JP3586853B2

JP3586853B2 - Apparatus for removing image forming substance from image carrier

Info

Publication number: JP3586853B2
Application number: JP11619797A
Authority: JP
Inventors: 徹丸山; 正敏斉藤; 勝新貝; 恵里子千葉; 英紀友野; 哲也金子
Original assignee: Ricoh Co Ltd
Current assignee: Ricoh Co Ltd
Priority date: 1997-04-19
Filing date: 1997-04-19
Publication date: 2004-11-10
Anticipated expiration: 2017-04-19
Also published as: JPH10293509A

Description

【０００１】
【発明の属する技術分野】
本発明は、複写機、ファクシミリ、プリンタ、印刷機等の画像形成装置で画像を形成した像保持体から該画像を構成する像形成物質を除去する像保持体からの像形成物質除去装置に係わり、詳しくは像形成物質除去装置に用いる剥離部材のクリーニング技術に関するものである。
【０００２】
【従来の技術】
従来、資源の有効活用等の観点から、像保持体を再利用するために像保持体から像形成物質を除去する像形成物質除去方法及びその装置が各種提案されている。
像保持体上の像形成物質に剥離部材を接触させた後、剥離部材と像保持体とを離間させることにより、像保持体から像形成物質を剥離する剥離手段を備えた像保持体からの像形成物質除去装置において、剥離部材の剥離性能を維持するために、剥離部材上に付着した像形成物質をクリーニング部材で除去するものが知られている。
【０００３】
本出願人は、特願平７−１０７９１３において、剥離部材の表面に当接するスパイラル状のエッジを外周に有するローラ状のクリーニング部材を上記クリーニング装置に用いることを提案した。この像形成物質除去装置によれば、剥離部材に付着した像形成物質を確実に除去し、剥離部材の繰り返し使用時の剥離性能を維持するとともに、剥離部材表面の損傷を磨耗程度に抑えることができる。
【０００４】
また本出願人は、特願平８−０３７４４３において、前記スパイラル状のエッジを外周に有するローラ状のクリーニング部材を備えたクリーニング装置において、該クリーニング部材と該剥離部材間の接触圧力、及び接触幅、該剥離部材の硬度、相対移動速度、剥離部材表面温度を最適化することにより、剥離部材に付着した像形成物質をより確実に除去するためのクリーニング装置を提案している。
【０００５】
さらに、本出願人は、前記スパイラル状のエッジを外周に有するローラ状のクリーニング部材を備えたクリーニング装置において、ローラ状のクリーニング部材を剥離部材に弾性的に付勢して押圧することにより、剥離部材表面に付着している像形成物質を確実にかつ安定して除去できるクリーニング装置を提案している。
【０００６】
【発明が解決しようとする課題】
ところが、前記スパイラル状のエッジを外周に有するローラ状のクリーニング部材を回転駆動し、剥離部材表面に付着している像形成物質を除去するクリーニング装置においては、スパイラル状のエッジが前記剥離部材表面の像形成物質（トナー）を掻き取る際、前記スパイラル状のエッジのネジレ角度に起因し、前記剥離部材（無端ベルト）を進行方向と直角な一方向に移動させる作用が発生し、前記剥離部材の走行を阻害する欠点があった。
これを図１９、図２０、図２１をもとに以下に説明する。図１９は従来方式のクリーニング装置の正面図、図２０は同上面図、図２１はスパイラル状のエッジが剥離部材表面の像形成物質（トナー）を掻き取る際の力の作用を示すベクトル図である。
【０００７】
剥離部材（ベルト）３０６と、外周部にスパイラル状のエッジを外周に有するローラ状のクリーニング部材であるクリーニングローラ（以下スパイラルローラという）３２１と、これに対向配置し剥離部材３０６を挟持した状態で該スパイラルローラに対し弾性的に圧接するバックアップローラ３０４により構成されたクリーニング装置において、スパイラルローラ３２１を一方向に回転駆動することにより、剥離部材３０６表面に転写された像形成物質（トナー）Ｔはスパイラルローラ３２１のエッジ部において連続的に掻き取られ、剥離部材３０６表面より除去される。このときスパイラルローラ３２１の回転駆動により回転力Ｆが発生し、スパイラルローラ３２１のエッジ部と像形成物質Ｔの接触位置において、像形成物質Ｔには回転力Ｆと同方向にクリーニング力（トナーに作用する力）ｆが作用する。
【０００８】
クリーニング力ｆはスパイラルローラ３２１のエッジ部のネジレ角度αにより前記に垂直スパイラルローラのエッジに垂直な方向の力（トナー切削力）ｆ１、及びエッジに平行な力（非切削力）ｆ２に分力される。剥離部材３０６表面に付着した像形成物質Ｔを剥離部材３０６から除去するために作用する力は前記ｆ１であり、ｆ１＝ｆｃｏｓαとなりα＝０で最大、α＝π／２で最小の値をとる。ここで剥離部材３０６の進行方向とスパイラルローラ３２１の回転中心軸が直交している場合、スパイラルローラ３２１のエッジに垂直な方向の力（トナー切削力）ｆ１はさらに、剥離部材３０６の進行方向に平行な力ｆ１（Ｖ）と直角な力ｆ１（Ｈ）に分力される。
【０００９】
ｆ１（Ｖ）はスパイラルローラ３２１の回転方向及び回転速度により剥離部材３０６の進行に対し、加速力または減速力として作用するが、通常、剥離部材３０６の駆動力（トルク）は前記加速力、減速力に対し十分に大きく、また剥離部材３０６とこれを張架するための複数の支持ローラ３０１及びバックアップローラ３４０間における摩擦力も十分大きいことから、前記ｆ１（Ｖ）による剥離部材３０６の線速の変動等の走行上の不具合は生じない。
一方、剥離部材３０６の進行方向に直角な力ｆ１（Ｈ）はスパイラルローラ３２１が回転駆動され像形成物質Ｔに対し除去作用が働く間、常に連続して前記剥離部材３０６の進行方向を走行方向に対し直角方法に移動させるように作用し、この結果剥離部材３０６は序々に一方向に移動し、複数の支持ローラ３０１及びバックアップローラ３４０から逸脱し、正常な走行が不能になる欠点があった。
【００１０】
本発明は以上の問題点に鑑みなされたものであり、その目的は、剥離部材の表面に当接するスパイラル状のエッジを外周に有するローラ状のクリーニング部材を備え、剥離部材表面の像形成物質（トナー）を掻き取る際、スパイラル状エッジ部のネジレ角度に起因する剥離部材の進行方向と直角方向への移動を防止し、正常な剥離部材の走行を確保することが可能な像形成物質除去装置を提供することにある。
【００１１】
【課題を解決するための手段】
前記課題を解決するため本発明の請求項１に係る像保持体からの像形成物質除去装置は、像保持体に付着している像形成物質に対して、該像形成物質と該像保持体との付着力よりも大きな付着力を有する剥離部材を、該像保持体上の像形成物質に接触させた後、該剥離部材と該像保持体とを離間させることにより、該像保持体から該像形成物質を剥離する剥離手段と、該像保持体から離間した剥離部材に、スパイラル状のエッジを外周に有するクリーニングローラを回転及び押圧接触させることにより、該剥離部材に付着した像形成物質を除去してクリーニングするクリーニング手段とを備えた像保持体からの像形成物質除去装置において、上記剥離部材を挟持する上記クリーニングローラとこれに対向し配置したバックアップローラとを、クリーニングローラの回転にともない上記スパイラル状のエッジが軸方向に移動する向きの下流側が上流側に対して前記剥離部材の進行方向の前方側に位置するように所定の傾きを設け配置して、前記剥離部材がバックアップローラの回転中心線に対し傾きをもって巻きつくために生じる剥離部材進行方向と直交方向への剥離部材の移動作用と、前記クリーニングローラの外周に配置したエッジのネジレ角度により発生する剥離部材の剥離部材進行方向と直交方向への移動作用が相殺されるように配置したことを特徴とする。
【００１２】
本発明の請求項２に係る像保持体からの像形成物質除去装置は、像保持体に付着している像形成物質に対して、該像形成物質と該像保持体との付着力よりも大きな付着力を有する剥離部材を、該像保持体上の像形成物質に接触させた後、該剥離部材と該像保持体とを離間させることにより、該像保持体から該像形成物質を剥離する剥離手段と、該像保持体から離間した剥離部材に、スパイラル状のエッジを外周に有するクリーニングローラを回転及び押圧接触させることにより、該剥離部材に付着した像形成物質を除去してクリーニングするクリーニング手段とを備えた像保持体からの像形成物質除去装置において、上記クリーニングローラをスパイラル状のエッジのネジレ角（α）が同一でネジレ方向が同一に配置された一対の互いに回転方向が異なる２本のローラで形成し、これに対向し配置した一本のバックアップローラによって上記剥離部材を挟持し、前記回転方向が異なる２本のローラで形成した一対のクリーニングローラを他方のローラに対して互いに逆方向回転、同一回転数、同一押圧力にして前記剥離部材に付着した像形成物質を除去してクリーニングすることを特徴とする。
【００１３】
本発明の請求項３に係る像保持体からの像形成物質除去装置は、請求項２記載の構成において前記２本一対のスパイラル状のエッジを外周に有するクリーニングローラを交互に回転駆動し、上記剥離部材に付着した像形成物質を除去してクリーニングすることを特徴とする。
【００１４】
本発明の請求項４に係る像保持体からの像形成物質除去装置は、請求項２記載の構成において前記２本一対のスパイラル状のエッジを外周に有するクリーニングローラ回転数を任意のタイミングで、一方のローラ回転数に対し他方のローラ回転数を大きく回転駆動し、前記剥離部材に付着した像形成物質を除去してクリーニングすることを特徴とする。
【００１５】
本発明の請求項５に係る像保持体からの像形成物質除去装置は、請求項２記載の構成において前記２本一対のスパイラル状のエッジを外周に有するクリーニングローラの剥離部材への押圧力を任意のタイミングで一方のローラの押圧力に対し他方のローラの押圧力を大とし、前記剥離部材に付着した像形成物質を除去してクリーニングすることを特徴とする。
【００１６】
本発明の請求項６に係る像保持体からの像形成物質除去装置は、像保持体に付着している像形成物質に対して、該像形成物質と該像保持体との付着力よりも大きな付着力を有する剥離部材を、該像保持体上の像形成物質に接触させた後、該剥離部材と該像保持体とを離間させることにより、該像保持体から該像形成物質を剥離する剥離手段と、該像保持体から離間した剥離部材に、スパイラル状のエッジを外周に有するクリーニングローラを回転及び押圧接触させることにより、該剥離部材に付着した像形成物質を除去してクリーニングするクリーニング手段とを備えた像保持体からの像形成物質除去装置において、上記クリーニングローラが逆方向のネジレ角度を有する２本を一対で配置し、これに対向し配置した一本のバックアップローラにより、上記剥離部材を挟持し、前記スパイラル状のエッジを外周に有する一対のクリーニングローラを他方のローラに対し互いに同一方向回転、同一回転数、同一押圧力にして前記剥離部材に付着した像形成物質を除去してクリーニングすることを特徴とする。
【００１７】
本発明の請求項７に係る像保持体からの像形成物質除去装置は、請求項６記載の構成において前記２本一対のスパイラル状のエッジを外周に有するクリーニングローラを交互に回転駆動し、上記剥離部材に付着した像形成物質を除去してクリーニングすることを特徴とする。
【００１８】
本発明の請求項８に係る像保持体からの像形成物質除去装置は、請求項６記載の構成において前記２本一対のスパイラル状のエッジを外周に有するクリーニングローラ回転数を任意のタイミングで、一方のローラ回転数に対し他方のローラ回転数を大きく回転駆動し、前記剥離部材に付着した像形成物質を除去してクリーニングすることを特徴とする。
【００１９】
本発明の請求項９に係る像保持体からの像形成物質除去装置は、請求項６記載の構成において前記スパイラル状のエッジを外周に有するクリーニングローラの前記剥離部材への押圧力を任意のタイミングで一方のローラの押圧力に対し、他方のローラの押圧力を大きくし、前記剥離部材に付着した像形成物質を除去してクリーニングすることを特徴とする。
【００２０】
【発明の実施の形態】
以下、この発明の実施の形態を説明する。
図１は、本発明に係る像保持体からの像形成物質除去装置の第１の実施形態の上面図であるまた図２は動作説明図である。両図に示されるように、像形成物質（トナー）Ｔが表面に付着した剥離部材（ベルト）３０６を挟持つするスパイラル状のエッジを外周に有するスパイラルローラ３２１と、これに対向配置し、剥離部材３０６に弾性的に付勢して押圧するバックアップローラ３４０が、剥離部材３０６の進行方向に対し直角な位置に対し、予め所定の傾きθを持って配置されている。
【００２１】
図２のようにバックアップローラ３４０の回転中心線を、剥離部材３０６の進行方向に対しこれと直交する角度に対しθの傾きを付けては位置することにより、剥離部材３０６はバックアップローラ３４０に対しθの傾きで巻きつく。
この状態でバックアップローラ３４０の回転とともに剥離部材３０６はバックアップローラ３４０の回転中心線上で矢印の方向にｆｈの移動力により序々に移動する。図１において、スパイラルローラ３２１が矢印の方向に回転駆動されると、前記のようにエッジのネジレ角度の作用によりｆ１（Ｈ）が発生し、剥離部材３０６に前記ｆｈ移動力と反対方向に働く。
ここで、ｆｈ＝ｆ１（Ｈ）となるようにスパイラルローラのネジレ角α、及び傾き角度θを設定することにより、ｆｈ、ｆ１（Ｈ）を相殺させることができる。
【００２２】
図３及び図４に本発明の第２の実施形態を示す。本実施形態では、像形成物質（トナー）Ｔが表面に付着した剥離部材（ベルト）３０６を挟持するスパイラル状のエッジを外周に有するスパイラルローラが互いに回転方向が異なる（逆回転）２本３２１ａ及び３２１ｂを一対で配置し、これに対向し配置した一本のバックアップローラ３４０により剥離部材３０６に弾性的に付勢して押圧する。
【００２３】
剥離部材３０６表面に付着した像形成物質Ｔは剥離部材３０６の進行とともにスパイラルローラ３２１ａ、３２１ｂとバックアップローラ３４０により形成されたニップ部において、スパイラルローラ３２１ａ、３２１ｂの回転力により掻き落とされ、除去される。
ここで２本一対のスパイラルローラ３２１ａ、３２１ｂのスパイラル状のエッジのネジレ角度、回転数、押圧力を等しくし、上記２本のスパイラルローラの回転駆動を歯車等の手段により、その回転方向のみを反対方向にし、同時に回転することにより、図２１におけるｆ１（Ｈ）つまり、剥離部材を進行方向と直交方向に移動させる力がスパイラルローラ３２１ａとスパイラルローラ３２１ｂにおいて同じ大きさで、相反する向きに発生する。つまり、スパイラルローラ３２１ａにより直交方向に僅かに移動させられた剥離部材３０６はスパイラルローラ３２１ｂにより上記と反対方向に同じように移動させられ、直交方向の変位はキャンセルされることになる。
【００２４】
図５、図６、及び図７に本発明の第３の実施形態を示す。また正面断面図は前記図３と同様である。
上記請求項２の構成において剥離部材３０６が進行方向に対し直交方向への移動位置を検出するセンサＳ１、Ｓ２を備え、スパイラルローラ３２１ａとスパイラルローラ３２１ｂの回転駆動を各々クラッチ等の手段により継断し、前記２本一対のスパイラルローラを交互に回転、停止する。
【００２５】
図７に動作のタイミングチャートを示す。剥離部材（ベルト）３０６は矢印方向に進行しながらスパイラルローラＡにより表面に付着した像形成物質Ｔを除去する。このとき剥離部材３０６は前述の理由により進行方向と直交する方向に移動しはじめる。
ここで、センサＳ１が作動し、さらに剥離部材３０６がセンサＳ２が作動する位置まで変位したときスパイラルローラＢが回転駆動をはじめる。
その後、若干の時間差を設けスパイラルローラＡは回転駆動を停止し、スパイラルローラＢのみにより像形成物質Ｔの除去が行われる。このときスパイラルローラＢは前述のごとくスパイラルローラＡに対し逆方向の回転を与えるもので、このことにより剥離部材３０６は前述とは逆の直交方向へ移動をはじめ、前記Ｓ２、Ｓ１の順に非作動状態へ移行する。ここでＳ１が非作動（オフ）になった時点で再びスパイラルローラＡが回転駆動をはじめ、前記同様若干の時間差をもってスパイラルローラＢが停止する。以上を繰り返す。
【００２６】
図８、図９、及び図１０に本発明の第４の実施形態を示す。また正面断面図は前記図３と同様である。
前記請求項２の構成において剥離部材３０６が進行方向に対し直交方向へに移動位置を検出するセンサＳ１、Ｓ２を備え、スパイラルローラ３２１ａとスパイラルローラ３２１ｂの回転速度を各々独立に少なくとも２段階に可変する機構を備え、２本のスパイラルローラ３２１ａと３２１ｂを交互に加速、減速する。
【００２７】
図１０に動作のタイミングチャートを示す。剥離部材（ベルト）３０６は矢印方向に進行しながらスパイラルローラＡは速度１で、スパイラルローラＢは速度２により互いに逆方向の回転をしながら剥離部材３０６表面に付着した像形成物質Ｔを除去する、このとき速度１＞速度２とすることで、剥離部材３０６は前述の理由により進行方向と直交する方向に移動しはじめセンサＳ１が作動する。
【００２８】
さらに前記剥離部材がセンサＳ２が作動する位置まで変位したときスパイラルローラＡは速度２に、スパイラルローラＢは速度１に変速される、速度１＞速度２であるからこの時点で２本のローラの線速はローラＢ＞ローラＡとなり、このことにより剥離部材３０６は前述とは逆の直交方向へ移動をはじめ、前記Ｓ２、Ｓ１の順に非作動状態へ移行する。ここでＳ１が非作動（オフ）になった時点で再びスパイラルローラＡが速度１、スパイラルローラＢが速度２に変速し剥離部材３０６は前述とは逆の直交方向へ移動をはじめ、以上を繰り返す。
【００２９】
図１１、図１２、及び図１３に本発明の第５の実施形態を示す。また正面断面図は前記図３と同様である。
前記請求項２の構成において剥離部材３０６が進行方向に対し直交方向への移動位置を検出するセンサＳ１、Ｓ２を備え、スパイラルローラ３２１ａとスパイラルローラ３２１ｂのバックアップローラ３４０への加圧力を各々独立に少なくとも２段階に可変する機構を備え、２本のスパイラルローラ３２１ａと３２１ｂを交互に加圧、減圧する。
【００３０】
図１３に動作のタイミングチャートを示す。剥離部材（ベルト）３０６は矢印方向に進行しながらスパイラルローラＡは加圧１で、スパイラルローラＢは加圧２により互いに逆方向の回転をしながら剥離部材３０６表面に付着した像形成物質Ｔを除去する。このとき加圧力１＞加圧力２とすることで、剥離部材３０６は前述の理由により進行方向と直交する方向に移動しはじめセンサＳ１が作動する。さらに剥離部材３０６がセンサＳ２が作動する位置まで変位したとき、加圧調整カムＡ：５０２ａ及び加圧調整カムＢ：５０２ｂは半回転し、スパイラルローラＡは加圧２に減圧され、スパイラルローラＢは加圧１に増圧される、加圧力１＞加圧力２であるからこの時点で２本のローラの加圧力はローラＢ＞ローラＡとなり、このことにより剥離部材３０６は前述とは逆の直交方向へ移動をはじめ、Ｓ２、Ｓ１の順に非作動状態へ移行する。ここでＳ１が非作動（オフ）になった時点で再び前記スパイラルローラＡが加圧１、スパイラルローラＢが加圧２に変圧され、剥離部材３０６は前述とは逆の直交方向へ移動をはじめ、以上を繰り返す。
【００３１】
図１４、図１５に本発明の第６の実施形態を示す、像形成物質（トナー）Ｔが表面に付着した剥離部材（ベルト）３０６を挟持するスパイラル状のエッジを外周に有するスパイラルローラが互いに逆方向のネジレ角度を有する２本３２１ａ及び３２１ｃを一対で配置し、これに対向し配置した一本のバックアップローラ３４０により剥離部材３０６に弾性的に付勢して押圧する。
剥離部材３０６表面に付着した像形成物質Ｔは剥離部材３０６の進行とともにスパイラルローラ３２１ａ、３２１ｃとバックアップローラ３４０により形成されたニップ部において、スパイラルローラ３２１ａ、３２１ｃの回転力により掻き落とされ、除去される。
