Charge control agent and toner using same

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United States of America Patent

PATENT NO 9835965
SERIAL NO

15024743

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Importance

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Abstract

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To provide a charge control agent and a toner having a superior charging characteristic. A charge control agent containing a bis-phthalimide derivative represented by formula. Thus, it is possible to provide a safe, negative chargeability charge control agent with which the rate of rise of the charge can be increased, and which has a high charging amount and poses no problem in terms of waste regulations. Furthermore, it is possible to provide a negatively chargeable toner (and particularly, a negatively chargeable polymerized toner) for electrostatic image development which uses this charging control agent and has a superior charging characteristic.

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Patent Owner(s)

Patent OwnerAddress
HODOGAYA CHEMICAL CO LTD1-9-2 HIGASHI-SHIMBASHI MINATO-KU TOKYO 1050021

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Asakai, Masafumi Tokyo, JP 6 5
Ito, Masami Tokyo, JP 74 680
Kimura, Ikuo Ibaraki, JP 25 351
Okubo, Masaki Ibaraki, JP 18 64
Tojo, Masaya Ibaraki, JP 9 6
Tsuji, Motonori Tokyo, JP 6 11
Yamamoto, Takeshi Tokyo, JP 702 5468
Yoshida, Tetsuya Tokyo, JP 156 762

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