Appeal No. 2001-1209
Application No. 09/106,281
The claimed invention relates to a sheet carrier apparatus
including a platen roller with a circumferential surface made of
elastic material, the platen roller being rotated to convey a
sheet, such as a stencil sheet, between the platen roller and a
thermal head. Further provided is a processor which regulates
the rotational speed of the platen roller based on a signal from
a temperature sensor which detects the temperature of the platen
roller, thereby transferring the sheet at a constant speed
regardless of the temperature of the platen roller.
Claim 2 is illustrative of the invention and reads as
follows:
2. A sheet carrier apparatus for conveying a sheet,
comprising:
a thermal head,
a platen roller having a cylindrical
circumferential surface made of an elastic material and
pressed against the thermal head, said platen roller
being rotated to convey said sheet between said platen
roller and said thermal head,
a temperature sensor for detecting a temperature
of said platen roller,
processing means electrically connected to the
temperature sensor for setting a rotational speed of
said platen roller based on a detection signal from
said temperature sensor, and
2
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