An image forming apparatus includes: a communication unit that receives first mode electric power to perform communication; an image forming unit that receives first mode electric power the to form an image on a medium; a fixing unit that generates heat by receiving first mode electric power corresponding, and performs a fixing process of fixing the image to the medium; a predicting unit that predicts a processing time required for a process of forming the image; and a supply controller that controls supply of electric power according to a first mode or a second mode in which power consumption is smaller than that of the first mode. The supply controller starts the supply of first mode electric power to the fixing unit at a timing based on the predicted processing time when the image forming apparatus transitions from the second mode to the first mode.

An image processing apparatus includes a receiving unit, an executing unit, a log information generating unit, a holding unit, and a transmitting unit. The receiving unit receives and installs one or more program information items for executing a preset process. The executing unit executes the preset process on the basis of at least one of the installed one or more program information items. The log information generating unit generates log information regarding the preset process based on the one or more program information items executed by the executing unit. The holding unit holds a transmission destination of the log information in association with each of the one or more program information items. The transmitting unit transmits the log information to the transmission destination associated with the executed one or more program information items.

An image processing apparatus capable of shifting to a power saving mode. The image processing apparatus includes a storing unit configured to store a document in a storage device, a notification unit configured to periodically notify an apparatus of a predetermined destination of information about a document that has been newly stored by the storing unit into the storage device, and a control unit configured to restrict shifting to a power saving mode in which the notification unit cannot make the notification after storage of a document by the storing unit has been completed and until the notification unit notifies at least information about the document.

An image forming apparatus receives a print setting for image data, determines a density correction table to be applied to a position of a pixel in the image data based on the received print setting from among a plurality of stored density correction tables, and corrects a density of the image data using the determined density correction table.

An image forming apparatus includes a fixing device, and a controller. The controller acts as a print controller, a drawing controller, and an engine controller. The print controller receives a printing request. The drawing controller identifies an image to be drawn, through image processing of a page image designated by the printing request with respect to each page, and identifies a use amount of toner required for the image to be drawn. The engine controller executes a primary fixing temperature control including controlling the fixing temperature according to color information designated by the printing request with respect to each page, and executes, after executing the primary fixing temperature control, a secondary fixing temperature control including controlling the fixing temperature according to the use amount of toner identified by the drawing controller.

An image forming apparatus includes a fixing device, and a controller. The controller acts as a print controller, a drawing controller, and an engine controller. The print controller receives a printing request. The drawing controller identifies an image to be drawn, through image processing of a page image designated by the printing request with respect to each page, and identifies a use amount of toner required for the image to be drawn. The engine controller executes a primary fixing temperature control including controlling the fixing temperature according to color information designated by the printing request with respect to each page, and executes, after executing the primary fixing temperature control, a secondary fixing temperature control including controlling the fixing temperature according to the use amount of toner identified by the drawing controller.

An image forming system includes: an image former that forms a printed image on a recording medium on the basis of setting information included in a print job and original image data; an image reader that generates read image data by optically reading the printed image; an abnormality detector that detects an abnormality included in the printed image using the read image data; a storage that stores a plurality of pieces of read image data in each of which the abnormality has been detected as sample image data, and stores at least one feature parameter representing a feature of the print job in association with corresponding sample image data; a hardware processor that searches for a feature parameter and sets an abnormality detection level in the abnormality detector; and an acceptor that accepts user's evaluation for an abnormality included in the displayed sample image data.

An image forming apparatus includes a first processor configured to control a transporter that transports a sheet and a first image forming section that forms an image on the sheet transported by the transporter, and a second processor configured to control a second image forming section that forms an image on the sheet transported by the transporter. The first processor and the second processor are contained in a single housing. When the first processor receives an image formation command from outside the housing and determines to perform an image forming process at the first image forming section, the first processor is configured to perform transport preparation for transporting the sheet at the transporter and receive, from the second processor, a completion notification corresponding to a preparation command, for performing image formation preparation in the second image forming section, transmitted to the second processor via an inside of the housing, and subsequently cause the transporter to transport the sheet and the first image forming section to form the image. If the first processor ascertains that an independent process involving not forming the image at the first image forming section but forming the image at the second image forming section is to be performed, the first processor is configured to perform the transport preparation before receiving the completion notification, and cause the transporter to transport the sheet after receiving the completion notification.

A processor selects a target sheet from a plurality of predetermined sheet candidates in accordance with selection information that is input via an input device. Furthermore, the processor derives feature information regarding a noise point from a target image that is obtained through an image reading process performed on an output sheet output from an image forming device, the noise point being a dot-like noise image included in the target image. Furthermore, the processor determines whether or not the noise point is a dot-like sheet noise by applying the feature information to a determination algorithm that corresponds to the target sheet, the sheet noise being included in a sheet of the output sheet itself, the determination algorithm being one of a plurality of determination algorithms that respectively correspond to the plurality of sheet candidates.

In an image-forming apparatus, a fixing device includes first and second fixing members; and a pressure modifying mechanism. The first and second fixing members form a nip. The pressure modifying mechanism modifies a nip pressure at the nip to one of a first nip pressure and a second nip pressure smaller than the first nip pressure. A controller performs: a converting process to convert print data into raster image data; an image-forming process to form a developer image on a sheet using the raster image data; and a fixing process to fix the developer image to the sheet with the fixing device at the first nip pressure. When a second converting process is not completed before a prescribed time following completion of a first fixing process has elapsed, the controller further performs a nip pressure reducing process to modify the nip pressure from the first to the second nip pressure.