Canon Kabushiki Kaisha

Masashi Sawada

Youichi Chikugo

Seiichiro Kameda

Taiya Hirayama

Hiroki Takayama

Yoichi Furuyama

An image reading apparatus connected to a conveying apparatus to convey a recording medium to which a toner image is fixed includes a conveying unit and a reading unit having a transparent member, a reading sensor, a housing supporting, and a fan. The conveying unit receives the recording medium discharged from the conveying apparatus and conveys the recording medium. The reading unit is positioned downstream of the conveying unit in a conveying direction of the recording medium. The reading sensor read a housing supporting image information about an image on the recording medium through the transparent member. The housing supports the reading sensor and defines, together with the transparent member, an accommodation space configured to accommodate the reading sensor. The fan is positioned in the accommodation space and circulates air in the accommodation space.

Image reading apparatus and image forming system to address rise in temperature of a reading sensor with the use of a fan within a reading sensor housing

Image forming apparatus

An image forming apparatus includes a heat source, a toner containing member containing toner, and an electric fan for generating air flow in an air flow path formed between the heat source and the toner containing member. In the image forming apparatus, a temperature of the heat source reaches a glass transition point of the toner. After the electric fan is changed from a driving state to a rest state, a phase transition member for absorbing heat is disposed in a heat transfer path, in which heat transfers, from the heat source to the toner containing member.

The present invention provides an image heating apparatus capable of holding an open/close unit at a normal position and capable of inexpensively avoiding conveyance failure and deterioration in image quality. An image heating apparatus includes a fixing an rollerand a pressing belt, a pressing mechanismwhich rotates a pressing belt unithaving a pressing beltto retract the pressing beltfrom a pressing contact position, a separation projectionwhich separates the sheet S from the pressing belt, and an open/close unitwhich rotates a separating unit (separation projection, division plate) to retract the separation projectionfrom a separating position. The pressing belt unitincludes a push-up memberwhich locks the separating unit located in the separating position when the pressing belt unitis in the pressing contact position.

Image heating apparatus

The present invention provides an image heating apparatus which can easily attach and detach an external heating unit and easily perform a maintenance operation. The image heating apparatus has a fixing apparatus framewhich rotatably supports a fixing roller, a unit including a pressure springwhich urges an external heating rollertoward the fixing roller, a pressure guide shaftwhich holds the pressure spring, and a pressure staywhich slidably supports the pressure guide shaft, a screwwhich detachably fixes the unit to the fixing apparatus framevia the pressure stay, and a pressure releasing armwhich releases the force of the pressure springacting on the screwvia the pressure stayby sliding the pressure guide shaftrelative to the pressure stay

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Abiko, Japan

Masashi Sawada