Ink For Laser Imaging

An ink and graphene technology, applied in the field of laser imaging, can solve the problems of deep coloring of substrate/background, substrate damage, insufficient high-contrast image, etc., and achieve the effect of good laser imaging effect.

Inactive Publication Date: 2017-12-01
德塔莱斯有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, their NIR absorption is usually not high enough to obtain high-contrast images
This problem can be overcome by using more absorbers or delivering more laser power, but this in turn causes the substrate / background to become overly pigmented, or the substrate to become unacceptably damaged during laser marking

Method used

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  • Ink For Laser Imaging
  • Ink For Laser Imaging
  • Ink For Laser Imaging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0187] - Conventional carbon black used in the coating was obtained from Cabot.

[0188] - Graphene nanoplatelet samples were obtained from Haydale, Carmarthenshire UK.

[0189] The following 4 ink formulations were prepared. Percent content is determined by weight, ie w / w%.

Embodiment 1

[0194] Embodiment 1=graphene nanoplatelet 0.5%

[0195] Both inks were drawn onto 50 micron white BOPP film using an RK coater equipped with a K2 rod.

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Abstract

An ink formulation comprising: a graphene-based component, a colour change agent, a binder, and a solvent; and the use of the same in laser-imaging.

Description

technical field [0001] The present invention relates to laser imaging. Background technique [0002] The use of thermal or near infrared (NIR) absorbers based on "blackbody" carbons in laser marking processes is well known. However, their NIR absorption is usually not high enough to obtain high-contrast images. This problem can be overcome by using more absorber or delivering more laser power, but this in turn causes the substrate / background to become too darkly colored, or the substrate to become unacceptably damaged during laser marking. [0003] It is therefore an object of the present invention to provide an ink formulation for laser imaging which produces a high contrast image. Another object of the present invention is to provide an ink formulation for laser imaging that results in low levels of background color formation. [0004] It has surprisingly been found that a form of carbon known as graphene can be added to color shifting ink formulations and provides supe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/037C09D11/50B41M5/26
CPCB41M5/26C09D11/037C09D11/50B41M5/24B41M5/282B41M5/284B41M5/32B41M5/323B41M5/3338C08J3/28C08J2400/00C08K3/042
Inventor 安东尼·贾维斯马丁·瓦尔克亚当·欧洛尔科
Owner 德塔莱斯有限公司
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