Burns, Doane, Swecker & Mathis
Method of developing electrostatic latent image
 This invention relates to a method of developing electrostatic latent images which comprises the steps of; PA1 mixing a developer including toners having a mean particle size of 3 to 20 .mu.m and resin-coated carriers with a large number of pores having a pore size distribution of 0.001 to 3 .mu.m and a mean pore size of 0.1 to 0.5 .mu.m on a surface thereof; PA1 applying said developer onto a developing sleeve made of nonmagnetic material and arranged oppositely to an electrostatic latent image-retaining member with a minute gap therebetween; PA1 forming a magnetic brush of the developer by the magnetic force of a magnet member having plural poles in the circumferential direction thereof, said magnet member fixedly arranged within the developing sleeve; PA1 conveying the developer by a rotation of the developing sleeve to a developing zone where the electrostatic latent image-retaining member is arranged oppositely to the developing sleeve; and PA1 developing electrostatic latent images by the toners which are held on the developing sleeve. 
Minolta Camera Kabushiki Kaisha
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inventional inventional inventional inventional
Hiroshi Yoshihisa Junji Hiroshi Junji Tamotsu
Mizuno Terasaka Machida Murasaki Ohtani Shimizu