Real time diagnostic system for reprographic machines

Details Real time diagnostic system for reprographic machines Real time diagnostic system for reprographic machines

1986-09-02

1988-04-19

Braun, Fred L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 14C, 371 15, G03G 2100

Patent

active

047393661

ABSTRACT:
A reproduction machine for making copies from original documents includes a diagnostic system for examining the operation of the transport devices moving paper sheets through the paper path. Paper path sensors are located along the paper paths for sensing the passage of paper sheets as they are moved therethrough. A device clock generates information regarding the times of sheet passage past sensors. Data representative of machine operating time and corresponding to paper sheet passage past the sensors is stored in an addressable memory for a number of paper sheet passages. Upon indication of a fault condition, such as a paper jam, the data stored in the addressable memory is moved to a non-volatile memory. A device control and display are provided to access and manipulate the stored data.

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patent: 4133477 (1979-01-01), Marino et al.
patent: 4156133 (1979-05-01), Legg
patent: 4249080 (1981-02-01), Pritchett et al.
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patent: 4305653 (1981-12-01), Evanitsky
patent: 4335949 (1982-06-01), Kukucka et al.
patent: 4477901 (1984-10-01), Braband et al.
patent: 4589080 (1986-05-01), Abbott et al.

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