Systems and methods for printing data on a substrate including a color-changeable material are provided. One system includes a processing circuit and a device including an energy source. At least a portion of a printed publication is printed on the substrate using a commercial printing press based on fixed data. The device including the energy source is configured to add variable data to the substrate. The processing circuit is configured to receive the variable data and to control the energy source to change a color of the color-changeable material based on the variable data to provide at least a portion of the printed publication. The processing circuit is configured to control the energy source to change the color of the color-changeable material in-line with a flow of the substrate through one of a printing line, a finishing line, or a packaging line of the commercial printing press.

Liquid electrophotography apparatus including a plurality of members defining a flow path for a printing liquid. At least a first member of the plurality of members is arranged to generate an electric field. The liquid electrophotography apparatus also includes a first insulation layer arranged around at least a portion of a surface of the first member to prevent electrical discharge from the printing liquid.

In a case where conveyance abnormality of a sheet has occurred on a conveyance passage in course of execution of a print job which uses sheets included in a sheet set including a plurality of sheets with sequentiality stored in a first sheet feed tray and discharges a sheet having been subjected to image formation to a first discharge section of the plurality of discharge sections, conveyance of a causal sheet having caused the conveyance abnormality is stopped, and sheets having been being conveyed on the conveyance passage on an upstream side than the causal sheet are discharged to other discharge section other than the first discharge section. Thereafter, continuously, sheets located before a sheet to be fed first at a time of performing recovery printing after elimination of conveyance abnormality, are fed from the first sheet feed tray, and discharged the sheets to the other discharge section.

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 transport device includes a powder applying device and a guidance member. The powder applying device is provided in a guide path through which a sheet is guided toward an image holding body holding a toner image to be transferred onto the sheet, and applies powder to end portions of the sheet in a transport direction. The guidance member is provided on a side facing the powder applying device in the guide path, and guides the sheet being transported through the guide path to the powder applying device.

In accordance with an embodiment, an image forming apparatus comprises a fixing section, a sheet housing section, and a sheet passing controller. The fixing section fixes a developer by heating a label paper onto which the developer is transferred. The sheet housing section houses a cleaning sheet from which adhesive leaking out from the label paper and adhering to the fixing section is removed. The sheet passing controller conveys the cleaning sheet from the sheet housing section to the fixing section.

An image forming apparatus includes an image forming section and a controller. The image forming section selectively forms a first toner image to be printed on transfer paper other than plain paper with use of a toner and forms a second toner image to be printed on the plain paper with use of the toner. The controller controls the image forming section and thereby makes a first area density of the toner in the first toner image and a second area density of the toner in the second toner image differ from each other.

In an image forming apparatus, a calculation processing portion includes an input portion and an input-portion abnormality determining portion. The input portion is connected to a temperature detection portion. When an abnormality detection circuit has detected that a temperature detected by the temperature detection portion is an abnormally heated temperature, the input-portion abnormality determining portion determines whether or not a first temperature calculated as a temperature of a fixing member is lower than a predetermined second temperature, and upon determining that the first temperature is lower than the second temperature, determines that the input portion is abnormal.

A heating system includes a heater compatible with plural heating methods and configured to heat a heating target in a non-contact manner, and one or more processors. The one or more processors are configured to switch a heating method to be used for heating the heating target depending on a material of the heating target.

An image forming system includes: a transporter that transports an object; a transfer unit that transfers an image onto the object transported by the transporter; a fixing unit that fixes, onto the object, the image transferred by the transfer unit; and a processor configured to: in a first mode, exert control to obtain the state in which the fixing unit enables an image to be fixed; and, in a second mode, exert control to obtain the state in which the fixing unit does not fix an image.