Print control apparatus having line buffer

Details Print control apparatus having line buffer Print control apparatus having line buffer

1985-01-29

1986-11-18

Evans, A.

Boots, shoes, and leggings

346139R, 346154, 364523, B41B 2708

Patent

active

046239782

ABSTRACT:
According to a print control apparatus of a printer which has a line buffer, when one-line data transmitted from a host CPU includes a character and a figure, a print and line feed controller causes a character image generator to access a character pattern memory so as to write the readout a character image in the line buffer. The print and line feed controller causes a figure image generator to generate a figure image which is then ORed-written on the character image. As a result, one-line character and figure data can be printed with one scanning operation. Figure data parameters are stored in the parameter area in the internal memory. Every time printing of a page is performed in units of predetermined dot widths, the parameter corresponding to the figure image developed into the line buffer is deleted from the parameter area. The next parameter is then stored in the parameter area.

REFERENCES:
patent: 4542384 (1985-09-01), Tazaki

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