Title:
TONER AND METHOD FOR IMAGE FORMATION
Document Type and Number:
WIPO Patent Application WO/1999/046645
Kind Code:
A1
Abstract:
A toner characterized by comprising a toner binder comprising a resin (I) selected from among cationically polymerizable thermoplastic resins (A) and radical-polymerizable thermoplastic resins (B), and a colorant and having a glass transition temperature (Tg) before curing of 35 °C or above. Since the resin (I) constituting the toner binder is polymerizable, curing can be conducted at the time of the fixation of an image on a substrate and the number-average molecular weight of the toner binder can be increased after the fixation. Therefore, a toner binder having a low number-average molecular weight may be adopted to conduct the fixation at a low temperature with a low energy. Further, the number-average molecular weight is so low that the viscosity is low and excellent glossiness can be developed, thus providing a high-quality full-color image. The toner binder can be polymerized and cured during the fixation to increase the number-average molecular weight. Therefore, hot offset hardly occurs, and high fixation strength and excellent rubbing resistance can be developed.
Inventors:
SASADA SHINYA (JP)
NAKANISHI HIDEO (JP)
SATAKE MUNEKAZU (JP)
KAMEI NOBUAKI (JP)
IWATA MASAKAZU (JP)
NAKANISHI HIDEO (JP)
SATAKE MUNEKAZU (JP)
KAMEI NOBUAKI (JP)
IWATA MASAKAZU (JP)
Application Number:
PCT/JP1998/001075
Publication Date:
September 16, 1999
Filing Date:
March 11, 1998
Export Citation:
Assignee:
SANYO CHEMICAL IND LTD (JP)
SASADA SHINYA (JP)
NAKANISHI HIDEO (JP)
SATAKE MUNEKAZU (JP)
KAMEI NOBUAKI (JP)
IWATA MASAKAZU (JP)
SASADA SHINYA (JP)
NAKANISHI HIDEO (JP)
SATAKE MUNEKAZU (JP)
KAMEI NOBUAKI (JP)
IWATA MASAKAZU (JP)
International Classes:
G03G9/087; G03G13/20; (IPC1-7): G03G9/087; G03G13/20; G03G15/20
Foreign References:
| JPH1073962A | 1998-03-17 | |||
| JPH0363661A | 1991-03-19 | |||
| JPH0279050A | 1990-03-19 | |||
| JPH0341468A | 1991-02-21 | |||
| JPS57176059A | 1982-10-29 | |||
| JPS6444953A | 1989-02-17 | |||
| JPS63155055A | 1988-06-28 | |||
| JPS57144563A | 1982-09-07 | |||
| JPH03125158A | 1991-05-28 | |||
| JPS60112801A | 1985-06-19 | |||
| JPH04261405A | 1992-09-17 |
Attorney, Agent or Firm:
Yano, Masayuki (9 Takeda Tobadonocho, Fushimi-k, Kyoto-shi Kyoto, JP)
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