Canon iR1200 Series Service Manual page 114

Chapter 3
Period
STBY
(standby)
INTR
(initial
rotation)
PRINT
(print)
LSTR
(last
rotation)
3-10
Definition Purpose
After the end of WAIT, The machine is ready
unit the Start key is for a print command.
pressed.
After a press on the The machine starts up
Start key, until the process conditions and
leading edge is picks up paper for
detected by the paper printing.
leading edge sensor.
From when the paper The DC controller PCB
leading edge sensor generates the BD0*
detects the leading signal, and the image
edge of paper to 0.5 sec processor PCB sends
after it detects the VD0* signal and VD0
trailing edge of paper. signal, thereby forming
a latent image on the
photosensitive drum
and turning it into a
toner image.
From when printing The drum surface is
ends until the main made free of potential
motor stops. and the transfer
charging roller is
cleaned.
Remarks
If a shift is from last rotation of
printing on LTR or larger, the
fixing heater is subjected to rest
heating temperature control for
5 sec.
The fixing heater is subjected
to temperature control (start-up
temperature control, paper
passage temperature control);
scanner rotation speed
adjustment and ATVC control
are executed.
After last rotation, the machine
shifts to standby to wait for a
print command, in response to
which it immediately shifts to
initial rotation.