8.3 MOUNTING A ROLL HOLDER FOR
HEAD SENSITIVE PAPER
Heat sensitive
paper roll
Printer
Design the roll holder to the following
specifications:
Paper inlet
1) No sideways deviation between holder and
inlet.
2) Less than 2 mm between holder and the
sides of the roll.
3) The holder does not touch the sides of the
roll.
Roll holder
4) The horizontal axis of the roll in the holder
is parallel with the inlet(see Figure 8-8).
Example of improper design:
•
Roll without core
1) The roll rolls easily.
2) The roll remains securely in the holder.
Design conditions:
The paper feed tension is expressed as “X
N or more” in the specifications. Since this
is a specification for the printer feed, design
the roll holder so that the paper tension is
“X N or less”.
Figure 8-8 Mounting a Roll Holder for Heat
Sensitive paper
Printer
Printer
σ
Paper inlet
Paper inlet
θ
Paper roll
Paper roll
Printer
Heat sensitive
paper roll
Paper inlet
Roll paper sideway guide
Paper roll
length support
Figure 8-9 Roll without Core
8-5
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