FIXING APPARATUS AND IMAGE FORMING APPARATUS

PROBLEM TO BE SOLVED: To provide a fixing apparatus configured to prevent a crack or damage to a belt end which is likely to occur when paper-jam is eliminated.SOLUTION: When a pressure roller 6B1 for pressing a flexible fixing belt 6A1 arranged on a housing fixing side 100A to a nip forming member...

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Main Authors TAMAKI SHUNTARO, YOSHINAGA HIROSHI, ARAI YUJI, SAITO KAZUYA, HATTORI YOSHIO
Format Patent
LanguageEnglish
Japanese
Published 20.04.2015
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
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Summary:PROBLEM TO BE SOLVED: To provide a fixing apparatus configured to prevent a crack or damage to a belt end which is likely to occur when paper-jam is eliminated.SOLUTION: When a pressure roller 6B1 for pressing a flexible fixing belt 6A1 arranged on a housing fixing side 100A to a nip forming member 6A3 is arranged on a housing open/close side 100B and the housing open/close side 100B is opened when paper-jam is eliminated, positioning of a belt end is adjusted properly when pressure of the pressure roller 6B1 is released, by a movable positioning mechanism 70 having a guide member 71 which enters a gap between a step different section 50A of a support flange member 50 for supporting a belt support member 40 as a support member of the fixing belt 6A1, and a ring member 60 for preventing collision between the step difference section 50A and the belt end to protect it, when the housing open/close side 100B is opened. 【課題】ジャム解消操作時に発生する虞のあるベルト端部の亀裂や破損を防止できる構成を備えた定着装置を提供する。【解決手段】筐体固定側１００Ａに設けられた可撓性の定着ベルト６Ａ１をニップ形成部材６Ａ３に加圧する加圧ローラ６Ｂ１が筐体開閉側１００Ｂに配置し、ジャム解消時に筐体開閉側１００Ｂを開放した際に、定着ベルト６Ａ１の支持部材であるベルト保持部材４０が支持される支持フランジ部材５０の段差部５０Ａと段差部５０Ａにベルト端部が衝突するのを防止して保護するリング部材６０との間の隙間に、筐体開閉側１００Ｂの開放時に進入するガイド部材７１を備えた可動位置決め機構７０により加圧ローラ６Ｂ１の加圧が解除された際のベルト端部の位置決めを適正化することを特徴とする。【選択図】図４
Bibliography:Application Number: JP20130210948