Patent application number | Description | Published |
20080199799 | Electrostatic image developer, process cartridge, and image forming apparatus - An electrostatic image developer contains a toner and a carrier having a resin coating layer formed on the surface of a core material containing a ferrite component, wherein a ratio R1/R2 is from 0.88 to 0.92 where R1 is the resistance value (Ω) of the developer having a toner concentration of 2 mass % in a state formed into a magnetic brush, at an applied voltage of 10 | 08-21-2008 |
20090109448 | ELECTROSTATIC CHARGE IMAGE DEVELOPING CARRIER, ELECTROSTATIC CHARGE IMAGE DEVELOPER, ELECTROSTATIC CHARGE IMAGE DEVELOPER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS - An electrostatic charge image developing carrier includes: a magnetic particle; and a resin coating layer that covers a surface of the magnetic particle with a resin, the resin coating layer containing an acid having a cyclic diterpene structure and either of carbon black or nigrosine dispersed therein. | 04-30-2009 |
20120122026 | DEVELOPER FOR ELECTROSTATIC PHOTOGRAPHY, PROCESS CARTRIDGE FOR IMAGE FORMING APPARATUS, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - A developer for electrostatic photography, includes: a toner containing toner particles containing a colorant and a binder resin, and an external additive having a number average particle diameter of about 100 nm or more and about 800 nm or less; and rugged particles having a rate of ruggedness represented by formula (1) of about 30% or more and about 70% or less: | 05-17-2012 |
20120183895 | MAGENTA TONER, DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - Provided is a magenta toner containing toner particles that contain a colorant and a binder resin, wherein the colorant contains C.I. Pigment Red 57:1 and C.I. Pigment Yellow 180, a mass ratio between the C.I. Pigment Red 57:1 and the C.I. Pigment Yellow 180 being 99:1 to 10000:1, and wherein the binder resin contains a polyester resin that has a repeating unit derived from bisphenol A ethylene oxide represented by formula (1): | 07-19-2012 |
20120270145 | ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER, ELECTROSTATIC CHARGE IMAGE DEVELOPING DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - An electrostatic charge image developing toner includes a binder resin that contains an amorphous polyester resin and a colorant. The toner satisfies the following expressions: 20 μS/cm≦ρ≦150 μS/cm, and 0.0110-25-2012 | |
20130078565 | ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER, ELECTROSTATIC CHARGING IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, METHOD OF PRODUCING ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER, AND IMAGE FORMING APPARATUS - An electrostatic charge image developing toner contains a binder resin, a release agent, a black colorant, a methylglycine diacetate, and an aluminum element, the content of the methylglycine diacetate is in the range of from 5 ppm to 500 ppm, and the content of the aluminum element is in the range of from 0.07 atomic % to 0.18 atomic % in total element analysis using fluorescent X-rays. | 03-28-2013 |
20130143153 | TRANSPARENT ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER, ELECTROSTATIC CHARGE IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - A transparent electrostatic charge image developing toner satisfies the relationships of the following Formulas (1), (2), and (3) wherein Dt (μm) is a volume average particle diameter, upper GSDv is an upper volume particle size distribution index, and lower GSDp is a lower number particle size distribution index: Formula (1): 18≦Dt≦30; Formula (2): 1.05≦upper GSDv≦1.20; and Formula (3): 1.29≦lower GSDp≦1.50. | 06-06-2013 |
20130224643 | TRANSPARENT ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER AND METHOD OF MANUFACTURING THE SAME, ELECTROSTATIC CHARGE IMAGE DEVELOPER, TONER CARTRIDGE, IMAGE FORMING METHOD, AND IMAGE FORMING APPARATUS - A transparent electrostatic charge image developing toner contains a binder resin, europium, and bismuth. | 08-29-2013 |
20130244152 | TRANSPARENT TONER, IMAGE FORMING METHOD, AND TONER SET - A transparent toner includes toner particles having a volume average particle diameter in the range of 18 μm to 28 μm, and satisfying formulae (1) and (2): | 09-19-2013 |
20140106270 | TRANSPARENT ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER, METHOD OF MANUFACTURING THE SAME, ELECTROSTATIC CHARGE IMAGE DEVELOPER, TONER CARTRIDGE, IMAGE FORMING METHOD, AND IMAGE FORMING APPARATUS - A transparent electrostatic charge image developing toner includes a binder resin and a compound represented by the following Formula (1): | 04-17-2014 |
20140147778 | TRANSPARENT ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER, ELECTROSTATIC CHARGE IMAGE DEVELOPER, TONER CARTRIDGE, DEVELOPER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - A transparent electrostatic charge image developing toner includes a binder resin and a compound represented by the following Formula ( | 05-29-2014 |
20140193750 | ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER, ELECTROSTATIC CHARGE IMAGE DEVELOPER, AND TONER CARTRIDGE - An electrostatic charge image developing toner includes toner particles; and an external additive that is externally added to surfaces of the toner particles, in which a content of nitrogen atoms on the surfaces of the toner particles is from 0-8 atomic % to 5.0 atomic % and a content of nitrogen atoms at a depth of 10 nm inside from the surfaces of the toner particles is 0.4 atomic % or less when measured by X-ray photoelectron spectroscopy. | 07-10-2014 |