【００３２】
２本一対のスパイラルローラ３２１ａ、３２１ｃにおいて、前記スパイラル状のエッジのネジレ方向を逆方向とし、ネジレ角度、回転数、押圧力を等しくし、上記２本のスパイラルローラの回転駆動を歯付きベルト等の手段により、その回転方向を同方向にし、同時に回転することにより、図２１におけるｆ１（Ｈ）つまり、剥離部材を進行方向と直交方向に移動させる力がスパイラルローラ３２１ａとスパイラルローラ３２１ｃにおいて同じ大きさで、相反する向きに発生する。つまり、スパイラルローラ３２１ａにより前記直交方向に僅かに移動させられた剥離部材３０６はスパイラルローラ３２１ｃにより上記と反対方向に同じように移動させられ、直交方向の変位はキャンセルされることになる。
【００３３】
図１６に本発明の第７の実施形態を示す。なお正面断面図は前記図１４と同様である。本実施形態は上記請求項６の構成において剥離部材３０６が進行方向に対し直交方向への移動位置を検出するセンサＳ１、Ｓ２を備え、スパイラルローラ３２１ａとスパイラルローラ３２１ｃの回転駆動を各々クラッチ等の手段により継断し、前記２本一対のスパイラルローラを交互に回転、停止する。
【００３４】
また、動作のタイミングチャートは前記図７と同様である。剥離部材（ベルト）３０６は矢印方向に進行しながらスパイラルローラＡにより表面に付着した像形成物質Ｔを除去する、このとき剥離部材３０６は前述の理由により進行方向と直交する方向に移動しはじめる。
【００３５】
センサＳ１が作動し、さらに剥離部材がセンサＳ２が作動する位置まで変位したときスパイラルローラＣが回転駆動をはじめる。その後若干の時間差を設けスパイラルローラＡは回転駆動を停止し、スパイラルローラＣのみにより像形成物質Ｔの除去が行われる。
このときスパイラルローラＣは前述のごとくスパイラルローラＡに対し逆方向の回転を与えるもので、このことにより剥離部材３０６は前述とは逆の直交方向へ移動をはじめ、Ｓ２、Ｓ１の順に非作動状態へ移行する。ここでＳ１が非作動（オフ）になった時点で再びスパイラルローラＡが回転駆動をはじめ、前記同様若干の時間差をもってスパイラルローラＣが停止する。
以上を繰り返す。
【００３６】
図１７に本発明の第８の実施形態を示す。なお正面断面図は前記図１４と同様である。
本実施形態は上記請求項６の構成において剥離部材３０６が進行方向に対し直交方向への移動位置を検出するセンサＳ１、Ｓ２を備え、スパイラルローラ３２１ａとスパイラルローラ３２１ｃの回転速度を各々独立に少なくとも２段階に可変する機構を備え、前記２本のスパイラルローラを交互に加速、減速する。
【００３７】
動作のタイミングチャートは前記図１０と同様である。剥離部材（ベルト）３０６は矢印方向に進行しながらスパイラルローラＡは速度１で、スパイラルローラＣは速度２により互いに同方向の回転をしながら前記剥離部材３０６表面に付着した像形成物質Ｔを除去する、このとき速度１＞速度２であるからこの時点で２本のローラの線速はローラＣ＞ローラＡとなり、このことにより前記剥離部材３０６は前述とは逆の直交方向へ移動をはじめ、前記Ｓ２、Ｓ１の順に非作動状態へ移行する。ここでＳ１が非作動（オフ）になった時点で再び前記スパイラルローラＡが速度１、スパイラルローラＣが速度２に変速し剥離部材３０６は再び前述とは逆の直交方向へ移動をはじめ、以上を繰り返す。
【００３８】
図１８に本発明の第９の実施形態を示す、前述請求項６の構成において剥離部材３０６が進行方向に対し直交方向へに移動位置を検出するセンサＳ１、Ｓ２を備え、スパイラルローラ３２１ａとスパイラルローラ３２１ｃのバックアップローラ３４０への加圧力を各々独立に少なくとも２段階に可変する機構を備え、前記２本のスパイラルローラを交互に加圧、減圧する。
【００３９】
動作のタイミングチャートは前記図１３と同様である。剥離部材（ベルト）３０６は矢印方向に進行しながらスパイラルローラＡは加圧１で、スパイラルローラＣは加圧２により互いに同方向の回転をしながら前記剥離部材３０６表面に付着した像形成物質Ｔを除去する、このとき加圧力１＞加圧力２とすることで、剥離部材３０６は前述の理由により進行方向と直交する方向に移動しはじめセンサＳ１が作動する。
【００４０】
さらに前記剥離部材がセンサＳ２が作動する位置まで変位したとき、加圧調整カムＡ：５０２ａ及び加圧調整カムＢ：５０２ｂは半回転し、スパイラルローラＡは加圧２に減圧され、スパイラルローラＣは加圧１に増圧される、加圧力１＞加圧力２であるからこの時点で２本のローラの加圧力はローラＣ＞ローラＡとなり、このことにより剥離部材３０６は前述とは逆の直交方向へ移動をはじめ、Ｓ２、Ｓ１の順に非作動状態へ移行する。
ここでＳ１が非作動（オフ）になった時点で再びスパイラルローラＡが加圧１、スパイラルローラＣが加圧２に変圧され、剥離部材３０６は前述とは逆の直交方向へ移動をはじめ、以上を繰り返す。
【００４１】
【発明の効果】
以上詳述したように、本発明の請求項１に係る像形成物質除去装置においては、剥離部材を挟持するクリーニングローラとこれに対向し配置したバックアップローラを前記剥離部材の進行方向に直交する角度に対し所定の傾きを設け配置することにより、剥離部材（ベルト）がバックアップローラの回転中心線に対し傾きをもって巻きつくために生じる剥離部材進行方向と直交方向への剥離部材の移動作用と、クリーニングローラの外周に配置したエッジのネジレ角度により発生する剥離部材の剥離部材進行方向と直交方向への移動作用が相殺され、前記剥離部材が走行とともに序々に一方向に移動することが防止でき、剥離部材が複数の支持ローラ及びバックアップローラから逸脱し、正常な走行が阻害されることなく、安定した走行が確保され、装置の信頼性の向上がはかれる。
【００４２】
本発明の請求項２の像形成物質除去装置においては、クリーニングローラが互いに回転方向が異なる（逆回転）２本を一対で配置し、これに対向し配置した一本のバックアップローラにより、上記剥離部材を挟持し、前記一対のクリーニングローラを互いに逆方向回転、同一回転数、同一押圧力にして前記剥離部材に付着した像形成物質を除去してクリーニングすることにより、２本のクリーニングローラの押圧における回転駆動により、剥離部材を進行方向と直交方向移動させる力が相反する方向に発生し、剥離部材の直交方向の変位が元の位置に修正される。この結果、剥離部材が走行とともに序々に一方向に移動することが防止でき、剥離部材が複数の支持ローラ及びバックアップローラから逸脱し、正常な走行が阻害されることなく、安定した走行が確保され、装置の信頼性の向上がはかれる。さらに、２本のクリーニングローラにより像形成物質の除去が連続して２回行われるため、除去性能が向上しより確実に剥離部材表面に付着した像形成物質のクリーニングが可能となる。
【００４３】
本発明の請求項３の像形成物質除去装置においては、剥離部材の進行方向に対し直交方向への移動位置を検出する２つのセンサにより、２本一対のクリーニングローラを１本ずつ交互に回転駆動し、上記剥離部材に付着した像形成物質を除去してクリーニングすることにより、前記クリーニングローラの外周に配置したエッジのネジレ角度により発生する剥離部材の直交方向への移動を積極的に利用し、前記剥離部材の走行を進行方向に対する直交方向の変位を自動的に制御することが可能となり、剥離部材が走行とともに序々に一方向に移動することが防止でき、剥離部材が複数の支持ローラ及びバックアップローラから逸脱し、正常な走行が阻害されることなく、安定した走行が確保され、装置の信頼性の向上がはかれる。
【００４４】
本発明の請求項４の像形成物質除去装置においては、剥離部材の進行方向に対し直交方向への移動位置を検出する２つのセンサにより、２本一対のクリーニングローラ回転数を任意のタイミングで、一方のローラ回転数に対し他方のローラ回転数を大きく回転駆動することにより、前記クリーニングローラの外周に配置したエッジのネジレ角度により発生する剥離部材の直交方向への移動作用を自動的に制御することが可能となる。つまり、クリーニングローラの外周に配置したネジレ角を持ったエッジは回転数に比例して剥離部材との接触回数が増加し、剥離部材の進行方向に対する直交方向への変位作用の回数が増加する。２本のクリーニングローラの回転数に差がある場合、その差に相当する直交方向への変位作用が働くことになる。ここで、２本のクリーニングローラの回転数を上記センサの信号に従い各々加速、減速を行うことにより、剥離部材が走行とともに序々に一方向に移動することが防止でき、剥離部材が複数の支持ローラ及びバックアップローラから逸脱し、正常な走行が阻害されることなく、安定した走行が確保され、装置の信頼性の向上がはかれる。
【００４５】
本発明の請求項５の像形成物質除去装置においては、剥離部材の進行方向に対し直交方向への移動位置を検出する２つのセンサにより、２本一対のクリーニングローラの前記剥離部材への押圧力（加圧力）を任意のタイミングで一方のローラ押圧力（加圧力）に対し、他方のローラの押圧力（加圧力）を大きくし、前記剥離部材に付着した像形成物質を除去してクリーニングすることにより、前記クリーニングローラの外周に配置したエッジのネジレ角度により発生する剥離部材の直交方向への移動作用を自動的に制御することが可能となる。つまり、クリーニングローラの外周に配置したエッジは前述のように、ネジレ角の作用により剥離部材を進行方向に対し直交する方向に変位させるこの時の変位力は、クリーニングローラとバックアップローラ間の押圧つまり加圧力に比例する。加圧力の増加とともにに示すクリーニング力ｆは増加し、従ってその水平成分ｆ１（Ｈ）も増加する。その結果、剥離部材の進行方向に対する直交方向への変位力が増加する。２本のクリーニングローラの加圧力に差がある場合、その差に相当する直交方向への変位作用が働くことになる。ここで、２本のクリーニングローラの加圧力を上記センサの信号に従い各々増圧、減圧を行うことにより、剥離部材が走行とともに序々に一方向に移動することが防止でき、剥離部材が複数の支持ローラ及びバックアップローラから逸脱し、正常な走行が阻害されることなく、安定した走行が確保され、装置の信頼性の向上がはかれる。
【００４６】
本発明の請求項６の像形成物質除去装置においては、クリーニングローラが互いに逆方向のネジレ角度を有する２本を一対で配置し、これに対向し配置した一本のバックアップローラにより、上記剥離部材を挟持し、前記一対のクリーニングローラを互いに同一方向回転、同一回転数、同一押圧力により前記剥離部材に付着した像形成物質を除去してクリーニングすることにより、２本のクリーニングローラの押圧における回転駆動により、剥離部材を進行方向と直交方向移動させる力が相反する方向に発生し、剥離部材の直交方向の変位が元の位置に修正される。この結果、剥離部材が走行とともに序々に一方向に移動することが防止でき、剥離部材が複数の支持ローラ及びバックアップローラから逸脱し、正常な走行が阻害されることなく、安定した走行が確保され、装置の信頼性の向上がはかれる。さらに、２本のクリーニングローラにより像形成物質の除去が連続して２回行われるため、除去性能が向上しより確実に剥離部材表面に付着した像形成物質のクリーニングが可能となる。
【００４７】
本発明の請求項７の像形成物質除去装置においては、剥離部材の進行方向に対し直交方向への移動位置を検出する２つのセンサにより、２本一対のクリーニングローラを１本ずつ交互に回転駆動し、上記剥離部材に付着した像形成物質を除去してクリーニングすることにより、前記クリーニングローラの外周に配置したエッジのネジレ角度により発生する剥離部材の直交方向への移動作用を積極的に利用し、前記剥離部材の走行を進行方向に対する直交方向の変位を自動的に制御することが可能となり、剥離部材が走行とともに序々に一方向に移動することが防止でき、剥離部材が複数の支持ローラ及びバックアップローラから逸脱し、正常な走行が阻害されることなく、安定した走行が確保され、装置の信頼性の向上がはかれる。
【００４８】
本発明の請求項８の像形成物質除去装置においては、剥離部材の進行方向に対し直交方向への移動位置を検出する２つのセンサにより、２本一対のクリーニングローラ回転数を任意のタイミングで、一方のローラ回転数に対し他方のローラ回転数を大きく回転駆動することにより、前記クリーニングローラの外周に配置したエッジのネジレ角度により発生する剥離部材の直交方向への移動作用を自動的に制御することが可能となる。つまり、クリーニングローラの外周に配置したネジレ角を持ったエッジは回転数に比例して剥離部材との接触回数が増加し、剥離部材の進行方向に対する直交方向への変位作用の回数が増加する。２本のクリーニングローラの回転数に差がある場合、その差に相当する直交方向への変位作用が働くことになる。ここで、２本のクリーニングローラの回転数を上記センサの信号に従い各々加速、減速を行うことにより、剥離部材が走行とともに序々に一方向に移動することが防止でき、剥離部材が複数の支持ローラ及びバックアップローラから逸脱し、正常な走行が阻害されることなく、安定した走行が確保され、装置の信頼性の向上がはかれる。
【００４９】
本発明の請求項９の像形成物質除去装置においては、剥離部材の進行方向に対し直交方向への移動位置を検出する２つのセンサにより、２本一対のクリーニングローラの前記剥離部材への押圧力（加圧力）を任意のタイミングで一方のローラ押圧力（加圧力）に対し、他方のローラの押圧力（加圧力）を大きくし、前記剥離部材に付着した像形成物質を除去してクリーニングすることにより、前記クリーニングローラの外周に配置したエッジのネジレ角度により発生する剥離部材の直交方向への移動作用を自動的に制御することが可能となる。つまり、クリーニングローラの外周に配置したエッジは前述のように、ネジレ角の作用により剥離部材を進行方向に対し直交する方向に変位させるこの時の変位力は、クリーニングローラとバックアップローラ間の押圧つまり加圧力に比例する。加圧力の増加とともにに示すクリーニング力ｆは増加し、従ってその水平成分ｆ１（Ｈ）も増加する。その結果、剥離部材の進行方向に対する直交方向への変位力が増加する。２本のクリーニングローラの加圧力に差がある場合、その差に相当する直交方向への変位作用が働くことになる。ここで、２本のクリーニングローラの加圧力を上記センサの信号に従い各々増圧、減圧を行うことにより、剥離部材が走行とともに序々に一方向に移動することが防止でき、剥離部材が複数の支持ローラ及びバックアップローラから逸脱し、正常な走行が阻害されることなく、安定した走行が確保され、装置の信頼性の向上がはかれる。
【図面の簡単な説明】
【図１】本発明に係る像形成物質除去装置の第１の実施形態の上面図である。
【図２】図１の像形成物質除去装置の動作説明図である。
【図３】本発明に係る像形成物質除去装置の第２の実施形態の正面断面図である。
【図４】図３の像形成物質除去装置の上面図である。
【図５】本発明に係る像形成物質除去装置の第３の実施形態の上面図である。
【図６】図５の像形成物質除去装置における剥離部材の移動の説明図である。
【図７】図５の像形成物質除去装置の動作タイミングチャートである。
【図８】本発明に係る像形成物質除去装置の第４の実施形態の上面図である。
【図９】図８の像形成物質除去装置における剥離部材の移動の説明図である。
【図１０】図８の像形成物質除去装置の動作タイミングチャートである。
【図１１】本発明に係る像形成物質除去装置の第５の実施形態の正面断面図である。
【図１２】図１１の像形成物質除去装置における剥離部材の移動の説明図である。
【図１３】図１１の像形成物質除去装置の動作タイミングチャートである。
【図１４】本発明に係る像形成物質除去装置の第６の実施形態の正面断面図である。
【図１５】図１４の像形成物質除去装置の上面図である。
【図１６】本発明に係る像形成物質除去装置の第７の実施形態の上面図である。
【図１７】本発明に係る像形成物質除去装置の第８の実施形態の上面図である。
【図１８】本発明に係る像形成物質除去装置の第９の実施形態の正面断面図である。
【図１９】従来のクリーニング装置の正面断面図である。
【図２０】図１９のクリーニング装置の上面図である。
【図２１】スパイラル状エッジが像形成物質を掻き取る際の力の作用ベクトル図である。
【符号の説明】
３０６剥離部材
３２１スパイラルローラ
３４０バックアップローラ
Ｔトナー[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an apparatus for removing an image forming substance from an image carrier which forms an image from an image carrier having an image formed thereon by an image forming apparatus such as a copying machine, a facsimile, a printer, and a printing machine. More particularly, the present invention relates to a technique for cleaning a peeling member used in an image forming substance removing apparatus.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, from the viewpoint of effective utilization of resources, various methods and apparatuses for removing an image forming substance for removing an image forming substance from an image carrier in order to reuse the image carrier have been proposed.
After the release member is brought into contact with the image forming substance on the image holding member, the separation member and the image holding member are separated from each other, whereby the image holding member is provided with a separation unit for separating the image forming material from the image holding member. 2. Description of the Related Art There is known an image forming substance removing apparatus that removes an image forming substance attached on a peeling member by a cleaning member in order to maintain the peeling performance of the peeling member.
[0003]
The applicant of the present application has proposed in Japanese Patent Application No. 7-107913 that a roller-shaped cleaning member having a spiral edge on the outer periphery in contact with the surface of a peeling member is used for the cleaning device. According to this image forming substance removing apparatus, the image forming substance adhered to the peeling member is reliably removed, the peeling performance at the time of repeated use of the peeling member is maintained, and the damage on the surface of the peeling member is suppressed to a wear level. it can.
