Invention Grant
- Patent Title: Method for producing resinous particles
- Patent Title (中): 树脂颗粒的制造方法
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Application No.: US12036658Application Date: 2008-02-25
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Publication No.: US07927777B2Publication Date: 2011-04-19
- 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: JP2007-045691 20070226
- Main IPC: G03G9/08
- IPC: G03G9/08

Abstract:
There is provided a method for producing resinous particles, containing: melting a mixture containing a binder resin and at least one additive having a melting point lower than T1/2 of the binder resin so as to prepare a molten material; atomizing resinous particles from the molten material in an atmosphere having a temperature higher than Tg of the binder resin and lower than 3 times of T1/2 of the binder resin; retaining the resinous particles in an atmosphere having a temperature higher than Tg of the binder resin, and lower than 1.5 times of T1/2 of the binder resin for 1 s to 15 s; and cooling and solidifying the resinous particles. There is also provided a method for producing resinous particles containing: melting the mixture so as to prepare a molten material; increasing a specific surface of the molten material in an atmosphere having a temperature higher than Tg of the binder resin, and lower than 3 times of T1/2 of the binder resin, so as to form a precursor; retaining the precursor in an atmosphere having a temperature higher than Tg of the binder resin, and lower than 1.5 times of T1/2 of the binder resin for 1 ms to 10 ms; cooling and solidifying the precursor; and atomizing resinous particles from the precursor.
Public/Granted literature
- US20080305421A1 METHOD FOR PRODUCING RESINOUS PARTICLES Public/Granted day:2008-12-11
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