Claim
21 words
A system as in claim 7 wherein the directions in which the original and the copy move are opposite each other.
Claim 11
Dependent Claim
42 words
A system as in claim 8 wherein the ratio between the scanning speeds of the original and of the copy corresponds to the ratio between the size of the portion of the original which is being copied and the copy image thereof.
Claim 12
Dependent Claim
70 words
A system as in claim 1 wherein the means for forming said reflected light image comprise a single imaging lens interposed between the original and the copy and first and second mirror directing an image of the portion of the original visible through said respective first and second plate through said single lens to form said reflected light image, there being no other lenses between the original and the copy.
Claim 13
Independent Claim
181 words
A method of concurrently copying both sides of an original onto the same side of a copy comprising the steps of: scanning a first side of the original with a first incident beam and a second side of the original with a second incident beam to thereby provide a first and a second reflected beam, each of said incident beams being elongated in a direction transverse to the original scanning direction and the locations on the original where said incident beams impinge being spaced from each other along the scanning directions by a distance which is less than the size of the original in the scanning direction; and scanning, in a copy scanning direction, a first and a second area of the copy, which are on the same side of the copy and are spaced from each other along a direction transverse to the copy scanning direction, with said first and second reflected beam respectively to thereby form thereon a first and a second copy image of the portions of the original scanned by said first and second incident beam respectively.
Claim 14
Independent Claim
181 words
A method of concurrently copying both sides of an original onto the same side of a copy comprising the steps of: scanning a first side of the original with a first incident beam and a second side of the original with a second incident beam to thereby provide a first and a second reflected beam, each of said incident beams being elongated in a direction transverse to the original scanning direction and the locations on the original where said incident beams impinge being spaced from each other along the scanning directions by a distance which is less than the size of the original in the scanning direction; and scanning, in a copy scanning direction, a first and a second area of the copy, which are on the same side of the copy and are spaced from each other along a direction transverse to the copy scanning direction, with said first and second reflected beam respectively to thereby form thereon a first and a second copy image of the portions of the original scanned by said first and second incident beam respectively.
Claim 15
Dependent Claim
33 words
A method as in claim 11 wherein the incident beams are stationary and the step of scanning the original comprises moving the original in the original scanning direction to traverse said incident beams.
Claim 16
Dependent Claim
33 words
A method as in claim 12 wherein the reflected beams are stationary and the step of scanning the copy comprises moving the copy along the copy scanning direction to traverse said reflected beams.
Claim 17
Dependent Claim
20 words
A method as in claim 13 wherein the original scanning direction and the copy scanning direction are opposite each other.
Claim 18
Dependent Claim
42 words
A method as in claim 14 wherein the ratio between the scanning speeds of the original and of the copy corresponds to the ratio between the size of the portion of the original which is being copied and the copy image thereof.
References Cited (Backward Citations)
US2578320A
Cited
US3079839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-21 | 1980-03-22 | 1980-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-21 | 1984-03-22 | 1984-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-21 | 1988-03-22 | 1988-09-21 | $7700.00 | Window Closed / Lapsed |