摘要:
An image forming apparatus includes an image bearing member; toner image formation means for forming a toner image on the image bearing member; removing means for removing deposited matter deposited on the image bearing member; detecting means for detecting a toner image to be detected, formed on the toner image formation means; control means for controlling a toner image forming condition of the toner image forming means in accordance with a result of detection of the toner image to be detected by the detecting means; the apparatus being operable in a mode in which the removing means operates to remove the deposition, and the detecting means operates to detect the toner image to be detected, executing means for executing an operation in the mode; and an operating portion for manually starting execution of the operation in the mode by the executing means.
摘要:
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.
摘要:
The image forming apparatus includes n image forming apparatus including image forming device for forming an image on a recording material, an image heating member which heats the image on the recording material at a nip portion, temperature detecting device for detecting a temperature of the image heating member, control device for controlling the temperature of the output of the image heating device in accordance with the temperature detecting device, cooling means for cooling a region of the image heating member in the width direction of the image heating member in accordance with output of the said first detecting means, another detecting device for detecting a temperature of a region at an end side in the width direction within the region, and notification device for notifying that the set width of the recording material is wrong in accordance with the outputs of the temperature detecting devices. Abnormality of the apparatus is appropriately detected, and reliability of the apparatus is enhanced.
摘要:
An image forming apparatus capable of reducing a part of a sheet exposed outside the apparatus on standby after finishing printing a first side in both-sided printing. A transfer material P having an image formed on its first side is fed until a part thereof gets exposed outside a full-color printer 1 and is fed to a refeeding path in the full-color printer 1. The transfer material P inverted by a flapper 44 is fed to a standby position to form an image on a second side thereof and is stopped there. In the case where a preparation for forming the image on the second side is not completed, the standby position for having the transfer material P stopped is changed corresponding to length of the inverted transfer material P in a feeding direction.
摘要:
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.
摘要:
In an image forming apparatus which has an image bearing member for bearing a toner image, a transferring device for transferring the toner image, a cleaning device for recovering waste toner which remains on the image bearing member, a containing device for containing the waste toner which is recovered, a near-end position detecting device, an image information detecting device for detecting information about an image on the image bearing member, and an image formation state recognizing device for recognizing an image formation state, the image forming apparatus including a full determining device which accumulates pixel amount on the basis of detection result by the image information detecting device, and recognition result by the image formation state recognizing device when it is detected by the near-end position detecting device that the waste toner is contained to a near-end position in the containing device, and determines that the waste toner becomes full when accumulation result reaches a predetermined value.
摘要:
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.
摘要:
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.
摘要:
There is provided an image forming apparatus that effectively suppresses an increase in temperature of a heating device by operating an air blowing device when image formation is performed to a small-size recording material, and which can continuously perform the image formation. The image forming apparatus includes a heating device to heat a recording material to be conveyed, a cooling fan that blows air from an air blowing port facing a part of the heating device, and a shutter that moves such that an opening width of the air blowing port is regulated depending on a width of the recording material. The image forming apparatus also includes an error detecting device that detects an error of the cooling fan. When the error detecting device detects an error of the cooling fan, the shutter moves to a position such that image formation is continued.
摘要:
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.