RUBBER COMPOSITION, RUBBER ROLLER, AND IMAGE FORMING APPARATUS

• Main Authors: TANIO YUSUKE, OSAKA KEISUKE
• Format: Patent
• Language: Chinese; English
• Published: 30.07.2019
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; CINEMATOGRAPHY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; GENERAL PROCESSES OF COMPOUNDING; HOLOGRAPHY; MAGNETOGRAPHY; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PHOTOGRAPHY; PHYSICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

The invention provides a rubber composition, a rubber roller, and an image forming apparatus. The rubber composition capable of forming a foam such as a roller main body which has a low rubber hardness and is soft in a state in which an average cell diameter thereof is small is provided. The rubber composition includes NBR whose Mooney viscosity is 15 to 50 having a proportion being 10 parts by mass or more in 100 parts by mass of the total amount of rubber, epichlorohydrin rubber whose Mooney viscosity is 5 to 35 having a proportion being 10 parts by mass or more in 100 parts by mass of the total amount of rubber, and 10 parts by mass or less of carbon black and 7 parts by mass or less of a foaming agent with respect to 100 parts by mass of the total amount of rubber, and has a Mooney viscosity of 35 or less. 本发明提供一种橡胶组合物、橡胶辊、以及包含所述橡胶辊的图像形成装置，所述橡胶组合物可形成平均泡孔径小、并且橡胶硬度低且柔软的辊本体等的发泡体，所述橡胶辊包括包含使所述橡胶组合物发泡、交联而成的发泡体的筒状的辊本体。橡胶组合物在橡胶的总量100质量份中分别以10质量份以上的比例包含穆尼粘度为15～50的NBR、以及5～35的表氯醇橡胶，且包含相对于橡胶的总量100质量份而为10质量份以下的碳黑与7质量份