Ricoh Company, Ltd.

Miyuki Hirata

Junichi Watanabe

Mio Akima

Rie Kobayashi

Keisuke Tada

Kenichi Uehara

Daisuke Misawa

Junya Koeda

Provided is a thermal transfer medium for a testing device, the thermal transfer medium including a support, a solid-phase reagent layer provided over the support and containing a reagent over a surface of the solid-phase reagent layer; and a protective layer provided over the solid-phase reagent layer in a manner to cover the reagent, wherein an average thickness of the protective layer is 0.5 &#x3bc;m or greater but 30 &#x3bc;m or less.

Thermal transfer medium for testing device, testing device and method for producing same, and testing kit

A method of manufacturing toner including preparing a first liquid by dissolving or dispersing toner components including one or both of a binder resin and a precursor thereof in an organic solvent; preparing a second liquid by dispersing the first liquid in a first aqueous medium including a dispersant; producing primary particles by removing the organic solvent from the second liquid; washing the primary particles; preparing a third liquid by dispersing the washed primary particles in a second aqueous medium and heating the second aqueous medium while or after dispersing the washed primary particles therein; and producing toner particles by adding a charge controlling agent to the third liquid. This method satisfies the following inequation:0.60&#x2266;&#x2266;1.00wherein Sa represents a BET specific surface area of the primary particles included in the third liquid and Sb represents that of the toner particles stored for 2 weeks at 40&#xb0; C., 70% RH.

Method of manufacturing toner and toner

Growing community of inventors

Mie, Japan

Miyuki Hirata