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TRANSFER BELT UNIT CF5001 Ver.1.0 Sep. 2003
2-32
II UNIT EXPLANATION
5.2.3 1st transfer control
Toner on the drum is transferred onto the transfer belt side by a bias value applied on the 1st transfer roller
provided inside the transfer belt.
The DC bias value of the 1st transfer roller changes according to the following conditions:
• Process speed
• Black-and-white mode or color mode
• Humidity
• No. of use counts of the 1st transfer roller
For each operation timing of the 2nd transfer control, see "Image formation timing" in "3. Drum unit."
5.2.4 2nd transfer control
Toner on the transfer belt is transferred onto the paper, which is pressed between the transfer belt and the
2nd transfer roller /L on the ADU side, is being sent.
The 2nd transfer roller /U is positioned inside the transfer belt directory above the 2nd transfer roller /L, and
applied with a DC bias value according to the following conditions:
• Process speed
• Black-and-white mode or color mode
• Humidity
• Type of copy paper
• Front or rear side of paper
For each operation timing of the 2nd transfer control, see "Image formation timing" in "3. Drum unit."