Ricoh A151, Field Service Manual

Page: 297 / 397

12. PAPER FEED
12.1 PAPER LENGTH DETECTION (Paper Feed Station)
The paper length is measured by the registration sensor while paper is fed
past the registration sensor. The determined paper size is stored in memory.
This is performed during the first copy of a copy job.
As shown by the following table, the CPU determines the size of the paper in
the paper tray based on the paper length measured by the registration
sensor.
Paper length (mm) Paper size
364 B4
356 10" x 14"
330 8
1/2
" x 13"
297 A4R
279 8
1/2
" x 11"
267 8" x 10
1/2
"
257 B5R
254 8" x 10"
216 5
1/2
" x 8
1/2
"
210 A5R
Since the CPU does not have the paper length in memory for the first copy
cycle, the CPU controls the machine for the maximum paper size of B4 (257
mm x 364 mm).
From the second copy cycle on, the CPU controls the machine for the correct
paper size based on the data stored during the first paper cycle.
Whenever the by-pass feed table is used, the CPU determines the paper size
to be B4 (257 mm x 364 mm).
A202/
A203
Co
p
ier
PAPER FEED
SM 8-19 A202/A203