Developer carrying body and its manufacture

Abstract

Abstract PURPOSE:To obtain stable performance for a long term by laminating on a conductive substrate an elastic magnet layer made of a mixture of an elastomer and a magnetic material, and an electrode layer contg. a large number of conductive particles as very small electrodes in a state of each particle electrically insulated from each other. CONSTITUTION:A developer carrying body is formed by laminating on a conductive substrate 4 an elastic magnet layer 5 of a composite magnetized material consisting of a magnetic material and an elastomer, such as a halogenated polymer having no double bond on the main chain, and an electrode layer 6 containing a large number of conductive particles 6a, such as copper particles, as extremely small electrodes, dispersed into a dielectric medium, such as a room-temp. hardenable adhesive, such as acrylic urethane, in a state of each particle electrically insulated from each other and one part of it exposed out of the layer 6 surface. The surface of the electrode layer 6 is polished smoothly, and each particle 6a is held with the surface of the magnet layer 5 in contact with the bottom face of each particle 6a, and so the thickness of the electrode is equal to that of the electrode layer 6. As a result, the step for adjusting magnetic power is saved, and assembling operation is made easy. The obtained developer carrying body has high quality and a desirable edge effect on a rigid latent image bearing body.

Inventors

• 👤 Yasuo Kadomatsu
• 👤 門松　康夫
• 👤 Shoji Tajima
• 👤 田島　彰治
• 👤 Yoshio Miyazaki
• 👤 宮崎　芳男
• 👤 Kimio Yasuse
• 👤 安瀬　君雄
• 👤 Michikazu Sakurai
• 👤 三千一 桜井

Bibliographic Details