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US 6,074,795 AGranted
Toner for developing electrostatic latent image
AssigneeRicoh Company, Ltd.
InventorsYohichiroh Watanabe, Keiko Shiraishi, Noboru Kuroda, Kohsuke Suzuki
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Abstract
A toner for developing electrostatic latent images which includes at least a binder resin, a colorant and a releasing agent, wherein the releasing agent includes a particulate material capable of absorbing the releasing agent. The particulate material preferably has an absorption rate not less than about 10% by weight in a combination with the releasing agent.
Claims20
A toner for developing an electrostatic latent image which comprises:
- a binder resin, a colorant and a releasing agent, wherein the releasing agent comprises a particulate material that absorbs at least some of the releasing agent.
A method for manufacturing a toner comprising the steps of:
- mixing a releasing agent and a particulate material capable of absorbing the releasing agent to prepare a first mixture;
- heating the first mixture such that the releasing agent melts;
- kneading the first mixture containing the melted releasing agent;
- cooling the first mixture;
- combining the mixture with at least a binder resin and a colorant to prepare a second mixture;
- heating the second mixture such that the binder resin softens;
- kneading the second mixture containing the softened binder resin;
- cooling the second mixture;
- and
- pulverizing the second mixture.
7 more elements
Dependencies are inferred from the claim text.