| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a developing device having a combined system of two-component development and single-component development, the device suppressing occurrence of image memory while ensuring advantages of high picture quality and high image stability. <P>SOLUTION: The developing device includes: a developer carrier body 21, which is disposed upstream an electrostatic latent image carrier body 10 along a rotation direction thereof and holds a developer comprising toner and a carrier; a toner carrier body 22, which is disposed downstream the electrostatic latent image carrier body 10 along the rotation direction thereof and close to the developer carrier body 21 and holds toner only; a developer carrier body 23, which holds a developer comprising toner and a carrier and is disposed to bring the developer into contact with the toner carrier body 22; and bias voltage applying means 33, 34, 35. <P>COPYRIGHT: (C)2013,JPO&INPIT |
