Diagnostic procedure to identify cleaner retraction timing fault

Details Diagnostic procedure to identify cleaner retraction timing fault Diagnostic procedure to identify cleaner retraction timing fault

1996-05-15

1997-02-25

Pendegrass, Joan H.

Electrophotography

Diagnostics

Cleaning

G03G 2100

Patent

active

056067216

ABSTRACT:
A method and an apparatus for identifying cleaner retraction timing faults in an electrostatographic printer. A toner image or patch is developed on the photoreceptor during the non-printing mode of the printer. After cleaning by a retractable cleaner, the portion of the image or patch not cleaned is measured and compared to a predetermined length in order to determine cleaner retracting timing faults in the cleaner subsystem.

REFERENCES:
patent: 4977437 (1990-12-01), Asai eat al.

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