Multi-beam scanning system compensated for banding

Details Multi-beam scanning system compensated for banding Multi-beam scanning system compensated for banding

1990-01-25

1991-01-29

Reinhart, Mark J.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

346160, 358296, H04N 121

Patent

active

049890190

ABSTRACT:
A multi-beam laser ROS print system is described which is adapted to minimize banding in output prints. Multiple beams from a laser source are separated by a distance which causes the beam to scan consecutive lines in a non-consecutive scan; e.g., according to a particular beam interlacing sequence. It has been found that as a general proposition, banding decreases with increasing interlacing orders and, furhter, that once a print system error frequency, or another frequency of interest has been identified, there are a number of interlacing orders, each an optimum value, which can be introduced to reduce banding which would ordinarily result from the particular frequency error.

REFERENCES:
patent: 4547038 (1985-10-01), Mori
patent: 4566043 (1986-01-01), Tamura
patent: 4637679 (1987-01-01), Funato
patent: 4788560 (1988-11-01), Miura
patent: 4796964 (1989-01-01), Connell et al.
patent: 4797694 (1989-01-01), Agostinelli et al.
patent: 4801950 (1989-01-01), Frehling
Applied Optics, Jul. 1987, vol. 26, No. 13, by A. Arimoto et al., entitled, "Dual Beam Laser Diode Scanning Systems".

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