Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1990-11-09
1993-01-19
Martin, Roland
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430109, 430110, 430111, 430124, G03G 9083, G03G 1320, G03G 9087, G03G 9097
Patent
active
051806495
ABSTRACT:
A toner for developing electrostatic images is constituted from a binder resin, and a metal salt or a metal complex. Through the various interaction between the components, the toner is provided with unique viscoelastic properties including: a dynamic modulus G'.sub.120-200 at 120.degree.-200.degree. C. of 2.times.10.sup.3 or higher to below 5.times.10.sup.5 [dyne/cm.sup.2 ] as measured in the frequency range of 1.times.10.sup.-2 -1 (Hz); a loss modulus G".sub.120-200 at 120.degree.-200.degree. C. of 2.times.10.sup.3 or higher to below 5.times.10.sup.5 [dyne/cm.sup.2 ] as measured in the frequency range of 1.times.10.sup.-2 -1 (Hz); a dynamic modulus G'.sub.200 at 200.degree. C. and a frequency f satisfying an approximated linear relationship according to the least squares method of: logG'.sub.200 =a.multidot.log.multidot.f+log b, wherein a denotes a positive number of 0.25 or smaller and b denotes a constant; and a ratio (G'.sub.200)/(G'.sub.120) of below 0.25 wherein (G'.sub.200) denotes a dynamic modulus at 200.degree. C. and (G'.sub.120) denotes a dynamic modulus at 120.degree. C. respectively at a frequency of 1 (Hz).
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Kukimoto Tsutomu
Kuwashima Tetsuhito
Takiguchi Tsuyoshi
Tomiyama Koichi
Yusa Hiroshi
Canon Kabushiki Kaisha
Martin Roland
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