Invention Grant
US07662534B2 Apparatus for producing toner precursor, and method for the same, fibrous toner precursor, apparatus for producing toner, and method for producing electrophotographic toner and fine resin particles
有权
用于生产调色剂前体的装置及其方法,纤维调色剂前体,用于制备调色剂的设备,以及用于生产电子照相调色剂和精细树脂颗粒的方法
- Patent Title: Apparatus for producing toner precursor, and method for the same, fibrous toner precursor, apparatus for producing toner, and method for producing electrophotographic toner and fine resin particles
- Patent Title (中): 用于生产调色剂前体的装置及其方法,纤维调色剂前体,用于制备调色剂的设备,以及用于生产电子照相调色剂和精细树脂颗粒的方法
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Application No.: US11852611Application Date: 2007-09-10
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Publication No.: US07662534B2Publication Date: 2010-02-16
- Inventor: Naotoshi Kinoshita , Tetsuya Tanaka , Masahiro Kawamoto
- Applicant: Naotoshi Kinoshita , Tetsuya Tanaka , Masahiro Kawamoto
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company Ltd.
- Current Assignee: Ricoh Company Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2006-246014 20060911; JP2006-301448 20061107; JP2007-214066 20070820; JP2007-216505 20070822
- Main IPC: G03G9/13
- IPC: G03G9/13 ; B29C47/12

Abstract:
To provide a method including processing electrophotographic toner constituent material to a fibrous fine precursor and pulverizing and cutting it to obtain a uniform fibrous toner with energy efficiency in an apparatus for producing electrophotographic toner including a nozzle unit containing a nozzle having a flow path tapering toward the nozzle hole at 2° to 20° and a gas nozzle unit containing a gas nozzle and gas flow path tapering toward the nozzle hole at 15° to 33° relative to a direction of a nozzle axis, wherein the toner constituent material containing a raw material A containing a resin and pigment, and a raw material B containing one of a low melting point resin, wax and organic solvent, is extruded from the nozzle at 150° C. to 320° C., and drawn by gas flow from the gas nozzles so as to be a fibrous fluid while controlling the flow rate.
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