Printed image magnetic signal level control apparatus and method

Details Printed image magnetic signal level control apparatus and method Printed image magnetic signal level control apparatus and method

1990-02-15

1991-07-09

Miller, Jr., George H.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

355260, G01D 1514, G03G 1506

Patent

active

050309773

ABSTRACT:
Magnetic signal level control apparatus for a printer or copier. A continuous sampling of the magnetic characteristics of a reference mark results in constantly adjusting to maintain the specified quality of magnetically readable characters on printed documents. A controller generates a signal which is applied to the developer of the printer to control application of magnetic ink or toner to the photoconductor and consequently to the paper. The invention also includes the method for controlling magnetic signal level.

REFERENCES:
patent: 4338019 (1982-07-01), Terashima et al.
patent: 4672017 (1987-06-01), Kamezaki
patent: 4786942 (1988-11-01), Kusumoto et al.
patent: 4799082 (1989-01-01), Suzuki
patent: 4862828 (1989-09-01), Kumasaka et al.

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