Global patent index - EP 0974870 A1

EP 0974870 A1 2000-01-26 - Toner for amorphous silicon photoreceptor and developer including the same

Title (en)

Toner for amorphous silicon photoreceptor and developer including the same

Title (de)

Toner für amorphe Siliziumphotorezeptoren und diese enthaltende Entwickler

Title (fr)

Révélateur pour photorécepteurs à base de silicium et agent de développement le comprenant

Publication

EP 0974870 A1 (EN)

Application

EP 99114087 A

Priority

JP 20562498 A

Abstract (en)

Toner and developer including the toner is operable to prevent blurring from occurring in an image forming system including an amorphous silicon photoreceptor, and to assure high image quality and image free from fog even under high humidity environment. Coloring particles each comprise a main particle including a polyester resin having an acid value of not less than 20 as a binder resin, and a hydrophobic silica whose primary particle has a mean particle size of from 7 to 20 nm, and magnetic powder whose primary particle has a mean particle size of from 100 to 1000 nm, adhered to the surface of main particle.

IPC 1-7 (main, further and additional classification)

G03G 9/087; G03G 9/08; G03G 9/083; G03G 9/097

IPC 8 full level (invention and additional information)

G03G 9/08 (2006.01); G03G 9/083 (2006.01); G03G 9/087 (2006.01); G03G 9/097 (2006.01)

CPC (invention and additional information)

G03G 9/083 (2013.01); G03G 9/0835 (2013.01); G03G 9/08755 (2013.01); G03G 9/09708 (2013.01); G03G 9/09716 (2013.01)

Citation (search report)

Designated contracting state (EPC)

CH DE GB LI

EPO simple patent family

EP 0974870 A1 20000126; JP 2000039739 A 20000208

INPADOC legal status

2002-08-14 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020201

2000-10-11 [AKX] PAYMENT OF DESIGNATION FEES

- Free Format Text: CH DE GB LI

2000-07-26 [RAP1] TRANSFER OF RIGHTS OF AN EP APPLICATION

- Owner name: KYOCERA MITA CORPORATION

2000-04-19 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000224

2000-01-26 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): CH DE GB LI

2000-01-26 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free Format Text: AL;LT;LV;MK;RO;SI