摘要:
An image forming apparatus is provided which includes a sheet containing section for containing sheets, a conveying member and a conveying path for conveying the sheets, at least one optical sensor that is arranged in the conveying path and has a light emitting element and a light receiving element for detecting presence or absence of a sheet on the conveying path, a driver for changing an amount of emitted light of the optical sensor, a sheet supply operation detecting section for detecting a supply operation of the sheets contained in the sheet containing section, and a control section for adjusting an amount of emitted light of the optical sensor according to an output of the sheet supply operation detecting section.
摘要:
The quantity of light of an optical sensor including a light emission portion and a light reception portion is adjusted through calculation before sheet detection is performed. In order to perform the light quantity adjustment, a voltage to be applied to the light emission portion of the optical sensor is obtained by performing calculation based on a relation between a voltage applied to the light emission portion before the adjustment and an output from the light reception portion before the adjustment. Then, it is judged whether the obtained voltage exists within a predetermined range and, if a positive result is obtained, the light quantity adjustment is ended. Further, a signal requesting the cleaning of the optical sensor is outputted in accordance with a value of the obtained voltage.
摘要:
A sheet conveying apparatus permits keeping predetermined sheet intervals, even when sheet conveyance is temporarily discontinued and then resumed, after resumption of conveyance. The sheet conveying apparatus has a first roller which feeds sheets at predetermined sheet intervals, and a second roller which conveys a plurality of sheet fed from the first roller. After temporarily discontinuing conveyance of the plurality of sheets, conveyance of the plurality of sheets is resumed by use of the first roller and the second roller. The variation in the sheet interval caused when temporarily discontinuing sheet conveyance is corrected upon resumption of sheet conveyance.
摘要:
There are provided an image forming apparatus which is capable of efficiently performing necessary actions to thereby reduce downtime. At least one job can be registered. Image formation is performed according to the at least one registered job. Action objects are detected on which actions necessary for the image forming apparatus should be taken.
摘要:
There are provided an image forming apparatus which is capable of efficiently performing necessary actions to thereby reduce downtime. At least one job can be registered. Image formation is performed according to the at least one registered job. Action objects are detected on which actions necessary for the image forming apparatus should be taken.
摘要:
An image forming apparatus which is capable of bringing processing devices, such as sheet feed devices and post-processing devices connected respectively to the image forming apparatus, into operable states in timing optimal for carrying out an image forming job, thereby improving productivity and operation rate of the image forming apparatus as well as saving energy. A print job is analyzed to determine at least one sheet feed device and at least one post-processing device to be used in executing the print job, and states of the determined devices are checked to determine at least one of the sheet feed device and the post-processing device to be caused to start a preparatory operation in advance before the print job is executed. Power supply to the at least one of the sheet feed device and the post-processing device is turned on in timing such that the preparatory operation is completed in time for the start of execution of the print job.
摘要:
An image forming system which is capable of performing double-sided clear coating. The image forming system comprises an image forming apparatus configured to form an image on a sheet, and a clear coating apparatus configured to perform clear coating on the sheet using clear toner. The image forming apparatus is provided with a double-sided image forming function for forming images on the respective opposite sides of a sheet, and the clear coating apparatus is provided with a double-sided clear coating function for performing clear coating on the opposite sides of a sheet.
摘要:
An image forming apparatus which conveys waste toner includes a buffer portion 101 capable of temporarily containing the waste toner and a waste toner container 102 capable of containing the waste toner and a waste toner container 102 capable of containing the waste toner. The waste toner is dominantly contained in the waste toner container 102 compared with the buffer portion 101. When the waste toner container 102 is filled with the waste toner, the waste toner can be contained in the buffer portion 101. An engine controller 120 detects whether the buffer portion 101 is filled with the waste toner 112 or not through a buffer portion waste toner full state detection sensor 105. When the buffer portion 101 is filled with the waste toner 112, the engine controller controls so that a conveyance operation by a first waste toner pipe 103 and an image forming operation are stopped.
摘要:
A sheet conveying apparatus has a first conveying unit for conveying a sheet, a second conveying unit for conveying a sheet in merging with the first conveying unit and a sheet merging overlapping device. At a junction between the first and second conveying unit, the sheet merging overlapping device overlaps the sheet conveyed by first conveying unit with the sheet conveyed by the second conveying unit in a sheet conveyance direction.
摘要:
An image forming apparatus which conveys waste toner includes a buffer portion 101 capable of temporarily containing the waste toner and a waste toner container 102 capable of containing the waste toner and a waste toner container 102 capable of containing the waste toner. The waste toner is dominantly contained in the waste toner container 102 compared with the buffer portion 101. When the waste toner container 102 is filled with the waste toner, the waste toner can be contained in the buffer portion 101. An engine controller 120 detects whether the buffer portion 101 is filled with the waste toner 112 or not through a buffer portion waste toner full state detection sensor 105. When the buffer portion 101 is filled with the waste toner 112, the engine controller controls so that a conveyance operation by a first waste toner pipe 103 and an image forming operation are stopped.