公开(公告)号：US20190317433A1

公开(公告)日：2019-10-17

申请号：US16375897

申请日：2019-04-05

Applicant: Konica Minolta, Inc.

Inventor： Taiga HIATE ,  Takuto SHIBUYA

IPC: G03G15/20

Abstract: A fixing device of an image forming apparatus includes: a fixing belt, a heat source that heats a portion of the fixing belt; and a pressure roller that forms a nip between the pressure roller and the fixing belt and that transports a sheet. In the heat source, a standby temperature (setting temperature in a suspension standby mode) in a standby state in which rotation of the fixing belt is suspended is set to be higher than a printing temperature in a printing state.

公开(公告)号：US20160282777A1

公开(公告)日：2016-09-29

申请号：US15058568

申请日：2016-03-02

Applicant: KONICA MINOLTA, INC.

Inventor： Takuto SHIBUYA ,  Naoki YAMAMOTO ,  Koji TAKAHASHI

IPC: G03G15/20

CPC classification number: G03G15/2039 ,  G03G15/2046 ,  G03G2215/0132 ,  G03G2215/2032

Abstract: A fixing device includes a leading-end fixing value output part to output a leading-end fixing value indicating a leading-end fixing temperature and a leading-end separation value output part to output a leading-end separation value indicating a leading-end separation temperature. These output parts both output a higher value as a leading-end toner value representing a toner adhesion amount of a toner image in a leading area of a sheet is higher. A controller of the fixing device performs separation control to control a heating temperature by a heating source so that a leading-end set temperature at a fixing nip while the sheet leading area is passing through the fixing nip becomes equal to or higher than the leading-end fixing temperature. When the leading-end fixing value is lower than the leading-end separation value, the leading-end set temperature becomes equal to or higher than the leading-end separation temperature.

Abstract translation: 定影装置包括前端定影值输出部，输出表示前端定影温度的前端定影值和前端分离值输出部，输出表示前端分离的前端分离值 温度。 这些输出部分作为表示片材的前导区域中的调色剂图像的调色剂附着量的前端调色剂值输出较高的值较高。 定影装置的控制器执行分离控制以通过加热源控制加热温度，使得当片材引导区域通过定影辊隙时的定影辊隙处的前端设定温度等于或高于引导区域， 结束定影温度。 当前端定影值低于前端分离值时，前端设定温度变得等于或高于前端分离温度。

公开(公告)号：US20200218183A1

公开(公告)日：2020-07-09

申请号：US16713912

申请日：2019-12-13

Applicant: Konica Minolta Inc.

Inventor： Takuto SHIBUYA

IPC: G03G15/20

Abstract: A fixing device includes: an endless fixing belt; a heat source that is disposed on an inner circumferential side of the fixing belt and is capable of adjusting an amount of heat generation with supplied electric power; a pressure receiver disposed on the inner circumferential side of the fixing belt; a pressure applier that presses the pressure receiver, to form a fixing nip with the fixing belt; a temperature detector that detects a temperature of an outer circumferential surface of the fixing belt in the heat source; a controller that controls power supply to the heat source, to adjust a detected temperature to be detected by the temperature detector to a target temperature; a temperature difference detector that detects a temperature difference between an inner circumferential surface and the outer circumferential surface of the fixing belt; and a corrector that corrects the target temperature of the controller.

公开(公告)号：US20170235260A1

公开(公告)日：2017-08-17

申请号：US15433453

申请日：2017-02-15

Applicant: Konica Minolta, Inc.

Inventor： Takuto SHIBUYA

IPC: G03G15/20

CPC classification number: G03G15/2053 ,  G03G15/2064 ,  G03G15/50

Abstract: A fixing device includes: a fixing member; a pressurizing member provided in contact with the fixing member and configured to pressurize a sheet passing through a contact portion between the fixing member and the pressurizing member, against the fixing member; and a heater configured to heat the fixing member to provide heat to the sheet passing through the contact portion. The fixing member includes a heat storage material having a property that changes, by external energy, from a first solid phase to a second solid phase whose internal energy is higher than that of the first solid phase, and a property that changes from the second solid phase to the first solid phase by pressure and radiates heat during the phase change. The external energy includes thermal energy of the fixing member heated with the heater. The pressure includes a contact pressure between the fixing member and the pressurizing member.