Global Patent Index - EP 0656129 A1

EP 0656129 A1 19950607 - ELECTROSTATICALLY AND/OR MAGNETICALLY ATTRACTABLE TONER POWDER.

Title (en)

ELECTROSTATICALLY AND/OR MAGNETICALLY ATTRACTABLE TONER POWDER.

Title (de)

ELEKTROSTATISCH UND/ODER MAGNETISCH ANZIEHBARES TONERPULVER.

Title (fr)

POUDRE TONER ATTIRABLE DE MANIERE ELECTROSTATIQUE ET/OU MAGNETIQUE.

Publication

EP 0656129 A1 19950607 (EN)

Application

EP 94918827 A 19940530

Priority

  • EP 94918827 A 19940530
  • EP 9401772 W 19940530
  • EP 93201815 A 19930622

Abstract (en)

[origin: WO9500883A1] A dry toner powder of which the powder particles are electrostatically or magnetically attractable and suitable for use in the satin-look development of electrostatic charge images or magnetic patterns and wherein the composition of said powder particles includes at least one substantially colourless transparent thermoplastic (fusible) resin P and at least one substantially colourless compound Q, characterized in that said at least one resin P and said at least one compound Q when after been mixed in molten state followed by solidification form a light-scattering composition that under the measurement conditions of the test R has an optical absorption value of more than 0.10 but not more than 1.0, said resin(s) P and compound(s) Q being present in said toner in a weight ratio range P/Q from 5:1 to 1:5, and the weight ratio of P + Q with respect to the total weight of the toner is equal to or larger than 25:100.

IPC 1-7

G03G 9/00; G03G 9/087; G03G 9/097

IPC 8 full level

G03G 9/08 (2006.01); G03G 9/00 (2006.01); G03G 9/087 (2006.01); G03G 9/09 (2006.01); G03G 9/097 (2006.01); G03G 13/20 (2006.01)

CPC (source: EP)

G03G 9/08711 (2013.01); G03G 9/08755 (2013.01); G03G 9/08797 (2013.01); G03G 9/09 (2013.01); G03G 9/0926 (2013.01); G03G 9/09733 (2013.01); G03G 9/09775 (2013.01); G03G 13/20 (2013.01)

Citation (search report)

See references of WO 9500883A1

Citation (examination)

  • PATENT ABSTRACTS OF JAPAN vol. 9, no. 16 (P-329) (1739) 23 January 1985 & JP,A,59 164 560
  • DATABASE WPI Section Ch, Week 8615, Derwent Publications Ltd., London, GB; Class A89, AN 86-099705 & SU,A,1 180 830

Designated contracting state (EPC)

BE CH DE FR GB IT LI NL SE

DOCDB simple family (publication)

WO 9500883 A1 19950105; DE 69400072 D1 19960321; DE 69400072 T2 19960912; EP 0656129 A1 19950607; EP 0656129 B1 19960207; JP H08500913 A 19960130

DOCDB simple family (application)

EP 9401772 W 19940530; DE 69400072 T 19940530; EP 94918827 A 19940530; JP 50025495 A 19940530