Transfer Power Pack - Ricoh B132 Service Manual

IMAGE TRANSFER AND PAPER TRANSFER

6.12.4 TRANSFER POWER PACK

[B]
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[C]
[D]
[A]: Transfer power pack
[B]: ITB transfer roller terminals
[C]: Image transfer rollers
[D]: ITB
[E]: ITB bias roller terminal
[F]: ITB bias roller
To transfer the images from drum to ITB:
• The transfer power pack [A] supplies a positive charge (1 kV 24 to 30 µA) to the
image transfer roller terminals [B]
• The four terminals charge the image transfer rollers [C]
transfer the charge to the back of the ITB [D].
• The positively charged ITB pulls the negatively charged toner off the drums and
onto the ITB.
To transfer the images from ITB to paper:
• The transfer power pack [A] supplies a negative charge to the ITB bias roller
terminal [E].
• The terminal applies the negative charge to the ITB bias roller [F].
• The high negative charge of the ITB bias roller is applied to the back of the ITB.
This repulses the low negative charge of the toner, forcing the images onto the
paper.
NOTE
• The transfer power pack supplies the positive charge for image transfer to the
ITB and the negative charge for image transfer from the ITB to paper.
• A temperature/humidity sensor under the waste toner bottle motor controls the
amount of the charge applied to the image transfer and ITB bias rollers.
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