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Method for preparing color toner

A color toner and toner technology, applied in the field of color toner preparation, can solve the problems of single resin type, low production efficiency, strict condition control requirements, etc., and achieve the effect of simple method and excellent comprehensive properties.

Active Publication Date: 2013-07-03
邯郸汉光办公自动化耗材有限公司
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Problems solved by technology

However, the current chemical pulverization technology still has disadvantages such as relatively complicated process, strict condition control requirements, single type of resin (only free radical polymerization type), low production efficiency, etc.

Method used

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  • Method for preparing color toner
  • Method for preparing color toner

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Embodiment Construction

[0024] Nano-resin ball emulsion preparation method A: 20 grams of polystyrene with a Tg of 58° C. and a softening point of 110-120° C. was dissolved in 20 ml of chloroform for later use. Add 200 milliliters of deionized water, 2 grams of sodium dodecylbenzenesulfonate ( DDBS), 1 gram of polyethylene glycol (PEG-4000), 0.5 gram of Span-80 and 0.5 gram of Tween-80, and stir well. Adjust the stirring speed to 5000 rpm, add the polystyrene chloroform solution within half an hour, and stir at 80° C. for 1 hour. Change the condenser tube to distillation mode to remove chloroform, and use vacuum distillation operation to speed up the speed. After the chloroform is determined to be removed, keep the high-speed stirring to cool the temperature to room temperature quickly, and obtain an emulsion of about 100nm polystyrene balls.

[0025] Nano-resin ball emulsion preparation method B: In addition to nano-resin ball emulsion preparation method 1, replace DDBS with anionic surfactant Marl...

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Abstract

The invention relates to a method for preparing color toner for printing or copying, and the method comprises the following steps: respectively obtaining resins, pigments and a water-based dispersion solution containing various other necessary ingredients by using physical dispersing methods; carrying out local stabilization on particles in an aqueous medium by using a surface active agent; effectively adjusting the degree of association of the particles through the reversible effect of stabilizing dispersion and de-stabilizing aggregation (generated under the condition that the pH value is changed) among the dispersing particles adsorbing the surface active agent; and finally carrying out further heat treatment on the particles so as to obtain toner particles which have the advantages that the size is controllable, the shape is nearly spherical, and the particle sizes are concentrated.

Description

technical field [0001] The invention relates to a preparation method of color toner for printing or copying. Background technique [0002] Toner is mainly composed of polymer resin (capping agent) and pigment, and resin accounts for 80-90% ratio. In layman's terms, toner is an aggregate of colored resin particles that can be charged, and other components include charge regulator (CCA), surfactant, lubricant, etc. The role of the resin is to wrap the stable and dispersed pigment particles and make the colorant adhere to the printing medium to form a firm graphic. The choice of resin depends on the requirements of the fixing process such as temperature and time; charge regulators (such as crystal violet, salicylic Acid derivatives) is to make the toner particles have sufficient charging degree and charging rate; surfactants (such as silicon oxide powder, zinc stearate) are to improve particle fluidity and prevent toner particles from agglomerating; lubricants ( The use of lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G9/097G03G9/08
Inventor 续守民杜丽英李刚杨联明
Owner 邯郸汉光办公自动化耗材有限公司
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