Title:
MAGNETIC CORE MATERIAL FOR ELECTROGRAPHIC DEVELOPER, CARRIER FOR ELECTROGRAPHIC DEVELOPER, AND DEVELOPER
Document Type and Number:
WIPO Patent Application WO/2018/128112
Kind Code:
A1
Abstract:
Provided is a magnetic core material for an electrographic developer, said material having excellent charging characteristics and strength and making it possible to obtain a good image without defects. Also provided are a carrier for an electrographic developer and a developer containing said carrier. A magnetic core material for an electrographic developer, wherein the content of a sulfur component is 50-700 ppm in terms of sulfate ions, and the BET specific surface area is 0.06-0.25 m2/g.
Inventors:
SAWAMOTO HIROKI (JP)
UEMURA TETSUYA (JP)
UEMURA TETSUYA (JP)
Application Number:
PCT/JP2017/046425
Publication Date:
July 12, 2018
Filing Date:
December 25, 2017
Export Citation:
Assignee:
POWDERTECH CO LTD (JP)
International Classes:
G03G9/107; G03G9/113
Foreign References:
| JP2011227452A | 2011-11-10 | |||
| JP2009234839A | 2009-10-15 | |||
| JP2012181398A | 2012-09-20 | |||
| JP2016025288A | 2016-02-08 | |||
| JP2010055014A | 2010-03-11 | |||
| US6143456A | 2000-11-07 | |||
| JPH0822150A | 1996-01-23 | |||
| JP2006017828A | 2006-01-19 | |||
| JP2011180296A | 2011-09-15 | |||
| JP2016025288A | 2016-02-08 | |||
| JP2017000285A | 2017-01-05 |
Other References:
See also references of EP 3567430A4
Attorney, Agent or Firm:
KOH-EI PATENT FIRM, P.C. (JP)
Download PDF: