JP2017062445A5

JP2017062445A5 -

Info

Publication number: JP2017062445A5
Application number: JP2015188989A
Authority: JP
Filing date: 2015-09-25
Publication date: 2018-01-25
Anticipated expiration: 2035-09-25

Description

本発明は、上記課題を解決するために、印刷媒体上に現像剤像を形成する画像形成部と、前記印刷媒体上の前記現像剤像を加熱する定着部材と、前記定着部材を加圧する加圧部材と、前記加圧部材の、前記印刷媒体の搬送方向下流側に配置された送風手段と、を備え、前記送風手段を、前記印刷媒体を挟んで前記加圧部材側から前記定着部材側へ送風するように配置し、前記定着部材の、前記印刷媒体の非通過領域の表面温度を所定の温度以下に保つように、前記送風手段の風量を制御する制御部を設けたことを特徴とする。 In order to solve the above problems, the present invention provides an image forming unit that forms a developer image on a print medium, a fixing member that heats the developer image on the print medium, and a pressure member that pressurizes the fixing member. and member, wherein the pressure member, e Bei and a blowing means disposed at the conveying direction downstream side of the print medium, said blowing means, said fixing member from said pressure member side across the printing medium And a controller for controlling the air volume of the blowing means so as to keep the surface temperature of the non-passage area of the print medium of the fixing member below a predetermined temperature. And

Claims

An image forming unit for forming a developer image on a print medium;
A fixing member for heating the developer image on the print medium;
A pressure member that pressurizes the fixing member;
Of the pressing member, Bei give a, a blowing means disposed downstream in the conveyance direction of the print medium,
The air blowing means is disposed so as to blow air from the pressure member side to the fixing member side with the print medium interposed therebetween,
An image forming apparatus, comprising: a control unit that controls an air volume of the blowing unit so that a surface temperature of a non-passage area of the print medium of the fixing member is kept below a predetermined temperature.

The image forming apparatus according to claim 1.
The image forming apparatus, wherein the blowing unit blows air toward a region of the fixing member that is larger than a minimum width of the print medium and less than a maximum width.

The image forming apparatus according to claim 1, wherein:
Wherein, wherein when the print medium is less than passable maximum width, an image forming apparatus which is characterized in that the blowing by the blowing means.

The image forming apparatus according to any one of claims 1 to 3,
First temperature detecting means for detecting a surface temperature of a passage region of the print medium of the fixing member;
A second temperature detecting means for detecting a surface temperature of a non-passing area of the print medium of the fixing member;
The control unit switches the air volume of the blowing unit based on a temperature difference obtained by subtracting the detected temperature of the first temperature detecting unit from the detected temperature of the second temperature detecting unit. .

The image forming apparatus according to claim 4.
The air volume of the blowing means is composed of a first air volume that decreases the surface temperature of the non-passing area of the fixing member and a second air volume that gradually increases the surface temperature of the non-passing area of the fixing member. An image forming apparatus.

The image forming apparatus according to claim 5.
The controller switches to the first air volume when the temperature difference is equal to or greater than a first predetermined temperature difference, and the temperature difference is less than a second predetermined temperature difference that is smaller than the first predetermined temperature difference. The image forming apparatus is switched to the second air volume when the airflow is reached.