Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
TONER
Document Type and Number:
Japanese Patent JP2002169323
Kind Code:
A
Abstract:

To provide toner which does not cause filming and gray spots even in the case of service for printing over a long term, and a producing method of the toner.

After coloring particles whose spheroidicity is 1 to 1.3 and which are spherical substantially, spherical organic particulates whose average particle size is 0.05 to 1 μm and whose spheroidicity is 1 to 1.3, and spherical silica particulates (A) whose average particle size is 0.03 to 1 μm and whose spheroidicity is 1 to 1.3 are mixed, they are made to pass through a sieve whose sieve opening is ≥53 μm twice, whereby the toner in which the amount of a flocculated body having the size of ≥45 μm is ≤0.005 wt.% based on the weight of the toner is obtained.


Inventors:
SHIGEMORI KAZUNORI
Application Number:
JP2000366078A
Publication Date:
June 14, 2002
Filing Date:
November 30, 2000
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NIPPON ZEON CO
International Classes:
G03G9/08; G03G9/087; (IPC1-7): G03G9/08; G03G9/087