Patent application number | Description | Published |
20090196658 | TONER, DEVELOPER, IMAGE FORMING METHOD, IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE - A toner having a weight-average particle diameter of from 2 to 7 μm and a circularity of from 0.95 to 1.00, including a colorant; a binder resin; and at least one oxidized particulate material, comprising a silicon element, wherein the oxidized particulate material has a number-average particle diameter (Dn) of from 30 to 80 nm; a standard deviation rate of the particle diameter distribution (the standard deviation/Dn×100) of from 0 to 10%; a shape factor SF1 of from 100 to 130; a standard deviation rate of the SF1 (the standard deviation/SF1×100) of from 0 to 10%; a shape factor SF2 of from 100 to 125; and a standard deviation rate of the SF2 (the standard deviation/SF2×100) of from 0 to 10%. | 08-06-2009 |
20090220883 | TONER, DEVELOPER, AND IMAGE FORMING METHOD - A toner containing at least a binder resin and a colorant, wherein the toner has a core-shell structure composed of a core, and a shell having a thickness of 0.01 μm to 2 μm on a surface of the core, and wherein the toner satisfies the following relation: | 09-03-2009 |
20100316948 | TONER FOR DEVELOPING ELECTROSTATIC LATEMT IMAGE, DEVELOPER INCLUDING THE TONER, AND IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS USING THE DEVELOPER - A toner for developing electrostatic latent images, including a binder resin; a colorant; and a release agent, wherein the toner has a glass transition temperature (Tg) of from 55 to 75° C., a melting point (T | 12-16-2010 |
20110003244 | TONER, METHOD FOR PREPARING THE TONER, AND IMAGE FORMING METHOD USING THE TONER - The toner includes a binder resin; a colorant; and a release agent. The first inter-particle force Fp(A) of the toner, which is measured under an environmental condition of 23° C. and 60% RH after the toner is pressed for 1 minute at 25° C. under a compression stress of 15 kg/cm | 01-06-2011 |
20110097659 | TONER, DEVELOPMENT AGENT, AND IMAGE FORMATION METHOD - A toner including a mother toner particle having a core-shell structure formed of a core containing a binder resin, a coloring agent, and an optional releasing agent, and a shell having a layer thickness of from 0.01 to 2.00 μm, the core having a softening index of from 60 to 85° C. as measured by a flow tester, and the shell having a thermal hardness of from 0.7 to 1.8 m, and an optional external additive. | 04-28-2011 |
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 |
20150227066 | TONER, IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, PROCESS CARTRIDGE, AND DEVELOPER - A toner of the present invention includes at least a colorant and a resin, has crystallinity CX or 20 or greater, and has a dynamic viscoelasticity characteristic in which a logarithmic value Log G′(50) of storage elastic modulus (Pa) at 50° C. is from 6.5 to 8.0 and a logarithmic value Log G′(65) of storage elastic modulus (Pa) at 65° C. is from 4.5 to 6.0, when the dynamic viscoelasticity characteristic is measured by temperature sweep from 40° C., at a frequency of 1 Hz, at a strain amount control of 0.1%, and at a temperature elevating rate of 2° C./min. | 08-13-2015 |
20150234302 | TONER, IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, PROCESS CARTRIDGE, AND TWO-COMPONENT DEVELOPER - To provide a toner, which contains: a colorant; a resin; and a releasing agent, wherein a spin-spin relaxation time (T2s) originated from a soft component is 0.10 msec to 0.50 msec, where the soft component is obtained with a hard component from an echo signal of the toner by a solid-echo technique of pulsed NMR, and a proportion of a proton intensity of the soft component is 50.0% or lower. | 08-20-2015 |
20160004178 | TONER, IMAGE FORMING APPARATUS, PROCESS CARTRIDGE, AND DEVELOPER - A toner, including: a colorant; and a binder resin, wherein a spreadability of the toner under a non-pressurized condition is 1.20 to 2.50, wherein a common logarithm of a storage modulus at 100° C. (G′) of the toner is 4.0 [log Pa] to 5.0 [log Pa], and wherein a ratio of a loss modulus at 100° C. (G″) to the storage modulus at 100° C. (G′) of the toner (G″/G′=tan δ) is 1.1 to 2.2. | 01-07-2016 |
20160070191 | TONER AND TWO-COMPONENT DEVELOPER - Provided is [i] a toner including at least a colorant, a resin, and a releasing agent, wherein a spin-spin relaxation time (t | 03-10-2016 |