Screen drum type electrographic apparatus having a correcting le

Details Screen drum type electrographic apparatus having a correcting le Screen drum type electrographic apparatus having a correcting le

1976-07-23

1978-05-30

Moses, Richard L.

Photocopying

Including fiber optics

355 11, G03G 1528

Patent

active

040920658

ABSTRACT:
An improved screen drum type electrographic apparatus which can obtain a picture image having a correct aspect ratio is disclosed. The apparatus comprises a cylindrical lens arranged in an optical passage including an optical system for scanning a manuscript such as printed matter disposed on a table. The cylindrical lens has such a radius of curvature that an image magnification in the scanning direction only is defined by 1/K (K>1) and a length which is sufficient to optically cover the scanning width of a screen drum or the manuscript. The apparatus is so constructed that the ratio of the peripheral speed of the screen drum to the moving speed of the manuscript table or the optical system for scanning manuscript is defined by 1/K.

REFERENCES:
patent: 4021109 (1977-05-01), Tanaka et al.

Affiliated with

Also associated with

Rating

Screen drum type electrographic apparatus having a correcting le does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Screen drum type electrographic apparatus having a correcting le, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Screen drum type electrographic apparatus having a correcting le will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-466843