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Led curable inkjet inks having uv absorbers, and associated systems and processes

A technology of inkjet ink and light absorber, which is applied in the field of structures and related processes and printing systems, and can solve the problems that UV absorbers cannot be completely replaced

Inactive Publication Date: 2017-08-18
ELECTRONICS FOR IMAGING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods cannot completely replace the use of UV absorbers

Method used

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  • Led curable inkjet inks having uv absorbers, and associated systems and processes
  • Led curable inkjet inks having uv absorbers, and associated systems and processes
  • Led curable inkjet inks having uv absorbers, and associated systems and processes

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Embodiment Construction

[0029] image 3 is a schematic partial cross-sectional view of a print 40 having one or more ink layers 46 (eg, 46a-46e) on at least one surface 44 (eg, 44a) of a substrate 42, wherein the one or more ink layers 46 include ink 60 ( Figure 4 ), the ink 60 includes a selective light absorber 66 ( Figure 4 ) and enhanced. The selective light absorber 66 is configured to allow the light source 122 (such as the LED curing assembly 122) ( Image 6 ) The excitation light 123 ( Image 6 ) for curing under 150 ( Figure 9 ), while being irradiated by light 20, the photostability of the finished product (such as the cured print 40) can be enhanced.

[0030] In some embodiments, each ink layer 46 is enhanced with a selective light absorber 66 . In other embodiments, only the top layer 46 (e.g., 46e) (e.g., LED curable clearcoat 46e) is enhanced with a selective light absorber 66 (e.g., to provide a layer configured to substantially absorb incident UVA and UVB light). protective ...

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Abstract

Enhanced inks, and associated systems and processes are disclosed, wherein one or more enhanced inkjet layers are established in a work piece, i.e. a substrate. One or more of the inks comprise a selective photo absorber that allows UV curing, while absorbing incident UV light after production. In some embodiments, the selective photo absorber can be configured to absorb light at wavelengths less than 380 nm, while a photoinitiator in the ink can be activated by light having an average wavelength that is equal to or greater than 380 nm. Incident UVA and UVB light is readily absorbed by the cured enhanced ink layer, thus minimizing deleterious effects such as any of yellowing, loss of gloss, or cracking. The selective photo absorber can be used in one or more layers, and can be used on an outer protective inkjet layer.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Patent Application No. 14 / 490,559, filed September 18, 2014, the entire contents of which are incorporated herein by reference. technical field [0003] The present invention relates to the fields of printing systems, structures and related technologies, and in particular, the present invention relates to improved inks for use in printing systems. Background technique [0004] Broad-spectrum ultraviolet radiation (UVR) has three wavelength ranges, including long-wave ultraviolet (UVA) light (wavelength range approximately 320nm to 400nm), medium-wave ultraviolet (UVB) light (wavelength range approximately 290nm to 320nm), short-wave ultraviolet (UVC) light Light (wavelength range 100nm to 280nm). The solar ultraviolet (UV) rays that reach Earth consist primarily of UVA light, with a small amount of UVB light also. Since UVC radiation is completely absorbed by ozone, molecular ox...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D1/34B41M5/30C08F2/48C08J7/18C09D11/30C09D11/101
CPCC09D4/00B41M7/0081C09D11/101C09D11/38B41J11/00214C09D133/04
Inventor 约书亚·塞缪尔
Owner ELECTRONICS FOR IMAGING INC