Title:
ELECTROSTATIC CHARGE IMAGE DEVELOPER AND MULTICOLOR PICTURE FORMING METHOD
Document Type and Number:
Japanese Patent JP3328013
Kind Code:
B2
Abstract:
PURPOSE: To provide an electrostatic charge image developer capable of forming a multicolor picture having excellent quality and color tone over a long period without lowering the picture density due to deficiency of a developing toner or defective transfer or without forming a defective picture, etc., due to the lowering of fluidity.
CONSTITUTION: This electrostatic charge image developer for forming a multicolor picture consists of a toner contg. ≥2 kinds of inorg. fine particles including a large-diameter inorg. fine particle L and a small-diameter inorg. fine particle S and a carrier. The maximum volume distribution diameter DL of the fine particles L is controlled to 50-150nm, the DS of the fine fine particles S to 10-50nm and DL/DS to 1.5-5.0, and the absolute value of (QS/QL) is kept at 0-0.5, wherein QL(QS) is the triboelectric charge quantity between the fine particle L (fine particle S) and the carrier material.
Inventors:
Yoshiaki Kobayashi
Akizo Shirase
Keiko Ogawa
Ryuji Kidani
Akizo Shirase
Keiko Ogawa
Ryuji Kidani
Application Number:
JP19268293A
Publication Date:
September 24, 2002
Filing Date:
July 08, 1993
Export Citation:
Assignee:
Konica Corporation
International Classes:
G03G9/087; G03G9/08; G03G9/09; G03G9/10; G03G13/00; (IPC1-7): G03G9/08; G03G9/09; G03G9/10; G03G13/00
Domestic Patent References:
| JP3203743A | ||||
| JP4204749A | ||||
| JP62174772A | ||||
| JP2126266A | ||||
| JP4348354A | ||||
| JP4204658A | ||||
| JP5119519A | ||||
| JP3110580A | ||||
| JP3100660A |
Attorney, Agent or Firm:
Masahiko Ohi