Invention Grant
- Patent Title: Toner, method for manufacturing the same, and image forming method
- Patent Title (中): 调色剂,其制造方法和图像形成方法
-
Application No.: US12019112Application Date: 2008-01-24
-
Publication No.: US07989134B2Publication Date: 2011-08-02
- Inventor: Toshihiko Usami , Masashi Miyakawa
- Applicant: Toshihiko Usami , Masashi Miyakawa
- 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: JP2007-014623 20070125
- Main IPC: G03G5/00
- IPC: G03G5/00

Abstract:
To provide a toner manufacturing method including: dissolving or dispersing a toner material into an organic solvent to prepare a toner solution, the toner material containing at least an active hydrogen group-containing compound, polymer reactive with the active hydrogen group-containing compound, binder resin, releasing agent and coloring agent; emulsifying or dispersing the toner solution into an aqueous medium to prepare an emulsified dispersion; reacting the active hydrogen group-containing compound with the polymer reactive with the active hydrogen group-containing compound in the aqueous medium produce an adhesive base material in the form of particle; and removing the organic solvent, wherein time X (hour) from a point where the organic solvent starts to be removed to a point where the concentration of the organic solvent reaches less than 12% by mass and temperature T (° C.) of the emulsified dispersion at the time X satisfy the relationship 5{exp(−0.2X)+1}≦T≦50X−0.2.
Public/Granted literature
- US20080182186A1 TONER, METHOD FOR MANUFACTURING THE SAME, AND IMAGE FORMING METHOD Public/Granted day:2008-07-31
Information query