Image forming apparatus

Abstract

Abstract Translated from Japanese 【課題】１つの像担持体に、色ごとに表面電位形成、静電潜像形成、現像を順に繰り返して多色トナー像を形成し、その多色トナー像を転写定着部材に一括１次転写するタイプのカラー画像形成装置において、小型化および省エネルギを達成する。 【解決手段】１つの像担持体４０に、色ごとに表面電位形成、静電潜像形成、現像を順に繰り返して多色トナー像を形成し、その多色トナー像を一次転写位置Ｐ１で転写定着部材２３に一括一次転写する。そのような画像形成装置において、転写定着部材の回転方向にあって一次転写位置Ｐ１の直前を冷却する冷却手段を備える。冷却手段としては、例えば転写定着部材より低温の冷却部材を転写定着部材に接触して備える。一次転写後に加熱溶融された転写定着部材上の多色トナー像を二次転写する二次転写装置２７を備え、被転写材３０に転写同時定着する。 【選択図】図１ A multicolor toner image is formed on a single image carrier by sequentially repeating surface potential formation, electrostatic latent image formation, and development for each color, and the multicolor toner image is transferred to a transfer fixing member as a primary transfer. In this type of color image forming apparatus, miniaturization and energy saving are achieved. A multicolor toner image is formed on one image carrier 40 by repeating surface potential formation, electrostatic latent image formation, and development in order for each color, and the multicolor toner image is transferred at a primary transfer position P1. Batch primary transfer to the fixing member 23 is performed. Such an image forming apparatus includes a cooling unit that cools immediately before the primary transfer position P1 in the rotation direction of the transfer fixing member. As the cooling means, for example, a cooling member having a temperature lower than that of the transfer fixing member is provided in contact with the transfer fixing member. A secondary transfer device 27 for secondary transfer of the multicolor toner image on the transfer fixing member heated and melted after the primary transfer is provided, and is simultaneously transferred and fixed to the transfer material 30. [Selection] Figure 1

Inventors

• 👤 Takashi Fujita
• 👤 貴史 藤田
• 👤 Shin Kayahara
• 👤 伸 茅原
• 👤 Takashi Seto
• 👤 隆 瀬戸
• 👤 Takeshi Takemoto
• 👤 武 竹本
• 👤 Hiromitsu Takagaki
• 👤 高垣　　博光
• 👤 Hiroomi Tamura
• 👤 博臣 田村
• 👤 Kazumi Suzuki
• 👤 一己 鈴木

Bibliographic Details