Facsimile and static presentation processing – Static presentation processing – Detail of medium positioning
Patent
1997-12-12
2000-06-06
Powell, Mark R.
Facsimile and static presentation processing
Static presentation processing
Detail of medium positioning
358 114, 358 101, 399 12, 399 13, 399 88, 399 89, 399 90, G03G 1500
Patent
active
060725850
ABSTRACT:
An improved printer is provided which includes a print engine control program that minimizes the power consumption of the paper-handling devices to allow for a smaller DC power supply. Some of the paper-handling devices are input paper trays, output paper stackers, and a duplexer, which all preferably contain a microcontroller and an individual electric motor drive. The base printer also contains a microcontroller in the print engine that controls the printer's mechanisms and various subassemblies that are used in the laser electrophotographic printing process. To maintain control of the entire paper path, the print engine sends commands to the paper-handling devices, and these devices send responses to these commands. Most of the printer's paper-handling devices receive their electrical power entirely from the base printer, which is supplied as a DC voltage. The print engine avoids the concurrent running of subsystems in cases where the functionality of the printer is not compromised. These subsystems are instead run sequentially, so their power demands do not overlap, thereby providing a reduced overall power consumption requirement that is being supplied by the printer's DC power supply. Another aspect of the present invention allows the printer to command either all or only certain individual paper-handling devices to place themselves into a "power saver" mode.
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Dutton Todd Alan
Hines Jeffrey Thomas
Langer David Brian
Parish Steven Wayne
Wright Phillip Byron
Gribbell, Esq Frederick H.
Lambert D. Brent
Lexmark International Inc.
Powell Mark R.
Sealey Lance W.
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