An information processing apparatus includes an obtaining unit configured to obtain information about a drum unit from an image forming apparatus configured to form an image on a sheet using the drum unit, and a notification unit configured to provide a notification, in a case where it is detected that the drum unit has been replaced with a new one based on the information obtained by the obtaining unit, indicating that a calibration is required.

An image forming apparatus includes a developing container, a detection portion detecting an amount of toner in the developing container, a display portion, and a control portion controlling the detection portion to execute a first detection and a second detection, wherein the display portion, in a case where the detection result of the first detection is greater than or equal to a first threshold, displays a first display and, in a case where the detection result is less than the first threshold, displays a second display different from the first display, and in a case where the detection result of the second detection is greater than or equal to a second threshold smaller than the first threshold, displays the first display and, in a case where the detection result is less than the second threshold, displays the second display.

An image formation system includes an image formation apparatus and a static elimination apparatus that performs static elimination of a sheet on which an image is formed by the image formation apparatus. The static elimination apparatus includes a conveyance unit that conveys the sheet, a static elimination unit that performs the static elimination of the sheet conveyed by the conveyance unit, and a signal transmission unit that transmits a certain signal based on a state of the static elimination unit. The image formation apparatus includes a signal reception unit that receives the signal transmitted by the signal transmission unit and a first notification unit that indicates content of notification corresponding to the signal received by the signal reception unit.

An image forming apparatus includes image forming parts, developer containers, developer amount detecting parts, a use setting part and a limit setting part. The image forming parts execute an image forming operation for respective colors of developers. The developer container contains the developer to be supplied to the image forming part. The developer amount detecting part detects a developer amount contained in the developer container. The use setting part sets a use condition indicating whether each developer is usable or unusable. The limit setting part sets a limit condition indicating a limit value of the developer amount to be maintained in each developer container. The image forming part executes the image forming operation in accordance to the use condition set by the use setting part, to the developer amount detected by the developer amount detecting part, and to the limit condition set by the limit setting part.

A sheet processing apparatus includes a sheet storage unit configured to enable itself to be opened and closed and a display unit configured to display a screen for setting an attribute of a sheet stored in the sheet storage unit. Whether or not to display the screen for setting the sheet attribute is determined based on a remaining number of sheets obtained before the sheet storage unit is opened and a remaining number of sheets obtained after the sheet storage unit is closed. The setting screen is displayed on the display unit based on a result of determination.

An image forming apparatus enables changing a sheet feed stage for job separator sheets during a print job in a case where the sheet feed stage to be used as the sheet feed stage for the job separator sheets is reserved and the print job is configured to not use a reserved sheet feed stage.

On a touch-panel display of an image forming apparatus, which is divided to five areas, that is, a system area, a function selection area, a preview area, an action panel area and a task trigger area, pieces of information are displayed. Even if an operational mode is switched, the same or similar information is always displayed in the area arranged at the same position. In the task trigger area, software buttons operated by the user for actually operating the image forming apparatus are displayed.

An image forming apparatus includes an image forming device, a gradation adjustment mark adder and a hardware processor. The hardware processor monitors and adjusts a gradation characteristic based on a result of scanning a gradation adjustment mark. The hardware processor makes a determination as to whether to form the gradation adjustment mark overlapping an image area of an image based on image data. If it is determined to form the gradation adjustment mark overlapping the image area, the hardware processor controls the gradation adjustment mark adder to add gradation adjustment mark information to the image data in the image area.

An image processing apparatus which makes it possible to realize easy accessing of registered information of any function and provide a user interface having high operability. The image processing apparatus stores setting information configured via an operating section and access information for use in accessing the setting information in association with each other. Further, the image processing apparatus stores the setting information and button information in association with each other. The button information is displayed on a touch panel in a user selectable form. When an item of the button information displayed on the touch panel is selected by a user, a portal application detects the access information associated with the selected button information item. The setting information is acquired based on the detected access information. The image processing apparatus performs image processing based on the acquired setting information.

An information processing device includes a storage unit, a display unit, and a control unit. The storage unit stores a selection value indicating whether a predetermined setting is enabled or disabled, and a setting value that applies when the setting is enabled. The display unit displays a setting screen concerning the predetermined setting. When a user gives an instruction to switch to display of the setting screen, even if the selection value stored in the storage unit indicates that the predetermined setting is disabled, the control unit causes the display unit to display the setting screen and causes the selection value displayed on the setting screen to indicate that the predetermined setting is enabled, so that the user does not have to perform a separate operation to enable it.