G - Physics – 03 – G
Patent
G - Physics
03
G
314/8
G03G 15/00 (2006.01) G03G 15/22 (2006.01)
Patent
CA 1154496
ABSTRACT Abstract for making lithographic plates directly from a copy original which comprises, an enclosure which houses a copyboard, an illuminating device, an optical train and a carriage. The carriage moves in a horizontal path beneath a platen carrying a sheet of electrophotographie material. The carriage has a corona device, a slit, a toner device including a bias plate and means for withdrawing excess toner. The platen is a cover of the apparatus, can be opened after imaging and toning, the toned electro- photographic member then being removed for further processing. The platen is first positioned so that the electrophotographic member facing the exterior of the chassis and is moved for imaging to face the said member downwardly. The copyboard is loaded in a horizontal position, is moved to a vertical position where the illuminating device, including a light scanning assembly moves over its face in synchronism with movement of the carriage. The copyboard and illuminating device preferably comprise a module built as a self-contained unit capable of being installed operably in the enclosure. The pattern on the copyboard is projected horizontally into a pit or optical chamber where it is deviated upward to cooperate with the slit.
345115
Cox Richard E.
Forrest Jess
Hardy Carl D.
Harris George B.
Kuehnle Manfred R.
Coulter Systems Corporation
Johnson Douglas S. Q.c.
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