Toner, developer, image forming apparatus, and process cartridge

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United States of America Patent

PATENT NO 9785075
SERIAL NO

14433770

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Abstract

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Provided is a toner containing a binder resin. The binder resin contains a crystalline resin. The toner has a maximum endothermic peak temperature (P1) of from 50° C. to 80° C. and a total endothermic amount (Q) of from 35 J/g to 90 J/g at a first temperature elevation of differential scanning calorimetry. A ratio (Qp/Q) of a total endothermic amount (Qp) of the toner in a temperature range of from 20° C. to the maximum endothermic peak temperature (P1) to the total endothermic amount (Q) of the toner is from 0.65 to 0.83.

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Patent Owner(s)

Patent OwnerAddress
RICOH COMPANY LTDTOKYO 143-8555

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chiba, Susumu Shizuoka, JP 21 229
Masuda, Minoru Shizuoka, JP 103 1255
Nakayama, Shinya Shizuoka, JP 115 1814
Sawada, Toyoshi Kanagawa, JP 71 975
Yamamoto, Atsushi Osaka, JP 486 6100
Yamashita, Hiroshi Shizuoka, JP 467 5965

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