Graphic image printing system and method

Details Graphic image printing system and method Graphic image printing system and method

1990-08-06

1992-09-22

Evans, Arthur G.

395110, G06D 1500

Patent

active

051504561

ABSTRACT:
A high speed, low cost real time graphic image printing system includes a host data processing system, a laser printer having a plug connector for receiving a font cartridge storing information defining an image of a printable character, and a cartridge pluggably connected to the font cartridge plug connector. A first communication path carries print commands from the host to the printer while a second communication path carries image defining information between the host and the data store. In operation the host writes information defining a portion of an image to be printed into a portion of the data store corresponding to a selected character and then commands the printing of the selected character. A ping-pong double buffer arrangement allows the host to write a next image portion while information defining a current image portion is read by the printer to form a print image.

REFERENCES:
patent: 4660999 (1987-04-01), Tsuneki
patent: 4939670 (1990-07-01), Freiman et al.
patent: 4954968 (1990-09-01), Yamaguchi et al.
LaserJet Series II Printer Technical Reference Manual, Hewlett-Packard, First Edition, May 1987, chapters 1-11.

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