[0004]
Further, the present applicant has disclosed in Japanese Patent Application No. 08-037443 a cleaning device provided with a roller-shaped cleaning member having the spiral edge on the outer periphery, wherein a contact pressure and a contact width between the cleaning member and the peeling member are provided. A cleaning device has been proposed for optimizing the hardness, relative movement speed, and surface temperature of the peeling member, thereby more reliably removing the image forming substance attached to the peeling member.
[0005]
Further, in the cleaning apparatus provided with a roller-shaped cleaning member having the spiral edge on the outer periphery, the present applicant further applies a roller-shaped cleaning member elastically to a peeling member and presses the same. There has been proposed a cleaning device capable of reliably and stably removing an image forming substance adhered to a member surface.
[0006]
[Problems to be solved by the invention]
However, in a cleaning device that rotationally drives a roller-shaped cleaning member having the spiral edge on the outer periphery and removes the image forming substance attached to the surface of the peeling member, the spiral edge is formed on the surface of the peeling member. When the image forming substance (toner) is scraped off, the action of moving the peeling member (endless belt) in one direction perpendicular to the traveling direction occurs due to the twist angle of the spiral edge. There was a drawback that hindered running.
This will be described below with reference to FIGS. 19, 20 and 21. 19 is a front view of a conventional cleaning apparatus, FIG. 20 is a top view of the same, and FIG. 21 is a vector diagram showing a force action when a spiral edge scrapes an image forming substance (toner) on the surface of a peeling member. is there.
[0007]
Peeling member (belt) 306 and roller-shaped cleaning member having a spiral edge on the outer periphery Is a cleaning roller In a cleaning device including a spiral roller 321 (hereinafter, referred to as a spiral roller) and a backup roller 304 which is disposed opposite to the spiral roller and elastically pressed against the spiral roller while sandwiching the peeling member 306, the spiral roller 321 is moved in one direction. By rotating, the image forming substance (toner) T transferred to the surface of the peeling member 306 is continuously scraped off at the edge of the spiral roller 321 and is removed from the surface of the peeling member 306. At this time, a rotational force F is generated by the rotational driving of the spiral roller 321, and at the contact position between the edge of the spiral roller 321 and the image forming material T, the image forming material T exerts a cleaning force (toner force) in the same direction as the rotational force F. The acting force f acts.
[0008]
The cleaning force f is divided into a force (toner cutting force) f1 in a direction perpendicular to the edge of the vertical spiral roller and a force (non-cutting force) f2 parallel to the edge by the torsion angle α of the edge of the spiral roller 321. Is done. The force acting to remove the image forming substance T adhered to the surface of the peeling member 306 from the peeling member 306 is the aforementioned f1, f1 = fcosα, and takes the maximum value at α = 0 and the minimum value at α = π / 2. . Here, when the traveling direction of the peeling member 306 and the rotation center axis of the spiral roller 321 are orthogonal to each other, the force (toner cutting force) f1 in the direction perpendicular to the edge of the spiral roller 321 further increases in the traveling direction of the peeling member 306. The force is divided into a force f1 (H) perpendicular to the parallel force f1 (V).
[0009]
f1 (V) acts as an accelerating force or a decelerating force on the progress of the peeling member 306 depending on the rotation direction and the rotational speed of the spiral roller 321. Usually, the driving force (torque) of the peeling member 306 is the acceleration force and the deceleration. Since the force is sufficiently large with respect to the force, and the frictional force between the peeling member 306 and the plurality of support rollers 301 and the backup roller 340 for stretching the peeling member 306 is sufficiently large, the linear velocity of the peeling member 306 due to the f1 (V) is reduced. No running problems such as fluctuations occur.
On the other hand, the force f1 (H) perpendicular to the traveling direction of the peeling member 306 always continuously moves in the traveling direction of the peeling member 306 while the spiral roller 321 is rotationally driven to remove the image forming substance T. , Causing the peeling member 306 to move in one direction at a time, deviating from the plurality of support rollers 301 and the backup roller 340, and making it impossible to run normally. .
[0010]
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a roller-shaped cleaning member having a spiral-shaped edge on an outer periphery thereof in contact with a surface of a peeling member, and an image forming substance ( When scraping off the toner), an image forming substance removing apparatus capable of preventing the peeling member from moving in a direction perpendicular to the direction of travel of the peeling member due to the twist angle of the spiral edge portion and ensuring normal running of the peeling member. Is to provide.
[0011]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, an apparatus for removing an image-forming substance from an image carrier according to claim 1 of the present invention comprises: an image-forming substance adhering to the image carrier; A peeling member having an adhesive force greater than the adhesive force with The image carrier A separating unit that separates the image forming substance from the image holding member by separating the peeling member and the image holding member after being brought into contact with the upper image forming material; and a separation unit that separates from the image holding member. Forming a cleaning roller having a spiral edge on the outer periphery thereof in rotation and pressing contact with the member, thereby removing the image forming substance attached to the peeling member to perform cleaning, thereby forming an image from an image carrier. In the substance removing device, the cleaning roller sandwiching the peeling member and the backup roller disposed opposite to the cleaning roller are arranged such that the downstream side in the direction in which the spiral edge moves in the axial direction with the rotation of the cleaning roller is upstream. A predetermined inclination is provided so as to be positioned on the front side in the traveling direction of the peeling member, and the peeling member is The peeling member moving in the direction perpendicular to the direction of travel of the peeling member, which is caused by winding around the rotation center line of the roller, and the peeling member of the peeling member generated by the twist angle of the edge disposed on the outer periphery of the cleaning roller. The arrangement is such that the movement in the direction perpendicular to the traveling direction is offset.
[0012]
The apparatus for removing an image-forming substance from an image carrier according to claim 2 of the present invention is a device for removing an image-forming substance adhering to an image carrier from the adhesion between the image-forming substance and the image carrier. A peeling member with a large adhesive force The image carrier A separating unit that separates the image forming substance from the image holding member by separating the peeling member and the image holding member after being brought into contact with the upper image forming material; and a separation unit that separates from the image holding member. Forming a cleaning roller having a spiral edge on the outer periphery thereof in rotation and pressing contact with the member, thereby removing the image forming substance attached to the peeling member to perform cleaning, thereby forming an image from an image carrier. In the substance removing apparatus, the cleaning roller is formed by a pair of rollers having the same spiral angle (α) of spiral edges and the same spiral direction and arranged in the same rotational direction, and disposed opposite to the two rollers. Holding the peeling member by a single backup roller, Formed by two rollers having different rotation directions A pair of cleaning rollers Each other against the other roller Reverse rotation, same rotation speed, same pressing force do it The image forming material adhered to the peeling member is removed for cleaning.
