摘要:
A toner for forming an electrophotographic image is disclosed. The toner particle contains at least two inorganic salts including an inorganic salt comprising a positive ion having a first valence and an inorganic salt comprising a positive ion having a second valence different from the first valence, a total amount of the inorganic salt having the first valence is greatest among the inorganic salts in the toner particle, and a total amount of the inorganic salt having the second valence is second greatest among the inorganic salts in the toner particle.
摘要:
A toner for developing an electrostatic image, includes a toner particle containing a binder resin and a colorant, wherein a Feret's average horizontal diameter of the colorant is from 10 nm to 500 nm, a ratio of the colorant having the Feret's horizontal diameter of from 2 nm to 300 nm is 50% by number or more, and the colorant contains a compound or a lake of the compound.
摘要:
The toner for developing an electrostatic image, includes a toner particle containing a binder resin and a colorant. The colorant has Feret's average horizontal diameter from 10 nm to 500 nm, and 50 number % or more of colorant has a Feret's horizontal diameter of from 2 nm to 300 nm. The colorant contains a compound represented by General Formula (1):
摘要:
An electrostatic image developing toner comprising a resin and a colorant is disclosed. The resin comprises a polymerization component of a polymerizable monomer having a polar group in an amount of 1.0 to 10.0 percent by weight, and a polymerization component of a polyfunctional polymerizable monomer in an amount of 0.1 to 10.0 percent by weight; ratio (A/B) is from 0.5 to 20.0 percent; and either a peak or a shoulder is positioned in the molecular weight region of 5,000 to 20,000, wherein A is an area of a chromatograph curve in the molecular weight region of 60,000 to 1,000,000, based on GCP measurement of a THF soluble component of toner and B is an entire area of the chromatograph curve.
摘要:
A process for preparing a color toner for developing an electrostatic image comprising a step of polymerizing monomers to obtain resin particles, wherein the color toner comprises primary particles or secondary particles of resin particles, and a metal complex dye represented by the following formula (1) or formula (2), wherein, X1 and X3 each are a group of atoms bonding with each other which can form at least bidentate coordination bond with a metal ion; Y1 represents an aromatic hydrocarbon ring, a 5- or 6-membered heterocyclic ring or —L4═Y2; Y2 and Y3 each represent an aromatic hydrocarbon ring or a 5- or 6-membered heterocyclic ring; L1 and L4 each represent a substituted or an unsubstituted methine group or a nitrogen atom; L2 and L3 each represent a substituted or an unsubstituted methine group; M represents a metal ion which can form at least a bidentate coordination bond with said group of atoms bonding with each other represented by X1 and X3; m represents an integer of 0, 1, 2 or 3; n1 and n2 each represent an integer of 1, 2 or 3.
摘要:
A toner for developing an electrostatic image is disclosed. The toner is composed of association of a plurality of fine polymer particles, and the total volume of pores having a diameter of not more than 0.1 .mu.m on the toner surfaces is not more than 30 percent of the total toner volume. An image forming method employing the same is also disclosed. A toner which does not result in an unstable charge amount over an extended period of use can be obtained.
摘要:
An image forming method comprises: fixing an image formed by a toner on a record sheet in a nip member formed by a pressurizing member which is compressibly contacted against a heating fixing rotor having an elastic body layer formed on an endless periphery surface capable of orbitally moving and which creates locally a large distortion occurred in the elastic body layer in vicinity of outlet thereof, wherein the toner includes at least two metal salts having different valence and has a relationship given by the Formula (1). 2.0≧a≧0.1 1.0≧b≧0.01 7.5≧a/b≧1.1 Formula (1) wherein a (mass %) is defined as a content of a metal salt which is contained at a highest content in total toner mass and b (mass %) is defined as a content of a metal salt which is contained at a second-highest content in the total toner mass, and mass values of a and b represent anhydride reduced values.
摘要:
An electrostatic charge image developing toner having: a toner particle having a colorant and a resin; and a surfactant having two or more anionic groups within one molecule in an amount of 10 ppm to 10,000 ppm.
摘要:
An image forming method comprises: fixing an image formed by a toner on a record sheet in a nip member formed by a pressurizing member which is compressibly contacted against a heating fixing rotor having an elastic body layer formed on an endless periphery surface capable of orbitally moving and which creates locally a large distortion occurred in the elastic body layer in vicinity of outlet thereof, wherein the toner includes at least two metal salts having different valence and has a relationship given by the Formula (1) 2.0≧a≧0.1 1.0≧b≧0.01 7.5≧a/b≧1.1 Formula (1) wherein a (mass %) is defined as a content of a metal salt which is contained at a highest content in total toner mass and b (mass %) is defined as a content of a metal salt which is contained at a second-highest content in the total toner mass, and mass values of a and b represent anhydride reduced values.
摘要:
Disclosed is a toner for developing an electrostatic latent image, the toner containing polymer particles having a carboxyl group on the surface thereof in the range of5.times.10.sup.-11 mol/cm.sup.2 .ltoreq.A.ltoreq.3.times.10.sup.-9 mol/cm.sup.2wherein A represents an amount of the carboxyl group obtained using a conductometric titration method.