Abstract: A belt device includes a movable belt, a detection target, an optical detector, and a cleaner. The belt is looped around a plurality of supporting members. The detection target is disposed extending along a direction of belt movement on at least one side of the belt in a width direction of the belt intersecting with the don of belt movement. The optical detector detects the detection target. The cleaner is attached to at least one of the plurality of supporting members to clean the detection target.

Abstract: A belt device includes a movable belt, a detection target, an optical detector, and a cleaner. The belt is looped around a plurality of supporting members. The detection target is disposed extending along a direction of belt movement on at least one side of the belt in a width direction of the belt intersecting with the don of belt movement. The optical detector detects the detection target. The cleaner is attached to at least one of the plurality of supporting members to clean the detection target.

Abstract: An earthquake resisting apparatus includes a load transmitting member which has a surface area larger than an installation area of an installation object, a movement limiting member which is arranged between the load transmitting member and an installation floor, the movement limiting member being bonded to the load transmitting member and having a coefficient of static friction between the movement limiting member and the installation floor when a load acts on the installation object in a horizontal direction in a state in which the installation object is fixed to the load transmitting member, in which the coefficient is larger than or equal to a predetermined value, and a fastening part which connects the installation object and the earthquake resisting apparatus.

Abstract: A fixing unit includes: a heating roller; a pressing roller that is capable of being in pressure contact with the heating roller; a compressor that generates compressed air; an air tank that reserves therein the compressed air; a first pipe through which the compressed air generated by the compressor is fed into the air tank; an injection nozzle that is formed by the heating roller and the pressing roller and that causes the compressed air to blow a printing medium fed from the fixing nip; a second pipe through which the compressed air reserved in the air tank is fed into the injection nozzle; and a compressed air injection solenoid valve that is provided in middle of the second pipe. A droplet separator for separating a droplet from the compressed air is provided to the first pipe or to the second pipe.

Abstract: An image forming apparatus is disclosed that includes a fixing device including: a fixing member; and a pressure member configured to be pressed against the fixing member in order to form a nip portion, wherein a sheet configured to be fed into the nip portion in order to fix unfixed toner image thereon; a compressor configured to supply compressed air; a nozzle configured to be disposed at an outlet side of the nip portion and to blast the compressed air to an adhered portion of the sheet to the fixing member; and a controller configured to correct open-time of the nozzle based on image forming condition and to control number of times that the compressed air is blasted to the sheet in accordance with length of corrected open-time, wherein the open-time of the nozzle is determined in accordance with basis weight of the sheet.

Abstract: An earthquake resisting apparatus includes a load transmitting member which has a surface area larger than an installation area of an installation object, a movement limiting member which is arranged between the load transmitting member and an installation floor, the movement limiting member being bonded to the load transmitting member and having a coefficient of static friction between the movement limiting member and the installation floor when a load acts on the installation object in a horizontal direction in a state in which the installation object is fixed to the load transmitting member, in which the coefficient is larger than or equal to a predetermined value, and a fastening part which connects the installation object and the earthquake resisting apparatus.

Abstract: A fixing unit includes: a heating roller; a pressing roller that is capable of being in pressure contact with the heating roller; a compressor that generates compressed air; an air tank that reserves therein the compressed air; a first pipe through which the compressed air generated by the compressor is fed into the air tank; an injection nozzle that is formed by the heating roller and the pressing roller and that causes the compressed air to blow a printing medium fed from the fixing nip; a second pipe through which the compressed air reserved in the air tank is fed into the injection nozzle; and a compressed air injection solenoid valve that is provided in middle of the second pipe. A droplet separator for separating a droplet from the compressed air is provided to the first pipe or to the second pipe.

Abstract: An image forming apparatus includes a guide member configured to guide a sheet to a nip section between a heating roller and a pressing roller disposed close to the upstream side of the rollers and on the pressing roller side. A downstream end of the guide member is disposed on the heating roller side with respect to the nip surface between the rollers so that a header of the sheet to be printed is in contact with the heating roller first, and a downstream end of the fixing device introduction guide member is concavely curved.

Abstract: An image forming apparatus is disclosed that includes a fixing device including: a fixing member; and a pressure member configured to be pressed against the fixing member in order to form a nip portion, wherein a sheet configured to be fed into the nip portion in order to fix unfixed toner image thereon; a compressor configured to supply compressed air; a nozzle configured to be disposed at an outlet side of the nip portion and to blast the compressed air to an adhered portion of the sheet to the fixing member; and a controller configured to correct open-time of the nozzle based on image forming condition and to control number of times that the compressed air is blasted to the sheet in accordance with length of corrected open-time, wherein the open-time of the nozzle is determined in accordance with basis weight of the sheet.

Abstract: An image forming apparatus is disclosed in which a guide member configured to guide a sheet to a nip section between a heating roller and a pressing roller is disposed close to the upstream side of the rollers and on the pressing roller side. A downstream end of the guide member is disposed on the heating roller side with respect to the nip surface between the rollers so that a header of the sheet to be printed is in contact with the heating roller first, and a downstream end of the fixing device introduction guide member is concavely curved.

Abstract: A cleaning device for a fixing unit includes a winding shaft for holding a cleaning web and a sensor for detecting a trailing end of a cleaning web. A notched portion is formed in a winding shaft at a position opposing a detecting position of said sensor.

Abstract: In a cleaning device for a fixing unit, a notched portion is formed in a winding shaft, which has an unused web wound therearound, at a position opposing a detecting position of a sensor. Accordingly, when a trailing end of the web comes to be exposed, and the web is disengaged from the wining shaft, the sensor measures the diameter of the notched portion, so that the diameter changes substantially. For this reason, an output of the sensor also changes substantially, and the trailing end of the web can be detected easily without being affected by the sensitivity of the sensor.

Abstract: An electrophotographic apparatus having an image carrying and an optical scanning unit, wherein an optical scanning unit support means is provided, the optical scanning unit support means serving to turn the optical scanning unit in a horizontal direction, so that an error in positioning the image carrying body with respect to the optical scanning unit can be corrected by the turning operation.