US3632203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical scanner
Assignee: AB Dick Co
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Filing: 1969-10-31
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Granted: 1972-01-04
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Expires: 1989-10-31
Abstract
Abstract A scanning device for a copying machine in which the original to be copied is stationary, the photosensitive paper moves on a conveyor, and a lens carriage moves at half the speed of the conveyor in the direction of its motion. The carriage rolls on wheels which rest on the conveyor and contact a fixed track from below, moving at half the speed of the conveyor because of the frictional contact of the wheels with the two parallel surfaces.
Inventors
- 👤 James A Kolibas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:26
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/522; G03B27/525; G03B27/526; G03B27/527
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
253 words
An exposure-scanning device for producing electrostatic images of originals, comprising: a sheet conveyor means for establishing a focus plane and for conveying a copy sheet in said plane; a copyboard holder means for establishing a fixed plane and for holding an original with the surface thereof to be copied in said plane; a scan carriage carrying a focusing lens, illuminating means for providing radiant energy to be reflected from the original for projection through said lens upon the copy sheet, a housing enclosing said lens and illuminating means, said copyboard holder means and sheet conveyor means being oriented with respect to said lens such that an image of the material held by said copyboard is focused upon said moving plane, whereby as the carriage moves along said copyboard a line-by-line image of the original is projected upon the copy sheet; a wheel carried by said housing by a mounting means which permits the wheel to rotate in a fixed position relative to said carriage, said sheet conveyor providing a first track on which said wheel rides; and a retainer track having a surface parallel to said sheet conveyor means and engageable with said wheel, said retainer track having a first position out of contact with the wheel and a second position in engagement therewith, and means to move the track to said second position to effect a driving of said scan carriage at a speed which is half the speed of the conveyor means and to said first position for scan carriage rest.
Claim 2
Dependent Claim
253 words
An exposure-scanning device for producing electrostatic images of originals, comprising: a sheet conveyor means for establishing a focus plane and for conveying a copy sheet in said plane; a copyboard holder means for establishing a fixed plane and for holding an original with the surface thereof to be copied in said plane; a scan carriage carrying a focusing lens, illuminating means for providing radiant energy to be reflected from the original for projection through said lens upon the copy sheet, a housing enclosing said lens and illuminating means, said copyboard holder means and sheet conveyor means being oriented with respect to said lens such that an image of the material held by said copyboard is focused upon said moving plane, whereby as the carriage moves along said copyboard a line-by-line image of the original is projected upon the copy sheet; a wheel carried by said housing by a mounting means which permits the wheel to rotate in a fixed position relative to said carriage, said sheet conveyor providing a first track on which said wheel rides; and a retainer track having a surface parallel to said sheet conveyor means and engageable with said wheel, said retainer track having a first position out of contact with the wheel and a second position in engagement therewith, and means to move the track to said second position to effect a driving of said scan carriage at a speed which is half the speed of the conveyor means and to said first position for scan carriage rest.
Claim 3
Dependent Claim
132 words
An exposure-scanning device comprising: transport means establishing a focus plane and conveying a first sheet in a path in said plane, said transport means including a first wheel track; holder means for establishing a fixed position for a second Sheet in a focus plane; a scan carriage carrying means including a lens for focusing one said focus plane onto the other; a wheel rotatably carried by said carriage, and riding said first wheel track; a second wheel track fixed with respect to the holder means and spaced from said first wheel track and adapted to ride said wheel whereby in operation with a speed differential between said first and second tracks the carriage is moved at a speed of one-half said differential in the direction of the track having the greater speed.
Claim 4
Dependent Claim
132 words
An exposure-scanning device comprising: transport means establishing a focus plane and conveying a first sheet in a path in said plane, said transport means including a first wheel track; holder means for establishing a fixed position for a second Sheet in a focus plane; a scan carriage carrying means including a lens for focusing one said focus plane onto the other; a wheel rotatably carried by said carriage, and riding said first wheel track; a second wheel track fixed with respect to the holder means and spaced from said first wheel track and adapted to ride said wheel whereby in operation with a speed differential between said first and second tracks the carriage is moved at a speed of one-half said differential in the direction of the track having the greater speed.
Claim 5
Dependent Claim
137 words
An exposure-scanning device comprising: a sheet transport conveyor for conveying a copy sheet in a focus plane; a first wheel track running in coordination with and at the speed of said conveyor; holder means for holding an original in a plane; a scan carriage carrying means including a lens for focusing the original onto the conveyor focus plane; a wheel carried by said carriage and riding said first wheel track; a second wheel track spaced from said first wheel track and disposed in engagement with said wheel; and means for effecting relative movement between said first and second wheel tracks whereby in operation with a speed differential between said first and second tracks the carriage is moved at a speed of one-half said differential relative to and in the direction of the track having the greater speed.
Claim 6
Dependent Claim
137 words
An exposure-scanning device comprising: a sheet transport conveyor for conveying a copy sheet in a focus plane; a first wheel track running in coordination with and at the speed of said conveyor; holder means for holding an original in a plane; a scan carriage carrying means including a lens for focusing the original onto the conveyor focus plane; a wheel carried by said carriage and riding said first wheel track; a second wheel track spaced from said first wheel track and disposed in engagement with said wheel; and means for effecting relative movement between said first and second wheel tracks whereby in operation with a speed differential between said first and second tracks the carriage is moved at a speed of one-half said differential relative to and in the direction of the track having the greater speed.
Claim 7
Dependent Claim
60 words
An exposure-scanning device as defined in claim 3, further characterized in that: said sheet transport conveyor comprised a plurality of separate belts reeved about oppositely disposed end rollers, and said wheel means rides directly upon one of the belts and carries at least part of the scan carriage weight to assure full engagement of the wheel means with the belt.
Claim 8
Dependent Claim
60 words
An exposure-scanning device as defined in claim 3, further characterized in that: said track is a straight bar carried in a fixed position with respect to said conveyor, but shiftable between a first position out of contact with said wheel means and a second position parallel said conveyor and in contact with the side of said wheel opposite said conveyor.
Claim 9
Dependent Claim
43 words
An exposure-scanning device as defined in claim 3, further characterized in that: said object plane and conveyor are positioned in planes extending in angular relationship, and a mirror is provided with said lens to reverse the image and place it on said conveyor.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |