Dynamic adjustment of characteristics of an image forming appara

Details Dynamic adjustment of characteristics of an image forming appara Dynamic adjustment of characteristics of an image forming appara

1998-07-14

1999-12-07

Grimley, Arthur T.

Electrophotography

Control of electrophotography process

Of plural processes

399 60, 399 72, G03G 1500

Patent

active

059997613

ABSTRACT:
An image forming apparatus in accordance with the invention includes a print engine with a photoreceptor, a laser exposure device for creating an image on the photoreceptor and one or more toning stations for toning the photoreceptor, after imaging. A system for enabling adjustment of the apparatus performance characteristics further includes a sensor for detecting characteristics of a toned image on the photoreceptor. A memory is provided for storing control parameters used to adjust operations of the printer; desired image characteristic parameters and previously measured image parameters. A processor is responsive to a performance assessment procedure for causing the print engine to create a toned test image on the photoreceptor. The processor then compares signals that are indicative of characteristic parameters of the toned test image with desired image characteristic parameters from the memory. Thereafter, in accordance with the comparison, the processor adjusts printer control parameters to bring the characteristics of the printed image closer to those which are dictated by the desired image characteristic parameters.

REFERENCES:
patent: 4026643 (1977-05-01), Bergman
patent: 5250988 (1993-10-01), Matsuura et al.
patent: 5272503 (1993-12-01), LeSueur et al.
patent: 5621497 (1997-04-01), Terasawa et al.

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