US3885871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Document photography system
Assignee: International Business Machines Corp
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Filing: 1974-04-12
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Granted: 1975-05-27
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Expires: 1994-04-12
Abstract
Abstract A document photography system in which the front and rear sides of serially fed continuously moving documents are imaged on an image receptor surface, such as photographic film, which is periodically advanced. An improved optical system utilizing first and second sets of fixed mirrors and fixed common reflecting surfaces provide front and rear images of the document in which the long dimensions of the document images are perpendicular to the direction of the film motion, and the front and rear images of a given document are located end-to-end transversely of the film surface. The width of incoming documents is sensed and the film motion is incremented by amounts proportional to the indicated width of the documents.
Inventors
- 👤 Matthew J Galatha
- 👤 Richard F Tynan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:51
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/50; G03B27/52; G03B27/522; G03B27/525; G03B27/528; G03C; G03C5/00; G03C5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
241 words
In a document photography system for photographing on a photographic film both front and rear sides of elongate documents traveling serially and end to end, the combination comprising a reduction lens system, a first set of fixed mirrors aligned to reflect the image of the front side of one of said documents to be photographed to said lens system, and a second set of fixed mirrors aligned to reflect the image of the reverse side of the document to be photographed to said lens system, said lens system and said mirrors being aligned to project said images on the film surface which are aligned with respect to a common reference line, said common reference line being perpendicular to the length of the film, with the images having their long sides parallel to said reference line and having the orientation of said first and second set of fixed mirrors such that the images generated by the documents being fed end to end serially are presented transverse to the image receiving surface of the film, document transport means for conveying said documents serially and end to end past said first and said second sets of mirrors, film advancing means for feeding said photographic film, width sensing means for indicating the width of documents as they are fed through the system, and means governed by said width sensing means for advancing the film in increments proportional to the width of the documents being photographed.
Claim 2
Dependent Claim
241 words
In a document photography system for photographing on a photographic film both front and rear sides of elongate documents traveling serially and end to end, the combination comprising a reduction lens system, a first set of fixed mirrors aligned to reflect the image of the front side of one of said documents to be photographed to said lens system, and a second set of fixed mirrors aligned to reflect the image of the reverse side of the document to be photographed to said lens system, said lens system and said mirrors being aligned to project said images on the film surface which are aligned with respect to a common reference line, said common reference line being perpendicular to the length of the film, with the images having their long sides parallel to said reference line and having the orientation of said first and second set of fixed mirrors such that the images generated by the documents being fed end to end serially are presented transverse to the image receiving surface of the film, document transport means for conveying said documents serially and end to end past said first and said second sets of mirrors, film advancing means for feeding said photographic film, width sensing means for indicating the width of documents as they are fed through the system, and means governed by said width sensing means for advancing the film in increments proportional to the width of the documents being photographed.
References Cited (Backward Citations)
US2747462A
Cited
US3212399A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |