JP2007206414A5 - - Google Patents

Claims (5)

像担持体を帯電させる帯電手段と、前記像担持体に形成された潜像を現像剤を用いて現像する現像手段と、前記像担持体の現像剤像を記録材に転写する転写手段と、前記記録材に転写された前記現像剤を定着させる定着手段と、を備える画像形成装置において、
前記帯電手段に帯電電圧を印加する帯電電圧印加手段と、
前記転写手段に転写電圧を印加する転写電圧印加手段と、を備え、
前記転写電圧印加手段によって前記転写手段に前記転写電圧を印加して前記記録材に前記現像剤像を転写した後、前記帯電電圧印加手段によって前記帯電電圧を印加することにより、前記転写手段に対して該転写手段をクリーニングするためのクリーニング電圧を印加することを特徴とする画像形成装置。 A charging means for charging the image bearing member, prior to a developing unit for developing with the current image agent a latent image formed on Kizo carrier, transfer means for transferring the developer image of the image bearing member onto a recording material If, in an image forming apparatus and a fixing unit configured to fix the developer transferred before type recording medium,
Charging voltage applying means for applying a charging voltage to the charging means;
A transfer voltage applying means for applying a transfer voltage to the transfer means ,
After the transfer voltage is applied to the transfer means by the transfer voltage application means to transfer the developer image to the recording material, the charging voltage is applied to the transfer means by applying the charging voltage by the charging voltage application means. And applying a cleaning voltage for cleaning the transfer means . 前記クリーニング電圧は、前記転写電圧とは逆極性の電圧であって、前記転写手段に付着した現像剤をクリーニングするための電圧であることを特徴とする請求項１に記載の画像形成装置。 The image forming apparatus according to claim 1 , wherein the cleaning voltage is a voltage having a polarity opposite to that of the transfer voltage, and is a voltage for cleaning the developer attached to the transfer unit . 前記転写手段により前記記録材に前記現像剤像を転写する際に、前記転写電圧印加手段により印加される前記転写電圧は、前記帯電電圧によって生じる変動分が調整された転写電圧であることを特徴とする請求項１または２に記載の画像形成装置。 When transferring the developer image onto the recording material by the transfer unit, the transfer voltage applied by the transfer voltage applying unit is a transfer voltage in which a variation caused by the charging voltage is adjusted. The image forming apparatus according to claim 1 or 2 . 前記転写手段により前記記録材に前記現像剤像を転写する際に、前記帯電電圧印加手段と前記転写電圧印加手段により前記帯電手段と前記転写電圧とがそれぞれ印加され、
前記帯電電圧印加手段によって印加される前記帯電電圧を変更した場合、変更した該帯電電圧の値に応じて前記転写電圧印加手段によって印加される前記転写電圧を変更することを特徴とする請求項１乃至３のいずれかに記載の画像形成装置。 When the developer image is transferred to the recording material by the transfer unit, the charging unit and the transfer voltage are respectively applied by the charging voltage applying unit and the transfer voltage applying unit,
If you change the charging voltage applied by the charge voltage application means, claim, characterized in that for changing the transfer voltage applied by the transfer voltage applying means according to the value of the modified the charging voltage 1 4. The image forming apparatus according to any one of items 1 to 3. 像担持体を帯電させる帯電手段と、前記像担持体に形成された潜像を現像剤を用いて現像する現像手段と、前記像担持体の現像剤像を記録材に転写する転写手段と、を備える画像形成装置の高圧電源装置において、
前記帯電手段に帯電電圧を印加する帯電電圧印加手段と、
前記転写手段に転写電圧を印加する転写電圧印加手段と、を備え、
前記転写手段をクリーニングする際に、前記転写電圧印加手段によって前記転写電圧を印加せずに、前記帯電電圧印加手段により前記帯電電圧を印加することを特徴とする高圧電源装置。 A charging means for charging the image bearing member, prior to a developing unit for developing with the current image agent a latent image formed on Kizo carrier, transfer means for transferring the developer image of the image bearing member onto a recording material In a high voltage power supply device of an image forming apparatus comprising:
Charging voltage applying means for applying a charging voltage to the charging means;
A transfer voltage applying means for applying a transfer voltage to the transfer means,
A high-voltage power supply apparatus , wherein when the transfer unit is cleaned, the charging voltage is applied by the charging voltage application unit without applying the transfer voltage by the transfer voltage application unit .