Toshiba Tec Kabushiki Kaisha

Kabushiki Kaisha Toshiba

Other

Tdk Corporation

Kabushiki Kaisha Tec

Kabuhsiki Kaisha Toshiba

Toshiba Hokuto Electronics Corporation

Kazuhiko Kikuchi

Osamu Takagi

Satoshi Kinouchi

Hiroshi Nakayama

Yohei Doi

Toshihiro Sone

Kenji Takano

Chie Miyauchi

Ryota Saeki

Masahiko Ogura

Taizo Kimoto

Hisaaki Kawano

Sasuke Endo

Noriyuki Umezawa

Masanori Takai

Yuki Kawashima

Eiji Shinohara

Kousei Miyashita

Masaya Tanaka

Kiyotaka Murakami

Ryosuke Kojima

Yoshinori Tsueda

Tetsuo Kitamura

Toyoyasu Kusaka

Shuji Yokoyama

Akihiro Wasai

Kazutoshi Takahashi

Naruhito Yoshida

Takaho Watanabe

Masahiro Doi

Shin Yamauchi

Kazushige Morihara

Shinji Maruyama

Tadashi Noguchi

Ken Iguchi

Minoru Yoshida

Akira Sasaki

Shigeru Fujiwara

Shoko Shimmura

Akitoshi Yoshii

Tokihiko Ise

Takafumi Amano

Takashi Kamiya

Kazuhisa Takeda

Yasunari Miyazaki

Yuichi Yokoyama

Tadashi Sugiyama

Satoshi Himeno

Kouji Hirano

Tomohiro Matsunai

Hiroaki Yamauchi

Yasuhiro Ebata

Takeshi Watanabe

Masao Yamaguchi

Mitsuaki Kohyama

Mitsuaki Kouyama

Katsutoshi Mita

Tetuji Maruno

Shintarou Kon

Hiromi Kikuchi

Toshiaki Ochiai

Toshiya Inomata

Noiryuki Umezawa

A heating device includes a substrate, one or more heating elements arranged along the substrate, a heat conductor contacting the substrate, a plurality of thermometers each configured to measure a temperature of the heat conductor, and a plurality of thermostats each configured to measure a temperature of the heat conductor and interrupt electrical power supplied to the heating elements. The thermometers and the thermostats are alternately arranged in a longitudinal direction of the substrate.

Heating device with thermometers and thermostats alternately arranged on a heat conductor

A heater is to face a pressure element via a belt and is to heat the belt. The pressure element sandwiches and conveys a sheet together with the belt. The heater includes a substrate, a heat generating element, a couple of electrodes, and a protective layer. There are the electrodes on both sides of the heat generating element in a conveyance direction of the sheet. Both sides of the heat generating element in the conveyance direction are connected to adjacent electrodes.

Heater, fixing device, and image forming apparatus

In one embodiment, an image forming apparatus includes a fixing device with a heating element to heat a sheet. A controller is configured to control electric power supplied to the heating element based on a prior use metric. The controller reduces the electric power supplied to the heating element during a startup period if an electric power level supplied from a power supply is equal to or greater than a threshold value and the prior use metric is equal to or greater than a reference value.

Image forming apparatus with controller for adjusting power supplied to heating element of fixing device based on cumulative prior use metric

A heating device according to an embodiment generally includes substrate, blocks, and temperature sensors. The blocks are arranged on the substrate with a gap therebetween in a first direction. The temperature sensors are provided for each of the blocks and detect the temperature of the blocks. The block includes a plurality of first blocks on at least one side in the first direction, and the first block is adjacent to two blocks in the first direction, and the temperature sensor detects temperature of a temperature detection region on the first block, which is closer to the one of the adjacent two blocks being longer in the first direction of the two blocks.

Heating device and fixing device and image forming apparatus

An image processing apparatus includes a fixing unit including a belt, and a heater configured to heat the belt and including a substrate and a heating layer that is formed on the substrate, and a controller configured to shut off the heater if no current flows through the belt.

