In some examples, a component for a printing device includes a memory device comprising a plurality of corrective data to produce a corresponding plurality of color tables each customized for a respective media type of a plurality of media types, wherein a respective corrective data of the plurality of corrective data corresponds to nodes of a reference color table for the printing device that is able to accept the plurality of media types for printing. The respective corrective data includes a plurality of residual values to transform the nodes of the reference color table to a customized color table for use with a selected media type of the plurality of media types.

A printing apparatus having a copying function includes a document feeder that feeds a document, an image reading section that scans the document fed from the document feeder and generates image data of the document, a printing section that performs printing on paper in accordance with the image data, and a controller. The controller performs an avoidance process of avoiding performing the printing in which a size of a sheet of the document and a size of the paper do not match against an intention of a user, in a case where a setting is made in which the document, on which single-sided printing is performed, is printed on both sides of the paper to perform double-sided printing, and the document includes sheets having different sizes and includes an odd number of successive sheets with an identical size.

An inkjet printer includes a print controller and a print mode setter. The print controller causes one or a plurality of print layers to be printed on a recording medium. The one or the plurality of print layers may include one or both of a special color ink layer and a process color ink layer. The special color ink layer includes ink dots of a special color ink, and the process color ink layer includes ink dots of the process color ink. The print mode setter is programmed and/or configured to be able to set a multi-layer print mode in which three or more layers including both of the special color ink layer and the process color ink layer are printed.

A memory device includes a compressed color table and corrective information. The compressed color table includes a first set of nodes of the color table compressed with a lossy compression at a selected compression ratio. The first set of nodes include a color difference within an error threshold at the selected compression ratio. Corrective information is included for a second set of nodes of the color table. The second set of nodes have a color difference outside the error threshold.

In some examples, a supply component for a printing device includes a memory device comprising corrective data to produce a customized color table for a first color gamut, wherein the corrective data corresponds to nodes of a reference color table for the printing device that is able to employ a plurality of color gamuts for printing. The corrective data comprises a plurality of residual values to transform the nodes of the reference color table to the customized color table. The corrective data is accessible by the printing device to transform the reference color table to the customized color table used for printing to a media using the first color gamut.

An image forming apparatus includes a hardware processor; a supplier that supplies a sheet; an image former; and a sensor that senses an operation of opening and/or closing a paper cassette containing the sheet. An image is formed in any mode between an automatic sensing mode in which the sheet type is discriminated by the hardware processor, and a type specifying mode in which the sheet type is accepted by the hardware processor. In a case in which it is judged that the mode is switched, the hardware processor automatically switches the mode when the image former forms the image. In a case in which the type specifying mode is set, the hardware processor judges, based on sensing of at least one of the operation of opening and/or the operation of closing by the sensor, whether to switch the mode to the automatic sensing mode.

In an example, a print system include a component device that is operation in a number of state, a density engine, and a component engine. An example density engine identifies a plane region of a plane where print fluid is to be printed based on data of a print job and determines a density classifier for the plane based on a location of the plane region on the plane. An example component engine causes an adjustment of a component attribute of the component device based on the density classifier.

A setting device sets a print page to be clear-coated. When print data is obtained, the setting device displays a preview of a print page image represented by the print data (step S1040). The setting device further receives a designation for a print page image of which preview is displayed, and sets a print page corresponding to the print page image of which designation has been received as a print page to be clear-coated (step S1050).

An image forming apparatus includes a processor configured to: insert an unprinted page between unremoved pages in order to perform duplex printing, if a number of removed blank pages between the unremoved pages is an odd number of one or three or more on a digital file that has the blank pages removed when a document formed on duplex pages is read.

In some examples, a fuser for a printing device includes a memory device comprising corrective data corresponding to a reference color table for the printing device that is able to operate in a plurality of different modes, the corrective data comprising quantized coefficients derived from a compression of a difference color table including a plurality of difference nodes in which each difference node represents a value that is to be combined with a corresponding node of the reference color table, the quantized coefficients useable to produce a reconstructed difference table. The corrective data including residue values to combine with the reconstructed difference table to produce a customized color table for a selected mode of the plurality of different modes.