摘要:
A fixing device is provided in which a rotation member and a roller are caused to rotate pressing against each other, a recording paper is sandwiched and transported in a nip region between the rotation member and the roller, a leading edge of a peeling plate is positioned with respect to a peripheral surface of the rotation member, and the recording paper is separated from the rotation member by the peeling plate. In this fixing device, a surface of the peeling plate faces a transport route of the recording paper. Furthermore, in this fixing device, a contact member is provided that contacts a rear surface of the peeling plate displaced in a direction in which the leading edge of the peeling plate approaches the peripheral surface of the rotation member and prohibits displacement of the peeling plate after contact of the peeling plate to the contact member.
摘要:
A fixing apparatus of the present invention includes a fixing rotation member, a rotation drive portion that rotates the fixing rotation member, a cleaning web sheet that cleans a circumferential surface of the fixing rotation member, a cleaning web sheet roller that takes up or feeds out the cleaning web sheet, a swing cam rotationally driven by the rotation drive portion, a rotation transmission portion that transmits a rotation drive force to the cleaning web sheet roller, a one way clutch provided on an input shaft of the rotation transmission portion, and a swing lever connected to the one way clutch and biased so as to be brought into slide contact with the swing cam.
摘要:
An embodiment of the present invention includes a fixing member; a pressure member for pressing against the fixing member so as to form a nip region between the pressure member and the fixing member; a pressure cancellation unit for pressing the pressure member against the fixing member and for cancelling the state in which the pressure member is pressed against the fixing member; a paper detachment member for detaching paper held between the fixing member and the pressure member in the nip region from the pressure member; and a separation mechanism for cleaning the paper detachment member by separating the paper detachment member from the pressure member in conjunction with a pressure cancellation operation of the pressure cancellation unit.
摘要:
An embodiment of the present invention includes a fixing member; a pressure member for pressing against the fixing member so as to form a nip region between the pressure member and the fixing member; a pressure cancellation unit for pressing the pressure member against the fixing member and for cancelling the state in which the pressure member is pressed against the fixing member; a paper detachment member for detaching paper held between the fixing member and the pressure member in the nip region from the pressure member; and a separation mechanism for cleaning the paper detachment member by separating the paper detachment member from the pressure member in conjunction with a pressure cancellation operation of the pressure cancellation unit.
摘要:
A fixing apparatus of the invention includes a pressure roller 6 and a fixing roller 7 that make press-contact with each other and an oil roller 8 that makes press-contact with either the pressure roller 6 or the fixing roller 7, and passes a recording sheet through a nip area between the pressure roller 6 and the fixing roller 7 to fix toner on the recording sheet. The fixing apparatus also includes: a pressure roller gear 21 and an oil roller gear 22 that transmit a rotation of a shaft of the pressure roller 6 that makes press-contact with the oil roller 8 to a shaft of the oil roller 8; and a one-way clutch 23 that causes the oil roller 8 to idly rotate in a direction of a driven rotation when the oil roller 8 is driven to rotate by pressing against the pressure roller 6.
摘要:
A fixing apparatus of the invention includes a pressure roller 6 and a fixing roller 7 that make press-contact with each other and an oil roller 8 that makes press-contact with either the pressure roller 6 or the fixing roller 7, and passes a recording sheet through a nip area between the pressure roller 6 and the fixing roller 7 to fix toner on the recording sheet. The fixing apparatus also includes: a pressure roller gear 21 and an oil roller gear 22 that transmit a rotation of a shaft of the pressure roller 6 that makes press-contact with the oil roller 8 to a shaft of the oil roller 8; and a one-way clutch 23 that causes the oil roller 8 to idly rotate in a direction of a driven rotation when the oil roller 8 is driven to rotate by pressing against the pressure roller 6.
摘要:
A shifting mechanism includes a guide plate, a bearing, a rotating shaft, a delivery roller, and a bearing unit. The shifting mechanism delivers a sheet of paper along a delivery passage and offsets the sheet horizontally and perpendicularly to the passage while delivering it. The guide plate has an opening forming part of the delivery passage and an end hole formed through the front end of the plate horizontally and perpendicularly to the passage. The rotating shaft extends through the end hole. The delivery roller is fixed to the rotating shaft. The sheet passes through the nip between the delivery roller and the guide plate. The bearing unit extends movably through the end hole and includes a sleeve, which supports the rotating shaft horizontally and perpendicularly to the delivery passage. The bearing unit rotates the rotating shaft.
摘要:
A sheet feeding apparatus includes first and second sheet sensors provided in order from upstream to downstream sides in feeding direction on a paper feed path, sheet conveyor roller sets arranged along the path, and a roller controller individually controlling groups of rollers on the upstream and downstream sides of the first sheet sensor, in response to a change in values of output signals from first and second sheet sensors. The roller controller includes an overlapped feeding determining device outputting a determination signal assuming a first value when overlapped feeding occurs and a second value otherwise, in response to the change in values of the output signals from the sensors, an overlapped feeding eliminating device eliminating overlapped feeding by controlling the roller controller upon receiving the determination signal of the first value, and a conveyor roller stopping device stopping the sheet conveyor rollers if the overlapped feeding eliminating process should fail.
摘要:
In the present glossy paper, an opposite surface of a glossed and smooth image formation surface is rough-surfaced. Therefore, the glossy paper do not adhere together even under the high-temperature and high-humidity environment. In fact, the present invention provides glossy paper which can advantageously achieve a continuous paper feeding in the image forming apparatus regardless of the use environment conditions.
摘要:
A transport path switching unit is provided between transport rollers and pre-registration rollers, and control is performed to switch between a main transport path and an extended transport path of the transport path switching unit such that either the main transport path or the extended transport path is interposed as the part of the paper transport path between the transport rollers and the pre-registration rollers to vary a total length of the paper transport path.