| 摘要 |
PURPOSE:To minimize the temp. fluctuation on the surface of a heat fixing roller by accumulating once the heat supplied from a heat source in a latent heat accumulating material packed in a rotating body for heat fixing then transferring the same to the surface of the heat fixing roller. CONSTITUTION:A stationary base material cylinder 14 consisting of a metal such as aluminum and a base material cylinder 12 under rotation are concentrically disposed on the inside and outside apart at a prescribed spacing from each other and the latent heat accumulating material 13 is packed into such spacing 15. Pentaerythritol which is the main heat accumulating body absorbs heat via the cylinder 14 heated by a halogen heater 2 provided therein and is accumulated at 188 deg.C. The pentaerythritol in which the heat is accumulated is effectively agitated by fins 16 when the outside cylinder 12 of the heat fixing roller 1 rotates. The cylinder 12 is thus maintained at the extremely stable temp. of 175-178 deg.C. |
