Image forming toner, and image forming method and image forming apparatus using the toner
AssigneeRicoh Company, Ltd.
InventorsHiroto Higuchi, Fumihiro Sasaki, Yasuaki Iwamoto, Hiroaki Matsuda, Hiroshi Nakai, Bing Shu, Maiko Kondo
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Abstract
An image forming toner is provided, including at least: a binder resin; a colorant; and a release agent, wherein a volume-average particle diameter of the toner measured by a Coulter counter is from 5 to 8 μm; the content of the toner having a volume-average particle diameter of not greater than 5 μm is 60 to 75% by number; and the content of the toner having a number-basis circle-equivalent particle diameter of from 0.6 to 3 μm measured by a flow-type particle image analyzer is not greater than 25%.
Claims20
An image forming toner having low temperature fixability and thin line reproducibility comprising:
- a binder resin;
- a colorant;
- and
- a release agent,
- wherein the toner has a volume-average particle diameter, as measured by a Coulter counter, of from 5 to 8 μm;
- the toner has a content of particles having a volume-average particle diameter of not greater than 5 μm of from 60 to 75% by number;
- and the toner has a content of particles having a number-basis circle-equivalent particle diameter of from 0.6 to 3 μm, as measured by a flow-type particle image analyzer, or not greater than 25%.
Dependencies are inferred from the claim text.