A server apparatus including a first communication device and a first computing device. The first communication device communicates with an image forming apparatus via a network. The first computing device includes a processor, and acts as a data acquirer, a dimension reduction processor, and a residual service life calculator, when the processor executes a first control program. The data acquirer acquires observation data of a first number of dimensions from the image forming apparatus, via the first communication device. The dimension reduction processor converts the observation data of the first number of dimensions into characteristic data of a second number of dimensions fewer than the first number of dimensions. The residual service life calculator calculates a residual service life of a replaceable unit in the image forming apparatus, on a basis of the characteristic data.

An apparatus includes at least one memory and at least one processor functioning to reserve a sheet feeding unit of an image forming apparatus and provide information indicating that the sheet feeding unit is reserved.

An image forming system includes: a conveyor that conveys a recording material along a conveyance path; a detector that is disposed on the conveyance path and detects a characteristic of the recording material; a fixer that fixes a toner image formed on the recording material; and a hardware processor that: causes the detector to detect the characteristic during a warm-up of the fixer with respect to an image forming job, and based on the characteristic, sets an image forming condition in the image forming job.

An image forming system includes an image forming unit, an inspection unit, a conveyance unit configured to convey a sheet to the inspection unit, a controller configured to execute a first inspection mode in which a sheet having an image formed thereon is conveyed by the conveyance unit to the inspection unit and is inspected, and a second inspection mode in which, without executing image forming by the image forming unit, a sheet is conveyed by the conveyance unit to the inspection unit and is inspected, and a setting unit configured to set a recovery process. The setting unit permits the setting of the recovery process in the first inspection mode and prohibits the setting of the recovery process in the second inspection mode.

An information processing apparatus includes a processor configured to: receive multiple print instructions; and generate a new print instruction including the multiple received print instructions, the new print instruction being an instruction in which at least one predetermined page is added to the top or end of a second print instruction, the second print instruction having a page count less than the page count of a first print instruction, the page count of the first print instruction being the highest among the multiple print instructions, the at least one added, predetermined page having a page count equal to the difference between the page count of the first print instruction and the page count of the second print instruction.

An image forming apparatus according to the present disclosure includes: a hardware processor configured to control an image former on a basis of a job pertaining to a printing execution command. The hardware processor is configured to divide the job pertaining to the printing execution command into a plurality of shortjobs, and configured to stop conveyance of the roll sheet and forcibly eject degraded toner from a developing device of the image former at a pause timing between short jobs temporally adjacent to each other among the plurality of short jobs; and the hardware processor sets a job content of each of the plurality of short jobs such that an image of a printing target is inverted upside down for each job switching of the plurality of short jobs.

In response to detecting that a remaining supply of print material of a first cartridge has reached a first threshold, a printing device transmits a request. In response to detecting that a second cartridge has replaced the first cartridge, the printing device determines whether the remaining supply had reached a second threshold and whether a token permitting usage of the second cartridge was received responsive to the request. In response to determining that the remaining supply had reached the second threshold and that the token was received, the printing device prints with print material from the second cartridge.

An image forming apparatus includes a sheet stacking portion, an image forming portion, a detection portion configured to detect a position, in a sheet width direction, a storage configured to store position information of a sheet, and a controller. The controller is configured to cause the storage to store the position information based on a position of a sheet detected by the detection portion during execution of the job, and if sheet information of a sheet used in a previous job is matches sheet information of a sheet used in a current job, cause the image forming portion to start formation of an image to be formed on a first sheet, before a position of the first sheet is detected by the detection portion, based on the position information stored in the storage in the previous job.

A sheet conveying apparatus of an embodiment includes a conveyance path along which a sheet can be conveyed, and a plurality of conveyance rollers configured to move a sheet along the conveyance path. A wireless tag reader/writer is configured to read information from, and write information to, a wireless tag of a sheet on the conveyance path. A controller is configured to detect a phase change in response waves received by the wireless tag reader/writer from a wireless tag. The controller is also configured to identify whether a wireless tag is moving along the conveyance path based on the detected phase change in response waves from the wireless tag. The controller controls the wireless tag reader/writer to write information to the wireless tag identified as moving along the conveyance path.

A server apparatus including a first communication device and a first computing device. The first communication device communicates with an image forming apparatus via a network. The first computing device includes a processor, and acts as a data acquirer, a dimension reduction processor, and a residual service life calculator, when the processor executes a first control program. The data acquirer acquires observation data of a first number of dimensions from the image forming apparatus, via the first communication device. The dimension reduction processor converts the observation data of the first number of dimensions into characteristic data of a second number of dimensions fewer than the first number of dimensions. The residual service life calculator calculates a residual service life of a replaceable unit in the image forming apparatus, on a basis of the characteristic data.