IMAGE FORMING DEVICE

PROBLEM TO BE SOLVED: To provide an image forming device enabling dirt having a paper powder component ratio higher than a toner component ratio attached on a pressing member to be removed by a recording material.SOLUTION: An image forming device has a cleaning mode to remove dirt on a pressing memb...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: AKAMATSU KOSUKE, TANAKA MASASHI, TETSUNO SHUICHI, OGAWA KENICHI, SUGA SHOGO
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide an image forming device enabling dirt having a paper powder component ratio higher than a toner component ratio attached on a pressing member to be removed by a recording material.SOLUTION: An image forming device has a cleaning mode to remove dirt on a pressing member. In the cleaning mode, a fixing rotor 21 is rotated for a predetermined length of time and after that a recording material S is held and transported by a nip part N with following conditional equations satisfied: Th≤Tf3, Tf2≤Tp≤Tf3; where Th and Tp are surface temperatures of the fixing rotor 21 and the pressing member 22 respectively based on a temperature detected by a temperature detecting member 26 which detects a temperature of a pressing member 23; and Tf2 and Tf3 are a deformation end point and an outflow starting point of a toner respectively in an unfixed toner image T measured by a flow tester.