Decurl Unit
De-curling mechanism
Pro C9500 is installed with three decurler units before the paper exit.
To de-curl the sheets, the direction of the curl (face or back) observed on the sheets and the de-curl
intensity need to be specified in Advanced Settings. The upper or lower metal roller presses and delivers
the sheet to the upper or lower paper path according to the settings.
• A. Decurler pressure roller 3…Presses the paper from below and removes curl from paper which is
curled face up.
• B. Decurler unit pressure roller 1…Presses the paper, which is in straight-through transport from
above and removes curl from paper which is curled face down.
• C. Decurler pressure roller 2…Presses the paper, which is in duplex transport, from above and
removes curl from paper which is curled face down.
The speed in which the paper passes through the decurl unit can be adjusted.
If the speed is too fast, toner may adhere to the edges of the sheets, and if too slow, wrinkles/creases
may occur. Set to an optimal speed according to the stock.
1. The de-curl pressure motor [C] rotates the de-curler pressure cam [B] and the de-curl pressure roller
[A] presses the sheet.
2. After the sheet passes through, the motor rotates the cam in the opposite direction for the pressure
roller to release the nip.
2. Printing Process
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