US Patent 7608374 Toner and developer using the toner
Patent 7608374 was granted and assigned to RICOH COMPANY,LTD. on October, 2009 by the United States Patent and Trademark Office.
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Patent Inventor Names
Masami Tomita0
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Patent abstract
A toner including a binder resin, and a release agent, wherein the following relationships are satisfied:2 μm≦D4≦4 μm (a)0.05 μm≦Dw≦0.3 μm (b)Dw≦0.075×D4 (c)F≦−40×Dw+19 (d)F≦20×Dw+5 (e)wherein D4 is a weight-average particle diameter of the toner, Dw is an average dispersion diameter of the release agent and F is a pulverizability index of the toner.
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US Patent 07608374 Toner and developer using the toner US Patent 7608374 Toner and developer using the toner
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Patent Number
07608374
Patent Number
7608374
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US Patent 07608374 Toner and developer using the toner
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Is a
Current assignee
Patent jurisdiction
Patent number
07608374
Date of patent
October 27, 2009
Patent application number
11622477
Date Filed
January 12, 2007
Patent primary examiner
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