Titanium dioxide aggregates process for producing same and electrophotographic photosensitive material containing same
Patent 5173386 Issued on December 22, 1992. Estimated Expiration Date: 
December 28, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 28, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2480869 3640745 3837850 3862297 Doped TiO2 electrophotographic photosensitive materials Multicolor electrophotographic process using TiO2 Patent #: 4525441 InventorAssigneeApplicationNo. 458349 filed on 12/28/1989US Classes:430/84, Inorganic radiation conductive composition106/436, Titanium compound containing (Ti)106/437, Oxidation of titanium tetrahalide or product106/438, Zirconium compound containing (Zr)106/449, Alkali or alkaline earth metal containing423/610, Titanium dioxide423/612, Titanium tetrahalide423/615, Utilizing titanium sulfate as reactant423/616, And utilizing acid430/95Sensitized or dopedExaminersPrimary: Martin, RolandAttorney, Agent or FirmForeign Patent References
International ClassesG03G 005/08C01G 023/047 C09C 001/36 Foreign Application Priority Data1988-12-28 JPAbstractThe present invention provides novel titanium dioxide aggregates especially suitable for an electrophotographic photosensitive material. This titanium dioxide aggregates comprise sintered aggregates of fine primary particles and have a rutile type crystal structure and an oil absorption of 35-65. This titanium dioxide aggregates which are treated with a mineral acid is also provided. There is also provided an electrophotograpic photosensitive material which contains such titanium dioxide in a photosensitive layer.Other References
Field of SearchInorganic radiation conductive compositionSensitized or doped Titanium dioxide Titanium tetrahalide Utilizing titanium sulfate as reactant And utilizing acid Titanium compound containing (Ti) Oxidation of titanium tetrahalide or product Zirconium compound containing (Zr) Alkali or alkaline earth metal containing |
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