JPH01146258U

JPH01146258U -

Info

Publication number: JPH01146258U
Application number: JP4035288U
Authority: JP
Priority date: 1988-03-29
Filing date: 1988-03-29
Publication date: 1989-10-09

Description

[Brief explanation of the drawing]

第１図は本考案の実施例を示す側面図、第２図
は熱ローラ定着装置の一般的な構造に示す側面図
、第３図は定着ローラ対のニツプ部を拡大して示
す断面図である。１……定着ローラ、２……加圧ローラ、２ａ…
…加圧ローラ軸、３……加圧レバー、４……加圧
スプリング、７……定着入口ガイド板、８……加
圧レバー支点、９……ニツプ部。 Fig. 1 is a side view showing an embodiment of the present invention, Fig. 2 is a side view showing the general structure of a heat roller fixing device, and Fig. 3 is a sectional view showing an enlarged nip portion of a pair of fixing rollers. be. 1... Fixing roller, 2... Pressure roller, 2a...
... Pressure roller shaft, 3 ... Pressure lever, 4 ... Pressure spring, 7 ... Fixing entrance guide plate, 8 ... Pressure lever fulcrum, 9 ... Nip section.

Claims

[Claims for Utility Model Registration] (1) A hard fixing roller whose shaft center position is fixed, and a pressure spring that presses the shaft in the direction of the fixing roller via a pressure lever so that the shaft is brought into pressure contact with the fixing roller.
A pressure roller having a rubber layer on the surface layer is provided, and a transfer paper carrying an unfixed toner image is guided by a guide member into the nip portion of the pair of rollers, and is conveyed while being held between the pair of rollers. A fixing device for fixing a toner image on a transfer paper, characterized in that the guide member described above is formed integrally with a pressure lever. (2) The height of the guide member is displaceable according to the movement of the pressure lever so that the relative height between the fixing roller and the entrance of the nip portion is maintained approximately constant. The fixing device described.