Ricoh Company, Ltd.

Yazaki Corporation

Yousuke Suzuki

Yasuaki Iwamoto

Sayuri Kojima

Tohru Moriya

Kazumasa Shoji

Takahiro Kadota

Ryoko Sone

Yasuaki Tomioka

Atsushi Sasai

Sayaka Yuasa

Kohei Hayasaka

Kazuki Washizu

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%.

Toner and developer

A display device is configured to, when displaying an indicator needle as rotating with a relatively small rotation amount per unit time, display an indicator needle image while rotating the indicator needle image, and, when displaying the indicator needle as rotating with a relatively large rotation amount per unit time, display an indicator-needle motion-blurred image that corresponds to a rotation range per unit time of the indicator needle. An indicator-needle inner end angle formed by two sides of the indicator needle image that form an end thereof that faces a center of the rotation is equal to a minimum motion-blurred inner end angle formed by two sides of the indicator-needle motion-blurred image that has the smallest rotation amount per unit time while the indicator needle is displayed as rotating, the two sides forming an end of the indicator-needle motion-blurred image that faces the center of the rotation.

Display device

A toner, wherein the toner is obtained by washing a toner particle dispersion liquid which is obtained by adding cellulase to a dispersion slurry, and the dispersion slurry is obtained from a dispersion liquid or an emulsion of a toner material-containing oil phase in an aqueous medium, and wherein the dispersion liquid or the emulsion contains a cellulosic dispersion stabilizing agent.

Toner and method for producing toner

A method of manufacturing a toner including manufacturing a coarse toner containing a binder resin and a coloring agent, and screening the coarse toner with a screen device including a top screen having an opening of from 26 to 43 &#x3bc;m and a bottom screen situated below the top screen having an opening of from 54 to 150 &#x3bc;m to screen the coarse toner with the top screen by ultrasonic vibration and mechanical vibration at 50&#xb0; C. or lower, and with the bottom screen by mechanical vibration at 35&#xb0; C. or lower.

Method of manufacturing toner, toner, screening device, and method of recycling toner

Growing community of inventors

Shizuoka, Japan

Yousuke Suzuki