Image processing apparatus

Details Image processing apparatus Image processing apparatus

1991-06-19

1994-05-24

Coles, Sr., Edward L.

Facsimile and static presentation processing

Natural color facsimile

Color correction

358462, 358464, 358465, 358467, 358470, 358527, 358528, 358524, 358529, H04N 146

Patent

active

053153820

ABSTRACT:
It is determined whether an object pixel in entered image data resides on (a) part of a black character or line, (b) not on part of a black character or line but in close proximity thereto, (c) neither part of nor in close proximity to a black character or line. When it is determined that (a) holds, the object pixel is recorded using dark black ink only. When it is determined that (b) holds, a pixel comprising various color components is recorded using ink whose density is lower that that of ink having a designated density. When it is determined that (c) holds, namely that the object pixel is remote from a black character or line, the object pixel is recorded using the ink of the designated density.

REFERENCES:
patent: 3975740 (1976-08-01), Distler et al.
patent: 4538160 (1985-08-01), Uchiyama
patent: 4723129 (1988-02-01), Endo et al.
patent: 4740796 (1988-04-01), Endo et al.
patent: 4958219 (1990-09-01), Kadowaki
patent: 5008742 (1991-04-01), Shigaki et al.
patent: 5031034 (1991-07-01), Shimizu et al.
patent: 5068746 (1991-11-01), Ohsawa et al.

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