Image forming apparatus

Details Image forming apparatus Image forming apparatus

1988-08-09

1990-05-29

Evans, Arthur G.

Boots, shoes, and leggings

346154, G01D 1500

Patent

active

049300873

ABSTRACT:
An image forming apparatus has a printing side and a host side. Status signals are transmitted from the printing side to the host side and, according to the status signals, commands are transmitted from the host side to the printing side to execute printing operations. One exclusive line is added to status lines and used to inform the host side of changes in urgent statuses of the printing side.
According to another aspect, an image forming apparatus has a printing side and a host side that transmits various data signals to the printing side. The printing side outputs a video clock signal whose frequencey changes in proportion to a recording density of the printing side. According to the video clock signal, the host side transmits a video data signal to the printing side.

REFERENCES:
patent: 4779106 (1988-10-01), Mills

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