Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Imageable elements and methods of use in negative working lithographic printing plates

A technology of imaging components and components, applied in lithographic printing equipment, printing, printing process and other directions, can solve problems such as difficulty in controlling exposure conditions

Active Publication Date: 2011-11-16
EASTMAN KODAK CO
View PDF30 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While some early elements are believed to be sufficiently resistant to fogging under ambient lighting, exposure conditions in large production facilities are difficult to control and it would be desirable to eliminate this potential problem of concern

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Imageable elements and methods of use in negative working lithographic printing plates
  • Imageable elements and methods of use in negative working lithographic printing plates
  • Imageable elements and methods of use in negative working lithographic printing plates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0239] By adding 1.1g 580 dispersion, 3.3 g polymer A (10%, acid number 98 mg KOH / g in MEK / PGME / BLO / water ratio 5:2:1:1), 0.5 g SR399, 0.5 g NK ester A -DPH, 0.1g Phosmer PE, 0.18g IB-05, 0.05g S0507, 0.3g Pigment A and 0.4g FluorN TM 2900 (5% in PGME) was dissolved or dispersed in 3.5 g PGME, 1.2 g BLO, 5.7 g MEK, 1 g methanol and 0.6 g water to make an imageable layer formulation. The imageable layer formulation was applied to an electrochemically grained and sulfuric acid anodized aluminum substrate to provide approximately 1.2 g / m 2 The dry coating weight of the substrate has been post-treated with poly(vinyl phosphoric acid).

[0240] Three different topcoat formulations were applied to the resulting imageable layer, each formulation comprising 4 g poly(vinyl alcohol) with a hydrolysis level of less than or equal to about 85%, 4 g IPA, 92 g water, and 0.02 g FS-1520 to provide about 0.4g / m 2 dry coating weight. The three different poly(vinyl alcohol) resins used i...

Embodiment 2

[0256] By adding 1.1g 580 dispersion, 3.3 g polymer A (10%, acid number 98 mg KOH / g in MEK / PGME / BLO / water ratio 5:2:1:1), 0.5 g SR399, 0.5 g NK ester A -DPH, 0.1g Phosmer PE, 0.18g IB-05, 0.05g S0726, 0.3g Pigment A and 0.4g FluorN TM 2900 (5% in PGME) was dissolved or dispersed in 3.5 g PGME, 1.2 g BLO, 5.7 g MEK, 1 g methanol and 0.6 g water to make an imageable layer formulation. The imageable layer formulation was applied to an electrochemically grained and sulfuric acid anodized aluminum substrate to provide approximately 1.2 g / m 2 The dry coating weight of the substrate has been post-treated with poly(vinylphosphonic acid).

[0257] Three different topcoat formulations were applied to the resulting imageable layer, each formulation comprising 4 g poly(vinyl alcohol) with a hydrolysis level of less than or equal to about 85%, 4 g IPA, 92 g water, and 0.02 g FS-1520 to provide about 0.4g / m 2 dry coating weight. The three different poly(vinyl alcohol) resins used in...

Embodiment 3

[0263] By adding 1.1g 580 dispersion, 3.3 g polymer A (10%, acid number 98 mg KOH / g in MEK / PGME / BLO / water ratio 5:2:1:1), 0.5 g SR399, 0.5 g NK ester A -DPH, 0.1g Phosmer PE, 0.18g IB-05, 0.05g 66e, 0.3g Pigment A and 0.4g FluorN TM 2900 (5% in PGME) was dissolved or dispersed in 3.5 g PGME, 1.2 g BLO, 5.7 g MEK, 1 g methanol and 0.6 g water to make an imageable layer formulation. The imageable layer formulation was applied to an electrochemically grained and sulfuric acid anodized aluminum substrate to provide approximately 1.2 g / m 2 The dry coating weight of the substrate has been post-treated with poly(vinylphosphonic acid).

[0264] Three different topcoat formulations were applied to the resulting imageable layer, each formulation comprising 4 g poly(vinyl alcohol) with a hydrolysis level of less than or equal to about 85%, 4 g IPA, 92 g water, and 0.02 g FS-1520 to provide about 0.4g / m 2 dry coating weight. The three different poly(vinyl alcohol) resins used were...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
acid valueaaaaaaaaaa
Login to View More

Abstract

Imageable elements that can be imaged using infrared radiation comprise an imageable layer and a protective overcoat on a hydrophilic substrate. The imageable layer includes an IR-sensitive cyanine dye. The protective overcoat predominantly comprises one or more poly (vinyl alcohol) resins, each of which has a hydrolysis level of 85% or less. The use of this particular overcoat composition used in combination with the IR-sensitive cyanine dye provides improved tolerance to fogging by white light while maintaining desired imaging speed. The imageable elements are used for negative-working lithographic printing plates.

Description

field of invention [0001] The present invention relates to imageable elements such as negative working lithographic printing plate (plate) precursors having improved white light resistance. The invention also relates to methods of using these imageable elements. Background of the invention [0002] Radiation-sensitive compositions are commonly used in the preparation of imageable materials, including lithographic printing plate precursors. Such compositions typically include a radiation sensitive component, an initiator system, and a binder, each of which has been the focus of research to provide various improvements in physical properties, imaging performance, and image characteristics. [0003] Recent developments in the field of printing plate precursors involve the use of radiation-sensitive compositions which can be imaged by means of lasers or laser diodes and, more specifically, can be imaged on-press (on-press) and / or or develop. Since the laser can be directly co...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B41C1/10B41M5/36G03F7/028G03F7/029G03F7/031G03F7/033
CPCB41C2210/04Y10S430/127Y10S430/121G03F7/092Y10S430/145G03F7/029B41C2210/22B41C2201/02B41C1/1016B41C2201/14B41C2201/04B41C2201/10B41C2210/06B41C2210/24B41C2210/266
Inventor J·于K·B·雷
Owner EASTMAN KODAK CO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com