US3628859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Imaging machine improvement
Assignee: Xerox Corp
•
Filing: 1969-12-22
•
Granted: 1971-12-21
•
Expires: 1989-12-22
Abstract
Abstract Method and apparatus for forming registration errors in multiple slit scanning optical systems by repositioning the lens of the system in a plane perpendicular to its axis to shift the projection in the image plane. By shifting the optical systems to eliminate or bias a registration error between multiple slit scan optical systems, a minimization of slit errors are accomplished.
Inventors
- 👤 Edwin Zucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:28
CPC Classifications
G; G03; G03G; G03G17/00; G03G17/04; G03G15/00; G03G15/01; G03G15/0105; G03G15/011
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
183 words
Apparatus for reducing registration error in reexposure systems for superimposing object data on an image member including a movable imaging member; means to move the imaging member at a predetermined surface velocity; a first scanning optical projection system for projecting movable object data having a lens and a fixed conjugate position for projecting a flowing image on the imaging member; a second scanning optical projection system for projecting movable object data having a lens and a fixed conjugate position for projecting a flowing image on the imaging member; a second scanning optical projection system for projecting movable object data having a lens and a fixed conjugate position for projecting a flowing image on the imaging member such that it projects the same object data on the same portion of the imaging member as does the first optical projection system when the member is moved at the predetermined surface velocity, and means to adjust the position of the projection of at least one of the optical projection systems relative to the other for registering the projection of object data between the optical projection systems.
Claim 2
Dependent Claim
183 words
Apparatus for reducing registration error in reexposure systems for superimposing object data on an image member including a movable imaging member; means to move the imaging member at a predetermined surface velocity; a first scanning optical projection system for projecting movable object data having a lens and a fixed conjugate position for projecting a flowing image on the imaging member; a second scanning optical projection system for projecting movable object data having a lens and a fixed conjugate position for projecting a flowing image on the imaging member; a second scanning optical projection system for projecting movable object data having a lens and a fixed conjugate position for projecting a flowing image on the imaging member such that it projects the same object data on the same portion of the imaging member as does the first optical projection system when the member is moved at the predetermined surface velocity, and means to adjust the position of the projection of at least one of the optical projection systems relative to the other for registering the projection of object data between the optical projection systems.
Claim 3
Dependent Claim
31 words
The apparatus of claim 1 wherein said means to adjust includes means to move a lens of one of said optical projection systems perpendicular to the optical axis of the system.
Claim 4
Dependent Claim
32 words
Apparatus as in claim 1 in which a lens in at least one of the projection systems is adjusted to effect a controllable change in flowing image at the imaging position thereof.
Claim 5
Dependent Claim
40 words
Apparatus as in claim 1 in which the motion and registration of the flowing images of all the imaging positions subsequent to the first is adjustably superposed in a preferred manner, over the imaging position of the first projection system.
Claim 6
Dependent Claim
39 words
The apparatus of claim 1 wherein said means to adjust the position of the projected image includes adjusting the projection systems to minimize a'' where a'' is the sum of the resolution and registration errors at the imaging positions.
Claim 7
Dependent Claim
79 words
In apparatus for reducing registration error in multiple reexposure systems having a movable imaging member, multiple scanning optical projection systems for projecting moving object data for superposed image reinforcement at fixed spaced positions interfaced by the moving imaging member, and a lens for each multiple scanning optical projection system, apparatus for reducing registration error between the reexposure systems including means to move at least one of the multiple lenses within its conjugate plane relative to the optical projection axis.
Claim 8
Dependent Claim
79 words
In apparatus for reducing registration error in multiple reexposure systems having a movable imaging member, multiple scanning optical projection systems for projecting moving object data for superposed image reinforcement at fixed spaced positions interfaced by the moving imaging member, and a lens for each multiple scanning optical projection system, apparatus for reducing registration error between the reexposure systems including means to move at least one of the multiple lenses within its conjugate plane relative to the optical projection axis.
Claim 9
Dependent Claim
37 words
The apparatus of claim 6 wherein said means to move includes lens housing means and gear means cooperatively associated with said lens housing means for moving the lens perpendicular to the axis of the optical projection system.
Claim 10
Dependent Claim
33 words
The apparatus of claim 6 further including gauge means for determining error correction change and wherein said means to move at least one of the multiple lens is slaved to said gauge means.
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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |