A white toner includes a toner particle that contains a binder resin containing a hybrid resin in which an amorphous resin unit and a crystalline polyester resin unit are chemically bonded to each other, surface-treated titanium oxide, and a release agent, in which a proportion of Al atoms in a surface of the surface-treated titanium oxide is 3 atomic % or greater and 20 atomic % or less, and a proportion of Ti atoms in the surface is 5 atomic % or greater and 15 atomic % or less.

An image forming apparatus including a print engine, a gloss treatment device, a medium conveying device, and a processor. The print engine is to form an image on a print medium. The gloss treatment device is to perform a gloss treatment on the print medium on which an image is formed. The medium conveying device to provide the print medium to the print engine and selectively provide the print medium on which an image is formed to the gloss treatment device. The processor is to control the print engine to form an image based on print data and control the medium conveying device to selectively provide the print medium to the gloss treatment device depending on whether a gloss treatment option is set in the print data.

A glossiness detector includes a glossiness sensor, a glossiness corrector, and a reference plate. The glossiness corrector corrects glossiness detected by the glossiness sensor. The reference plate is used for correction processing of the glossiness sensor. Then, the glossiness corrector acquires a glossy reflection profile of the reference plate that has been detected in advance. The glossiness corrector corrects the glossiness according to the reference plate on the basis of the glossy reflection profile and a gloss distribution of the reference plate that has been detected by the glossiness sensor.

An image forming system includes an image forming unit for forming an image on a recording medium, a varnish applying unit for applying varnish to the image on the recording medium, and a control unit for controlling the image forming unit to form a first image and a second image and for controlling the varnish applying unit to apply varnish to the first image and the second image such that a first varnish application amount of the first image applied by the varnish applying unit is different from a second varnish application amount of the second image applied by the varnish applying unit.

An image forming system includes an image forming unit, a varnish applying unit, a control unit that executes an operation in an image forming mode in which a toner image is formed on a recording material and a varnish image is formed on the recording material on which the toner image is formed, and an input unit that permits input of a line width adjusting value of either one of a line width of a portion of the varnish image overlapping with an image portion and a line width of a portion of the varnish image overlapping with a non-image portion, wherein the varnish image is formed so as to extend over an image portion where the toner image is formed on the recording material and a non-image portion where the toner image is not formed on the recording material.

A method of printing a toner, including: rotating a cylinder having a printing plate with a fixed pattern; transferring a toner from a vessel onto the fixed pattern of the printing plate, in which the toner includes a pigment with a metallic reflective layer; and transferring the toner onto a substrate; in which the fixed pattern defines select portions of an image; and in which the toner correlates to the selected portions of the image is disclosed.

An image forming system includes an image forming apparatus, a varnish application apparatus, and a controller. When the image forming apparatus is in a standby state and preheating of varnish in a tank by a heater is completed, if an image forming job of forming a toner image on a first recording material and applying varnish thereto by a varnish coater is received, the controller controls a guide member to guide the first recording material to a first conveyance path. When the image forming apparatus is in a standby state and preheating of varnish in the tank by the heater is not completed, if an image forming job of forming a toner image on a second recording material and not applying varnish thereto by the varnish coater is received, the controller controls the guide member to guide the second recording material to a second conveyance path.

An image forming system includes an image forming unit, a varnish coating unit, a reception unit, and a control unit. The image forming unit executes an image forming process of forming an image on types of recording media including a first type of recording medium with a coated layer and a second type of recording medium without a coated layer. The varnish coating unit executes a varnish coating process of varnish coating a recording medium on which an image is formed by the image forming unit. The reception unit receives a printing job from a user. The control unit controls the varnish coating unit. When the printing job received by the reception unit is a printing job for executing the varnish coating process on the second type of recording medium, the control unit controls the varnish coating unit to prevent the varnish coating unit from executing the varnish coating process.

A printing machine including a printing plate on a surface of a rotating cylinder, in which the printing plate has a fixed pattern for receiving a toner; a vessel containing the toner, which includes a pigment and a thermoplastic binder, in which the fixed pattern is a permanent pattern in a form of selected portions of an image is disclosed. A plate for use in the printing machine is also disclosed. A printing system is also disclosed.

An image forming system includes an image forming apparatus configured to form a toner image on a recording material, a varnish application apparatus configured to apply a varnish to the recording material, and a control unit. The control unit is configured to apply a first application amount of varnish to the recording material per unit area in a case of executing the image forming job for forming a varnish layer on a recording material having a first grammage, and is configured to apply a second application amount of varnish to the recording material per unit area in a case of executing the image forming job for forming the varnish layer on a recording material having a second grammage smaller than the first grammage, the second application amount being larger than the first application amount.