Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1978-04-24
1981-07-14
Faber, Alan
Facsimile and static presentation processing
Facsimile
Recording apparatus
358267, 358296, 358300, 371 57, 179 2DP, 178 23A, H04N 136
Patent
active
042790026
ABSTRACT:
An adapter is provided as an interface between a raster output scanning printer and an electronic image processor which formats digital information for use by the printer in creating printed images. The adapter accepts digital pulses through a structured array of communication lines from the electronic image processor. Each line is dedicated to the provision of certain video or control information which may be utilized by any one of a number of different raster output scanning printers. The electronic image processor is indifferent to the identity of the type of printer to which information is provided as the adapter serves to manipulate the data provided by the electronic image processor in a manner suitable to control the particular printer employed. The adapter is sensitive to the scanning cycles of the printer and accommodates deviations in scan time to increase or decrease the rate of provision of video information in accordance with fluctuations in printer motor speed. A phase lock loop with the printer motor is provided for this purpose. The adapter also multiplexes status information of operating conditions generated internally and from the printer, and serially sends this status information to the electronic image processor.
REFERENCES:
patent: 3465352 (1969-09-01), Carlson
patent: 3605091 (1971-09-01), Tong
patent: 3820123 (1974-06-01), Ammann
patent: 3872446 (1975-03-01), Chambers
patent: 3889057 (1975-06-01), Perreault
patent: 3898627 (1975-08-01), Hooker
patent: 3953859 (1976-04-01), Locke
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patent: 4000371 (1976-12-01), Ogawa
patent: 4032978 (1977-06-01), Wong
patent: 4070648 (1978-01-01), Mergenthaler
patent: 4079458 (1978-03-01), Rider
Carothers, Jr. W. Douglas
Faber Alan
Smith Barry Paul
Xerox Corporation
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