摘要:
A toner preparation process is disclosed. The process comprises a step of stirring the premixed colored resin particles and inorganic fine particles in the presence of mixing medium having a substantially spherical shape in the container, and a step of collecting toner particles comprised of the colored resin and inorganic particles thereon having a predetermined size by classifying at the stirring step.A continuous method for manufacturing a toner for an electrostatic imaging is provided. The resulting toner is low in electricity consumption, free from limitation on processing volume, and the method is capable of improving productivity and reducing manufacturing cost.
摘要:
A method of fixing a toner image on a supporting member by bringing the supporting member supporting thereon the toner image into pressure contact with a fixing roller, wherein an elasticity improving agent for increasing the elasticity of the toner upon coming into contact with the toner is disposed on a member which comes into direct or indirect contact with the outer circumferential surface of the fixing roller.The elasticity improving agent is a material causing the reaction which increases the molecular weight of the binder resin of the binder and/or a reaction promoter for such a reaction.The elasticity improving agent is selected from a group consisting of:(a) agents which are capable of enhancing the elasticity of toner material,(b) polyhydric alcohols,(c) polyvalent amines and(d) polyvalent carboxylic acids.
摘要:
A developing roller that can form a toner image with high quality includes: a supporting shaft, and at least one resin layer formed on a peripheral face of the supporting shaft, the resin layer containing carbon black in which a number average Feret's diameter is in a range from 5 to 300 nm and primary particles account for 5% or more on a number basis, and the carbon black being dispersed in a base resin material thereof.
摘要:
The present invention provides an intermediate transfer belt allowing formation of a high-quality toner image.The present invention relates to an intermediate transfer belt having at least one resin layer that is wound around at least a pair of supporting shafts, for receiving a toner image transferred from a photosensitive member, the resin layer comprising a carbon black dispersed in a base resin material, the carbon black having a number-average particle size of Feret's diameter of 5 to 300 nm and containing primary particles in an amount of 5% or more on a number basis.
摘要:
An embodiment may be an image forming method, which comprises forming a latent image on an image carrier; developing the latent image with a toner to form a toner image on the image carrier; transferring the toner image; and applying ultrasonic vibration at one of the developing step and the transferring step. The toner comprises a resin particle and a release agent particle having a melting point in a range of 40 to 75° C. and the toner has Dp50 of 3.0 to 5.0 μm.
摘要:
Disclosed is a method for forming color image, in which one of the yellow, magenta, cyan and black toners is a high water content toner, and one of the yellow, magenta, cyan and black toners is a toner low water content toner, water content of the high water content toner is 1.2 to 2.5 % by weight based on the high water content toner, and water content of the low water content toner is 0.1 to 1.2% by weight based on the low water content toner.
摘要:
An image forming method is disclosed. The method comprises the steps of forming a latent image on a latent image carrying member, developing the latent image by a developer containing a toner, transferring the toner image onto an intermediate transfer member, transferring the toner image transferred on the intermediate transfer member onto a image forming support, and fixing the toner image formed on the image forming support, wherein the toner contains a resin and a colorant, and the toner is constituted by toner particles having a variation coefficient of the shape coefficient of not more than 16% and a number variation coefficient of the particle size distribution of not more than 27%.
摘要:
A toner for developing an electrostatic latent image comprising a resin, a colorant and a releasing agent is disclosed. The releasing agent comprises a mixture of a plurality of compounds represented by formula (1) having difference carbon number of carbon atoms in R2 R1—(OCO—R2)n (1) wherein n represents an integer of 1 to 8 carbon atoms which may has a substituent, R1 is a hydrocarbon group having from 1 to 40, R2 is a hydrocarbon group having from 8 to 40 carbon atoms which may has a substituent.