The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 20, 2017
Filed:
Sep. 15, 2015
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Satoshi Araki, Mishima Shizuoka, JP;
Maiko Yoshida, Mishima Shizyoka, JP;
Taishi Takano, Sunto Shizuoka, JP;
Takashi Urabe, Sunto Shizuoka, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba TEC Kabushiki Kaisha, Tokyo, JP;
Abstract
A method for producing toner includes adding a liquid containing dispersed resin particles into a liquid containing dispersed colorant particles having a volume average particle size of equal to or greater than 6 μm and having a zeta-potential sign opposite to a zeta-potential sign of the resin particles, until a zeta-potential of aggregates of the colorant particle and the resin particles has a sign opposite to the zeta-potential sign of the colorant particles, adjusting the zeta-potential of the aggregates, such that an absolute value of the zeta-potential of the aggregates is smaller than an absolute value of the zeta-potential of the resin particles by more than 10 mv, and adding a liquid containing dispersed resin particles having a zeta-potential sign that is the same as the sign of the adjusted zeta-potential of the aggregates, into a liquid containing the aggregates.