Title:
MAGNETIC CARRIER FOR ELECTROSTATIC LATENT IMAGE DEVELOPER, ELECTROSTATIC LATENT IMAGE DEVELOPER AND PICTURE FORMING METHOD
Document Type and Number:
Japanese Patent JP3219926
Kind Code:
B2
Abstract:
PURPOSE: To form a picture with low surface charge potential and developing bias voltage by incorporating a carrier grain having a specified diameter into the aggregated carrier grain.
CONSTITUTION: A small-diameter carrier grain is incorporated into the carrier grain constituting a magnetic carrier to conduct development under low charge and low electric field conditions. Consequently, the magnetic carrier as the aggregate of carrier grains contains ≥15wt.%, preferably 15-90wt.%, of the carrier grains having ≤35μm diameter. Meanwhile, the magnetic carrier preferably contains 15-50wt.% of the carrier grains having ≤25μm diameter or more preferably contains 15-30wt.% of the carrier grains having ≤20μm diameter. The average diameter of the carrier grains is appropriately controlled to 20-50μm or preferably controlled to 25-40μm.
Inventors:
Yasuo Nishiguchi
Susumu Kikuchi
Yoshio Ozawa
Kotobuki
Susumu Kikuchi
Yoshio Ozawa
Kotobuki
Application Number:
JP35467493A
Publication Date:
October 15, 2001
Filing Date:
December 28, 1993
Export Citation:
Assignee:
Kyocera Corporation
International Classes:
G03G15/02; G03G5/06; G03G5/082; G03G5/10; G03G9/08; G03G9/10; G03G9/107; G03G13/08; G03G15/09; (IPC1-7): G03G9/10; G03G9/08; G03G15/02; G03G15/09
Domestic Patent References:
| JP62217254A | ||||
| JP3164752A | ||||
| JP62294259A | ||||
| JP62175766A | ||||
| JP4355769A |
Attorney, Agent or Firm:
Kihei Watanabe