Patent US4415258A successfully refreshed from Google Patents.
US4415258A
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Linear lens array imaging system for forming reduced or enlarged images at an image plane
Assignee: Xerox Corp
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Filing: 1982-04-30
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Granted: 1983-11-15
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Expires: 2002-04-30
Abstract
Abstract An imaging system is disclosed which employs a lens array positioned to transmit reflected images from a document in an object plane onto an imaging plane at a reduction or enlargement value. The document, lens array and imaging plane are moved with respect to each other within certain prescribed and preferred velocity ratios.
Inventors
- 👤 James D. Rees
- 👤 John A. Durbin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:20
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/522; G03B27/525; G03B27/526
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
101 words
An imaging system for projecting an erect image of a document lying in an object plane onto a photoreceptor lying in an image plane parallel to said object plane at at least one magnification m other than unity, said system including: an imaging assembly positioned between said object plane and photoreceptor, first drive means for driving said photoreceptor at a first velocity v, second drive means for driving said document at a second velocity v', and third drive means for driving said imaging assembly at a third velocity v", said first, second and third velocities being related by the expression ##EQU9##
Claim 2
Dependent Claim
101 words
An imaging system for projecting an erect image of a document lying in an object plane onto a photoreceptor lying in an image plane parallel to said object plane at at least one magnification m other than unity, said system including: an imaging assembly positioned between said object plane and photoreceptor, first drive means for driving said photoreceptor at a first velocity v, second drive means for driving said document at a second velocity v', and third drive means for driving said imaging assembly at a third velocity v", said first, second and third velocities being related by the expression ##EQU9##
Claim 3
Dependent Claim
27 words
The imaging system of claim 1 wherein said document and photoreceptor are driven in a first direction and said imaging assembly is driven in a second direction.
Claim 4
Dependent Claim
8 words
The imaging system of claim 2 wherein |v"|=|v'|.
Claim 5
Dependent Claim
8 words
The imaging system of claim 2 wherein |v"|=|(v'/2)|.
Claim 6
Dependent Claim
28 words
The imaging system of claim 1 wherein v'=0 and m<1 and wherein said imaging assembly is moved in the same direction as said photoreceptor at a velocity ##EQU10##
Claim 7
Dependent Claim
16 words
The imaging system of claim 5 wherein m>1 and wherein said imaging assembly direction is reversed.
Claim 8
Dependent Claim
12 words
The imaging system of claim 6 wherein the photoreceptor direction is reversed.
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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) | 1986-11-14 | 1987-05-16 | 1987-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-14 | 1991-05-16 | 1991-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-14 | 1995-05-16 | 1995-11-15 | $7700.00 | Window Closed / Lapsed |