Recording apparatus for carrying out high-density dot printing

Details Recording apparatus for carrying out high-density dot printing Recording apparatus for carrying out high-density dot printing

1994-04-08

1996-12-10

Fuller, Benjamin R.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347237, B41J 247, B41J 2435

Patent

active

055835589

ABSTRACT:
A recording apparatus has an array of recording elements arranged in a main scanning direction and having a predetermined dot pattern, and forms a dot image on a recording medium located opposite to the recording elements. Reception circuit receives image data of a predetermined dot density. A plurality of line buffers store one dot line of data of interest as a printing target among the image data and aligned in the main scanning direction, and plural dot lines of data preceding and following the one dot line with respect to a sub-scanning direction. A compensation data generating circuit converts the one dot line of data of interest as the printing target into N lines of compensation data, divided by N with respect to the sub-scanning direction, based on the plural dot lines of data preceding and following the one dot line. A control circuit controls the time for activating the recording elements based on the compensation data. Recording will therefore be accomplished with a dot recording density in the sub-scanning direction different from the dot density of the image data.

REFERENCES:
patent: 4780731 (1988-10-01), Creutzmann
Patent Abstracts of Japan, vol. 15, No. 21 (M-1070), Jan. 17, 1991 & JP-A-02 266 966 (Matsushita Electric Ind. Co., Ltd.), Oct. 31, 1990.
Patent Abstracts of Japan, vol. 16, No. 546 (E-1291), Nov. 16, 1992 & JP-A-04 207 664 (Matsushita Electric Ind. Co., Ltd.), Jul. 29, 1992.

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