Toner, process cartridge and image forming apparatus
OwnerMitsuyo MATSUMOTO, Chiyoshi Nozaki +6inventors
InventorsMitsuyo MATSUMOTO, Chiyoshi Nozaki, Takuya Kadota, Katsunori Kurose, Hiroyuki Murakami, Tsuyoshi Nozaki, Atsushi Yamamoto, Yoshimichi Ishikawa
Life of this patent
Estimating the term…
Abstract
A toner including a coloring material, a binder resin and an external additive, wherein a tensile strength A of a toner agglomeration body compressed at a compression force of 1.1 kgf/cm2 is from 10 to 25 gf/cm2 and a tensile strength B of a toner agglomeration body compressed at a compression force of 8 kgf/cm2 is from 25 to 45 gf/cm2 and the tensile strength A and the tensile strength B satisfy the following relationship: (Tensile strength B)−(Tensile strength A)≦25 gf/m2.
Claims14
A toner comprising:
- a coloring material;
- a binder resin;
- and
- an external additive,
- wherein a tensile strength A of a toner agglomeration body compressed at a compression force of 1.1 kgf/cm2 is from 10 to 25 gf/cm2 and a tensile strength B of a toner agglomeration body compressed at a compression force of 8 kgf/cm2 is from 25 to 45 gf/cm2 and the tensile strength A and the tensile strength B satisfy the following relationship:
- (Tensile strength B)−(Tensile strength A)≦25 gf/m2.
Dependencies are inferred from the claim text.