US Patent 7563554 Electrophotographic toner

Patent 7563554 was granted and assigned to Konica Minolta on July, 2009 by the United States Patent and Trademark Office.

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Patent Inventor Names

Kenji Hayashi0

Mikio Koyama0

Takamasa Ueda0

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Patent abstract

A method of preparing an electrophotographic toner is disclosed, comprising subjecting polyester resin particles and colored microparticles to coagulation and fusion in an aqueous medium to form toner particles, wherein the colored microparticles comprise a colorant and a crosslinked polyester resin or a nitrogen-containing polycondensate resin.

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Official Website

https://pdfpiw.uspto.gov/.piw?Docid=07563554

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edited on 20 May, 2023