2.1.6.4 Transfer Section |
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The transfer roller transfers the toner image on the surface of the PC |
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drum onto the paper. A positive transfer bias is applied to the transfer |
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PC Drum |
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roller so that the toner (reduced negative voltage) on the surface of the |
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PC drum sticks to the paper. |
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The transfer bias is transmitted via; HV transformer (high voltage unit) → |
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contact plate → compression spring → transfer roller bushing → transfer |
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roller. |
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For constant image quality, the engine controller manages changes |
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voltage (around 20 μA) depending on the paper type and color duty |
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(black and white). |
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The paper then passes through the needle pole and the static electricity |
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| Transfer Guide | |
remaining on the paper is discharged to the ground. This enables |
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forcible separation of the paper form the PC drum. |
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After the transfer roller, the paper passes discharging pole. The |
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| PC Drum | ||
discharging pole prevents the toner from moving due to discharge |
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electricity produced while paper is separated from the transfer roller. |
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Transfer Roller
Figure 2-25. Transfer Section Mechanism
Operating Principles | Printer Mechanism Operating Principles | 71 |
