Fixing Block; Cleaning Block - Canon Color imageCLASS MF9170c Service Manual

Chapter 7

7.1.6 Fixing Block

imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c
In this block, a toner image is fixed on paper.
The toner image transferred to the paper can be smeared easily by hands since it is only attracted to the paper by a static electricity.
When pressure and heat are applied to the paper and toner image, the toner image melts with mixed colors and becomes a permanent printed image (on-demand
fixing).
Step 9: Fixing
When the paper with toner is transported between the fixing sleeve and the pressure roller, the toner is melted by heat and fixed to the paper by pressure.
For the fixing heater, the machine uses a ceramic heater with lower heat, which warms up quickly. The feature of this heater is that the wait time is short and thus
energy saving is realized.

7.1.7 Cleaning Block

imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c
In this block, the residual toner on the photosensitive drum is removed.
When transfer is performed, a part of the toner image on the photosensitive drum is not sometimes transferred and remains on the drum. This remaining toner is
called residual toner.
Removing the residual toner keeps a clear image in the subsequent print operation.
Step 10: Drum cleaning
The residual toner on the photosensitive drum is scraped by the cleaner blade, and then collected into the waste toner container.
7-6
Fixing heater
Fixing sleeve
Waste toner container
Cleaner blade
Pressure roller
Paper
Toner
F-7-11
residual toner
Photosensitive
drum
F-7-12
0019-5017
0019-5018