Toshiba Tec Kabushiki Kaisha

Kabushiki Kaisha Toshiba

Other

Toshiba Tec Kabushiki Toshiba

Toshihiro Sone

Satoshi Kinouchi

Osamu Takagi

Yoshinori Tsueda

Kazuhiko Kikuchi

Hiroshi Nakayama

Ryota Saeki

Yohei Doi

Masanori Takai

Tetsuo Kitamura

Toyoyasu Kusaka

Kazutoshi Takahashi

Shoko Shimmura

Shuji Yokoyama

Masahiro Doi

Shigeru Fujiwara

Takafumi Amano

Tadashi Noguchi

Hiroyuki Ishikawa

Mitsuaki Kouyama

Katsutoshi Mita

Koichiro Saito

According to an embodiment, a heating device includes a cylindrical belt, a heater, a press roller, and a holder. The heater is disposed on an inner surface of the belt. The press roller rotates and is configured to contact an outer surface of the belt at a position opposite the heater to form a nip. The end portions of the press roller project by a first amount in a radial direction more than the central portion of the press roller. A holder has a first surface supporting the heater to face the cylindrical belt. The holder has a second surface that is opposite of the first surface with a center portion projecting in a direction orthogonal to the first surface more than the end portions of the second surface by a second projection amount that is greater than the first projection amount.

Heating device and image processing apparatus

A fixing device includes a tubular body in a tubular shape that forms a nip with a pressurizing member. The heater, disposed inside the tubular body, faces a part of the tubular body in a circumferential direction. The heat equalizing member is disposed on an opposite side of a side where the heater faces the tubular body. The heat equalizing member transfers heat from a place having a high temperature to a place having a low temperature in a second direction along an axial direction of the tubular body. The heat conductive member, disposed between the heater and the heat equalizing member, can conduct the heat in each of the second direction and a first direction in which the heater and the heat equalizing member face each other. A side portion of the heat conductive member in the second direction is divided into three or more portions.

Fixing device

A fixing device for an image forming apparatus has a tubular fixing member that has a lubricant-coated inner surface. A rotating member contacts an outer surface of the fixing member. A heater is on an inner surface side of the fixing member at a first position. A pressing member presses against the inner surface of the fixing member at a second position. The pressing member extends beyond the outer edges of the fixing member and includes first grooves in an outward facing surface that contacts the inner surface of fixing member. At least one first groove has end portion that extends beyond an outer edge of the fixing member, an inner portion inside the outer edges of the fixing member, and connecting portion connecting the two other portions. The connector portion is angled inward toward a center of the fixing member and crosses the outer edge of the fixing member.

According to an embodiment, a fixing device includes rotating body that is rotatably supported, a heater that heats the rotating body, a pressing body that is pressed against the rotating body to form a nip through which print media passes to a media conveyance path, and a water vapor discharge passage downstream of the nip from rotating body. The water vapor discharge passage is separate and distinct from the media conveyance path. The fixing device may be used in image forming apparatuses and the like.

Fixing device and image forming apparatus

According to one embodiment, a fuser includes a heat roller, an endless belt, a first press roller and a second press roller. The heat roller rotates and contacts a toner surface side of a sheet, and heats the sheet. The endless belt contacts a part of an outer peripheral surface of the heat roller. The first press roller contacts a part of an inner peripheral surface of the endless belt, and is provided at an insertion part of the sheet in a nip portion where the heat roller contacts the endless belt. The second press roller contacts a part of the inner peripheral surface of the endless belt, is provided at an exit part of the sheet in the nip portion, and has a lower rotational resistance than the first press roller.

Fuser using endless belt and image forming apparatus

A fixing device according to an embodiment includes a first rotator, a belt, and a second rotator. The belt forms a nip by abutting onto a surface of the first rotator. The second rotator is disposed to abut onto an inner circumferential surface of the belt. The second rotator presses the belt against the first rotator such that the dynamic frictional force between the inner circumferential surface of the belt and the second rotator becomes equal to or smaller than 0.98 N.

In accordance with an embodiment, a fixing device comprises a first rotating body; a second rotating body configured to face the first rotating body and be stretched over a plurality of rotating bodies; and a first mechanism configured to enable at least one among a plurality of the rotating bodies to move to change a nip width between the first rotating body and the second rotating body.

Fixing device for changing a nip width

A fixing device includes a fixing unit configured to heat a sheet to fix an image on the sheet, a heating unit configured to heat the fixing unit, and a heat conduction unit disposed adjacent to a heated surface of the fixing unit. The fixing unit includes a first region not in contact with the sheet during heating of the sheet and a second region that is in contact with the heated sheet during heating of the sheet and has a temperature lower than the first region as a result of the contact with the sheet during the heating. The heat conduction unit is configured to transfer heat from the first region to the second region.

Fixing device and image forming apparatus having the same

In accordance with an embodiment, an image forming apparatus comprises a fixing apparatus which fixes a toner image formed on an image receiving medium. The fixing apparatus comprises an endless belt, a roller facing the belt, and a nip pad which faces the roller across the belt and presses the belt together with the roller. A coating layer is formed on a surface of the nip pad which faces the belt. The coating layer is constituted by a simple substance or a compound having at least one kind of elements selected from a group 6 element and a group 14 element.

Growing community of inventors

Yokohama, Japan

Toshihiro Sone