Method for controlling peel position in a printer

Details Method for controlling peel position in a printer Method for controlling peel position in a printer

2011-07-05

2011-07-05

Tran, Huan H (Department: 2861)

Incremental printing of symbolic information

Thermal marking apparatus or processes

Record receiver and transfer medium feeding or driving means

C400S248000

Reexamination Certificate

active

07973815

ABSTRACT:
A method for maintaining a peel location and for peeling a layer of media from a surface in a thermal printer. An optical probe, that includes a light source and a photodetector, transmits light from the optical probe toward a first web. The web reflects a portion of the transmitted light onto the photodetector, which then outputs an electrical signal which is compared with a preselected signal level and the difference between them provides an indication as to how much adjustment the peel location requires. Adjusting the peel location may comprise changing environmental characteristics of the first web or the second web (surface) or adjusting a tension of the first or second web. The difference between the measured electrical signal levels is related to a physical distance of the first web from the desired peel location.

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