Adjusting copier copy contrast and density during production run

Photocopying – Projection printing and copying cameras – Combined with or convertible to a contact printer

Patent

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Details

355 14SH, 355 3R, 355 14R, 355 14E, 355 35H, 355 14CH, G03G 1500

Patent

active

044511370

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 copies 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: 4179215 (1979-12-01), Hage
patent: 4294536 (1981-10-01), Paxton
patent: 4350435 (1982-09-01), Fiske et al.
patent: 4365889 (1982-12-01), Silverberg

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