[0013]
According to a third aspect of the present invention, there is provided an apparatus for removing an image forming substance from an image carrier according to the second aspect of the invention. Cleaning with a spiral edge on the outer circumference The roller is alternately driven to rotate to remove the image forming substance adhered to the peeling member and to perform cleaning.
[0014]
According to a fourth aspect of the present invention, there is provided an apparatus for removing an image forming substance from an image carrier according to the second aspect. Cleaning with a spiral edge on the outer circumference The invention is characterized in that the rotation speed of the other roller is set to be larger than the rotation speed of the other roller at an arbitrary timing, and the image forming substance adhered to the peeling member is removed to perform cleaning.
[0015]
According to a fifth aspect of the present invention, there is provided an apparatus for removing an image forming substance from an image carrier according to the second aspect of the present invention. Cleaning with a spiral edge on the outer circumference The pressing force of the roller against the peeling member is increased at any timing with respect to the pressing force of the one roller, and the image forming substance attached to the peeling member is removed to perform cleaning. I do.
[0016]
The apparatus for removing an image-forming substance from an image carrier according to claim 6 of the present invention is a device for removing an image-forming substance adhering to an image carrier from the adhesion between the image-forming substance and the image carrier. A peeling member with a large adhesive force The image carrier A separating unit that separates the image forming substance from the image holding member by separating the peeling member and the image holding member after being brought into contact with the upper image forming material; and a separation unit that separates from the image holding member. Forming a cleaning roller having a spiral edge on the outer periphery thereof in rotation and pressing contact with the member, thereby removing the image forming substance attached to the peeling member to perform cleaning, thereby forming an image from an image carrier. In the substance removing device, the cleaning roller is disposed in a pair of two having a twist angle in the opposite direction, and the peeling member is nipped by one backup roller disposed opposite to the cleaning roller. Has a spiral edge on the outer circumference Pair of cleaning Roller Each other against the other roller Same direction rotation , Same rotation speed, same pressing force do it The image forming material adhered to the peeling member is removed for cleaning.
[0017]
According to a seventh aspect of the present invention, there is provided an apparatus for removing an image forming substance from an image carrier according to the sixth aspect of the present invention. Cleaning with a spiral edge on the outer circumference The roller is alternately driven to rotate to remove the image forming substance adhered to the peeling member and to perform cleaning.
[0018]
According to an eighth aspect of the present invention, there is provided an apparatus for removing an image forming substance from an image carrier according to the sixth aspect of the present invention. Cleaning with a spiral edge on the outer circumference The invention is characterized in that the rotation speed of the other roller is set to be larger than the rotation speed of the other roller at an arbitrary timing, and the image forming substance adhered to the peeling member is removed to perform cleaning.
[0019]
According to a ninth aspect of the present invention, there is provided an apparatus for removing an image forming substance from an image carrier according to the sixth aspect. Cleaning with a spiral edge on the outer circumference The pressing force of the roller against the peeling member is increased at any timing with respect to the pressing force of one roller, and the pressing force of the other roller is increased to remove and clean the image forming substance attached to the peeling member. Features.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described.
FIG. 1 is a top view of a first embodiment of an apparatus for removing an image forming substance from an image carrier according to the present invention, and FIG. 2 is an explanatory view of the operation. As shown in both figures, a spiral roller 321 having a spiral edge on its outer periphery sandwiching a peeling member (belt) 306 having an image forming substance (toner) T adhered to its surface, and a spiral roller 321 disposed opposite to the spiral roller 321 for peeling A backup roller 340 that elastically urges and presses the member 306 is disposed with a predetermined inclination θ in advance at a position perpendicular to the traveling direction of the peeling member 306.
[0021]
As shown in FIG. 2, the rotation center line of the backup roller 340 is positioned with an inclination of θ with respect to an angle orthogonal to the traveling direction of the peeling member 306, so that the peeling member 306 is positioned with respect to the backup roller 340. It winds around with a slope of θ.
In this state, as the backup roller 340 rotates, the peeling member 306 gradually moves in the direction of the arrow on the rotation center line of the backup roller 340 by the moving force of fh. In FIG. 1, when the spiral roller 321 is driven to rotate in the direction of the arrow, f1 (H) is generated by the action of the twist angle of the edge as described above, and acts on the peeling member 306 in the direction opposite to the fh moving force. .
Here, fh and f1 (H) can be offset by setting the torsion angle α and the inclination angle θ of the spiral roller so that fh = f1 (H).
[0022]
3 and 4 show a second embodiment of the present invention. In the present embodiment, two spiral rollers 321a having different spiral directions (reverse rotation) each having a spiral edge on the outer periphery that sandwiches a peeling member (belt) 306 having an image forming substance (toner) T adhered to the surface thereof and 321b are arranged in a pair, and are pressed against the peeling member 306 elastically by a single backup roller 340 disposed opposite to the pair.
[0023]
The image forming substance T adhered to the surface of the peeling member 306 is scraped off and removed by the rotational force of the spiral rollers 321a and 321b in the nip formed by the spiral rollers 321a and 321b and the backup roller 340 as the peeling member 306 advances. You.
Here, the twist angle, the number of rotations, and the pressing force of the spiral edges of the pair of spiral rollers 321a and 321b are made equal, and only the rotation direction of the two spiral rollers is rotated by means such as gears. By rotating in the opposite direction and rotating at the same time, f1 (H) in FIG. 21, that is, the force for moving the peeling member in the direction orthogonal to the traveling direction is generated in the opposite direction with the same magnitude in the spiral roller 321a and the spiral roller 321b. I do. That is, the peeling member 306 slightly moved in the orthogonal direction by the spiral roller 321a is similarly moved in the opposite direction by the spiral roller 321b, and the displacement in the orthogonal direction is canceled.
[0024]
FIGS. 5, 6, and 7 show a third embodiment of the present invention. The front sectional view is the same as FIG.
In the configuration of the second aspect, sensors S1 and S2 are provided for detecting the position at which the peeling member 306 moves in a direction perpendicular to the traveling direction, and the rotational drive of the spiral roller 321a and the spiral roller 321b is disconnected by means such as a clutch. Then, the two spiral rollers are alternately rotated and stopped.
[0025]
FIG. 7 shows a timing chart of the operation. The peeling member (belt) 306 removes the image forming substance T attached to the surface by the spiral roller A while traveling in the direction of the arrow. At this time, the peeling member 306 starts to move in a direction orthogonal to the traveling direction for the above-described reason.
Here, when the sensor S1 operates and the peeling member 306 is further displaced to a position where the sensor S2 operates, the spiral roller B starts to rotate.
