An image forming system includes an image forming apparatus and a discharging device. The image forming apparatus includes a first rotatable member, a second rotatable member positioned downstream of the first rotatable member, a first driving portion for driving the first and second rotatable members, and a first controller for controlling the first driving portion. The discharging device includes a third rotatable member, a second driving portion for driving the third rotatable member, and a second controller for controlling the second driving portion. The first controller controls a driving speed of the second rotatable member depending on a driving speed of the first rotatable member and feeds the driving speed of the first rotatable member to the second controller. The second controller controls a driving speed of the third rotatable member depending on the driving speed fed from the first controller.

An image forming apparatus includes an image forming section, a transferring member, and a controller. The image forming section includes an image supporting member and a developer supporting member. The image supporting member supports a latent image on a surface of the image supporting member. The developer supporting member supports, on a surface of developer supporting member, a developer that develops the latent image. The transferring member transfers, onto a transferred medium as a medium on which a transfer is to be performed, an image formed by the image forming section. The controller controls, as an amount of the developer, a developer amount to be fed to the latent image supported on the surface of the image supporting member, on the basis of a traveling velocity of the transferred medium.

An image formation apparatus includes: an intermediate transfer belt that carries and conveys a developer image formed by an image formation section; a driver that conveys the intermediate transfer belt in a predetermined direction; a transfer device that transfers the developer image carried on the intermediate transfer belt onto a predetermined medium; a first detector that detects a belt conveyance speed, which is the speed of the intermediate transfer belt conveyed; a controller that controls the driver; a conveyer section that conveys the medium to the transfer device; and a second detector that detects a medium conveyance speed, which is the speed of the medium conveyed by the conveyer section. The controller controls driving of the driver on the basis of the belt conveyance speed and the medium conveyance speed.

An image forming apparatus comprises an image forming section; a fixing device; an input section; a storage section which stores a target temperature of the fixing device in a case of carrying out the fixing processing and a target temperature of the fixing device in a case of carrying out the erasing processing; and a control section which controls to read out lower one of the target temperature of the fixation and the target temperature of the erasure from the storage section to set the lower one to the target temperature of the fixing device in a case in which the processing information of the fixing processing and the erasing processing is input by the input section and the processing is continuously carried out, and drive the fixing device via the driving section at a driving speed corresponding to each of the fixing processing and the erasing processing.

An image forming apparatus includes an image forming unit to form an image on a sheet while conveying the sheet at an image forming speed, a discharge roller pair to discharge the sheet, a conveyance roller pair to convey the sheet from the image forming unit to the discharge roller pair, and a control unit to control a motor to switch a speed of the conveyance roller pair and the discharge roller pair between a first speed corresponding to the image forming speed and a second speed higher than the first speed. In first control, the speed is switched from the second to the first speed at timing at which a trailing end of the sheet reaches a first position. In second control, the speed is switched from the second to the first speed at timing at which a leading end of a subsequent sheet reaches a second position.

An image forming apparatus according to one aspect of the disclosure includes a printing mechanism, a drawing data creating circuit, a medium supply circuit, and a charging circuit. The medium supply circuit performs: a primary supply supplying the printing medium to a specific position; and a secondary supply supplying the printing medium from the specific position to the printing mechanism. When the band-used color fixed as color by the drawing data creating circuit exists, the medium supply circuit starts the primary supply prior to completion of creating all the bands of the drawing data by the drawing data creating circuit. When the band-used color fixed as color by the drawing data creating circuit exists, the charging circuit performs the charging process in a case where the color for use is color, in starting the primary supply.

An image forming apparatus including a first temperature sensor inside a space between frames, a second temperature sensor outside the space between the frames, and a controller that, in a case where a first temperature by the first temperature sensor is higher than an inside threshold temperature, and a second temperature by the second temperature sensor is higher than an outside threshold temperature, performs simplex image formation at a first speed when simplex image formation is specified, and performs duplex image formation at a second speed lower than the first speed when duplex image formation is specified, and in at least one of a case where the first temperature is equal to or less than the inside threshold temperature and a case where the second temperature is equal to or less than the outside threshold temperature, performs image formation at the first speed.

An image forming system includes, an image former configured to form an image on a recording medium that is a flat cut sheet; a laminator that is disposed on a downstream side of the image former in a conveyance direction of the recording medium and that laminates the recording medium on which the image is formed by the image former; and a hardware processor configured to adjust at least one of a lamination speed in the laminator and/or an image forming speed in the image former.

An image forming apparatus includes an image forming unit to form an image on a sheet based on a mode selected from a plurality of modes having different image forming speeds, a memory to store first data for a first mode included in the plurality of modes, the first data indicating a correspondence for the first mode between a type of the sheet and the image forming speed, and second data for a second mode included in the plurality of modes, the second data indicating a correspondence for the second mode between a type of the sheet and the image forming speed, and a display. A controller determines a first image forming speed for the first mode from the first data based on the type of the sheet, and determines a second image forming speed for the second mode from the second data.

An image forming apparatus includes heating and pressurizing rotary members, and a speed control unit. In a first mixed job to be executed in a first mode and where a first recording material is to be initially conveyed and a second recording material is to be conveyed subsequent to the first recording material, the speed control unit sets a conveyance speed of the first recording material to a second speed based on acquired grammage information and sets a conveyance speed of the second recording material to a first speed based on the acquired grammage information. In a second mix job to be executed in the second mode and where the second recording material is to be conveyed subsequent to the initially conveyed first recording material, the speed control unit sets the conveyance speed of the first and second recording materials to the first speed based on the acquired grammage information.