Invention Grant
- Patent Title: Semispherical toner having plural dents
- Patent Title (中): 具有多个凹痕的半球形调色剂
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Application No.: US11776693Application Date: 2007-07-12
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Publication No.: US07713671B2Publication Date: 2010-05-11
- Inventor: Yukio Tabata
- Applicant: Yukio Tabata
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company Limited
- Current Assignee: Ricoh Company Limited
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2006-192216 20060712; JP2007-058150 20070308
- Main IPC: G03G9/08
- IPC: G03G9/08
Abstract:
A toner, which is semispherical and has plural dents on the surface, including a binder resin; and a pigment, wherein a circle circumscribing a circular profile of the toner provides an average envelopability (AE) of 10 to 10,000 particles thereof of from 74 to 84%, which is measured by the following formula: AE(%)=(AC−AD)/AC×100 wherein AC is an area of the circle and AD is a total sum of areas of the dents.
Public/Granted literature
- US20080014523A1 TONER Public/Granted day:2008-01-17
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