Thereafter, a slight time difference is provided, the rotation of the spiral roller A is stopped, and the image forming material T is removed only by the spiral roller B. At this time, the spiral roller B imparts a rotation in the opposite direction to the spiral roller A, as described above, whereby the peeling member 306 starts to move in the orthogonal direction opposite to that described above, and is deactivated in the order of S2 and S1. Move to state. Here, when S1 is deactivated (turned off), the spiral roller A starts rotating again, and the spiral roller B stops with a slight time difference as described above. Repeat the above.
[0026]
FIGS. 8, 9 and 10 show a fourth embodiment of the present invention. The front sectional view is the same as FIG.
In the configuration according to the second aspect, sensors S1 and S2 are provided for detecting a moving position of the peeling member 306 in a direction orthogonal to the traveling direction, and the rotational speeds of the spiral roller 321a and the spiral roller 321b can be independently varied in at least two steps. And a mechanism for alternately accelerating and decelerating the two spiral rollers 321a and 321b.
[0027]
FIG. 10 shows a timing chart of the operation. While the peeling member (belt) 306 moves in the direction of the arrow, the spiral roller A rotates at a speed 1 and the spiral roller B rotates at a speed 2 in opposite directions to remove the image forming substance T attached to the surface of the peeling member 306. At this time, by setting the speed 1> the speed 2, the peeling member 306 starts to move in the direction orthogonal to the traveling direction for the above-described reason, and the sensor S1 operates.
[0028]
Further, when the peeling member is displaced to the position where the sensor S2 operates, the spiral roller A is shifted to the speed 2 and the spiral roller B is shifted to the speed 1. Since speed 1> speed 2, at this point, the two rollers are shifted. The linear velocity becomes roller B> roller A, whereby the peeling member 306 starts to move in the orthogonal direction opposite to that described above, and shifts to the non-operation state in the order of S2 and S1. Here, when S1 is deactivated (turned off), the spiral roller A again shifts to speed 1 and the spiral roller B shifts to speed 2, and the peeling member 306 starts moving in the orthogonal direction opposite to the above, and the above is repeated. .
[0029]
FIGS. 11, 12, and 13 show a fifth embodiment of the present invention. The front sectional view is the same as FIG.
In the configuration according to the second aspect, sensors S1 and S2 are provided for detecting the position at which the peeling member 306 moves in the direction perpendicular to the traveling direction, and the pressing force of the spiral roller 321a and the spiral roller 321b on the backup roller 340 is independently controlled. It has a mechanism that can be changed in at least two stages, and alternately pressurizes and depressurizes the two spiral rollers 321a and 321b.
[0030]
FIG. 13 shows a timing chart of the operation. While the peeling member (belt) 306 advances in the direction of the arrow, the spiral roller A rotates at a pressure of 1 while the spiral roller B rotates in the opposite directions by the pressure 2 to release the image forming substance T adhered to the surface of the peeling member 306. Remove. At this time, by setting the pressing force 1> the pressing force 2, the peeling member 306 starts to move in the direction orthogonal to the traveling direction for the above-described reason, and the sensor S1 operates. Further, when the peeling member 306 is displaced to the position where the sensor S2 operates, the pressure adjustment cam A: 502a and the pressure adjustment cam B: 502b rotate half a turn, the spiral roller A is depressurized to the pressure 2 and the spiral roller B is depressed. Is increased to pressurization 1, the pressure 1> pressure 2, so that the pressure of the two rollers at this point becomes roller B> roller A, whereby the peeling member 306 is in reverse of the above. Starting in the orthogonal direction, the state shifts to the non-operation state in the order of S2 and S1. Here, when S1 is deactivated (turned off), the spiral roller A is again pressurized to 1 and the spiral roller B is changed to pressurized 2, and the peeling member 306 starts moving in the orthogonal direction opposite to the above. And repeat the above.
[0031]
FIGS. 14 and 15 show a sixth embodiment of the present invention, in which spiral rollers having a spiral edge on the outer periphery for sandwiching a peeling member (belt) 306 having an image forming substance (toner) T adhered to the surface thereof are mutually connected. Two pairs 321a and 321c having a twist angle in the opposite direction are arranged in a pair, and one backup roller 340 disposed opposite to the pair is elastically urged against the peeling member 306 and pressed.
The image forming substance T attached to the surface of the peeling member 306 is scraped off and removed by the rotational force of the spiral rollers 321a and 321c in the nip formed by the spiral rollers 321a and 321c and the backup roller 340 as the peeling member 306 advances. You.
[0032]
In the pair of spiral rollers 321a, 321c, the spiral direction of the spiral edge is reversed, the twist angle, the number of rotations, and the pressing force are made equal, and the rotational drive of the two spiral rollers is performed using a toothed belt or the like. By making the rotation direction the same direction and rotating at the same time, f1 (H) in FIG. 21, that is, the force for moving the peeling member in the direction orthogonal to the traveling direction is the same in the spiral roller 321a and the spiral roller 321c. Now, they occur in opposite directions. That is, the peeling member 306 slightly moved in the orthogonal direction by the spiral roller 321a is similarly moved in the opposite direction by the spiral roller 321c, and the displacement in the orthogonal direction is canceled.
[0033]
FIG. 16 shows a seventh embodiment of the present invention. The front sectional view is the same as FIG. This embodiment includes sensors S1 and S2 for detecting the position where the peeling member 306 moves in the direction orthogonal to the traveling direction in the configuration of claim 6, and controls the rotation of the spiral roller 321a and the spiral roller 321c by using a clutch or the like. The two pairs of spiral rollers are alternately rotated and stopped.
[0034]
The timing chart of the operation is the same as that of FIG. The peeling member (belt) 306 removes the image forming substance T adhered to the surface by the spiral roller A while traveling in the direction of the arrow. At this time, the peeling member 306 starts to move in a direction perpendicular to the traveling direction for the above-described reason.
[0035]
When the sensor S1 operates and the peeling member is further displaced to a position where the sensor S2 operates, the spiral roller C starts to rotate. After a slight time difference, the spiral roller A stops rotating and the image forming material T is removed only by the spiral roller C.
At this time, the spiral roller C imparts rotation in the opposite direction to the spiral roller A as described above, whereby the peeling member 306 starts to move in the orthogonal direction opposite to that described above, and becomes inactive in the order of S2 and S1. Move to. At this point, when S1 is deactivated (turned off), the spiral roller A starts to rotate again, and the spiral roller C stops with a slight time difference as described above.
Repeat the above.
[0036]
FIG. 17 shows an eighth embodiment of the present invention. The front sectional view is the same as FIG.
This embodiment includes sensors S1 and S2 for detecting the moving position of the peeling member 306 in the direction orthogonal to the traveling direction in the configuration of claim 6 described above, and the rotational speeds of the spiral roller 321a and the spiral roller 321c are each independently set at least independently. It has a mechanism that can be changed in two stages, and alternately accelerates and decelerates the two spiral rollers.
[0037]
The operation timing chart is the same as that of FIG. While the peeling member (belt) 306 moves in the direction of the arrow, the spiral roller A rotates at the speed 1 and the spiral roller C rotates in the same direction at the speed 2 to remove the image forming substance T attached to the surface of the peeling member 306. At this time, since the speed 1 is higher than the speed 2, the linear speed of the two rollers at this time becomes roller C> roller A, whereby the peeling member 306 starts moving in the orthogonal direction opposite to the above. The state shifts to the non-operation state in the order of S2 and S1. At this point, when S1 is deactivated (turned off), the spiral roller A again shifts to speed 1 and the spiral roller C shifts to speed 2, and the peeling member 306 starts to move again in the opposite orthogonal direction. repeat.
