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Belt Cleaning Mechanism
Cleaning
Blade
Cleaning roller always in contact with the belt
Positive charge applied to the roller to attract
negatively charged toner
Cleaning roller cleaning blade: Counter blade
Describe this mechanism using the slide and the service manual.
The Mojito had a cam for side-to-side movement, but this model has no cam.
This gives better cleaning than the application of a blade to the transfer belt.
The charge for cleaning is applied even during the interval between sheets of copy
paper.
If the class asks why SP 2-964 is now a 'DFU' (not to be used in the field), explain
that if this SP is enabled, the rear sides of the paper is likely to get dirty.
In the SP5 and Mojito, SP2-964 allowed the transfer cleaning roller-cleaning
blade to be lubricated occasionally with toner to prevent it from peeling off its
bracket. This blade flipping problem only occurs rarely, so it is OK to DFU this
SP mode.
There is always a chance of this happening with a counter blade system.
235
Cleaning
Roller
Service manual, section 6.10.7
235
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