公开(公告)号：WO1992002899A1

公开(公告)日：1992-02-20

申请号：PCT/US1991005273

申请日：1991-07-24

Applicant: ELITE HIGH TECHNOLOGY

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

IPC: G06K15/00

CPC classification number: G06K15/00 ,  G06F3/1295 ,  G06F3/1297 ,  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 printing (14) having a font cartridge port (56), a font cartridge (36) that is writable in real time by the host (12) to facilitate high speed printing of graphic images and an expander cartridge (52). The expander cartridge (52) plugs into the printer font cartridge port and in turn provides ports for pluggably receiving both a read only font cartridge (55) and a real time font cartridge (36) that is writable by the host. The expander cartridge (52) serves as a multiplexer to couple a selected one of the two font cartridges (36, 55) to the printer (14).

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.