Kabushiki Kaisha Toshiba

Toshiba Tec Kabushiki Kaisha

Koichiro Saito

Mikio Kakizaki

Atsushi Nakamoto

Osamu Takagi

Satoshi Kinouchi

Toshihiro Sone

Yoshinori Tsueda

A printer driver that is executable in a computer causes the computer to carry out a process including the steps of reading a first number of copies of a document to be printed with a decolorable material and a second number of copies of the document to be printed with a non-decolorable material, and generating a print command for a printer that causes the printer to print the first number of copies with the decolorable material and the second number of copies with the non-decolorable material.

Method of causing a printer to carry out a printing operation with decolorable material

Printer driver that causes a computer to generate a print command to print with decolorable material

An image forming apparatus includes a printer, an interface through which print data includes at least one of a first setting to form a first image with a decolorable colorant and a second setting to form a second image with a non-decolorable colorant, and a controller that determines whether the print data includes a layout setting to form a plurality of images on a sheet. If the print data includes the layout setting and only one of the first and the second setting, the printer forms the images with a corresponding one of the decolorable colorant and the non-decolorable colorant on the sheet based on the layout setting. If the print data includes the layout setting, the first setting and the second setting, the printer forms each of the first image and the second image on different sheets.

Image forming apparatus, image forming method and image forming system with decolorable printing and non-decolorable printing

Image forming apparatus, image forming method, and image forming system with decolorable printing and non-decolorable printing

A fixing device includes a heat roller having a degaussing alloy material, an induction heating member for exciting the heat roller, an inverter circuit for giving power at a predetermined frequency to the induction heating member, and a control unit, and when driving at a first drive frequency and fixing small size sheets by continuous passing, a local temperature rise occurs at an end part of the heat roller, and the end part approaches the Curie temperature, and when impedance of the inverter circuit reduces and an excessive current flows in the circuit, the fixing device drives at a higher second drive frequency, thereby increases a resistance of the heat roller by an epidermal effect of magnetic flux, increases an apparent resistance of the inverter circuit, makes it possible to use a flowing current within a normal range, heating a central part of the heat roller, and continues the fixing.

Fixing device, image forming apparatus, and heating control method for fixing device

Growing community of inventors

Kanagawa, Japan

Koichiro Saito