Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
Toner, development agent, and image forming apparatus using the same
A toner includes a binder resin, a coloring agent, and a releasing agent containing two or more kinds of alkyl monoester compounds having a different number of carbon atoms in a range of from 30 to 50 carbon atoms. The toner has a crystallinity of 10% or more as measured by x-ray diffraction and/or the binder resin is a crystalline resin in an amount of 50% by weight or more of the binder resin. The two or more kinds of alkyl monoester compounds include a component A accounting for the largest amount ranging from 30% by weight to less than 50% by weight of the releasing agent and a component B accounting for the second largest amount ranging from 10% by weight to less than 50% by weight of the releasing agent.
Ricoh Company, Ltd.
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Atsushi Hiroshi Masahide Shinya Shingo Yukiko
Yamamoto Yamashita Yamada Nakayama Sakashita Nakajima