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Clarified Styrene Emulsion/Aggregate Toner

A technology of toner and styrene, applied in the direction of developer, instrument, optics, etc., can solve the problems of increasing the life of fixing roller and high temperature fixing roller bearing, reducing the power of imaging equipment, etc.

Inactive Publication Date: 2017-12-26
XEROX CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Operating toner at low temperatures reduces the power required to operate the imaging device and increases the life of the fuser roller and high temperature fuser roller bearings

Method used

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  • Clarified Styrene Emulsion/Aggregate Toner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0104] clarified toner formulation

[0105] The formulation is as follows:

[0106] 55 parts deionized water;

[0107] 27 parts low molecular weight (LMW) styrene / n-butyl acrylate / carboxyethyl acrylate emulsion latex resin;

[0108] 5 parts of low-melting paraffin wax with a melting point of 75.5°C ± 5.5°C; and

[0109] 0.2 parts of polyaluminum chloride

[0110] The above formulation was placed in a reactor (eg Henschel mixer) and subjected to high shear homogenization at 4000 rpm for 20 minutes. The resulting mixture was then mixed at 350 rpm with a 4" impeller at a 45° angle, 1-2" from the bottom of the reactor, while heating to 55-60°C. The mixture was then heated until the particle size was about 5-8 μm, reaching a target size of 7 μm, and then a high Tg shell polymer of styrene / n-butyl acrylate / carboxyethyl acrylate (12 parts) was added to the reaction mixture. Once grown to a suitable size (ie, about 6.5 to about 7.5 μm), add 3 parts of EDTA solution to the aggrega...

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PUM

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Abstract

A clear styrenic emulsion / aggregate toner. The present disclosure describes methods of preparing clear, high gloss toners, including toner compositions resulting from the methods, which are useful in protective coatings and gloss enhancement.

Description

technical field [0001] The present disclosure generally relates to a method of preparing toner compositions, such as high gloss clear toners. Background technique [0002] Toner resins with suitable melt viscosities can produce high gloss images on plain paper, eg, from about 25 to about 60 gloss units, see eg, US Pat. Toners that produce high gloss images are often chosen for craft color applications and transparencies. The fixing or fusing temperature of such toners can be high and can be higher than 160°C. This results in high power consumption, low fixation speed and reduced service life of the fuser roller and the fuser roller bearings. Hot and cold drift can also be a problem. Also, many toner resins with low melting points have narrow fixing latitude and have poor mechanical properties, such as excessive fine powder generation upon jetting, which may result in increased toner cost. [0003] There is a need for a high-gloss toner resin and a toner thereof, which ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G9/08G03G9/087
CPCG03G9/093G03G9/09307G03G9/09321G03G9/09364G03G9/09378G03G9/09385G03G9/09392G03G9/08G03G9/087
Inventor M·A·斯维尼G·E·米西克-劳伦诺维兹R·D·贝利D·W·阿萨尔瑟
Owner XEROX CORP