Toner mark for toner concentration control

Details Toner mark for toner concentration control Toner mark for toner concentration control

1998-02-20

1999-10-26

Goodrow, John

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

399 59, G03G 2100

Patent

active

059737956

ABSTRACT:
A toner mark which is to be sensed by a toner concentration sensor in an electrophotographic printing apparatus includes a rectangular dot pattern where a plurality of toner dot patterns are spaced in a staggered configuration. Each of the toner dot patterns is formed in line which is angled with respect to a width direction of the toner mark. Further, any line along a width direction of the toner mark crosses at least one toner dot pattern.

REFERENCES:
patent: 5339150 (1994-08-01), Hubble et al.
patent: 5546170 (1996-08-01), Ohba et al.
patent: 5767888 (1998-06-01), Schleusener et al.

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