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Improved relative humidity sensitivity improved toner containing silicate clay particles

A technology of silicate clay and toner, which is applied to the equipment, developer, and electrical recording process using charge patterns, etc., which can solve the problem of increasing production costs, increasing the minimum melting temperature, etc. question

Inactive Publication Date: 2007-01-10
XEROX CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although efforts to combat this effect include increasing coverage of external additives on the outer surface of the toner particles, this can have negative effects such as increased production costs, need to increase minimum fusing temperature, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] Described herein are toner particles consisting of a polymeric base, at least one colorant, and silicate clay particles distributed throughout the base. Waxes may also preferably be included in the toner particles.

[0010] In embodiments, the binder further comprises an acrylate-containing gel latex.

[0011] In embodiments, the acrylate-containing gel comprises from about 8% to about 35% by weight of the total binder.

[0012] In embodiments, the toner particles further include a shell layer thereon.

[0013] In an embodiment, the shell layer consists essentially of the acrylate-containing polymer.

[0014] In an embodiment, the acrylate-containing polymer of the shell layer and the acrylate-containing polymer of the base are the same.

[0015] In embodiments, the shell also includes silicate clay particles distributed therein.

[0016] In embodiments, the toner particles further include a wax dispersion.

[0017] In embodiments, the silicate clay particles are a...

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PUM

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Abstract

Toner particles, preferably emulsion aggregation toner particles, have improved relative humidity sensitivity through inclusion therein of silicate clay particles such as kaolin clay. The toner particles include a binder, preferably an acrylate-containing binder, at least one colorant, and silicate clay particles distributed in the binder. In a core-shell embodiment, the silicate particles are distributed in the core, the shell layer, or both. Developers of the toner in combination with carrier particles are also described.

Description

technical field [0001] Described herein are toners having improved sensitivity to relative humidity by including silicate clay particles, preferably aluminosilicate particles, in the toner particles and emulsion aggregation toners comprising the same are described herein. agent developer. Background technique [0002] One major type of emulsion aggregation toner includes acrylate based emulsion aggregation toners, such as styrene acrylate toner particles. As an example see, eg, US Patent 6,120,967, which is hereby incorporated by reference in its entirety. [0003] Emulsion aggregation techniques typically involve the formation of an emulsion latex of resin particles having a small size, e.g., about 5 to about 500 nanometers, by heating the resin in water, optionally with a solvent if desired, or by preparing the latex in water using emulsion polymerization diameter. A colorant dispersion, such as a pigment dispersed in water, is formed separately...

Claims

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Application Information

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IPC IPC(8): G03G9/09G03G9/10G03G9/08G03G15/00
CPCG03G9/08728G03G9/09364G03G9/08793G03G9/08782G03G9/09725G03G9/09321G03G9/09385G03G9/08711G03G9/09342G03G9/0804
Inventor R·P·N·维尔金D·范贝西恩C·冯
Owner XEROX CORP