TONER FOR DEVELOPING ELECTROSTATIC LATENT IMAGE, AND IMAGING DEVICE USING THE SAME

Title:

TONER FOR DEVELOPING ELECTROSTATIC LATENT IMAGE, AND IMAGING DEVICE USING THE SAME

Document Type and Number:

WIPO Patent Application WO/2007/105737

Kind Code:

A1

Abstract:

Disclosed is a toner for use in the development of an electrostatic latent image, which shows excellent anti-blocking properties under high-temperature/high-humidity conditions and an excellent low-temperature fixability and comprises a polyester resin toner binder. The toner comprises at least one amorphous polyester resin (A) and a crystalline polyester (B), wherein the polyester resin is formed in the presence of at least one titanium-containing catalyst (a) represented by the general formula (I) or (II): Ti(-X)m(-OH)n ··· (I); and O=Ti(-X)p(-OR)q ··· (II) wherein X represents a residue formed by removing H from one OH group in a (poly)alkanolamine having 2 to 12 carbon atoms; R represents H or an alkyl group having 1 to 8 carbon atoms which may contain 1 to 3 ether bonds; m is 1 to 4 and n is 0 to 3, provided that the sum total of m and n is 4; and p is 1 to 2 and q is 0 to 1, provided that the sum total of p and q is 2 (m, n, p and q independently represent an integer).

Inventors:

TOMITA MASAMI (JP)
UMEHARA KEN (JP)

Application Number:

PCT/JP2007/055002

Publication Date:

September 20, 2007

Filing Date:

March 13, 2007

Export Citation:

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Assignee:

RICOH KK (JP)
TOMITA MASAMI (JP)
UMEHARA KEN (JP)

International Classes:

G03G9/087; C08J3/12; G03G9/08

Foreign References:

JPS53128648A	1978-11-09
JP2004151246A	2004-05-27
JP2004177607A	2004-06-24
JP2005091883A	2005-04-07
JP2005115352A	2005-04-28
JP2005314686A	2005-11-10
JPS61120161A	1986-06-07
JPH10228130A	1998-08-25
JP2005099082A	2005-04-14
JP2005301261A	2005-10-27
JPH04362956A	1992-12-15
JP2004302458A	2004-10-28
JP2003057875A	2003-02-28
JP2004151709A	2004-05-27
JP2005164800A	2005-06-23

Other References: