Browse Prior Art Database

Laser Copier Printer

IP.com Disclosure Number: IPCOM000086202D
Original Publication Date: 1976-Aug-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Williams, GT: AUTHOR

Abstract

This apparatus is capable of selectively operating as a copier or as a laser printer. When operating as a copier, an image of original document 10 is reflected through lens 11 to photoconductor drum 12. When operating as a printer, laser beam 13 is binary-data driven, for example as described in U.S. Patent 3,898,627.

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Laser Copier Printer

This apparatus is capable of selectively operating as a copier or as a laser printer. When operating as a copier, an image of original document 10 is reflected through lens 11 to photoconductor drum 12. When operating as a printer, laser beam 13 is binary-data driven, for example as described in U.S. Patent 3,898,627.

Laser beam 13 also operates when in the copy mode to erase, i.e., discharge, the photoconductor surrounding its working area. This working area is defined as that photoconductor area which will cooperate with a sheet of paper at transfer station 14.

A detector 15 is provided to sense failure of the laser beam and to inhibit operation in the copy mode if such a failure occurs. In this manner, cleaning station 16 is protected, since failure of the laser beam in the copy mode would not be apparent to the operator, but would result in a black, toned border around the photoconductor's working area, which border would pass through the cleaner to be cleaned thereby. This safety interlock also prevents other undesirable effects, such as toner dusting of the coronas, illumination mechanism, etc.

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