Invention Grant
US07657198B2 Methods for transfering toner in direct transfer image forming 有权
在直接转印成像中转印调色剂的方法

Methods for transfering toner in direct transfer image forming
Abstract:
The present application is directed to methods of controlling the transfer voltage in a transfer nip formed between the photoconductive member and the transfer member. The methods offset the effects of large transfer current spikes caused when a media sheet enters and exits the transfer nip. The control may include either ramping up or ramping down the transfer voltage. The ramped transfer voltage may include a series of alternating positive and negative steps that generally trend to ramp up or down. The size of the steps may further be adjusted to provide a smooth transition.
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