Cleaning blade defect sensing arrangement

Details Cleaning blade defect sensing arrangement Cleaning blade defect sensing arrangement

1989-07-21

1990-06-26

Pendegrass, Joan H.

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Contact printing

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355203, 152565, G03G 2100

Patent

active

049376330

ABSTRACT:
An elastomeric cleaning blade supported in cleaning relationship with the imaging surface of an electrophotographic device, for removal of residual toner on the surface, is provided with a cleaning edge having predetermined and detectable characteristics of the cleaning blade. An electrical signal is applied to the cleaning edge, and variations in the electrical characteristics are monitored. Change in the electrical characteristics of the cleaning blade edge will be highly indicative of a cleaning blade failure, or impending failure. A signal based on the variation in electrical characteristics may be produced to create a warning indication or cause a corrective response to occur.

REFERENCES:
patent: 4319831 (1982-03-01), Matsui et al.
patent: 4465362 (1984-08-01), Tohma et al.
patent: 4501486 (1985-02-01), Landa
patent: 4819026 (1989-04-01), Lange et al.
Xerox Disclosure Journal; "Impregnated Poromeric Material Cleaning Blade"; Spencer et al.; vol. 1, No. 4, Apr. 1976, p. 79.

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