The present invention configures an image removing device capable of certainly and cleanly removing an image comprising an image forming substance and formed on the surface of a plastic recording material. An image removing device is provided with a means 2 for applying an ultraviolet curable resin and a means 4 for emitting ultraviolet light above a conveyance path for a recording material 1 on the surface of which an image is formed, and removes the image from the surface of the recording material 1 by transferring an image forming substance 1a to the ultraviolet curable resin and attaching the image forming substance, together with the ultraviolet curable resin, to the surface of a release body 5 by irradiating the ultraviolet light.

An enhanced paper for printing, including a substrate, an ablation resistant coating applied to the substrate, wherein the enhanced paper is ablation resistant so that it is not damaged by a light beam that illuminates enhanced paper with a fluence that ablates ink or toner but would damage standard printing paper that is made from cellulose fiber and is non-ablation resistant; and wherein the enhanced paper has physical properties of the standard printing paper for printing with laser printers and ink printers.

According to an embodiment, an image erasing apparatus includes a reading unit, an erasing unit, an image forming unit, and a controller. The reading unit reads identification information formed on a sheet conveyed. The erasing unit erases a part or all of a first image formed on the sheet after the identification information is read. The controller obtains image data corresponding to the identification information that is read by the reading unit. The controller controls the image forming unit so as to form a second image, which is indicated by the obtained image data, onto the sheet from which the first image has been erased.

A decoloring apparatus includes a sheet conveying unit, a scanner, a decoloring unit, and a controller. The decoloring unit decolors the image on the sheet conveyed through the sheet conveying unit. The decoloring unit is positioned downstream of the scanner in a sheet conveying direction. A distance along the sheet conveying direction between the scanner and the decoloring unit is shorter than a length of a first predetermined sheet size and longer than a length of a second predetermined sheet size. A controller determines whether the sheet conveyed by the sheet conveying unit is the first predetermined sheet size or the second predetermined sheet size. The controller performs a mode limiting process if the sheet size is determined to be the first predetermined sheet size.

A decoloring apparatus includes a sheet conveying unit, a scanner, a decoloring unit, and a controller. The decoloring unit decolors the image on the sheet conveyed through the sheet conveying unit. The decoloring unit is positioned downstream of the scanner in a sheet conveying direction. A distance along the sheet conveying direction between the scanner and the decoloring unit is shorter than a length of a first predetermined sheet size and longer than a length of a second predetermined sheet size. A controller determines whether the sheet conveyed by the sheet conveying unit is the first predetermined sheet size or the second predetermined sheet size. The controller performs a mode limiting process if the sheet size is determined to be the first predetermined sheet size.

A decoloring apparatus includes a sheet conveying unit, a scanner, a decoloring unit, and a controller. The decoloring unit decolors the image on the sheet conveyed through the sheet conveying unit. The decoloring unit is positioned downstream of the scanner in a sheet conveying direction. A distance along the sheet conveying direction between the scanner and the decoloring unit is shorter than a length of a first predetermined sheet size and longer than a length of a second predetermined sheet size. A controller determines whether the sheet conveyed by the sheet conveying unit is the first predetermined sheet size or the second predetermined sheet size. The controller performs a mode limiting process if the sheet size is determined to be the first predetermined sheet size.

A temperature detection device, includes a base material and a temperature indicator, which is provided on the base material, which contains a reversible heat discoloration composition material having color change temperature hysteresis in a normal temperature environment, and which changes color when a detected temperature reaches a threshold value or lower.

The present invention configures an image removing device capable of certainly and cleanly removing an image comprising an image forming substance and formed on the surface of a plastic recording material. An image removing device is provided with a means 2 for applying an ultraviolet curable resin and a means 4 for emitting ultraviolet light above a conveyance path for a recording material 1 on the surface of which an image is formed, and removes the image from the surface of the recording material 1 by transferring an image forming substance 1a to the ultraviolet curable resin and attaching the image forming substance, together with the ultraviolet curable resin, to the surface of a release body 5 by irradiating the ultraviolet light.

An image erasing apparatus according to an embodiment includes a sheet supply portion that supplies a sheet and an ejector. A first conveying path conveys the sheet from the sheet supply portion toward the ejector. A reader arranged on the first conveying path reads an image on the sheet. A second conveying path branches from the first conveying path at a downstream of the reader on the first conveying path and merges with the first conveying path at an upstream of the reader on the first conveying path. An erasing unit is arranged on the second conveying path. A conveying path changing portion is arranged at a branching portion. An operating portion receives a setup of the processing to the sheet. A controller changes a conveying path of the sheet in accordance with the setup received by the operating portion before the sheet is supplied from the sheet supply portion.

According to an embodiment, an image erasing apparatus includes a reading unit, an erasing unit, an image forming unit, and a controller. The reading unit reads identification information formed on a sheet conveyed. The erasing unit erases a part or all of a first image formed on the sheet after the identification information is read. The controller obtains image data corresponding to the identification information that is read by the reading unit. The controller controls the image forming unit so as to form a second image, which is indicated by the obtained image data, onto the sheet from which the first image has been erased.