Abstract: An image forming apparatus capable of obtaining an image of a desired quality by a simple method is provided with an image forming device for forming a toner image on a recording material, a plurality of pairs of fixing rollers provided to fix the toner image, a glossiness detecting sensor for detecting the state of the image on the recording material on which the toner image has been fixed, and a controller for controlling the fixing conditions of the plurality of pairs of fixing rollers, and has a first image check mode for fixing the toner image by one pair of fixing rollers of the plurality of pairs of fixing rollers, and a second image check mode for fixing the toner image by the plurality of pairs of fixing rollers, and the controller selects whether the second image check mode should be executed, on the basis of the result of the glossiness detecting sensor having detected the state of the image on the recording material on which the formed image has been fixed by the first image check mode.

Abstract: An image forming apparatus that is capable of normally performing second side printing on a transfer material, even if the transfer material put on standby after completion of first side printing is pulled out by a user. A transfer material having image formed on its first side is fed until it is partly exposed to the outside of a printer, and is then fed to a refeeding path in the printer and further fed to a standby position prior to image formation on the second side of the transfer material. When it is detected that the transfer material caused to stop at the standby position is pulled out by a user, a warning to stop pulling out the transfer material is given to the user.

Abstract: An image forming system has an image forming device for forming an image on a recording material in accordance with a set width of the recording material, and an image heating member. A first detecting member which detects a temperature of a first region of the image heating member, the first region corresponding to an outside region of a contact area, the contact area being contactable with a recording material having the set width, a second detecting member which detects a temperature of a second region of the image heating member, the second region corresponding to an inside region of the contact area, a cooling portion cools the first region of the image heating member in accordance with an output of the first detecting member, and a notification portion notifies that the set width of the recording material is wrong in accordance with an output of the first detecting member and an output of the second detecting member.

Abstract: An image forming apparatus includes an image forming apparatus body and a peripheral unit operable to transport a recording medium. The image forming apparatus includes a communication device for communicating with the peripheral unit and a controller for controlling transporting the recording medium by the peripheral unit using a communication by the communication device. The controller sets a plurality of transport speeds, each of which corresponds to a predetermined identification code, to the peripheral unit and specifies the transport speed by using the predetermined identification code to the peripheral unit.

Abstract: An image forming apparatus changes over an electric potential on an image bearing member in response to an attenuation region in which a remaining potential on a developing member is attenuating after a developing bias applied to the developing member has been turned off after completion of an image forming operations. Accordingly, it is possible to mitigate adherence of developer due to a large potential difference between the developing member and the image bearing member.

Abstract: An adjustment time reduction mode of reducing adjustment operation time is provided such that a user can set the adjustment time reduction mode in which a user arbitrarily reduces the adjustment operation time, depending on the user's situation. An apparatus performing adjustment operation at a predetermined timing, monitors a timing at which the adjustment operation is to be performed and visually notifies a user of the timing at which the adjustment operation is to be performed before execution of a job requested by the user. When the adjustment time reduction mode is set, the apparatus reduces a time for the adjustment operation during execution of the job requested by the user, and the apparatus is caused to operate in the adjustment time reduction mode until the job is completed.

Abstract: A sheet processing apparatus which is capable of improving operability while suppressing an increase in apparatus size. In a front cover insertion mode, an insertion sheet for a front cover is inserted into a bundle of sheets on which images have been formed, and in a rear cover insertion mode, an insertion sheet for a rear cover is inserted into the bundle of sheets. Insertion sheets for the front cover and insertion sheets for the rear cover are set with the same orientation in a manual feed tray 105. An insertion sheet for the front cover stored in the manual feed tray 105 is conveyed to a finisher 500 in one of a face-down state and a face-up state. An insertion sheet for the rear cover stored in the manual feed tray 105 is conveyed to the finisher 500 in the other of the face-down state and the face-up state. The insertion sheets for the front cover and for the rear cover conveyed from the manual feed tray 105 and the sheets on which images have been formed are stacked on the finisher 500.

Abstract: An image forming apparatus which can facilitate acquisition of an image output bundle that has a uniform and optimal gloss level as a whole. An image forming apparatus 10 fixes a toner image on a plurality of sheets. An image ratio calculation unit 233 calculates a composition ratio of image types in a plurality of pages of image data. A gloss level control unit 250 provides a control for uniformly fixing toner images formed on the plurality of pages to the plurality of sheets based on the calculation result by the image ratio calculation unit 233.

Abstract: In an image forming apparatus which requires the user to manually input sheet medium information, (when a bundle of sheets which include a plurality of types of print media are to be printed, the user must manually input setups of the image forming apparatus for each individual print medium. In manual setups by the user, some setups require user's knowledge about print media. When the user has made wrong setups, a print result cannot be obtained under an appropriate control condition Furthermore, when information about a print medium is sensed by the sensor without manual setups, the information cannot be often precisely detect depending on the type and thickness of the print medium, an environment, and the like, and it is consequently difficult to attain optimal image formation. It is an object of this invention to attain optimal image formation, saving user labor and shortening the print time by using a radio tag attached to the sheet medium.

