Image forming apparatus

Details Image forming apparatus Image forming apparatus

2006-03-14

2008-08-05

Gleitz, Ryan (Department: 2852)

Electrophotography

Control of electrophotography process

Control of fixing

C399S044000

Reexamination Certificate

active

07409172

ABSTRACT:
An image forming apparatus includes a plurality of loop detecting sensors which detect various levels of loops formed on a recording material; and a controlling device which selects a specific one out of the loop sensors in accordance with information on the recording material, and then, switches a conveyance speed of a fixing roller pair in response to a detection signal output from the specific sensor, so as to control in such a manner as to keep the loop of the recording material within a constant range, the controlling device selecting the loop detecting sensor for detecting a loop of a level in accordance with the information on the recording material, so as to perform a loop keeping control for the recording material in response to the detection signal output from the selected loop detecting sensor.

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Official Communication/Search Report, issued by the European Patent Office on Nov. 24, 2006, in European Patent Application No. 06006021.7.

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