IMAGE FORMING APPARATUS

To obtain sufficient bonding strength without setting too high a heating temperature in a bonding process.SOLUTION: An image forming apparatus comprises: image forming means (1e) that forms toner images on a sheet by using printing toners (Ty, Tm, Tc) and applies a powder adhesive (Tn) to the sheet;...

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Bibliographische Detailangaben
Hauptverfasser: TAMURA SHIGETO, TSURUYA TAKAAKI, MATSUDA KOHEI, NISHIZAWA YUKI, SHIMANO TSUTOMU
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To obtain sufficient bonding strength without setting too high a heating temperature in a bonding process.SOLUTION: An image forming apparatus comprises: image forming means (1e) that forms toner images on a sheet by using printing toners (Ty, Tm, Tc) and applies a powder adhesive (Tn) to the sheet; fixing means (6) that fixes the toner images to the sheet; folding means (31) that folds the sheet passing through the fixing means with the surface applied with the powder adhesive inside; and bonding means (32) that heats the sheet folded by the folding means to bond the sheet with the powder adhesive. When the highest attainable temperature of the powder adhesive when it is heated by the fixing means is Tmax1, and the highest attainable temperature of the powder adhesive when it is heated by the bonding means is Tmax2, Tmax1>Tmax2 is satisfied.SELECTED DRAWING: Figure 1 【課題】接着工程における加熱温度を過度に高く設定することなく、十分な接着強度を得る。【解決手段】画像形成装置は、印刷用トナー(Ty,Tm,Tc)を用いてシートにトナー像を形成し、かつ、粉末接着剤(Tn)をシートに塗布する画像形成手段(1e)と、トナー像をシートに定着させる定着手段(6)と、定着手段を通過したシートを、粉末接着剤が塗布された面を内側にして折り畳む折り手段(31)と、折り手段により折り畳まれたシートを加熱して、粉末接着剤によりシートを接着する接着手段(32)と、を備える。定着手段によって加熱される時の粉末接着剤の最高到達温度をTmax1、接着手段によって加熱される時の粉末接着剤の最高到達温度をTmax2とすると、Tmax1>Tmax2である。【選択図】図1