Canon 1730, Service Manual

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Technical Explanation > Image Formation System > Controls > Waste Toner Box
Technical Explanation > Image Formation System > Controls > Waste Toner Box
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Chang in bias by user mode (Special Mode)
Special mode settings in user mode include a mode to change the density or improve the
separation performance by changing the bias. The following describes the mode which
executes bias control.
User mode Overview Setting value Control details
Special Mode M
(Density adjustment)
To change the density
by chancing the value of
transfer bias.
Standard
(Default)
Normal control
Low The density is lightened by
weakening the bias.
High The density is darkened by
strengthening the bias.
Special Mode O
(Separation priority
mode)
To control the separation
bias in the case of frequent
jams on the 2nd side when
using backside of printed
paper, etc.
Off
(Default)
Normal control
On Separation bias at paper feed is
strengthened. Also, the leading
edge margin is set to 4.5mm.
Special Mode E
(Background density
adjustment mode)
To darken the density
of background such as
watermark.
Off
(Default)
Normal control
On The background density is
darkened by strengthening the
transfer bias.
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Waste Toner Box
● Overview
The toner, which was not transferred to the paper but attached on the Photosensitive Drum, is
removed by the Cleaning Blade that is in contact with the Photosensitive Drum, and then fed
into the Waste Toner Box by the Waste Toner Feed Screw.
There is a screw for feeding toner in the Waste Toner Box. This screw is driven by the Waste
Toner Motor and engaged with movement of the Hopper Motor.
Note that there is no mechanism to detect presence of a Waste Toner Box with this machine.
The Front Cover cannot be closed unless the Waste Toner Box is mechanically installed;
therefore, the machine is not driven without having the Waste Toner Box installed
Waste Toner
Full Sensor (PS2)
Waste Toner Feed Screw
Toner
Waste Toner Box
PS2 Waste toner full level sensor
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