Apparatus and method for jet drop copying with an array of jets

Facsimile and static presentation processing – Facsimile – Recording apparatus

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346 75, 358293, H04N 110, H04N 124

Patent

active

042596963

ABSTRACT:
A jet drop copying apparatus has a print head which directs a row of jets toward a print sheet mounted on a rotating drum. The row of jets extend substantially across the full width of the print sheet and are operated under control of a printing controller to print a series of tracks extending circumferentially along the sheet. The jets are shifted laterally in synchronism with the drum rotation such that each jet is moved a distance equal to the width of one printing track during one rotation of the drum. The shifting continues until a solid print has been obtained. An illumination device is provided for illuminating a narrow strip extending across a document to be copied and projecting an image of the illuminated strip upon a row of photodetectors. Longitudinal image scanning proceeds in synchronism with the rotation of the printing drum, and there is a lateral shifting of the image in synchronism with the shifting of the jet printing tracks.

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Smith, Modern Optical Engineering, 1966, pp. 82-85.
Bullock, IBM Tech. Disclosure Bulletin, vol. 16, No. 4, pp. 1254-1255.

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