Patent application number | Description | Published |
20080305423 | Toner, and Developer, Developing Apparatus, Process Cartridge, Image Forming Apparatus and Image Forming Method - A toner that includes toner base particles including a binder resin and a colorant, wherein the toner base particles have a surface roughness (Ra) of 18 nm to 50 nm and a standard deviation (RMS) of the surface roughness of 0.5 nm to 9.9 nm. A developer, a developing apparatus, a process cartridge, an image forming apparatus, and an image forming method can all use a developer including the toner. | 12-11-2008 |
20090123186 | ELECTROSTATIC IMAGE DEVELOPING TONER, TONER KIT AND IMAGE FORMING APPARATUS - A toner is provided that comprises a colorant and a binder resin, wherein the binder resin comprises a polyester resin that is prepared by a polycondensation reaction in the presence of at least a titanium-containing catalyst expressed by General Formula (II) or (II), the toner has a volume average particle diameter of 2.0 μm to 10.0 μm and a ratio Dv/Dn within a range of 1.00 to 1.40, in which Dv represents a volume average particle diameter and Dn represents a number average particle diameter, | 05-14-2009 |
20110281209 | TONER, TWO COMPONENT DEVELOPER, PROCESS CARTRIDGE AND COLOR IMAGE FORMING APPARATUS - A toner containing: a core containing at least a first binder resin, a colorant, and a releasing agent; and a shell containing at least a second binder resin; wherein the toner has a core-shell structure, and has a softening index of 86° C. to 95° C. and a thermal hardness of 0.7 to 1.8. | 11-17-2011 |
20110294064 | TONER, METHOD OF MANUFACTURING TONER, DEVELOPER, IMAGE FORMING METHOD, AND IMAGE FORMING APPARATUS - A toner comprising a colorant, a release agent, an amorphous polyester, and a crystalline polyester having an endothermic peak temperature of 60 to 80° C. and an endothermic quantity of 3.0 to 20.0 J/g. The endothermic peak temperature is determined from a constant rate component curve of the crystalline polyester obtained in a second heating of temperature-modulated differential scanning calorimetry. The endothermic quantity is determined from an area between the constant rate component curve and its base line drawn between 0 and 100° C., within a temperature range of 0 to 50° C. | 12-01-2011 |
20120231387 | TONER, TWO-COMPONENT DEVELOPER, AND IMAGE FORMING METHOD - A toner including a mother particle and an external additive is provided. The mother particle includes a core including a crystalline polyester, an amorphous polyester, a colorant, and a release agent; and a shell including resin particles. A deformation amount H | 09-13-2012 |
20130236828 | TONER, DEVELOPER, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - A toner including a binder resin and a colorant, the toner having a core-shell structure containing a core and a shell, wherein the binder resin contains a crystalline polyester resin and a non-crystalline polyester resin, wherein a ratio (A/B) of a mass (A) of the crystalline polyester resin to a mass (B) of the non-crystalline polyester resin is 5/95 to 75/25, and wherein a ratio (Ds/Dc) of a hardness (Ds) of the shell to hardness (Dc) of the core is 1.05 to 1.50 where the hardnesses (Ds) and (Dc) are measured with a scanning probe microscope. | 09-12-2013 |
20130244169 | TONER, DEVELOPER, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - To provide a toner, which contains: a binder resin; a colorant; and wax, wherein the toner has Ta of 30° C. to 55° C., and Tb—Ta of 8° C. to 25° C., where Ta is a glass transition temperature of the toner determined from a constant heating component of a DSC curve of the toner obtained in a second heating process of temperature modulated differential scanning calorimetry, and Tb is a glass transition temperature of the toner determined from a constant heating component of a DSC curve of the toner obtained in a first heating process of temperature modulated differential scanning calorimetry. | 09-19-2013 |
20130260297 | TONER, PROCESS CARTRIDGE, AND DEVELOPER - A toner including a colorant, a resin, and a volatile organic compound in an amount from 1 to 200 μg/g is provided. The toner has a softening index Ct within a range from 70 to 100° C. | 10-03-2013 |
20130323634 | TONER, DEVELOPER, AND IMAGE FORMING METHOD - To provide a toner, which contains: base particles each having a core-shell structure, where a core of the base particle contains crystalline polyester, non-crystalline polyester, a colorant, and a releasing agent, and a shell of the base particle contain a resin, wherein the toner has thermal hardness of 0.5 to 1.8, wherein the toner has a softening index of 80° C. to 95° C., and wherein the toner has thermal retentiveness of 30° C. to 50° C. | 12-05-2013 |
20150072277 | TONER, IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, PROCESS CARTRIDGE, AND DEVELOPER - A toner comprised of mother toner particles each including a colorant, a resin A capable of forming a crystalline structure, and a resin B incapable of forming a crystalline structure is provided. The resin A is dispersed in the resin B in the state of phase separation. The long axis of each dispersed particle of the resin A has a length of from 30 to 200 nm and the length ratio of the long axis to the short axis is from 2 to 15. The DSC endothermic quantity attributable to the resin A is from 8 to 20 J/g. | 03-12-2015 |
20150072278 | TONER, AND DEVELOPER AND IMAGE FORMING APPARATUS INCLUDING SAME - A toner comprised of toner particles including an amorphous resin and a crystalline resin is provided. The coefficient of variation in softening temperature among resin portions in the toner particles is 15% or less when the softening temperature is measured with a scanning probe microscope equipped with a heatable cantilever. | 03-12-2015 |
20150072286 | TONER FOR DEVELOPING ELECTROSTATIC IMAGES AND DEVELOPER - A toner includes an amorphous resin; and a crystalline polyester resin dispersed in the amorphous resin. The crystalline polyester resin has a volume-average particle diameter (Dv) of from 0.07 to 0.20 μm, and a ratio (Dv/Dn) of the volume-average particle diameter (Dv) to a number-average particle diameter (Dn) thereof of from 1.00 to 2.25. | 03-12-2015 |