Ricoh Pro C9210 Руководство по эксплуатации - Страница 13
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Belt-to-Paper Transfer
Belt-to-Paper Transfer
Applied voltage
The paper transfer roller features AC transfer technology.
Negatively charged toner image (-) on the ITB [2] is transferred to the paper by applying a negative
bias (-) to the paper transfer bias roller [1].
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2
Following are the three types of negative bias applied to the paper transfer bias roller:
• DC bias: For all media types
• AC bias (Standard): For media other than metallic pearl and textured paper
• AC bias (Textured): For textured paper
* At low temperature and humidity, only DC bias is applied.
Bias is adjustable by print mode because the optimum bias level is dependent on the amount of toner
transfer.
(Bias is higher for FC than for BW due to the greater amount of transferred toner.)
By nature of AC, in which the current flows in an alternating up-and-down movement, toner particles
sync with this movement. Toner transferred to the media is pulled back to the ITB to gain further
transferability, enabling toner particles to fall into the indentations on rough surfaced media.
DZH307
Belt-to-Paper Transfer
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