Image forming apparatus capable of producing high quality halfto

Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light

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358298, 358458, H04N 121

Patent

active

055659071

ABSTRACT:
An image forming apparatus capable of producing a high quality halftone image stably and rendering faithful tonality. For a bilevel image, the apparatus smooths the boundary between black and white. For a multilevel image, the apparatus obviates solitary dots for thereby causing dots to concentrate. As a result, a bilevel image and a multilevel image are provided with a clear boundary.

REFERENCES:
patent: 4903138 (1990-02-01), Aragaki
patent: 5450208 (1995-09-01), Murata

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