| Patent Number |
Title Of Patent |
Date Issued |
| 7592116 |
Indium-containing carrier for electrophotography, developer using the same, and developer contai |
September 22, 2009 |
| The object of the present invention is to provide a carrier for electrophotography which includes a core material and a coating layer comprising particles on a surface of the core material, in which the carrier for electrophotography comprises indium (In) in an amount of 0.0001% by m |
| 7563555 |
Toner, developer including the toner, and method for fixing toner image |
July 21, 2009 |
| A toner composition including toner particles including a binder resin including a modified polyester resin, and a second resin having a weight average molecular weight of from 2,000 to 10,000; a colorant; a release agent; and a particulate material which is present at least a surface |
| 7553598 |
Electrophotographic carrier, developer, developer container, process cartridge, image forming ap |
June 30, 2009 |
| A carrier contains a core; and a cover layer located overlying the core, wherein the cover layer comprises a binder resin, a first particulate material and a second particulate material, wherein the following relationships are satisfied: 1<(D1/h)<10, and 0.001<(D2/h)<1, w |
| 7541128 |
Toner, developer including the toner, and method for fixing toner image |
June 2, 2009 |
| A toner composition including toner particles including a binder resin including a modified polyester resin, and a second resin having a weight average molecular weight of from 2,000 to 10,000; a colorant; a release agent; and a particulate material which is present at least a surface |
| 7527908 |
Carrier, developer, developer container, image forming method and process cartridge |
May 5, 2009 |
| A carrier contains a core material; and a coated film containing a binder resin, and a particulate material, the coated film covering the core material, wherein a ratio (D/h) of an average particle diameter (D) of the particulate material to an average thickness (h) of the coated film |
| 7521164 |
Toner, and, developer, toner container, process cartridge, image forming apparatus and image for |
April 21, 2009 |
| A toner which includes a toner material, wherein the toner satisfies the following formula: 0.degree. C..ltoreq..DELTA.Tm.ltoreq.20.degree. C. where .DELTA.Tm represents Tma (.degree. C.)-Tmb (.degree. C.), Tma (.degree. C.) is 1/2 flown-out temperature of the toner by a capillary ty |
| 7473508 |
Toner, developer and image forming apparatus |
January 6, 2009 |
| A toner composition including toner particles including at least a binder resin; and a colorant, wherein the toner composition satisfies at least one of the following relationships (1) and (2): B.ltoreq.14 when 155<A.ltoreq.180; and B.ltoreq.0.6A-79 when 145.ltoreq.A.ltoreq.155, ( |
| 7437111 |
Fixing device, and image forming apparatus using the fixing device |
October 14, 2008 |
| An image forming apparatus including an image bearing member; a charger; a light irradiator; a developing device; a transfer device; an imagebearingmember's cleaner; and a fixing device, wherein the fixing device includes a fixing member configured to fix a toner image upon applicati |
| 7429442 |
Toner, and two component developer and image forming apparatus using the toner |
September 30, 2008 |
| A toner is provided that contains a binder resin; a colorant; a release agent; and an external additive, wherein the toner has an average circularity of from 0.940 to 0.965 and a crater having a depth of from 0.02 to 0.1 .mu.m, and wherein the crater has an amount of the external add |
| 7396630 |
Toner, developer including the toner, and method for fixing toner image |
July 8, 2008 |
| A toner composition including toner particles including a binder resin including a modified polyester resin, and a second resin having a weight average molecular weight of from 2,000 to 10,000; a colorant; a release agent; and a particulate material which is present at least a surface |
| 7381513 |
Carrier, developer, image forming method and process cartridge for electrostatic image developme |
June 3, 2008 |
| A carrier containing a core material and a resin coating layer located overlying the surface of the core material. The resin coating layer contains resin and electroconductive particles having an oil absorption amount of from 10 to 300 ml/100 g. The electroconductive particle contain |
| 7374851 |
Toner, and, developer, toner container, process cartridge, image forming apparatus and image for |
May 20, 2008 |
| A toner which includes a toner material, wherein the toner satisfies the following formula: 0.degree. C..ltoreq..DELTA.Tm.ltoreq.20.degree. C. where .DELTA.Tm represents Tma (.degree. C.)-Tmb (.degree. C.), Tma (.degree. C.) is 1/2 flown-out temperature of the toner by a capillary ty |
| 7303847 |
Dry toner |
December 4, 2007 |
| A dry toner is provided that is prepared by a method including the steps of (A) dissolving or dispersing a toner composition in an organic solvent to prepare a toner composition liquid and (B) dispersing the toner composition liquid in an aqueous liquid which contains a binder resin |
| 7217487 |
Toner, developer using the same, toner container using the same, process cartridge using the sam |
May 15, 2007 |
| A toner has a storage elastic modulus (G') of 500 Pa or more at a frequency of 1 Hz and temperature of 180.degree. C., while the toner is obtained by dissolving or dispersing a toner composition in an organic solvent, further dispersing the solution or dispersion thereof in an aqueou |
| 6947692 |
Image forming method and apparatus |
September 20, 2005 |
| A method for developing an electrostatic latent image, including forming a magnet brush of a developer including a toner and a carrier on a developing sleeve including a main magnet and auxiliary magnets; and developing the electrostatic latent image with the magnet brush to form a t |
| 6936390 |
Toner, method of producing same and image forming device |
August 30, 2005 |
| A toner for developing an electrostatic image, including a colorant, a binder resin comprising a modified polyester, and fine resin particles having a weight average particle diameter of 50 to 300 nm and being present on an outer surface of the toner, wherein the toner has a BET spec |
| 6852462 |
Toner, method of forming the toner, and image forming method and apparatus using the toner |
February 8, 2005 |
| A toner comprising: a binder resin which is at least a resin selected from the group consisting of modified polyester resins and unmodified polyester resins; and a colorant; the product toner having a volume-average particle diameter (Dv) to a number-average particle diameter (Dn) rati |
| 6849369 |
Toner for developing electrostatic image, method for manufacturing the toner, developer includin |
February 1, 2005 |
| Toner particles including a binder resin; a colorant; and a particulate resin which is present at least on a surface of the toner particles and which has a glass transition temperature of form 50 to 90.degree. C., wherein a ratio (Dv/Dn) of a volume average particle diameter (Dv) of the |
| 6818370 |
Toner for developing electrostatic latent image, toner cartridge containing the toner and image |
November 16, 2004 |
| A toner for developing an electrostatic latent image, containing a colorant and a binder resin composed of two different resins (A) and (B), wherein resin (A) is substantially free of tetrahydrofuran insolubles, is selected from polyester resins and polyol resins and has such a molecular |
| 6787280 |
Electrophotographic toner and method of producing same |
September 7, 2004 |
| A toner for developing an electrostatic image, comprising toner particles each containing at least a colorant and a resin, and an external additive present on each of the toner particles, wherein the water wettability of said toner particles without the external additive is W.sub.0, wher |
| 5879849 |
Developing device using one component developer |
March 9, 1999 |
| A developing device using one component developer for developing an electrostatic latent image on a photoconductive drum. The one component developer includes particles of parents of toner, resin beads and silica. The silica adhere to a surface of each resin bead. The resin beads and the |
