Ricoh Company, Ltd.

Hiyori Fujino

Keisuke Tada

Shoki Matsuda

Fumihiko Chimoto

Ayumi Satoh

Daisuke Misawa

Takashi Okano

A magenta toner is provided. The magenta toner comprises toner particles each comprising a binder resin and a colorant. From 1.0% to 25.0% by number of the toner particles have a CH rate of 25.0% or more in absolute value. The CH rate is calculated from the following formula (1):rate(%)=[()/]×100  Formula (1)where, in a Raman spectrum of each toner particle, Irepresents an integrated intensity within a wavenumber region of from 2,750 to 3,250 cmwhen an intensity at a wavenumber λ within a wavenumber region of from 1,200 to 3,250 cmis s normalized to 1, where a total intensity of all the toner particles is maximum at the wavenumber λ; and Irepresents an average of the I.

Magenta toner, developer, toner accommodating unit, image forming apparatus, and image forming method

A cyan toner is provided. The cyan toner comprises toner particles each comprising a binder resin and a colorant. From 1.0% to 20.0% by number of the toner particles have a CH rate of 7.0% or more in absolute value. The CH rate is calculated from the following formula (1):CH rate (%)=[()/]&#xd7;100&#x2003;&#x2003;Formula (1)where, in a Raman spectrum of each toner particle, Irepresents an integrated intensity within a wavenumber region of from 2,600 to 3,180 cmwhen an intensity at a wavenumber &#x3bb; within a wavenumber region of from 2,600 to 2,800 cmis s normalized to 1, where a total intensity of all the toner particles is maximum at the wavenumber &#x3bb;; and Irepresents an average of the I.

Cyan toner, developer, toner accommodating unit, image forming apparatus, and image forming method

A yellow toner is provided. The yellow toner comprises toner particles each comprising a binder resin and a colorant, and 1.0% to 15.0% by number of the toner particles have a CH rate of 25.0% or more in absolute value. Here, the CH rate is calculated from the following formula (1):rate (%)=[()/]&#xd7;100&#x2003;&#x2003;Formula (1)where Irepresents an integrated intensity within a wavenumber region of from 2,750 to 3,250 cmwhen an intensity at a wavenumber &#x3bb; within a wavenumber region of from 950 to 3,250 cmis normalized to 1 in a Raman spectrum of each toner particle; and Irepresents an average of the I.

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Shizuoka, Japan

Hiyori Fujino