Recorders – Printing – dotting – or punching marker – Ink transfer support or moving means
Patent
1985-04-02
1987-03-17
Goldberg, E. A.
Recorders
Printing, dotting, or punching marker
Ink transfer support or moving means
350320, 350 68, 355 56, G01D 942
Patent
active
046511709
ABSTRACT:
A laser printer is disclosed which uses a rotating polygon and a cylindrical mirror disposed between the polygon and an image zone. The cylindrical mirror corrects for pyramidal errors in an output image formed on a moving photosensitive member disposed at the image zone by making the operative polygon facet and the image zone optically conjugate in the page scan direction. To change the length of the image in the line scan direction at the image zone, the distance between the polygon and image zone is varied. This is accomplished by moving the cylindrical mirror or by positioning a different cylindrical mirror at a new optical path position. The velocity of the photosensitive member is adjusted to change the length of the output image in the page scan direction. The tilt angle of the cylindrical mirror moved to the new optical path position is changed or the cylindrical mirror is removed from the path and a different cylindrical mirror is inserted at a new optical path position. In either case, at the new image format size, the cylindrical mirror makes the operative polygon facet optically conjugate with the image zone in the page scan direction to correct for pyramidal errors.
Anamorphic beam shaping optics are provided which preceed the polygon to form and position the line scan waist so that it is adjacent to the image zone at different line scan lengths, and to change the beam size at the polygon in the page scan direction at different page scan lengths.
REFERENCES:
patent: 3603727 (1971-09-01), Kinugawa et al.
patent: 3657471 (1972-04-01), Sasabe et al.
patent: 3746447 (1973-07-01), Smith
patent: 4040096 (1977-08-01), Starkweather
patent: 4129377 (1978-12-01), Miyamoto
patent: 4169275 (1979-09-01), Gunning
patent: 4205350 (1980-05-01), Gunning
patent: 4247160 (1981-01-01), Brueggemann
patent: 4264120 (1981-04-01), Uchiyama et al.
patent: 4279002 (1981-07-01), Rider
Chandler Jasper S.
Kessler David
Muka Edward
Eastman Kodak Company
Goldberg E. A.
Owens Raymond L.
Reinhart Mark
LandOfFree
Laser printer having means for changing the output-image size does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Laser printer having means for changing the output-image size, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laser printer having means for changing the output-image size will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1791028