Variable magnification copier

Details Variable magnification copier Variable magnification copier

1975-10-30

1977-06-14

Griffin, Donald A.

Photocopying

Projection printing and copying cameras

Original moves continuously

355 76, G03B 2748, G03B 2762

Patent

active

040294110

ABSTRACT:
A copier providing selectively variable magnification copying of documents while the documents are moved uninterruptedly through a document imaging station on a document transport belt, and full-frame exposed by a flash illumination system, where one edge of each document is registered on the document transport, and the position within the document exposure station at which a document is copied is shifted in proportion to the selected magnification of the optical system by proportionally changing the initiation time of the illumination system. The optical system consists of a fixed mirror, a fixed focus movable lens, and a movable mirror all along a common optical axis, and the movable mirror and lens move in the same direction to change the magnification, shift the imaging position, and control the illumination system operation to compensate for the shift in imaging position.

REFERENCES:
patent: 3521950 (1970-07-01), Gardner et al.
patent: 3703334 (1972-11-01), Knechtel et al.
patent: 3762813 (1973-10-01), Fowlie et al.
patent: 3778147 (1973-12-01), Reehil et al.
patent: 3792926 (1974-02-01), Knechtel et al.
patent: 3865482 (1975-02-01), Bendall et al.
patent: 3891315 (1975-06-01), Kolibas
patent: 3901593 (1975-08-01), Kogiso et al.
patent: 3985438 (1976-10-01), Kurita
IBM Tech. Disclosure Bull. vol. 6, No. 2, 1963.

Affiliated with

Also associated with

Rating

Variable magnification copier does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Variable magnification copier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable magnification copier will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-7350