| (19) |
 |
|
(11) |
EP 0 801 333 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
07.01.1998 Bulletin 1998/02 |
| (43) |
Date of publication A2: |
|
15.10.1997 Bulletin 1997/42 |
| (22) |
Date of filing: 20.03.1997 |
|
|
| (84) |
Designated Contracting States: |
|
DE FR GB |
| (30) |
Priority: |
09.04.1996 EP 96200977
|
| (71) |
Applicant: AGFA-GEVAERT
naamloze vennootschap |
|
2640 Mortsel (BE) |
|
| (72) |
Inventors: |
|
- Tavernier, Serge
2640 Mortsel (BE)
- Ghekiere, Jean-Pierre
2640 Mortsel (BE)
- Op de Beeck, Werner
2640 Mortsel (BE)
- Stuer, Theofiel
2640 Mortsel (BE)
|
|
| |
|
(57) A toner composition is provided comprising toner particles having a BET surface between
0.4 and 1.5 m
2/g and a melt viscosity between 150 and 2,000 Pa.s at 120 °C and n different types
of inorganic hydrophobic particles wherein the amount of inorganic particles is chosen
such that the total BET surface of the inorganic particles relates to the BET surface
of the toner particles in a specific way. In the composition sum of the BET surface
of each of the types of inorganic particles multiplied with their respective weight
percentage relative to the toner amount relates to the BET surface of the toner particles
in a ratio BR, such that 150 ≤ BR ≤ 375. The use of the toner composition in an electrostatographic
method wherein the images are fixed in a non-contact fusing step is beneficial for
good gloss control.