Image forming apparatus

Details Image forming apparatus Image forming apparatus

2010-01-15

2011-10-18

Joerger, Kaitlin (Department: 3653)

Sheet feeding or delivering

Delivering

With transfer means between conveyor and receiver

C271S003140, C271S003150, C271S003170, C271S003180, C271S301000, C271S270000

Reexamination Certificate

active

08038144

ABSTRACT:
In an image forming apparatus, a sheet reversing mechanism is configured to take over and transfer, at a transfer speed Vr, a print sheet with an image already formed on one side being transferred at the transfer speed Vr from a first transfer mechanism, to stop the print sheet once, then to start transfer of the print sheet in an opposite direction, and to pass the print sheet to a second transfer mechanism at the transfer speed Vr. The first and second transfer mechanisms are located on upstream and downstream of a switchback reverse path for reversing print sheets respectively Upon lapse of a time T1after detection of the print sheet by a print sheet detection unit, a transfer control unit drives the sheet reversing mechanism to start acceleration from a stopped state to the transfer speed Vr, the time T1calculated based on the transfer speed Vr.

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