Background monitoring device

Details Background monitoring device Background monitoring device

1989-05-22

1993-05-25

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355208, G03G 2100

Patent

active

052144712

ABSTRACT:
An apparatus in which background density of a sheet having visible indicia is monitored. A region of the sheet is scanned and a signal is generated corresponding to the scanned region. The signal corresponding to the scanned region is processed and a signal corresponding to the background density of the sheet is generated.

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