Canon 1730, Service Manual

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Troubleshooting > Troubleshooting items > Image Failure > Image smear/toner bleed/condensation
Troubleshooting > Troubleshooting items > Image Failure > Image smear/toner bleed/condensation
[Cause]
• Pre-transfer Guide: The leading edge or trailing edge of paper touches the toner adhered to
the Pre-transfer Upper Guide.
• Fixing Inlet Guide: The leading edge or trailing edge of paper touches the toner adhered to
the Fixing Inlet Upper Guide.
[Condition]
When a high print chart, such as halftone or black, is continuously fed.
[Field Remedy]
Clean the toner-adhered Guide with lint-free paper.
■
Poor transfer of the image, hollow character
[Location]
Transfer Roller (roller circumference: 50mm)
[Cause]
• Because of insufficient transfer output due to highly-resistive paper caused by reduced
moisture content in paper by having the paper left untouched in a low humidity environment
• Because of insufficient transfer output due to highly-resistive paper caused by increased
moisture content in paper by having the paper left untouched in a high humidity
environment
F-6-8
F-6-9
[Condition]
• Paper left untouched in a low humidity environment
• Paper left untouched in a high humidity environment
[Field Remedy]
• User mode > Cleaning/Adjustment > Special Mode M; select "Strong" or "Weak"
■ Image smear/toner bleed/condensation
[Location]
Photosensitive Drum (circumference:94mm)
[Cause]
Discharge products generated from the Charging Roller adhere to the Drum, attract water
molecules and cause low resistance, which loses the ability to create the desired latent
image, resulting in bleed text image.
[Condition]
The first operation in the day under a high temperature and high humidity environment
[Field Remedy]
• User mode > Cleaning/Adjustment > Special Mode F; select "MODE1", "MODE2" or
"MODE3"
• Install an option Drum Heater
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