摘要:
The present invention provides a developer for developing electrostatic latent image which comprises capsule toners and carriers; said capsule toner having many wrinkles or hollows and upheavals and containing liquid in a shell, and the carriers have no sharp edge or a lower specific gravity, the image copied by the developer can be fixed by pressure under low temperature.
摘要:
The present invention provides a carrier coated by a polymer particle layer containing fine magnetic particles around a magnetic core, which may contain an electrical charge controlling agent, and the core may be pre-treated with a coupling reagent; the carrier gives excellent clearness to the copy and durability at repeating use.
摘要:
The present invention relates to a color toner, to the surface of which a small amount of charge-giving agent is fixed. The amount of the charge-giving agent is usually 0.03% to 0.65% by weight of toner, and it becomes still smaller when the resin composing the toner is made from a monomer including a nitrogen containing polar functional group or fluorine containing polar functional group. This composition enables the toner to be charged stably in a narrow charge distribution, thereby decreasing the fog and flying of toner, and resulting in a distinct color image without any turbidity in color.
摘要:
The present invention provides a capsule toner having many wrinkles or hollows and upheavals and containing liquid in a shell, which is useful for toner for pressure fixation.
摘要:
An electrostatic latent-image developing toner comprising: a core particle and a shell layer formed on an outer portion thereof, wherein the shell layer comprises a crystalline polyester resin having a softening point from 60 to 120° C. at 70 to 100% by weight of the entire shell-layer constituent resin, and an image-forming method using the toner.
摘要:
The present invention relates to a developer for developing electrostatic latent images, which comprises:a toner containing a binder resin being a thermoplastic resin composed of a copolymer of styrene and acrylic acid ester and/or methacrylic acid ester, with 6.ltoreq..eta.(110)/.eta.(130).ltoreq.25 (where .eta.(110) represents the melting viscosity at 110.degree. C., and .eta.(130) the same at 130.degree. C.), and carbon black having pH 6 or above; anda carrier having its magnetic core coated with a polyolefinic resin, the carrier's core content being 94-99% by weight, the weight average molecular weight of the polyolefinic resin 5.times.10.sup.4 -3.times.10.sup.5 and the carrier's electric resistance 1.times.10.sup.7 -1.times.10.sup.12 .OMEGA..cm, with 1-15% by weight of electrically conductive fine particles in proportion to the polyolefinic resin added thereto.
摘要:
The present invention relates to a toner for developing electrostatic latent images comprising:a core particle comprising resin with 1,000-100,000 in number average molecular weight (Mn.sub.1),an intermediate layer coating the core particle and comprising resin with 5,000-300,000 in number average molecular weight (Mn.sub.2) and,an outermost surface layer coating the intermediate layer and comprising resin with 10,000-1,000,000 in number average molecular weight (Mn.sub.3);the number average molecular weights Mn.sub.1, Mn.sub.2 and Mn.sub.3 satisfies the relationship of;Mn.sub.1
摘要:
The present invention relates to a developer for developing electrostatic latent images obtained by mixing toner particles comprising a binder resin and a coloring agent with fine magnetic particles treated by hydrophobic agent.
摘要:
According to the present invention, the incorporation of polymeric-magnetic coordination complex powder in a toner effects improvements of chargeability, dusting resistance and fixing properties, and the formation of clear color images.
摘要:
In a method for developing an electrostatic latent image comprising the steps of;(a) supplying toner onto a toner transporting member which confronts an electrostatic latent image support member with the leectrostatic latent image thereon at an developing region, said toner being 12 .mu.m or less in mean particle size, 10% or less of toner with at least 16 .mu.m in particle size, and 20% or less in coefficient of variation;(b) forming a thin layer of said toner on the toner transporting member by pressing said toner; and(c) transferring said toner from said thin layer of said toner onto the electrostatic latent image formed on an electrostatic latent image support member for developing the electrostatic latent image.