Back to results
US 9,005,859 B2Granted
Colorless transparent toner, toner set, development agent, image forming apparatus, and printed matter
AssigneeRicoh Company, Ltd.
InventorsAkiyoshi Sabu, Shinya Nakayama, Atsushi Yamamoto, Yukiko Nakajima, Hideyuki Santo
Life of this patent
Estimating the term…
Abstract
A colorless transparent toner containing a crystalline resin having a urethane bond and/or a urea bond.
Claims12
A colorless transparent toner comprising:
- a binder resin that comprises a crystalline resin having a urethane bond and/or a urea bond;
- wherein the colorless transparent toner has a ratio {C/(C+A)} of 0.15 or greater, where C represents an integration intensity of a spectrum deriving from a crystalline structure and A represents an integration intensity of a spectrum deriving from a non-crystalline structure in a diffraction spectrum obtained by an X-ray diffraction device;
- and
- wherein the colorless transparent toner satisfies the relations:
- T1−T2≦30° C. and T2≧30° C.,
- where T1 represents a maximum endothermic peak temperature for a second time temperature rising and T2 represents a maximum exothermic peak temperature for a first time temperature descending as measured by a differential scanning calorimeter in a temperature range of from 0° C. to 100° C. at a temperature rising and descending speed of 10° C./min.
3 more elements
Dependencies are inferred from the claim text.