ELASTIC MEMBER, CHARGING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

• Main Authors: TOMARI SHOGO, HOSHIO TAKUO
• Format: Patent
• Language: English; Japanese
• Published: 09.03.2017
• Subjects: BEARINGS; BLASTING; CHEMISTRY; CINEMATOGRAPHY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; 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; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; MAGNETOGRAPHY; MECHANICAL ENGINEERING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PHOTOGRAPHY; PHYSICS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; THEIR PREPARATION OR CHEMICAL WORKING-UP; THERMAL INSULATION IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To provide an elastic member including an elastic layer that has suppressed a reduction in pulling strength.SOLUTION: There is provided an elastic member comprising an elastic layer that includes a rubber material and a softening agent having a number average molecular weight Mn of 600 or more and 1000 or less, where the ratio of the weight average molecular weight Mw to the number average molecular weight Mn (Mw/Mn) is 2.5 or less.SELECTED DRAWING: Figure 1 【課題】引張り強さの低下が抑制された弾性層を有する弾性部材を提供すること。【解決手段】ゴム材料と、数平均分子量Ｍｎが６００以上１０００以下であり、かつ数平均分子量Ｍｎ及び重量平均分子量Ｍｗの比率（Ｍｗ／Ｍｎ）が２．５以下の軟化剤とを含む弾性層を有する弾性部材である。【選択図】図１