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Durable false-proof colorless carbon powder used for laser printer and its preparing method

A laser printer, durable technology, used in optics, electrical recording, instruments, etc., can solve the problems of poor durability, difficult to adapt to the long-term preservation requirements of archival graphic materials and imprints, and inability to meet confidentiality requirements, etc., to achieve durability. Good results

Inactive Publication Date: 2007-05-23
周学良
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the main components of blue, red, yellow, and colored toners used in laser printers are organic pigments, and their color durability is poor. The color imprints and color graphics printed by these toners have a short storage time and are difficult to adapt to. Long-term storage requirements for archival graphic materials and imprints
And above-mentioned these toners all have no anti-counterfeiting performance, and the graphics and texts printed out by these toners also have no anti-counterfeiting performance, especially the printed signatures, seals and other imprints are difficult to distinguish the authenticity, which is easy for counterfeiters to take advantage of. machine
In addition, the above-mentioned toner is colored toner, and the graphic materials and imprints of the archives printed with it can be seen with the naked eye, and cannot meet the confidentiality requirements under special conditions such as wartime

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Select 4 parts of calcium carbonate, 22 parts of ultraviolet fluorescent powder, 80 parts of polyester resin, 3 parts of polypropylene wax, 1 part of charge regulator, 2 parts of dimethyldichlorosilane and 5 parts of hexamethyl base disilazane. Among them the charge regulator is a metal chromium salicylate.

[0022] The calcium carbonate, ultraviolet fluorescent powder, polyester resin, polypropylene wax and charge regulator are first poured into a mixer, and uniformly mixed to form a mixture.

[0023] Then put the above-mentioned mixture into an extruder, extrude the above-mentioned mixture at a temperature of 90° C., and press it into a tablet.

[0024] Then, the flake mix was cooled to 40°C and crushed into pieces.

[0025] Thereafter, the above fragments were pulverized into pulverized powder with a particle diameter of 30 μm by a pulverizer.

[0026] After that, use a pressure of 7kg / m 2 Airflow pulverization of the above-mentioned pulverized powder in a fluidi...

Embodiment 2

[0030] Select 6 parts of calcium carbonate, 26 parts of ultraviolet fluorescent powder, 86 parts of polyester resin, 5 parts of polypropylene wax, 2 parts of charge regulator, 4 parts of dimethyl dichlorosilane and 7 parts of hexamethyl base disilazane. Among them, the charge regulator is a metal azochrome compound.

[0031] The calcium carbonate, ultraviolet fluorescent powder, polyester resin, polypropylene wax and charge regulator are first poured into a mixer, and uniformly mixed to form a mixture.

[0032] Then put the above-mentioned mixture into an extruder, extrude the above-mentioned mixture at a temperature of 120° C., and press it into a tablet.

[0033] The flake mix was then cooled to 45°C and crushed into pieces.

[0034] Thereafter, the above fragments were pulverized into pulverized powder with a particle diameter of 40 μm by a pulverizer.

[0035] After that, use a pressure of 7kg / m 2 Airflow pulverization of the above-mentioned pulverized powder in a flui...

Embodiment 3

[0039] Choose 8 parts of calcium carbonate, 30 parts of ultraviolet fluorescent powder, 92 parts of polyester resin, 7 parts of polypropylene wax, 4 parts of charge regulator, 5 parts of dimethyldichlorosilane and 9 parts of hexamethanol base disilazane. Among the charge regulators are metal chromium salicylates.

[0040] The calcium carbonate, ultraviolet fluorescent powder, polyester resin, polypropylene wax and charge regulator are first poured into a mixer, and uniformly mixed to form a mixture.

[0041] Then put the above-mentioned mixture into an extruder, extrude the above-mentioned mixture at a temperature of 150° C., and press it into a tablet.

[0042] Then, the flake mix was cooled to 50°C and crushed into pieces.

[0043] Thereafter, the above fragments were pulverized into pulverized powder with a particle size of 50 μm by a pulverizer.

[0044] After that, use a pressure of 7kg / m 2 Airflow pulverization of the above-mentioned pulverized powder in a fluidized ...

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Abstract

The invention discloses a durability false-proof colorless carbon powder for the laser printer and its preparation method. It is made of 4~8 shares iron oxide yellow, 20~30 shares ultraviolet luminescent powder, 80~92 shares polyester resin, 3~7 shares polypropylene wax, 1~4 shares charge regulator, 2~5 shares dimethyldichlorosilane, and 5~9 shares hexamethyldisilazane, through mixing, extrusion, crushing and screening, to crank out. Using the durability false-proof colorless carbon powder for the laser printer to print color graphic and text, and color imprint, it is not only color durability good, to meet the long-time preservation requirement of the archive documentation, and apply to the confidentiality requirement under the special conditions, such as wartime, but also it can identify authenticity, with false-proof performance, so that false makers have no opportunities. It especially applies to print the imprint and archive documentation, such as signature, stamp, etc.

Description

technical field [0001] The invention relates to a carbon powder and a preparation method thereof. Specifically, it is durable anti-counterfeiting colorless toner for laser printers used to print archival graphic materials or anti-counterfeiting marks. Suitable for ordinary laser printers or color laser printers. Background technique [0002] With the advancement of science and technology, the level of office automation is getting higher and higher, and various archive documents including signatures and seals are gradually being automatically printed by laser printers instead of traditional manual operations. The use of laser printers to automatically print archival documents requires that the toner must have color durability. Only in this way can the long-term preservation requirements of archival documents be met. [0003] At present, the main components of blue, red, yellow, and colored toners used in laser printers are organic pigments, and their color durability is poo...

Claims

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Application Information

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IPC IPC(8): G03G9/08G03G9/097G03G9/09
Inventor 周学良
Owner 周学良
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