Abstract: An image forming apparatus picks up each one of sheets stacked in a tray, allows a detecting sensor to detect whether a mark indicating a reusable sheet is assigned to the picked-up sheet, and cumulates the sheet in which the mark is not detected by the detecting sensor in a cumulative unit. The image forming apparatus erases a color of an image forming material by heating the sheet of which the mark is detected by the detecting sensor and receives the sheet of which the image forming material is erased in a sheet cassette. The image forming apparatus forms an image with the image forming material erasable by applying heat to the sheet received in the sheet cassette.

Abstract: An image forming apparatus mounted with a toner cartridge having a memory unit includes a toner cartridge which stores a plurality of control data depending on toner in the memory unit, an acquisition unit which selects one of the plurality of control data in the memory unit and acquires image formation-related information and a setting unit which sets image formation parameters on the basis of the image formation-related information.

Abstract: There is provided an image forming apparatus including: an image data acquiring unit that acquires image data of an image formed on a sheet; an identification information acquiring unit that acquires identification information that identifies the sheet on which the image is formed; an image forming unit that forms an image based on the image data acquired by the image data acquiring unit on the sheet with a decolorable colorant which becomes colorless by a predetermined chemical reaction and that forms an identification information image based on the identification information on the sheet with a non-decolorable colorant which does not become colorless by the chemical reaction by which the decolorable colorant becomes colorless; and a storage control unit that stores the identification information and the image data of the image to be formed on the sheet, on which the identification information image corresponding to the identification information is formed, in a predetermined storage region in a correlated m

Abstract: An image forming apparatus includes an image forming portion to form an image on a sheet using an erasable ink, a sheet supply tray to load the sheet on which the image was formed using the erasable ink, a mark detecting portion to detect a mark indicating that the image formed on the sheet conveyed from the sheet supply tray includes a confidential information, and an overwriting portion to overwrite so as not to make recognizable the image of at least an area including the confidential information out of the image formed on the sheet, in case that the mark is detected by the mark detecting portion.

Abstract: An image forming apparatus picks up each one of sheets stacked in a tray, allows a detecting sensor to detect whether a mark indicating a reusable sheet is assigned to the picked-up sheet, and cumulates the sheet in which the mark is not detected by the detecting sensor in a cumulative unit. The image forming apparatus erases a color of an image forming material by heating the sheet of which the mark is detected by the detecting sensor and receives the sheet of which the image forming material is erased in a sheet cassette. The image forming apparatus forms an image with the image forming material erasable by applying heat to the sheet received in the sheet cassette.

Abstract: A toner cartridge includes a recording unit that records a deterioration table in which a reference value of a deterioration degree is specified for each of constituent members and a load characteristic table in which the deterioration degree corresponding to an operation state of an image forming apparatus in which the toner cartridge is inserted is specified, a transmitting and receiving unit that performs transmission and reception with the image forming apparatus in which the toner cartridge is inserted, a deterioration counter that extracts the deterioration degree for each of the constituent members from the load characteristic table according to an operation state of the image forming apparatus and counts the deterioration degree for each of the constituent members, and a control unit that compares the deterioration degree counted by the deterioration counter and the reference value specified in the deterioration table.

Abstract: An image forming apparatus mounted with a toner cartridge having a memory unit includes a toner cartridge which stores a plurality of control data depending on toner in the memory unit, an acquisition unit which selects one of the plurality of control data in the memory unit and acquires image formation-related information and a setting unit which sets image formation parameters on the basis of the image formation-related information.