公开(公告)号：WO1992002898A1

公开(公告)日：1992-02-20

申请号：PCT/US1991005270

申请日：1991-07-24

Applicant: ELITE HIGH TECHNOLOGY, INC.

Inventor： ELITE HIGH TECHNOLOGY, INC. ,  WU, Kuo, H. ,  SCHNEIDER, Roger ,  ISHIGO, Kelvin, K.

IPC: G06K15/00

CPC classification number: G06K15/00 ,  G06K2215/0005 ,  G06K2215/0008 ,  G06K2215/0025

Abstract: A high speed, low cost real time graphic image printing system (10) includes a host data processing system (12), a laser printer (14) having a plug connector (56) for receiving a font cartridge (36) storing information defining an image of a printable character, and a cartridge (36) pluggably connected to the font cartridge plug connector (56). A first communication path (16) carries print commands from the host (12) to the printer (14) while a second communication path (18) carries image defining information between the host (12) and the data store (42). In operation the host (12) writes information defining a portion of an image to be printed into a portion of the data store (42) corresponding to a selected character and then commands the printing of the selected character. A ping-pong double buffer (70) arrangement allows the host (12) to write a next image portion while information defining a current image portion is read by the printer (10) to form a print image.