Photocopying – Projection printing and copying cameras – Combined with or convertible to a contact printer
Patent
1984-12-05
1986-03-11
Prescott, A. C.
Photocopying
Projection printing and copying cameras
Combined with or convertible to a contact printer
355 3CH, 355 14CH, 355 14E, G03G 1500
Patent
active
045752249
ABSTRACT:
An electrographic apparatus has a transparent photoconductor on which visible images are formed by applying toner to a latent electrostatic image. The toned image is subsequently transferred to a copy sheet and fused to the sheet. A post-development erase lamp is located on one side of the photoconductor. The density of toned images on the photoconductor is measured by light rays from the erase lamp traveling through the photoconductor and a toned control image thereon to a photodetector on the opposite side of the photoconductor. This eliminates the need for special lamps used only for measuring the density of toned control images.
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IBM Technical Disclosure Bulletin, vol. 24, No. 9, Feb. 1982.
Childress G. Herman
Eastman Kodak Company
Prescott A. C.
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