Line printer

Details Line printer Line printer

1997-10-01

1999-08-10

Bennett, Christopher A.

Typewriting machines

Typing by other than type-face or type-die

Thermal

347184, B41J 236

Patent

active

059348119

ABSTRACT:
A line printer including a device for receiving gradation scale values of pixels for one line to be printed, and a plurality of tables for correcting a density variation caused by common resistance unevenness. The line printer further includes a device for arithmetically obtaining a number of printing elements to be operated for each gradation scale for printing from the gradation scale values of the pixels for one line received by the receiving device, and a device for retrieving an optimal table from the plurality of tables on the basis of the number of printing elements obtained by the arithmetic device.

REFERENCES:
patent: 5166701 (1992-11-01), Yamada
patent: 5232294 (1993-08-01), Inui
patent: 5242230 (1993-09-01), Arakawa
patent: 5327165 (1994-07-01), Elliot
patent: 5400059 (1995-03-01), Kwon
patent: 5795081 (1998-08-01), Miyaji

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