Abstract: A modular peripheral error warning device for use with printers having a CENTRONICS parallel port. The peripheral error warning device monitors various voltages of connecting wires that interface with the computer and the printer and includes an interface box, an alarm box and a power supply. Activation of an alarm, such as a buzzer or LED, will occur if the monitored voltage corresponds to printer error, such as a paper jam. Correction of the printer error results in deactivation of the alarm.
Type:
Grant
Filed:
May 30, 1996
Date of Patent:
February 10, 1998
Assignee:
QMS, Inc.
Inventors:
Rodney W. Johnson, James A. Stokes, III
Abstract: A method and apparatus for cleaning pickup and feed rolls of machines such as printers, copiers, facsimile machines and the like. The method utilizes a roll cleaner which includes an absorbent layer and cleaning solution provided within the absorbent layer. The roll cleaner is sufficiently thick to prevent the roll cleaner from feeding through the machine. The pickup and feed rolls will spin against the absorbent layer for cleaning. The roll cleaner may be stored in a resealable cellophane bag.
Abstract: A printer and method of operating same which receives print jobs from a host computer encoded in any one of several printer control languages. The printer has the capability of interpreting print jobs in each printer control language. The printer samples a portion of each print job and, using a resident algorithm and data sets obtained by statistical techniques, analyzes the sampled portion of the print job to identify the printer control language in which the print job is encoded.
© 2026 Justia
