JPS62104265U

JPS62104265U -

Info

Publication number: JPS62104265U
Application number: JP19816985U
Authority: JP
Priority date: 1985-12-23
Filing date: 1985-12-23
Publication date: 1987-07-03

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す定着装置の断
面図、第２図は定着ローラー対のニツプ部形状を
示す側面図、第３図は第二の実施例を示す定着装
置の側面図、第４図、第５図は本考案の実験に使
用した画像形成装置の部分側面図、第６図はカー
ルの高さの測定方法を示す斜視図を示す。 FIG. 1 is a cross-sectional view of a fixing device showing one embodiment of the present invention, FIG. 2 is a side view showing the shape of the nip portion of a pair of fixing rollers, and FIG. 3 is a side view of the fixing device showing a second embodiment. , 4 and 5 are partial side views of an image forming apparatus used in experiments of the present invention, and FIG. 6 is a perspective view showing a method for measuring curl height.

Claims

[Scope of utility model registration request]

In the fixing device having a pair of fixing rollers including a heating roller with a built-in heater and an elastic pressure roller in pressure contact with the heating roller, and a pair of paper feed rollers in pressure contact with each other downstream of the pair of fixing rollers, the above-mentioned fixing device is provided. The contact portion of the pair of paper feed rollers is perpendicular to a line connecting the center of the heating roller and the center of the pressure roller,
The transfer paper is positioned on the pressure roller side with respect to a line passing through the nip portion of the fixing roller, and the time required for the transfer paper to pass through the nip portion of the pair of fixing rollers and to be sandwiched between the pair of rollers is set to 0. A fixing device characterized in that the distance between the pair of fixing rollers and the pair of paper feeding rollers is set to a distance corresponding to the above time when the time is 3 seconds or less.