An image forming apparatus, includes: a media sensor that detects a sheet type; a fixer that fixes the image on a sheet; a storage that stores a fixing temperature for each sheet type; and a hardware processor that controls power supplied to the fixer by pulse-width modulation (PWM) control and controls a temperature of the fixer to the fixing temperature corresponding to the sheet type detected by the media sensor.

An image forming system includes: an image forming apparatus; and a recording material information detecting apparatus provided outside the image forming apparatus, wherein the recording material information detecting apparatus includes a recording material information detector that detects recording material information about a recording material, and the image forming apparatus includes: an image former; an operation detector; and a hardware processor.

An image reading apparatus includes a transparent member on which an original is placed, a reading unit configured to read the original placed on the transparent member while moving in a first direction, and at least one processor configured to detect at least one edge of the original based on a reading result by the reading unit, wherein the at least one processor is configured to determine a candidate of a size of the original placed on the transparent member based on an edge, among the at least one detected edge, in the second direction orthogonal to the first direction, wherein the reading unit is configured to move in the first direction by a predetermined distance based on the candidate of the determined size.

An image reading apparatus includes: a conveyance unit configured to convey the original; an image reading unit configured to read an image of the original conveyed by the conveyance unit by using a reading sensor to generate image data which represents a reading result; at least one processor configured to: detect a streak image in an image represented by the image data based on the image data; determine a content area in the image represented by the image data, the content area being an area where content is printed, and perform correction processing for removing the streak image by correcting the image data; wherein the at least one processor is configured to be operable in a first reading mode in which the correction processing is performed to image data corresponding to the streak image in an area outside the content area.

The invention comprises a printing method, comprising the steps of: marking a markable surface with a graphical code; loading into a plotter system the markable surface; receiving a print job related to the graphical code; and plotting the set of vectors on the markable surface, such as by identifying a particular media type of the markable surface with the graphical code, receiving into the plotter system a print job, the print job comprising: (1) the set of vectors; and (2) a printable media requirement; scanning, with the plotter system, the printable media code; and confirming the printable media requirement matches the particular media type.

A print management system having a control apparatus and an image forming apparatus with sheet feeding cassettes includes a sheet data registration unit to register sheet data indicating an attribute of each print sheet, a sheet feeding cassette selection unit to select a sheet feeding cassette, and a sheet data selection unit to select sheet data about at least one type of print sheet from the registered sheet data. An adjustment value setting unit sets adjustment value information during image formation while feeding the selected print sheet and a database setting unit sets, in association with each other, the attribute of the selected sheet feeding cassette, the selected sheet data about the print sheet, and the set adjustment value information. The database setting unit allows setting to one piece of sheet data adjustment value information about each sheet feeding cassette selected by the sheet feeding cassette selection unit.

A reading device, an image forming apparatus, and a method of correction. The reading device includes a scanner configured to read an image in a first wavelength range and an image in a second wavelength range from light reflected by a surface of a recording medium, a detector configured to detect a change from a reference position in a reading-depth direction when the surface of the recording medium is read by the scanner, based on an amount of characteristic read from the image in the second wavelength range, and a corrector configured to correct the image in the first wavelength range based on the change detected by the detector. The image forming apparatus includes the reading device, and an image forming device configured to form an image corrected by the corrector of the reading device on a recording medium. The method includes reading the image in the first wavelength.

A print instructing device includes: a recording section that, in a case in which history information does not include size information indicating a size of a print medium designated by a print demand that demands an execution of printing, records paper quality information indicating a paper quality of the print medium designated by the print demand in association with the size information in the history information; and a display controlling section that, in a case in which the size information is included in the history information and the paper quality information does not match the history information corresponding to the size information, causes confirmation information confirming whether or not to change the designated paper quality to be displayed.

An image reading device includes a transparent member unit including a transparent member, an opposing member opposed to the transparent member, and a reading mechanism. The reading mechanism irradiates the opposing member and a medium being conveyed between the transparent member and the opposing member with light through the transparent member and receive reflected light from the opposing member and the medium. The reading mechanism includes a position adjuster to which the transparent member unit is secured and a guide to guide the transparent member unit in a direction intersecting a direction of conveyance of the medium to detachably attach the transparent member unit to the reading mechanism. The position adjuster changes a position at which the transparent member unit is secured with respect to the reading mechanism. The transparent member unit is secured to the position adjuster.

An image reading apparatus according to the present disclosure includes: a platen glass on which a document is placed; a light source, an image sensor; an image reading unit for optically reading an image of a reading area of the image sensor; a rotatable document cover for covering the platen glass; a cover state detection unit for the document cover; a control unit to detect a sensor output level of the image sensor; and a document size specification unit for the document. The control unit causes the image reading unit to perform a reading operation for specifying the size of the document in the main scanning direction in a state in which the document cover is open, and causes the light source to emit a predetermined light amount in the reading operation, which is larger than the light amount when the document image is read from the document.