[0038]
FIG. 18 shows a ninth embodiment of the present invention. In the configuration of the above-mentioned claim 6, the peeling member 306 is provided with sensors S1 and S2 for detecting a moving position in a direction orthogonal to the traveling direction, and the spiral roller 321a and the spiral A mechanism is provided for varying the pressing force of the roller 321c to the backup roller 340 independently in at least two stages, and the two spiral rollers are alternately pressurized and depressurized.
[0039]
The operation timing chart is the same as in FIG. While the peeling member (belt) 306 advances in the direction of the arrow, the spiral roller A rotates at the pressure 1 and the spiral roller C rotates in the same direction by the pressure 2 while the image forming substance T adheres to the surface of the peeling member 306. At this time, by setting the pressing force 1> the pressing force 2, the peeling member 306 starts to move in the direction orthogonal to the traveling direction for the above-described reason, and the sensor S1 operates.
[0040]
Further, when the peeling member is displaced to the position where the sensor S2 operates, the pressure adjusting cam A: 502a and the pressure adjusting cam B: 502b rotate half a turn, the spiral roller A is depressurized to the pressure 2 and the spiral roller C is depressed. Is increased to pressurization 1. Since the pressure 1> pressure 2, the pressure of the two rollers at this point becomes roller C> roller A, whereby the peeling member 306 has the opposite Starting in the orthogonal direction, the state shifts to the non-operation state in the order of S2 and S1.
At this point, when S1 is deactivated (turned off), the spiral roller A is again pressurized to 1 and the spiral roller C is changed to pressurized 2, and the peeling member 306 starts to move in the orthogonal direction opposite to the above. Repeat the above.
[0041]
【The invention's effect】
As described in detail above, in the image forming substance removing apparatus according to claim 1 of the present invention, the peeling member is sandwiched. cleaning By arranging the roller and the backup roller arranged opposite thereto at a predetermined inclination with respect to the angle perpendicular to the traveling direction of the peeling member, the peeling member (belt) is wound with an inclination with respect to the rotation center line of the backup roller. Moving action of the peeling member in a direction orthogonal to the peeling member advancing direction generated for attaching, cleaning The movement of the peeling member in the direction perpendicular to the direction of travel of the peeling member caused by the twist angle of the edge disposed on the outer periphery of the roller is offset, and the peeling member can be prevented from moving in one direction at a time as it travels. Stable traveling is ensured without the member deviating from the plurality of support rollers and the backup roller and normal traveling is hindered, and the reliability of the apparatus is improved.
[0042]
In the image forming substance removing apparatus according to claim 2 of the present invention, cleaning Two pairs of rollers having different rotation directions (reverse rotation) are arranged in a pair, and the peeling member is nipped by a single backup roller arranged opposite to the pair. cleaning Roller Each other Reverse rotation, same rotation speed, same pressing force do it By removing and cleaning the image forming substance adhered to the peeling member, two cleaning Due to the rotational drive of the pressing of the roller, a force for moving the peeling member in the direction perpendicular to the traveling direction is generated in the opposite direction, and the displacement of the peeling member in the direction perpendicular to the original position is corrected. As a result, the peeling member can be prevented from gradually moving in one direction as the vehicle travels, and the peeling member deviates from the plurality of support rollers and the backup roller, and stable traveling can be secured without hindering normal traveling. Thus, the reliability of the device is improved. In addition, two cleaning Since the image forming substance is continuously removed twice by the roller, the removal performance is improved and the image forming substance adhered to the surface of the peeling member can be more reliably cleaned.
[0043]
In the image forming substance removing apparatus according to a third aspect of the present invention, a pair of two sensors detects a moving position of the peeling member in a direction orthogonal to a traveling direction of the peeling member. cleaning By rotating the rollers one by one alternately to remove and clean the image forming substance adhered to the peeling member, cleaning Positive use of the movement of the peeling member in the orthogonal direction caused by the torsion angle of the edge arranged on the outer periphery of the roller makes it possible to automatically control the displacement of the peeling member in the orthogonal direction with respect to the traveling direction. It can be prevented that the peeling member gradually moves in one direction with traveling, the peeling member deviates from the plurality of support rollers and the backup roller, and normal traveling is not hindered, stable traveling is secured, The reliability of the device is improved.
[0044]
In the image forming substance removing apparatus according to a fourth aspect of the present invention, a pair of two sensors is used to detect a movement position of the peeling member in a direction orthogonal to a traveling direction of the peeling member. cleaning By rotating the number of rotations of the roller at an arbitrary timing, the rotation number of the other roller is made to be larger than that of the other roller. cleaning It is possible to automatically control the movement of the peeling member in the orthogonal direction, which is caused by the twist angle of the edge disposed on the outer periphery of the roller. That is, cleaning The number of times that the edge having a torsion angle disposed on the outer periphery of the roller contacts the peeling member in proportion to the number of rotations, and the number of times of the displacement action in the direction perpendicular to the traveling direction of the peeling member increases. Two cleaning If there is a difference in the number of rotations of the rollers, a displacement action in the orthogonal direction corresponding to the difference acts. Here, two cleaning By performing the acceleration and deceleration of the rotation speed of the roller according to the signal of the sensor, respectively, it is possible to prevent the peeling member from moving in one direction gradually with traveling, and the peeling member deviates from the plurality of support rollers and the backup roller, Stable traveling is secured without hindering normal traveling, and the reliability of the device is improved.
[0045]
In the image forming substance removing apparatus according to a fifth aspect of the present invention, a pair of two sensors detects a movement position of the peeling member in a direction orthogonal to a traveling direction of the peeling member. cleaning The pressing force (pressing force) of the roller against the peeling member is increased at any timing with respect to the pressing force (pressing force) of one roller, and the pressing force (pressing force) of the other roller is increased. By removing and cleaning the imaging substance, cleaning It is possible to automatically control the movement of the peeling member in the orthogonal direction, which is caused by the twist angle of the edge disposed on the outer periphery of the roller. That is, cleaning As described above, the edge arranged on the outer periphery of the roller displaces the peeling member in the direction perpendicular to the traveling direction by the action of the twist angle, and the displacement force at this time is: cleaning It is proportional to the pressing force between the roller and the backup roller, that is, the pressing force. The cleaning force f indicated by the increase in the pressing force increases, and accordingly, the horizontal component f1 (H) also increases. As a result, the displacement force in the direction orthogonal to the traveling direction of the peeling member increases. Two cleaning If there is a difference in the pressing force of the rollers, a displacement action in the orthogonal direction corresponding to the difference acts. Here, two cleaning By increasing and decreasing the pressure of the roller in accordance with the signal from the sensor, the peeling member can be prevented from moving in one direction gradually with traveling, and the peeling member deviates from the plurality of support rollers and the backup roller. In addition, stable running is ensured without hindering normal running, and the reliability of the device is improved.
