In a case where a cleaning member is reciprocated in a longitudinal direction of a transmissive member in cleaning operation, the time necessary for the cleaning operation is lengthened. A movement unit is controlled to move the cleaning member in a first direction from a first position in response to a cleaning start signal and then to stop the cleaning member at a second position, and to move the cleaning member in a second direction opposite to the first direction from the second position in response to a next cleaning start signal and then to stop the cleaning member at the first position.

In a case where a cleaning member is reciprocated in a longitudinal direction of a transmissive member in cleaning operation, the time necessary for the cleaning operation is lengthened. A movement unit is controlled to move the cleaning member in a first direction from a first position in response to a cleaning start signal and then to stop the cleaning member at a second position, and to move the cleaning member in a second direction opposite to the first direction from the second position in response to a next cleaning start signal and then to stop the cleaning member at the first position.

An image forming apparatus connected to a charging device includes an image forming unit, a fixing unit, a charge processor, a controller, and a printed sheet counter. The charge processor charges a fee for printing. The controller selects an energy saving mode, upon deciding that a balance of a deposited amount in the charging device is less than a threshold amount. The printed sheet counter counts the number of sheets of the recording medium printed by the image forming unit in one single printing job. The controller selects the energy saving mode for the next printing job, upon deciding that the number of sheets printed in one single printing job is less than a predetermined threshold number of sheets, when the deposit balance is remaining in the charging device.

An image forming apparatus connected to a charging device includes an image forming unit, a fixing unit, a charge processor, a controller, and a printed sheet counter. The charge processor charges a fee for printing. The controller selects an energy saving mode, upon deciding that a balance of a deposited amount in the charging device is less than a threshold amount. The printed sheet counter counts the number of sheets of the recording medium printed by the image forming unit in one single printing job. The controller selects the energy saving mode for the next printing job, upon deciding that the number of sheets printed in one single printing job is less than a predetermined threshold number of sheets, when the deposit balance is remaining in the charging device.

An image forming apparatus includes a first image forming portion including a first photosensitive member, a first charging member, and a first developing member including a first accommodating portion: a second image forming portion including a second photosensitive member, a second charging member, and a second developing member including a second accommodating portion: an exposure portion; an applying portion: a storing portion; and a controller. When in the storing portion, information on toner accommodated in the first accommodating portion is changed from first information to second to information and information on toner accommodated in the second accommodating portion is not changed, the controller carries out control so that a transfer voltage is changed from a first transfer voltage to a second transfer voltage and so that a potential of an image portion formed on the second photosensitive member is changed from a first potential to a second potential.

An image forming apparatus that is capable of properly grasping a load that is imposed on the image forming apparatus by performing high-chroma printing. The image forming apparatus includes a printer engine that causes a heating rotary body to support and convey a sheet with a toner image formed thereon and performs an image formation on the sheet. The printer engine is controlled to perform the image formation on sheets in a first mode in which a toner image based on a piece of image data is formed with a first amount of toner, or a second mode in which a toner image based on the piece of image data is formed with a second amount of toner larger than the first amount of toner. A count function for counting the number of times of the image formation performed in the second mode, rather than the first mode, is performed.

An image forming apparatus that is capable of properly grasping a load that is imposed on the image forming apparatus by performing high-chroma printing. The image forming apparatus includes a printer engine that causes a heating rotary body to support and convey a sheet with a toner image formed thereon and performs an image formation on the sheet. The printer engine is controlled to perform the image formation on sheets in a first mode in which a toner image based on a piece of image data is formed with a first amount of toner, or a second mode in which a toner image based on the piece of image data is formed with a second amount of toner larger than the first amount of toner. A count function for counting the number of times of the image formation performed in the second mode, rather than the first mode, is performed.

An image forming apparatus includes a first determination section, a calculation section, a second determination section, and a billing section. The first determination section determines whether a toner container attached to a toner supply section is a first container or a second container. The calculation section calculates a consumption amount of a toner in the toner container determined as the second container. The second determination section determines whether the consumption amount is a threshold value or larger. When the consumption amount is less than the threshold value, the billing section changes a billing price from a first price to a second price. When the toner container is determined to be the first container, the billing section changes the billing price from the first price to a third price. The second price is lower than the first price. The third price is equal to or lower than the second price.

According to an embodiment, an image processing system includes an image forming unit, a decoloring unit, a storage device, an operation panel and a processor. The storage device stores image data of a plurality of printed materials. The processor forms on a sheet an image based on image data in a page range of the printed material received by the operation panel. The processor determines whether or not images of all pages in the page range have been decolored in a predetermined range after the image formation is executed when the formed image is decolored by the decoloring unit.

According to an embodiment, an image processing system includes an image forming unit, a decoloring unit, a storage device, an operation panel and a processor. The storage device stores image data of a plurality of printed materials. The processor forms on a sheet an image based on image data in a page range of the printed material received by the operation panel. The processor determines whether or not images of all pages in the page range have been decolored in a predetermined range after the image formation is executed when the formed image is decolored by the decoloring unit.