The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 02, 2008
Filed:
Apr. 13, 2007
Hiroshi Yamashita, Shizuoka, JP;
Chiaki Tanaka, Shizuoka, JP;
Tsunemi Sugiyama, Shizuoka, JP;
Hiroshi Yamada, Shizuoka, JP;
Kazuhito Watanabe, Kanagawa, JP;
Shigeru Emoto, Shizuoka, JP;
Masami Tomita, Shizuoka, JP;
Hiroshi Yamashita, Shizuoka, JP;
Chiaki Tanaka, Shizuoka, JP;
Tsunemi Sugiyama, Shizuoka, JP;
Hiroshi Yamada, Shizuoka, JP;
Kazuhito Watanabe, Kanagawa, JP;
Shigeru Emoto, Shizuoka, JP;
Masami Tomita, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A dry toner contains fine particles having average sphericity of 0.93 to 0.99, a content of the fine particles having a particle diameter of 2 μm or less in the dry toner is 20% by number or less. A method for manufacturing a dry toner includes a process for dispersing in an aqueous medium containing water and a water-soluble organic solvent, a toner composition contained in an organic solvent by using fine solid dispersing agent; and a process for contracting volume of the dispersed toner composition. Further, the image forming apparatus having a photoconductor; a charger for charging the photoconductor; a light irradiator for irradiating the electrophotographic photoconductor to form a latent electrostatic image; a developer for developing the latent electrostatic image to form a developed image; and a transfer for transferring the developed image to a recording material, and the developer contains the dry toner abovementioned.