Photocopying – Contact printing – Light boxes
Patent
1995-08-22
1996-05-28
Royer, William J.
Photocopying
Contact printing
Light boxes
355208, G03G 1500
Patent
active
055216749
ABSTRACT:
A system and method for controlling image transfer device operations through use of a medium marking material on the image transfer medium being printed. The medium marking material is coded on the paper and sensed by the transfer device to control operations. The medium marking material is visible and/or legible to an operator prior to printing, but becomes invisible during or after printing operations. Responsive to the marking material sensed, a marking signal is produced and translated to a command signal recognized by the printer for controlling printer operations. Heat generated by the printing process causes the marking material to become virtually indistinguishable from the paper during/after printer operations.
REFERENCES:
patent: 4876571 (1989-10-01), Nakamura et al.
"Apple Joins The Fray With New Color LaserWriter 12/600 PS", Hard Copy Observer, vol. V, No. 7, Jul. 1995, p. 51.
Guillory Douglas M.
Lloyd Michael B.
Hewlett--Packard Company
Royer William J.
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