Abstract: In an image forming apparatus includes a containing device for containing waste toner which is recovered, and a near-end position detecting device that detects that the waste toner is at a near-end position in the containing device, and a judgment feature that the waste toner is full based on image judgement means for judging whether the container after detecting means detects that an amount of toner in the container is full of toner, based on image information of an image formed on a recording material and the adjustment by the adjusting means.

Abstract: An image forming apparatus for carrying out an image forming process with a detachably mountable image forming unit mounted thereon, when the mounting of the image forming unit has been detected, whether the mounted image forming unit is a new one is discriminated. Then, unit control information held by an information holding portion for holding unit control information corresponding to the image forming unit is updated on the basis of the results of discrimination at the last time and this time. By such a construction, image formation becomes executable on the mounted image forming unit always in an optimized state.

Abstract: A sheet processing apparatus which is capable of improving operability while suppressing an increase in apparatus size. In a front cover insertion mode, an insertion sheet for a front cover is inserted into a bundle of sheets on which images have been formed, and in a rear cover insertion mode, an insertion sheet for a rear cover is inserted into the bundle of sheets. Insertion sheets for the front cover and insertion sheets for the rear cover are set with the same orientation in a manual feed tray 105. An insertion sheet for the front cover stored in the manual feed tray 105 is conveyed to a finisher 500 in one of a face-down state and a face-up state. An insertion sheet for the rear cover stored in the manual feed tray 105 is conveyed to the finisher 500 in the other of the face-down state and the face-up state. The insertion sheets for the front cover and for the rear cover conveyed from the manual feed tray 105 and the sheets on which images have been formed are stacked on the finisher 500.

Abstract: An image heating apparatus including an image heater for heating an image on a recording material in a nip portion, an air blower for blowing air toward an air blowing port to cool a predetermined area of the image heater, and a shutter for opening an closing the air blowing port, wherein when recording materials change in width in the course of continuously executing an image heating process accompanied by a cooling operation, the shutter is kept opened until the number of recording materials after the change reaches a predetermined number, whereby the frequency of the driving of the shutter for the air blowing port when small size recording materials and large size recording materials are mixed-loaded and passed is reduced to thereby achieve the longer life of a shutter driving portion, the electric power saving of the apparatus and a reduction in opening-closing noise.

Abstract: An image forming apparatus that is capable of normally performing second side printing on a transfer material, even if the transfer material put on standby after completion of first side printing is pulled out by a user. A transfer material having image formed on its first side is fed until it is partly exposed to the outside of a printer, and is then fed to a refeeding path in the printer and further fed to a standby position prior to image formation on the second side of the transfer material. When it is detected that the transfer material caused to stop at the standby position is pulled out by a user, a warning to stop pulling out the transfer material is given to the user.

Abstract: An image forming apparatus that is capable of performing post-processing so as to ensure that sheets on which images are formed and inserted sheets are aligned in orientation when performing sheet insertion processing and post-processing in combination. The image forming apparatus is capable of having attached thereto a finisher that performs post-processing on sheets with images formed thereon. An insertion sheet is placed on one of sheet supply trays and a manual feed tray. An operating/display section controller inputs a post-processing instruction for causing the finisher to perform post-processing. A placing direction in which the insertion sheet is to be placed on one of the sheet supply trays and the manual feed tray is instructed according to the post-processing instruction input by the operating/display section.

Abstract: An image forming system has an image forming device, a first image heating device for heating a toner image at a first nip to maintain a target temperature, a second image heating device for heating a toner image at a second nip to maintain a target temperature, a selecting device for selecting a first image forming mode in which only the first image heating device is used for a image heating process and a second image forming mode in which the first image heating device and the second image heating device are used for the image heating process, and a delaying device for making timing at which the target temperature of the first image heating device is lowered in a stand by state later than a timing at which the target temperature of the second image heating device is lowered in the stand by state.

Abstract: An image forming apparatus changes over an electric potential on an image bearing member in response to an attenuation region in which a remaining potential on a developing member is attenuating after a developing bias applied to the developing member has been turned off after completion of an image forming operations. Accordingly, it is possible to mitigate adherence of developer due to a large potential difference between the developing member and the image bearing member.

Abstract: An image forming apparatus that is capable of normally performing second side printing on a transfer material, even if the transfer material put on standby after completion of first side printing is pulled out by a user. A transfer material having image formed on its first side is fed until it is partly exposed to the outside of a printer, and is then fed to a refeeding path in the printer and further fed to a standby position prior to image formation on the second side of the transfer material. When it is detected that the transfer material caused to stop at the standby position is pulled out by a user, a warning to stop pulling out the transfer material is given to the user.

Abstract: An image forming apparatus includes image forming means for forming an image on a recording material; a plurality of image heating means for sequentially heating an image on the recording material; and switching means for switching a number of the image heating means to be used for heating the image; setting means for manually setting an operating condition of at least one of the image heating means.

Abstract: An image forming apparatus changes over an electric potential on an image bearing member in response to an attenuation region in which a remaining potential on an image bearing member attenuates after a developing bias applied to the developing member has been turned off after completion of an image forming operation. Accordingly, it is possible to mitigate adherence of developer due to a large potential difference between the developing member and the image bearing member.