Ricoh Company, Ltd.

Kazuki Washizu

Tohru Moriya

Yousuke Suzuki

Kohei Hayasaka

Atsushi Sasai

A toner comprising a binder resin and a release agent is provided. When the toner is subjected to a FTIR-ATR mapping within a measurement range in a 50 &#x3bc;m square, divided in 1,024 pixels each in a 1.56 &#x3bc;m square, an average value of an intensity ratio of an absorption spectrum peak at a wavenumber of 2850 cmto an absorption spectrum peak at a wavenumber of 828 cmin each of the pixels is from 0.10 to 0.19, and a proportion of pixels in which the intensity ratio is 0.20 or higher to all the pixels is from 5% to 10%.

Growing community of inventors

Shizuoka, Japan

Kazuki Washizu