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Organosol liquid toner including amphipathic copolymeric binder having crosslinkable functionality

An amphiphilic copolymer, organosol technology, applied in the development agent, electrography, optics, etc., can solve the problems of adding extra process steps to apply a protective layer, undesired, disturbing the color stability of color composites, etc.

Inactive Publication Date: 2004-08-18
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such lamination is often used to increase the effective dot gain of the image, thereby interfering with the color stability of the color composite
Additionally, laminating a protective layer on the final image surface adds both an additional cost of substance and an additional process step to apply the protective layer, which may be undesirable for certain printing applications such as plain paper reproduction or printing

Method used

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  • Organosol liquid toner including amphipathic copolymeric binder having crosslinkable functionality
  • Organosol liquid toner including amphipathic copolymeric binder having crosslinkable functionality
  • Organosol liquid toner including amphipathic copolymeric binder having crosslinkable functionality

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0163] Embodiment 1 (comparison)

[0164] Into a 5000 ml 3 necked round bottom flask equipped with a condenser, a thermocouple connected to a digital temperature controller, a nitrogen inlet tube connected to dry nitrogen, and a magnetic stirrer, was charged 2561 g of Norpar TM 15,849g of LMA, 26.8g of 98% HEMA and 8.75g of V601. While stirring the mixture, the reaction flask was purged with dry nitrogen at a flow rate of approximately 2 liters / minute for 30 minutes. A hollow glass stopper was then inserted into the open end of the condenser and the nitrogen flow rate was reduced to approximately 0.5 L / min. The mixture was heated to 70°C for 16 hours. Quantitative determination of conversion.

[0165] The mixture was then heated to 90°C and held at this temperature for 1 hour to destroy any remaining V601, then cooled back to 70°C. Then, the nitrogen inlet tube was removed, and 13.6 g of 95% DBTDL was added to the mixture, followed by 41.1 g of TMI. TMI was added dropwi...

Embodiment 2

[0168] Utilize the method and device of embodiment 1, combine 2561gNorpar TM 15. 823g of LMA, 26g of DAAM, 26.8g of 98% HEMA and 8.75g of V601, the resulting mixture was reacted at 70°C for 16 hours. The mixture was then heated to 90°C and held at this temperature for 1 hour to destroy any remaining V601 before cooling back to 70°C. 13.6 g of 95% DBTDL and 41.1 g of TMI were then added to the cooled mixture. TMI was added dropwise over a period of approximately 5 minutes while stirring the reaction mixture. Following the procedure of Example 1, the mixture was allowed to react at 70°C for about 6 hours, at which point the conversion was quantitative. The mixture was then cooled to room temperature. The cooled mixture was a viscous, clear solution containing invisible insoluble mater.

[0169] Using the halogen drying method described above, the liquid mixture was found to have a percent solids of 24.47%. The molecular weight was subsequently determined using the GPC metho...

Embodiment 3

[0171] Utilize the method and device of embodiment 1, combine 2561gNorpar TM 15. 823g of LMA, 26g of MAA, 26.8g of 98% HEMA and 8.75g of V601, the resulting mixture was reacted at 70°C for 16 hours. The mixture was then heated to 90°C for 1 hour to destroy any remaining V601 before cooling back to 70°C. 13.6 g of 95% DBTDL and 41.1 g of TMI were then added to the cooled mixture. TMI was added dropwise over a period of approximately 5 minutes while stirring the reaction mixture. Following the procedure of Example 1, the mixture was allowed to react at 70°C for about 6 hours, at which point the conversion was quantitative. The mixture was then cooled to room temperature. The cooled mixture was a viscous, clear solution containing invisible insoluble mater.

[0172] Using the halogen drying method described above, the liquid mixture was found to have a percent solids of 25.10%. The molecular weight was subsequently determined using the GPC method described above; based on tw...

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Abstract

This invention relates to liquid toner compositions for electrographic applications. Organosol liquid toner compositions comprise binder particles dispersed in a non-aqueous liquid carrier, wherein the particles are derived from a composition comprising one or more crosslinkable amphiphilic copolymers. The organosol is readily combined with additional ingredients, such as one or more visual enhancement additives and other desired ingredients, and processed to form a liquid toner composition. The present invention also describes methods of preparing and printing liquid toners derived from these organosols using electrography.

Description

[0001] Cross References to Related Applications [0002] This non-provisional application claims the benefit of the commonly assigned U.S. provisional applications, serial numbers 60 / .437,881, filed January 3, 2003, and 10 / 691,191, filed (on an unknown date), titled FOR ORGANOSOL LIQUID TONER INCLUDINGAMPHIPATHIC COPOLYMERIC BINDER HAVING CROSS LINKABLE FUNCTIONALITY, which application is hereby incorporated by reference in its entirety. technical field [0003] This invention relates to liquid toner compositions for electrography. More particularly, the present invention relates to liquid electrographic toners derived from organosols incorporated with amphiphilic copolymer binder particles comprising crosslinkable functional groups. Background technique [0004] In the electrographic and electrostatic printing methods (collectively referred to as electrographic methods), an electrostatic image is formed on the surface of a photosensitive member or a dielectric member, resp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G9/12G03G9/08G03G9/13G03G9/135
CPCG03G9/131G03G9/13G03G9/133G03G9/1355G03G9/132G03G9/08
Inventor 盖伊·L·赫尔曼詹姆斯·A·贝克朱莉·Y·钱
Owner SAMSUNG ELECTRONICS CO LTD
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