[0046]
In the image forming substance removing apparatus according to claim 6 of the present invention, two pairs of cleaning rollers having a twist angle in opposite directions are arranged in a pair, and the peeling member is formed by one backup roller arranged opposite thereto. Between the pair of cleaning Roller Each other Same direction rotation By removing and cleaning the image forming substance adhered to the peeling member by the same rotation speed and the same pressing force, two cleaning Due to the rotational drive of the pressing of the roller, a force for moving the peeling member in the direction perpendicular to the traveling direction is generated in the opposite direction, and the displacement of the peeling member in the direction perpendicular to the original position is corrected. As a result, the peeling member can be prevented from gradually moving in one direction as the vehicle travels, and the peeling member deviates from the plurality of support rollers and the backup roller, and stable traveling can be secured without hindering normal traveling. Thus, the reliability of the device is improved. In addition, two cleaning Since the image forming substance is continuously removed twice by the roller, the removal performance is improved and the image forming substance adhered to the surface of the peeling member can be more reliably cleaned.
[0047]
In the image forming substance removing apparatus according to claim 7 of the present invention, two sensors for detecting the movement position of the peeling member in the direction perpendicular to the traveling direction of the peeling member form a pair of two. cleaning By rotating the rollers one by one alternately to remove and clean the image forming substance adhered to the peeling member, cleaning It is possible to automatically control the displacement of the peeling member in the direction perpendicular to the traveling direction by positively utilizing the moving action of the peeling member in the orthogonal direction generated by the twist angle of the edge arranged on the outer periphery of the roller. It is possible to prevent the peeling member from gradually moving in one direction as it travels, and the peeling member deviates from the plurality of support rollers and the backup roller, and stable traveling is secured without hindering normal traveling. Thus, the reliability of the device is improved.
[0048]
In the image forming substance removing apparatus according to claim 8 of the present invention, two sensors for detecting the movement position of the peeling member in the direction perpendicular to the traveling direction of the peeling member form a pair of two. cleaning By rotating the number of rotations of the roller at an arbitrary timing, the rotation number of the other roller is made to be larger than that of the other roller. cleaning It is possible to automatically control the movement of the peeling member in the orthogonal direction, which is caused by the twist angle of the edge disposed on the outer periphery of the roller. That is, cleaning The number of times that the edge having a torsion angle disposed on the outer periphery of the roller contacts the peeling member in proportion to the number of rotations, and the number of times of the displacement action in the direction perpendicular to the traveling direction of the peeling member increases. Two cleaning If there is a difference in the number of rotations of the rollers, a displacement action in the orthogonal direction corresponding to the difference acts. Here, two cleaning By performing the acceleration and deceleration of the rotation speed of the roller according to the signal of the sensor, respectively, it is possible to prevent the peeling member from moving in one direction gradually with traveling, and the peeling member deviates from the plurality of support rollers and the backup roller, Stable traveling is secured without hindering normal traveling, and the reliability of the device is improved.
[0049]
In the image forming substance removing apparatus according to the ninth aspect of the present invention, a pair of two sensors detects the moving position of the peeling member in the direction orthogonal to the traveling direction of the peeling member. cleaning The pressing force (pressing force) of the roller against the peeling member is increased at any timing with respect to the pressing force (pressing force) of one roller, and the pressing force (pressing force) of the other roller is increased. By removing and cleaning the imaging substance, cleaning It is possible to automatically control the movement of the peeling member in the orthogonal direction, which is caused by the twist angle of the edge disposed on the outer periphery of the roller. That is, cleaning As described above, the edge arranged on the outer periphery of the roller displaces the peeling member in the direction perpendicular to the traveling direction by the action of the twist angle, and the displacement force at this time is: cleaning It is proportional to the pressing force between the roller and the backup roller, that is, the pressing force. The cleaning force f indicated by the increase in the pressing force increases, and accordingly, the horizontal component f1 (H) also increases. As a result, the displacement force in the direction orthogonal to the traveling direction of the peeling member increases. Two cleaning If there is a difference in the pressing force of the rollers, a displacement action in the orthogonal direction corresponding to the difference acts. Here, two cleaning By increasing and decreasing the pressure of the roller in accordance with the signal from the sensor, the peeling member can be prevented from moving in one direction gradually with traveling, and the peeling member deviates from the plurality of support rollers and the backup roller. In addition, stable running is ensured without hindering normal running, and the reliability of the device is improved.
[Brief description of the drawings]
FIG. 1 is a top view of a first embodiment of an image forming substance removing apparatus according to the present invention.
FIG. 2 is an operation explanatory view of the image forming substance removing apparatus of FIG. 1;
FIG. 3 is a front sectional view of a second embodiment of the image forming substance removing apparatus according to the present invention.
FIG. 4 is a top view of the image forming substance removing apparatus of FIG. 3;
FIG. 5 is a top view of a third embodiment of the image forming substance removing apparatus according to the present invention.
FIG. 6 is an explanatory diagram of movement of a peeling member in the image forming substance removing apparatus of FIG.
FIG. 7 is an operation timing chart of the image forming substance removing apparatus of FIG. 5;
FIG. 8 is a top view of a fourth embodiment of the image forming substance removing apparatus according to the present invention.
9 is an explanatory diagram of movement of a peeling member in the image forming substance removing apparatus of FIG.
FIG. 10 is an operation timing chart of the image forming substance removing apparatus of FIG. 8;
FIG. 11 is a front sectional view of a fifth embodiment of the image forming substance removing apparatus according to the present invention.
12 is an explanatory diagram of movement of a peeling member in the image forming substance removing device of FIG.
FIG. 13 is an operation timing chart of the image forming substance removing apparatus of FIG. 11;
FIG. 14 is a front sectional view of a sixth embodiment of the image forming substance removing apparatus according to the present invention.
FIG. 15 is a top view of the image forming substance removing apparatus of FIG.
FIG. 16 is a top view of a seventh embodiment of the image forming substance removing apparatus according to the present invention.
FIG. 17 is a top view of an image forming substance removing apparatus according to an eighth embodiment of the present invention.
FIG. 18 is a front sectional view of a ninth embodiment of the image forming substance removing apparatus according to the present invention.
FIG. 19 is a front sectional view of a conventional cleaning device.
FIG. 20 is a top view of the cleaning device of FIG. 19;
FIG. 21 is an action vector diagram of a force when a spiral edge scrapes an image forming substance.
[Explanation of symbols]
306 Peeling member
321 spiral roller
340 Backup roller
T toner

