Printhead for color printer providing image edge enhancement

Details Printhead for color printer providing image edge enhancement Printhead for color printer providing image edge enhancement

1989-12-18

1991-10-15

Fuller, Benjamin R.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346140R, 358 75, B41J 2145, B41J 221

Patent

active

050578529

ABSTRACT:
Apparatus and method of producing image edge enhancement in four-color printers. The true black color is aligned for printing between the cyan, magenta, and yellow colors. When a black edge is desired, process black and true black are both used to produce the pixels along the edge. Because the process and true black pixels are interleaved with each other along the edge, the effective resolution is doubled and the sharpness is enhanced along the edge.

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patent: 4748453 (1988-05-01), Lin et al.
patent: 4809016 (1989-02-01), Padalino
patent: 4809021 (1989-02-01), Check et al.
patent: 4855752 (1989-08-01), Bergstedt

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