Claims
- 1. In the method of producing copies electrostatically using a movable photoreceptor, the steps comprising:
- (a) flash illuminating an original to be reproduced to produce a light image representative of said original;
- (b) projecting said light image by means of an infinitely variable lens means onto the photoreceptor whereby to form a latent electrostatic image of the original on said photoreceptor for development and transfer to copy substrate material;
- (c) changing actuation of said illuminating flash to displace the light image produced on said photoreceptor and the position of the developed image on said copy substrate material; and
- (d) operating said lens means to adjust the size of the light image projected by said lens means onto the photoreceptor so as to produce a copy of the entire original without deletion of any information due to displacement of said image.
- 2. The method according to claim 1 including the steps of:
- developing the latent electrostatic image;
- bringing copy substrate material into juxtaposition with the photoreceptor in predetermined timed relationship with the photoreceptor and the developed image thereon;
- delaying actuation of the illuminating flash to retard transfer of the developed image to said copy substrate material and thereby increase the margin along the leading edge of the copy; and
- transfering said developed image to said copy substrate material.
- 3. The method according to claim 2, including the step of:
- operating said lens means to reduce the size of the image produced on said copy substrate material to avoid deletion of any information on the trailing portion of the image produced on said copy substrate material due to retarding of said image transfer.
- 4. The method according to claim 1, including the steps of:
- locating an edge of the original corresponding to the leading edge of the latent electrostatic image produced on said photoreceptor in a predetermined position so as to normally produce alignment therebetween;
- delaying actuation of said illuminating flash to move the latent electrostatic image produced on said photoreceptor backward to provide a margin of selected size along the leading edge of the copy substrate material; and
- operating said lens means to optimize the size of the image produced on said copy substrate material and assure reproduction of the entire original without deletion of any information due to said margin.
- 5. In an apparatus for producing copies electrostatically having a movable photoreceptor, the combination of:
- (a) flash illumination means for illuminating the original whereby to produce a light image representative of said original;
- (b) zoom lens means for projecting the light image produced by said flash illumination means onto said photoreceptor whereby to form a latent electrostatic image of said original on said photoreceptor;
- (c) developing means to develop said latent electrostatic image,
- (d) transfer means to transfer the developed image from said photoreceptor to copy substrate material;
- (e) timing means for selectively varying actuation of said flash illuminating means to displace the image produced on said photoreceptor and change the size of the margins on said copy substrate material; and
- (f) control means for operating said zoom lens means to adjust the size of the light image projected by said zoom lens means to assure production of the entire original without deletion due to changes in margin size.
Parent Case Info
This is a division of application Ser. No. 577,379, filed May 14, 1975 and now U.S. Pat. No. 4,046,467.
US Referenced Citations (6)
Divisions (1)
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Number |
Date |
Country |
Parent |
577379 |
May 1975 |
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