Claims

A peeling member having an adhesive force greater than the adhesive force between the image forming substance and the image holding member with respect to the image forming substance adhered to the image holding member is brought into contact with the image forming material on the image holding member. After that, the separating member and the image carrier are separated from each other, thereby separating the image forming substance from the image carrier, and a peeling member separated from the image carrier, a spiral edge is provided. An image forming substance removing apparatus for removing an image forming substance adhered to the peeling member by rotating and pressing a cleaning roller having an outer periphery thereof to remove the image forming substance attached to the peeling member.
The cleaning roller sandwiching the peeling member and the backup roller disposed opposite to the cleaning roller are disposed such that the downstream side of the direction in which the spiral edge moves in the axial direction with the rotation of the cleaning roller is the upstream side of the peeling member. A predetermined inclination is provided so as to be positioned on the front side in the traveling direction of the backup roller, and the peeling member is formed in a direction orthogonal to the traveling direction of the peeling member that is generated because the peeling member is wound around the rotation center line of the backup roller with an inclination. And the movement of the peeling member in the direction perpendicular to the direction of travel of the peeling member caused by the twist angle of the edge disposed on the outer periphery of the cleaning roller is offset. Image forming substance removing device.

A peeling member having an adhesive force greater than the adhesive force between the image forming substance and the image holding member with respect to the image forming substance adhered to the image holding member is brought into contact with the image forming material on the image holding member. After that, the separating member and the image carrier are separated from each other, thereby separating the image forming substance from the image carrier, and a peeling member separated from the image carrier, a spiral edge is provided. An image forming substance removing apparatus for removing an image forming substance adhered to the peeling member by rotating and pressing a cleaning roller having an outer periphery thereof to remove the image forming substance attached to the peeling member.
The cleaning roller is formed of a pair of rollers having the same spiral angle (α) of spiral edges and the same spiral direction and arranged in the same rotational direction, and having two rotating directions different from each other. the stripping member sandwiched by the rollers, the reverse rotation to each other a pair of cleaning rollers forming direction of rotation with two rollers having different relative to the other roller, the same rotational speed, the peeling member in the same pressing force An apparatus for removing an image-forming substance from an image carrier, wherein the apparatus removes the image-forming substance adhered to the substrate and performs cleaning.

3. An image carrier according to claim 2, wherein said cleaning roller having a pair of spiral edges on its outer periphery is rotated alternately to remove an image forming substance adhered to said peeling member and to perform cleaning. For removing imaging substance from the

The image forming material adhered to the peeling member, by rotating the cleaning roller having the pair of two spiral edges on the outer periphery at an arbitrary timing and rotating the other roller at a larger rotation speed than the other roller rotation speed. 3. The apparatus according to claim 2, wherein the cleaning is performed by removing the toner.

The pressing force of the cleaning roller having the two pairs of spiral edges on the outer periphery is applied to the peeling member by increasing the pressing force of the other roller relative to the pressing force of the other roller at an arbitrary timing. 3. The apparatus according to claim 2, wherein the cleaning is performed by removing the formed image forming substance.

A peeling member having an adhesive force greater than the adhesive force between the image forming substance and the image holding member with respect to the image forming substance adhered to the image holding member is brought into contact with the image forming material on the image holding member. After that, the separating member and the image carrier are separated from each other, thereby separating the image forming substance from the image carrier, and a peeling member separated from the image carrier, a spiral edge is provided. An image forming substance removing apparatus for removing an image forming substance adhered to the peeling member by rotating and pressing a cleaning roller having an outer periphery thereof to remove the image forming substance attached to the peeling member.
Two pairs of cleaning rollers having opposite twist angles are disposed in a pair, and one backup roller disposed opposite to the cleaning roller sandwiches the peeling member, and a pair of pairs having the spiral edge on the outer periphery . cleaning roller mutually the same direction rotation relative to the other roller, image formation from the same rotational speed, by removing the image forming substance adhering to the separating member in the same pressing force image carrier, characterized in that cleaning Material removal device.

7. An image carrier according to claim 6, wherein said cleaning roller having a pair of spiral edges on its outer periphery is rotated alternately to remove an image forming substance attached to said peeling member and to perform cleaning. For removing imaging substance from the

The image forming material adhered to the peeling member, by rotating the cleaning roller having the pair of two spiral edges on the outer periphery at an arbitrary timing and rotating the other roller at a larger rotation speed than the other roller rotation speed. The apparatus for removing an image forming substance from an image carrier according to claim 6, wherein the cleaning is performed by removing the toner.

The pressing force of the cleaning roller having the spiral edge on the outer circumference against the peeling member is increased at any timing with respect to the pressing force of the other roller, and the pressing force of the other roller is increased. The apparatus for removing an image forming substance from an image carrier according to claim 6, wherein the cleaning is performed by removing the forming substance.