Toner compositions and methods
A technology of toner and thermal adhesion, applied in the direction of developer, instrument, optics, etc., can solve problems such as poor thermal adhesion
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Embodiment 1
[0162] Example 1: Toner containing 0.2% by weight of NK-2911
[0163] a. Preparation of emulsion containing resin and NK-2911. Into a 2L beaker containing approximately 900 g of ethyl acetate, measure 120 g of amorphous resin (XP777) and 0.24 g of NK-2911IR absorbent. The mixture was stirred at about 300 rpm at room temperature to dissolve the resin and IR absorber in ethyl acetate. 2.56 g of sodium bicarbonate was measured into a 3L Pyrex glass flask reactor containing approximately 700 g of deionized water. The aqueous solution was homogenized in the 3L glass flask reactor using an IKA Ultra Turrax T50 homogenizer at 4,000 rpm. Then, as the reaction mixture continues to be homogenized, the resin solution is slowly poured into the aqueous solution, the homogenizer speed is increased to 8,000 rpm, and homogenization is performed for about 30 minutes under the conditions. After the homogenization is completed, the glass flask reactor and its contents are placed in a heating ja...
Embodiment 2
[0165] Example 2: Toner containing 0.2% by weight of NK-4680
[0166] a. Preparation of emulsion containing resin and NK-4680. The emulsion was prepared according to the same procedure described in Example 1a, except that the IR absorber NK4680 was used instead of NK2911.
[0167] b. Preparation of toner containing 0.2% by weight of NK-4680. 363.09 g of the amorphous resin and IR absorber emulsion of Example 2a and 48 g of unsaturated CPE resin emulsion (UCPE, 30% by weight) were added to a 2L glass reactor equipped with a top stirrer and heating mantle. Add 35.84g Al under homogenization 2 (SO 4 ) 3 The solution (1% by weight) serves as aggregating agent. The mixture was then heated to 40.3°C at 250 rpm to aggregate. A Coulter particle counter was used to monitor the particle size until the core particles reached a volume average particle size of 4.63 μm, with a GSD of 1.23. Then, 169.44 g of the above resin and IR absorber emulsion were added as a shell, so that the average ...
Embodiment 3
[0168] Example 3: Toner containing 0.2% by weight of S-0813
[0169] a. Preparation of emulsion containing resin and S-0813. The emulsion was prepared according to the same procedure described in Examples 1a and 2a, except that IR absorber S-0813 was used instead of NK2911 or NK-4680.
[0170] b. Preparation of toner containing 0.2% by weight of S-0813. To a 2L glass reactor equipped with a top stirrer and heating mantle, 311.02 g of the amorphous resin and IR absorber emulsion of Example 3a and 48 g of unsaturated CPE resin emulsion (UCPE, 30% by weight) were added. Add 35.84g Al under homogenization 2 (SO 4 ) 3 The solution (1% by weight) serves as aggregating agent. The mixture was then heated to 43.1°C at 300 rpm to aggregate. A Coulter particle counter was used to monitor the particle size until the core particles reached a volume average particle size of 4.68 μm, with a GSD of 1.23. Then, 145.14 g of the above resin and IR absorber emulsion was added as a shell, so that ...
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