Image processing device with dot diameter control

Details Image processing device with dot diameter control Image processing device with dot diameter control

1996-02-02

1998-06-30

Reinhart, Mark J.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

348298, 347131, B41J 245

Patent

active

057741670

ABSTRACT:
When binary image data is outputted from a FIFO buffer, a first black pixel counting circuit counts black pixels in a 3.times.3 matrix having a target pixel at its center to produce a count value BK2. Similarly, a second black pixel counting circuit counts black pixels in a 17.times.9 matrix to produce a count value BK1. Based on the count values BK1 and BK2, a value indicating the dot diameter is outputted from the output value table while a look-up table and the output value table are sequentially referred to. Setting is so made that the dot diameter becomes smaller as the count values BK1 and BK2 decrease.

REFERENCES:
patent: 5054099 (1991-10-01), Wakabayashi et al.
patent: 5075780 (1991-12-01), Shibahara
patent: 5467422 (1995-11-01), Itihara et al.
patent: 5473440 (1995-12-01), Haneda et al.
patent: 5486927 (1996-01-01), Koizumi et al.

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