Rice Lake Star SP298 Series Programmers Manual - Manual (Page 64)

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The paper position when the condition of the TOF or BOF sensor changes due
to the status is different to that of the TM-295.
Since the position of the BOF sensor is especially different, whereas the BOF
sensor reports “no paper” at 27.3mm from the bottom of the paper with the TM-
295, the BOF sensor reports “no paper” at approximately 38mm from the
bottom of the paper with the SP298. Therefore, when the BOF “no paper”
sensor is effective, the BOF sensor “no paper” is reported quicker than with the
TM-295 and it may not be possible to print in the same position at the bottom
of the same form.
For this reason, by controlling the printing so that it does not stop until
approximately 27.3mm from the bottom of the paper even if the paper has
passed the BOF sensor at the 38.1mm position, this difference is compensated.
However, due to the differences in the paper feed pitch (star = n/72”, TM-295 =
n/60”), the emulation is not perfect.
With the TM-295, by adjusting the mechanical stopper position, the paper top
position can be changed between 0 to 10mm. However, since the mechanical
stopper position is fixed with the SP298, if the TM-295 mechanical stopper
position is changed and the printing results are compared, they may be different.