Kabushiki Kaisha Toshiba

Toshiba Tec Kabushiki Kaisha

Hiroshi Katakura

Noboru Furuyama

Setsuo Takada

Yukio Futamata

Hiroshi Ishii

Chie Miyauchi

Yoshiaki Okano

Masaya Tanaka

Satoshi Itaya

Katsutoshi Mita

Naomi Nakane

Taizo Nozawa

In accordance with an embodiment, an image forming apparatus comprises an image forming section, a fixing section and a controller. The image forming section forms a toner image with at least one selected from a first toner having a first fixing temperature area and a second toner having a second fixing temperature area of which a lower limit fixing temperature is higher than the first toner. The fixing section fixes the toner image on the sheet. The controller controls a standby temperature of the fixing section to a temperature lower than the lower limit fixing temperature of the second fixable temperature area.

Image forming apparatus and image forming method for processing different fixing temperatures of different toners

An image forming apparatus includes a fixing device configured to fix a toner to a recording medium, a cooling device disposed so as to cool the fixing device with forced air, and a rotatable guide configured to guide the recording medium towards a first location when in a first position and towards a second location when in a second position. The rotatable guide partially blocks the forced air at the first position and forms a pathway for the forced air when at the second position. A control unit rotates the guide unit to the second position if an operating mode of the fixing device is changed from a first mode having a fixing temperature set point at a first temperature to a second mode having a fixing set point temperature lower than the first temperature.

Image forming apparatus

A fixing device includes a roller, a pressing member pressed against the roller, such that when a sheet having an unfixed image is passed thorough a nip formed between the roller and the pressing member, the unfixed image is fixed on the sheet, a first heater configured to heat the roller, a second heater configured to heat the pressing member, and a controller configured to control the second heater, such that a time-averaged heat generation by the second heater when an image of a decolorable material is fixed is greater than a time-averaged heat generation by the second heater when an image of a non-decolorable material is fixed.

Fixing device that fixes images of decolorable and non-decolorable materials

In accordance with an embodiment, an image decoloring apparatus comprises a conveyance path configured to convey a sheet on which an image is formed with a coloring agent that is decolored by heat; a first heat roller configured to be arranged at the upstream side of the conveyance path; and a second heat roller configured to be arranged at the downstream side of the conveyance path. Each of the first heat roller and the second heat roller includes a cylindrical portion and a heat source. The thickness of the cylindrical portion constituting the first heat roller is larger than the thickness of the cylindrical portion constituting the second heat roller. In this way, the heat capacity of the first heat roller is also larger than the heat capacity of the second heat roller.

Image decoloring apparatus

In accordance with an embodiment, a character recognition apparatus comprises a decolorization control section configured to carry out a decolorization processing for a sheet; an image reading control section configured to carry out an image reading processing for the sheet to which the decolorization processing is carried out; and a character recognition processing section configured to carry out a character recognition processing for a decolorized image read through the reading processing after the decolorization processing is carried out or for a generated image generated according to the decolorized image.

Character recognition apparatus and character recognition method

In accordance with an embodiment, an image forming apparatus controls the heating of a fixing section in such a manner that the heating mode is switched to a second heating mode through a switching section in a case in which the temperature of a heating section is lower than a predetermined temperature, and the heating mode is switched to a first heating mode through a switching section in a case in which the temperature of the heating section is equal to or higher than the predetermined temperature.

Image forming apparatus and control method comprising heating modes

An image forming apparatus includes an image forming unit configured to form an image on a first medium at an image forming position, a fixing unit configured to fix the image formed on the first medium by heating the first medium at a first temperature, a conveying unit configured to convey the first medium to the fixing unit through a first path extending from the image forming position to the fixing unit and convey a second medium to the fixing unit through a second path that merges with the first path at a position between the image forming position and the fixing unit, and a control unit configured to control the fixing unit to be a second temperature that is higher than the first temperature, when the control unit determines that the conveying unit is conveying the second medium to the fixing unit through the second path.

Image forming apparatus having multiple medium paths to a fixing unit

In accordance with one embodiment, an image forming apparatus comprises a plurality of image forming sections including e a cleaner section for removing the toner left on the image carrier after the image is transferred to the image formed medium. At least one of the plurality of image forming sections is provided with a toner recycling section for collecting the toner removed by the cleaner section and reusing the collected toner in the image formation again. Control section separates the image forming section provided with the toner recycling section from the transfer position of the transfer section in a case in which the image forming section provided with no toner recycling section is forming an image.

Image forming apparatus and image forming method

An embodiment provides an image forming apparatus including: a job acquiring unit that acquires an image forming job that gives instructions for performing forming of an image; an image forming process control unit that controls performance of the image forming job that the job acquiring unit acquires; a temperature information acquiring unit that acquires information showing temperature of the heating rotary body; a determining unit that determines whether the temperature of the heating rotary body which is acquired by the temperature information acquiring unit is equal to or higher than a predetermined stand-by temperature set as a temperature in a stand-by state that stands by to perform the image forming process, when the image forming process is completed, based on the image forming job by the image forming process control unit; and a fixing device control unit.

Image forming apparatus, control method, and recording medium

According to one embodiment, an image forming apparatus includes an image forming portion, a fixer, a control operation selection portion which selects any one of a monochrome control operation of keeping the fixing temperature at a first temperature at which a monochrome image can be fixed, and a color control operation of keeping the fixing temperature at a second temperature higher than the first temperature, and a controller. In the state in which the monochrome control operation is selected, when the fixing temperature reaches the first temperature during rise, the controller executes a monochrome ready display and the monochrome control operation, the controller raises the fixing temperature up to the second temperature to print the color image when printing of a color image is instructed while the monochrome control operation is executed, and the controller executes the monochrome control operation after printing the color image.

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Numazu Shizuoka, Japan

Hiroshi Katakura