Invention Grant
- Patent Title: Methods for transfering toner in direct transfer image forming
- Patent Title (中): 在直接转印成像中转印调色剂的方法
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Application No.: US11566831Application Date: 2006-12-05
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Publication No.: US07657198B2Publication Date: 2010-02-02
- Inventor: Ryan David Brockman , Gregory Lawrence Ream , Pramod K. Sharma
- Applicant: Ryan David Brockman , Gregory Lawrence Ream , Pramod K. Sharma
- Applicant Address: US KY Lexington
- Assignee: Lexmark International, Inc.
- Current Assignee: Lexmark International, Inc.
- Current Assignee Address: US KY Lexington
- Main IPC: G03G15/16
- IPC: G03G15/16

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.
Public/Granted literature
- US20080131156A1 Methods For Transfering Toner In Direct Transfer Image Forming Public/Granted day:2008-06-05
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