Canon LBP351 Series, Руководство по обслуживанию

Страница: 35 / 191

Paper Width Sensor 1
(PS106)
Paper Width Sensor 2
(PS108)
Detection result Paper size
ON ON Paper width: Wider than 198 mm A4, LTR, LGL
OFF OFF Paper width: Shorter than 198
mm Executive, B5, A6
OFF ON Paper position: Right side -
ON OFF Paper position: Right side -
■ Paper Length Detection
The Registration Sensor (PS103) measures the paper length to prevent soiling of the Transfer Roller.
Furthermore, the paper size set by the Size Plate is detected using the Cassette Size Switch (SW102) in the cassette.
Both cassette size and actual length are detected in case the user sets the Size Plate incorrectly.
There is no way to detect the size in the Multi-purpose Tray.
The DC Controller detects the actual length of the paper by measuring the time when paper is fed using the Registration Sensor
(PS103).
If the size determined by the aforementioned method does not match the size detected by the Cassette Size Switch, "Check
Paper Size" is displayed on the Control Panel.
If the detected paper is detected to be shorter than the specified size, image masking is performed from that point in time to
prevent toner soiling of the Transfer Roller.
■ Feed Speed Control
The printer changes the feed speed for each paper size to prevent fixing failures.
The DC Controller changes the paper feed speed (between 1/1 speed and 1/2 speed) for each paper size to prevent the
temperature rise at the edge of the Fixing Assembly.
Paper size >Multi-purpose Tray pickup/Cassette pickup
1/1 speed 1/2 speed
LGL Yes Yes
LTR Yes Yes
A4 Yes Yes
EXE No Yes
B5 No Yes
A5 No Yes
Universal No Yes
Envelope No Yes *1
*1: Envelope is supported only at paper pickup from the Multi-purpose Tray.
■ Envelope Feeder (Option)
● Overview
The Envelope Feeder is a pickup option that is installed in the Multi-purpose Tray.
Using the Envelope Feeder enables the printing of a large number of envelopes at a time.
MP-Tray Envelope Feeder
Envelope 10 Sheets 75 Sheets
● Parts Configuration
The Envelope Feeder consists of the following electrical components:
2. Technical Explanation (Device)
28