Canon FAX-L1000 - Manual (Page 191)

3-47
FAX-L1000 Chapter 3: Technical Reference
b-2) Recording paper jam detection configuration
Recording paper jams in the paper feed/eject section are detected by the photo-interrupter
type pre-feed sensor, top of page sensor, recording paper eject sensor 1 and 2, which is
equipped with an actuator arm.
The CPU assesses a delivery delay jam if the recording paper eject sensor 1 (PS501)
does not detect the leading edge of the paper within the specified period of time (T)
after the top of page sensor (PS103) detects the leading edge of the paper.
• For paper 200mm or more: T= about 3.2 sec.
• For paper less than 200mm: T= about 5.7 sec.
Recording paper eject jam
A “recording paper eject jam” means that the recording paper eject sensor cannot
detect the trailing edge even 3.0 to 6.0 seconds after the top of page sensor detects
the trailing edge.
NOTE
Recording paper jam detection processing
When a recording paper jam occurs, the main motor drive is stopped,
print operations are stopped, the error is displayed on the display, and
the
Rec. Paper lamp and the Error lamp blink red. Also, if the
printer cover is opened during recording paper feed, this is treated as a
recording paper jam.
“
REC. PAPER JAM ” is displayed on the display.
If the jam occurs during reception, the reception images are received
into memory reception starting from the page during which the
recording paper jam occurred, but if the jam occurs during copying,
the copy image data are erased.
b-3)Toner level detection/cartridge detection
The FX 6 toner cartridge has a toner sensor.
The circuit compares the output value of the developing AC bias and the output value (ANT)
from the antenna inside the cartridge, and outputs the toner detection signal.
The CPU detects the toner level and whether the cartridge is installed or not when the
developing AC bias is applied to the developing cylinder. The toner level is always detected
when the developing AC bias is applied, and the cartridge is detected only when the
developing AC bias is applied during the initial rotation.