Image forming apparatus having a fixing unit and heating control method

A heating device includes a rotatable film, a heater disposed inside the film and including a substrate that extends along a first direction and having two surfaces opposite to each other, and a heater element on one of the surfaces of the substrate, and a heat conductor including a first portion contacting the other surface of the substrate, and a second portion that is adjacent to the first portion in a second direction perpendicular to the first direction and does not contact the other surface of the substrate. A width of the second portion is wider than the heater element in the second direction.

Heating device with a heat conductor including portions having different thicknesses

An image forming apparatus includes a fixing unit including a heater including a first surface and a second surface opposite to the first surface, a fixing belt having a surface to which a lubricant is applied and contacting the first surface through the lubricant, a heat conductor contacting the second surface, and a pressing roller capable of pressing and rotating the fixing belt, a power supply configured to supply electric power to the heater, a first thermometer configured to measure temperature of the heat conductor, and a controller configured to determine a first amount of electric power to be supplied to the heater based on the temperature of the heat conductor, and control the power supply to supply the determined first amount of electric power to the heater, before controlling the pressing roller to start rotation.

Image forming apparatus and image forming method

A heater is to face a pressure element via a belt and is to heat the belt. The pressure element sandwiches and conveys a sheet together with the belt. The heater includes a heat generating element, a couple of electrodes, and a protective layer. there are the electrodes on both sides of the heat generating element in a conveyance direction of the sheet. Both sides of the heat generating element in the conveyance direction are connected to adjacent electrodes.

A fixing unit or device that can be used in an image forming apparatus includes a first heater element that is formed of a material that increases in electrical resistance with increases in temperature. A controller of the fixing unit is configured to vary a duty ratio of electric power applied to the first heater element during a start-up operation in which the temperature of the first heater element is raised to a target operating temperature. By varying the duty ratio during the start-up operation, changes in the resistance of the first heater element with the heating can be compensated. For example, the duty ratio can be increased during the course of the start-up to achieve the target operating temperature faster.

Image forming apparatus and heating method

A heating apparatus includes a cylindrical film and a pressing element that rotates with the cylindrical film and forms a nip with the cylindrical film. A medium is conveyed through the nip from an upstream side to a downstream side. The heating apparatus further includes a heater arranged inside the cylindrical film and on which a heating element is disposed. An upstream end of the heater is located downstream of an upstream end of the nip, and a downstream end of the heater is located downstream of a downstream end of the nip.

Heating apparatus having a cylindrical film and a pressing element to form a nip

An image processing apparatus includes a fixing unit including a fixing belt, and a heater configured to heat the fixing belt and including a substrate and a heating layer that is formed on the substrate, and a controller configured to, upon detecting an absence of a current flowing through the fixing belt, control the heater to not generate heat.

An image forming apparatus includes a transfer unit for transferring a toner image onto a sheet, a fixing device for fixing the image, the fixing device including a heating member including a heat generating element and electrodes on both sides of the heat generating element in a sheet conveyance direction and connected to the heat generating element, and a pressure element for pressing against the heating member, and a controller for controlling an adjustment mechanism so that a distance between the heating member and the pressure element becomes a first distance during a fixing process and a second distance larger than the first distance during temperature raising of the heating member, which is conducted before the fixing process.

Image forming apparatus, and adjustment method for distance between heating member and pressure element of fixing device

According to an embodiment, a heater unit includes a substrate. A first heating element is on a first side of the substrate. A second heating element is on a second side of the substrate. A first wiring is on the first side of the substrate and connected to the first heating element. A first electrode is on the first side of the substrate and connected to the first heating element. A second wiring is on the second side of the substrate and connected to the second heating element. A second electrode is on the second side of the substrate and connected to the second heating element via the second wiring. A portion of the second heating element overlaps a first portion of the first heating element.

Heater unit, fixing device, and image forming apparatus

Growing community of inventors

Yokohama, Japan

Kazuhiko Kikuchi