摘要:
In an embodiment of the present invention, a pressure application mechanism portion is provided with a pressure-varying link structure arranged so as to be movable in lateral directions along an upper end portion of a device frame, a drive shaft having an eccentric cam for moving the pressure-varying link structure in the lateral directions, a shaft holding structure arranged so as to be rotatable coupled to the pressure-varying link structure, and a coil spring for applying a biasing force to the shaft holding structure in one direction along the upper end portion of the device frame, and a rotational movement is carried out to make a pressure roller approach and move away from a heat roller so as to achieve a relatively low pressure during a color processing mode and a relatively high pressure during a monochrome processing mode.
摘要:
In an embodiment of the present invention, a pressure application mechanism portion is provided with a pressure-varying link structure arranged so as to be movable in lateral directions along an upper end portion of a device frame, a drive shaft having an eccentric cam for moving the pressure-varying link structure in the lateral directions, a shaft holding structure arranged so as to be rotatable coupled to the pressure-varying link structure, and a coil spring for applying a biasing force to the shaft holding structure in one direction along the upper end portion of the device frame, and a rotational movement is carried out to make a pressure roller approach and move away from a heat roller so as to achieve a relatively low pressure during a color processing mode and a relatively high pressure during a monochrome processing mode.
摘要:
A fixing device includes a feeding roller for feeding a belt-shaped cleaning member which has been rolled up, and a winding roller for taking up the cleaning member which has been fed from the feeding roller and cleaned a surface of the fixing roller, the winding roller being provided so as to pressure-contact the feeding roller. The winding roller is rotated by a time control due to a control portion so that a sum of a feed amount of the cleaning member which is fed by the feeding roller at one feeding occasion, and a take-up amount of the cleaning member which is taken up by the winding roller at one take-up occasion, is equal to or more than a double of a length Ln of a nip section.
摘要:
A fixing device includes a feeding roller for feeding a belt-shaped cleaning member which has been rolled up, and a winding roller for taking up the cleaning member which has been fed from the feeding roller and cleaned a surface of the fixing roller, the winding roller being provided so as to pressure-contact the feeding roller. The winding roller is rotated by a time control due to a control portion so that a sum of a feed amount of the cleaning member which is fed by the feeding roller at one feeding occasion, and a take-up amount of the cleaning member which is taken up by the winding roller at one take-up occasion, is equal to or more than a double of a length Ln of a nip section.
摘要:
In one embodiment, the fixing apparatus of the present invention is a fixing apparatus in which while recording paper is transported sandwiched between a heating roller and a pressure roller that are pressed against each other, the recording paper is guided by a guide member, and heat and pressure are applied to the recording paper to fix toner on the recording paper, the fixing apparatus configured with the guide member rotatably provided such that the guide member can be removed from the transport path of the recording paper, and the center of rotational movement of the guide member matched with a shaft of the heating roller or a shaft of the pressure roller.
摘要:
In one embodiment, the fixing apparatus of the present invention is a fixing apparatus in which while recording paper is transported sandwiched between a heating roller and a pressure roller that are pressed against each other, the recording paper is guided by a guide member, and heat and pressure are applied to the recording paper to fix toner on the recording paper, the fixing apparatus configured with the guide member rotatably provided such that the guide member can be removed from the transport path of the recording paper, and the center of rotational movement of the guide member matched with a shaft of the heating roller or a shaft of the pressure roller.
摘要:
In an image forming system in which a main body apparatus that forms an image and a plurality of optional apparatuses that can be retrofitted to the main body apparatus are combined, so that a sheet of recording material bearing on one side an image formed in an image forming section in the main body apparatus is switched back and then transported again to the image forming section, thereby allowing images to be formed on both the main and back sides of the sheet of recording material, of the plurality of optional apparatuses to be retrofitted to the main body apparatus, a specific optional apparatus is provided with a sheet receiving section for supporting the sheet of recording material to be switched back, at a portion opposite to the main body apparatus.
摘要:
A cleaning device includes a cleaning web, a supply roller, a take-up roller, and a control section. Positioned in contact with a circumferential surface of a fuser roller, the web removes toner particles on the circumferential surface. The supply roller has the web wound thereon. The take-up roller takes up the web withdrawn from the supply roller. The control section controls rotation of the take-up roller. The control section performs a first process of causing the take-up roller to take up a first length of the web each time a predetermined taking-up condition is satisfied. The control section also performs a second process, instead of the first process, of causing the take-up roller to take up a second length of the web each time after a first predetermined number of the first processes are performed.
摘要:
A fuser unit with a cleaning mechanism, including: a set of a heat roller and a pressure roller for sandwiching a recording sheet while heating the recording sheet by the heat roller; a feed roller for feeding a band-shaped cleaning member which is windable; a press roller for pressing the fed cleaning member against a surface of the heat roller or the pressure roller; a wind roller for winding the cleaning member which is pressed by the press roller; and a first reverse rotation preventing mechanism for preventing rotation of the press roller from rotating in the opposite direction to the winding direction of the cleaning member.
摘要:
A cleaning device includes a cleaning web, a supply roller, a take-up roller, and a control section. Positioned in contact with a circumferential surface of a fuser roller, the web removes toner particles on the circumferential surface. The supply roller has the web wound thereon. The take-up roller takes up the web withdrawn from the supply roller. The control section controls rotation of the take-up roller. The control section performs a first process of causing the take-up roller to take up a first length of the web each time a predetermined taking-up condition is satisfied. The control section also performs a second process, instead of the first process, of causing the take-up roller to take up a second length of the web each time after a first predetermined number of the first processes are performed.