An image forming apparatus includes a print unit, a print control unit, a reading unit, and a processing unit. The print unit forms an image on a medium at a resolution selected from several resolutions including a first resolution and a second, higher, resolution. The print control unit controls the print unit to print an image for correction including a first test pattern for printing a test pattern for gamma correction of the first resolution at a third resolution higher than the first resolution, and a second test pattern for the gamma correction of the second resolution, on the medium at the third resolution. The reading unit reads the image for correction printed on the medium. The processing unit obtains first correction information using the gamma correction for the first resolution and second correction information using the gamma correction for the second resolution, based on the image for correction.

An information processing apparatus includes a use determination processing portion, a first acquisition processing portion, and a time notification processing portion. The use determination processing portion determines whether or not its associated information processing apparatus is in use. The first acquisition processing portion, when a use request of its associated information processing apparatus is received in a state where the use determination processing portion has determined that its associated information processing apparatus is in use, acquires a planned use time of its associated information processing apparatus via an input operation performed on an operation portion of its associated information processing apparatus. The time notification processing portion notifies a first information processing apparatus that is a transmission source of the use request, of the planned use time acquired by the first acquisition processing portion.

In an example, a print system identifies a number of drops to eject corresponding to an expected variation in print fluid based on media temperature and generate print instructions to operate a fluid eject device to that effect. In another example, a print system includes a temperature engine to identify a temperature, a compensator engine to identify a number of drops of print fluid based on the media temperature, and a control engine to generate print instructions to operate a fluid ejection device to place the number of drops of print fluid on media.

A circuit board on which a first semiconductor device or a second semiconductor device which is different from the first semiconductor device is exclusively mounted, wherein the circuit board comprises a region in which a component configured to form a circuit for achieving a function incorporated in the first semiconductor device but not incorporated in the second semiconductor device is to be mounted, and wherein the component is prevented from being mounted in the region in a case where the first semiconductor device is mounted, and the component is mounted in the region in a case where the second semiconductor device is mounted.

An image forming method and apparatus, includes setting a processing order of a plurality of operations of a same image data and detailed setup information of the plurality of operations, and executing the plurality of operations using the detailed setup information according to the set processing order.

An apparatus for controlling movement of a target object, generates a first operation quantity for first feedback control, and determines a second operation quantity for second feedback control in accordance with which of plural regions obtained by dividing a two-dimensional space defined by two variables of the first and second state quantities includes the first and second state quantities. The plural regions include first, second and third regions, the first region being provided between the second and third regions. The second operation quantity is determined so that the second operation quantity when the first and second state quantities are located in the first region is smaller than the second operation quantity when the first and second state quantities are located in the second region or the third region.

An information processing device which can communicate over a network with a print control apparatus for activating a second interface unit when a print job is applied to a printer in a power-saving status which is to be activated by a specific packet, and when an first activation instruction including identification information specifying a print control apparatus to be activated is received through a first interface unit includes: first instruction control means for transmitting a first activation instruction to the print control apparatus when a print instruction is issued; and output control means for outputting a print job to the print control apparatus after establishing a communication facility of the second interface unit after transmitting the first activation instruction.

An image forming apparatus including a polygon mirror that deflects a light beam, the image forming apparatus includes: an optical sensor arranged such that the light beam deflected by the polygon mirror enters the optical sensor; and a hardware processor that measures an output level of the optical sensor and calculates, as a remaining life of the polygon mirror, an operation time of the polygon mirror to when the output level becomes a threshold value in a case of assuming that the output level ongoingly changes at a rate of change over time that is a change amount of the output level per unit operation time of the polygon mirror, using the measured output level.

A printer includes a printing engine, an interface, and a controller. The controller is configured to perform obtaining a file from an external storage device; determining whether the file has information representing a specific function; in response to determining that the file has the information, sending to a server a data request; receiving data on the updates from the server; incorporating the data on the updates into the file; and causing the printing engine to print an image based on the file including the data on the updates. In response to not determining that the file has the information, the data request is not sent to the server.

An image forming method and apparatus, and a host in which the image forming method includes setting a processing order of a plurality of operations of a same image data and detailed setup information of the plurality of operations, and executing the plurality of operations using the detailed setup information according to the set processing order.