An image forming apparatus includes an image processor configured to perform image processing on image data based on a conversion condition to output converted image data; an image forming unit configured to form an image based on the converted image data output from the image processor, the image forming unit being controlled based on an image forming condition; and a controller configured to perform tone correction control, density evenness control, and total density control, which is a combination of the tone correction control and the density evenness control. In the tone correction control, the controller controls the image forming unit to form a test image on a sheet and obtains reading data related to the test image on the sheet.

An image forming apparatus includes: a hardware processor that: estimates a remaining amount of toner in a cartridge; registers a required replacement time corresponding to a time required by an operator to replace the cartridge; calculates a toner consumption speed when an image is printed, on the basis of data of the image to be printed and a printing speed when the image is printed; predicts a first timing at which the cartridge reaches a toner runout state during printing of the image, on the basis of the remaining amount of toner and the toner consumption speed; and makes notification for prompting the operator to replace the cartridge at a second timing before the first timing by the required replacement time.

An operation unit for image forming apparatus is disclosed. The operation unit includes: a bearing portion configured to rotatably support a shaft portion; a restricting portion provided at a position different from that of the bearing portion in an axial direction of the shaft portion, a restricting portion being configured such that when a supporting portion is rotated in a first direction from a first angle toward a second angle, the restricting portion restricts a rotation of the supporting portion in the first direction by abutting a mounting portion at a position where the operation unit forms the second angle; and an abutting portion provided on an opposite side of the restricting portion via the bearing portion in the axial direction, the abutting portion being configured to abut on the shaft portion.

An image forming apparatus includes an apparatus main assembly, a controller provided in the apparatus main assembly, an operating portion mounted to the apparatus main assembly, a cable configured to electrically connect the controller and the operating portion, the cable having a connectable length with the operating portion mounted at a predetermined position, and an accommodating portion provided in the apparatus main assembly and configured to accommodate an excessive length portion of the cable connected with the operating portion mounted to the apparatus main assembly, the accommodating portion including a space for accommodating the cable in a wound state.

An image forming device (100) includes a reading section (10), a conveyance section (20), an operation display section (110), storage (170), and a controller (160). The reading section (10) reads an image of a document to generate image data. The conveyance section (20) conveys the document to the reading section (10). The operation display section (110) displays an operation screen. The storage (170) stores therein first image data (171) of at least one page of the document read by the reading section (10) before a jam of the document occurs in the conveyance section (20). The controller (160) controls the operation display section (110) to display second image data (172) in association with the first image data (171). The second data (172) is image data of a page of the document read by the reading section (10) after resumption of conveyance of the document on the occasion of occurrence of the jam. The page corresponds to the at least one page that has been already read.

An image forming device is provided. The image forming device includes: a conveyance unit that conveys a continuous paper, an image forming unit that forms an image on a continuous paper conveyed by the conveyance unit, a job selection unit that selects a job to be executed, and a processor that calculates an image forming distance and indicates the calculated image forming distance on a display. The image forming distance is a length in a conveyance direction of the continuous paper needed to execute the selected job.

A sheet conveying device can selectively execute a first conveyance process of conveying sheets on a first tray and discharging the sheets onto a second tray, a second conveyance process of conveying the sheets on the first tray and discharging the sheets onto a third tray, or a third conveyance process of conveying the sheets on the third tray and discharging the sheets onto the second tray. A control device records conveyance history information indicating by which conveyance processes each of the sheets on the first tray has been conveyed in a storage device. Furthermore, the control device causes the sheet conveying device to sequentially select the first conveyance process or the third conveyance process for each of the sheets based on the conveyance history information and execute the selected process.

An image forming apparatus includes a conveyance portion, a printing portion, a delay storage portion, a control portion, an input portion, and a display portion. The delay storage portion can store delay information. The control portion performs a measurement mode. The input portion receives instructions to start and end the measurement mode. When an instruction to perform the measurement mode is entered, the control portion deletes the delay information stored in the delay storage portion and stores the delay information generated thereafter during printing in the delay storage portion. When an instruction to end the measurement mode is entered, the control portion displays on the display portion delay information on predetermined irregular delay factors that occur irregularly during printing, out of the delay information stored in the delay storage portion.

An image forming apparatus includes a processor. The processor is configured to stop a print job under execution in response to an occurrence of an abnormality preventing the print job from continuing, set the stopped print job to a skip state, and restart the print job set to the skip state in response to a restart instruction by a user associated with the print job and not by a second user different from the user associated with the print job.

Disclosed is an image forming system including: an image forming apparatus; and an operation unit communicating wirelessly with the image forming apparatus. The operation unit includes a touch panel display, a first memory temporality storing a first screen image and a second screen image related to the image forming apparatus, a second memory in which the second screen image is stored in advance. When the first screen image transmitted from the image forming apparatus to the operation unit is displayed on the touch panel display, if a first icon on the first screen image is touched, the position of the first icon is transmitted to the image forming apparatus. When the second screen image stored in the second memory is displayed on the touch panel display, if a second icon on the second screen image is touched, a command indicating the second icon is transmitted to the image forming apparatus.