ROLLER FOR FIXING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS

PROBLEM TO BE SOLVED: To provide a roller for a fixing device that can reduce deviation in the axial direction of a counterpart member, such as a fixing belt forming a nip without impairing durability, a fixing device including such a roller, and an image forming apparatus.SOLUTION: There is provide...

Full description

Saved in:
Bibliographic Details
Main Authors YAJIMA KENTARO, TAKAI ATSUSHI, YASUSE NORIHIKO, IZAWA SHUHEI, KUROSAWA YOSHITAKA, MARUBAYASHI HIROAKI, ENDO TAKASHI, KOBAYASHI TORU, NAKA SOICHIRO, TANAKA DAISUKE
Format Patent
LanguageEnglish
Japanese
Published 05.09.2016
Subjects
BEARINGS
BLASTING
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
ELEMENTS OR CRANKSHAFT MECHANISMS
ENGINEERING ELEMENTS AND UNITS
FLEXIBLE SHAFTS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
HOLOGRAPHY
LIGHTING
MAGNETOGRAPHY
MECHANICAL ENGINEERING
PHOTOGRAPHY
PHYSICS
ROTARY BODIES OTHER THAN GEARING ELEMENTS
SHAFTS
THERMAL INSULATION IN GENERAL
WEAPONS
Online AccessGet full text

Cover

More Information
Summary:PROBLEM TO BE SOLVED: To provide a roller for a fixing device that can reduce deviation in the axial direction of a counterpart member, such as a fixing belt forming a nip without impairing durability, a fixing device including such a roller, and an image forming apparatus.SOLUTION: There is provided a roller for a fixing device including a foam elastic layer that is formed of a porous material having composite bubbles formed by a plurality of bubbles partially overlapped with each other on the outer peripheral surface of a columnar or cylindrical core bar, where the size of the composite bubbles of the porous material present on a cross section in a plain surface including the shaft of the core bar is 0.1 μm or more and 50 μm or less, and orientation angles with respect to the shaft at which the sequence of the composite bubbles shows the most strong periodicity are inverted to each other with the vicinity of the center part in the axial direction as a boundary.SELECTED DRAWING: Figure 10 【課題】耐久性を損なわずに、定着ベルト等のニップを形成する相手側部材の軸方向の寄りを低減させることが可能な定着装置用ローラ、このようなローラを有する定着装置、および、画像形成装置を提供する。【解決手段】円柱状または円筒状の芯金の外周面に、複数の気泡が部分的に互いに重なり合って複合して形成された複合気泡を有する多孔質体により構成された発泡弾性層を備えた定着装置用ローラにおいて、前記多孔質体の、前記芯金の軸を含む平面における断面に存在する前記複合気泡の大きさが０．１μｍ以上５０μｍ以下で、かつ、前記複合気泡の配列が最も強い周期性を示す、前記軸に対する配向角が、前記軸方向中央部付近を境界として互いに反転している定着装置用ローラ。【選択図】図１０
Bibliography:Application Number: JP20150038356