Adjusting copier copy contrast and density during production run

Details Adjusting copier copy contrast and density during production run Adjusting copier copy contrast and density during production run

1986-05-27

1988-02-23

Prescott, A. C.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 14SH, 355 3R, 355 14R, 355 14E, 355 3SH, 355 14CH, G03G 1500

Patent

active

RE0326119

ABSTRACT:
Apparatus including a recirculating feeder and document positioner is coupled to a copier. The copier has variable contrast and density controls. Ordinarily, the document positioner directly feeds document sheets seriatim to the recirculating feeder tray. However, if a document sheet requires copier contrast or density adjustments, the document sheet is stopped at the copier exposure platen, adjustments made to the contrast and density controls and a copy is made. Further adjustments and copiers are made until a proof copy having an acceptable contrast and density is produced. The document sheet is then delivered to the tray. A memory stores the location in the document of each stopped document sheet and the proof copy adjustment information. When all document sheets are in the tray, then the recirculating feeder, copier and memory operate to produce a production run with each copy sheet having acceptable contrast and density.

REFERENCES:
patent: 4176945 (1979-12-01), Holzhauser et al.
patent: 4179215 (1979-12-01), Hage
patent: 4248528 (1981-02-01), Sahay
patent: 4294536 (1981-10-01), Paxton
patent: 4350435 (1982-09-01), Fiske et al.
patent: 4365889 (1982-12-01), Silverberg

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