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

Method of imaging and developing negative-working elements

An imaging and component technology, used in photography, printing technology, photosensitive material processing, etc.

Inactive Publication Date: 2010-01-20
EASTMAN KODAK CO
View PDF45 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Or develop UV-imaged negative working elements with organic solvent-based developers that contain amines or other organic compounds that are repelled from an environmental standpoint

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
  • Method of imaging and developing negative-working elements
  • Method of imaging and developing negative-working elements
  • Method of imaging and developing negative-working elements

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0182] By adding polymer A (1.2g), oligomer A (0.83g), IR dye (0.094g), 1035 (0.50g, 5% concentration in MEK), SR-399 (1.28g), Pigment 951 (0.34g), PEGDA (0.28g), Phosmer PE (0.038g), 307 (0.32 g), and Initiator A (0.22 g) were dissolved in PGME (29.9 g) and MEK (15.0 g) to make an imageable layer formulation. Electrochemically grained and sulfuric acid anodized aluminum substrates post-treated with polyvinylphosphoric acid were coated with this formulation at a dry coating weight of approximately 1.3 g / m 2 .

[0183] Place the resulting imageable element in A Trendsetter 3244x imagesetter (Creo, Burnaby, British Columbia, Canada, a subsidiary of Eastman Kodak Company) was used and exposed with an 830 nm IR laser at 4.5 W power and varying drum speed (250-60 RPM). The imaged elements were then developed in a pan at 25°C with a 955 Developer. The minimum energy to obtain a stable solid density image and a clear background is about 120mJ / cm 2. After the resulting print...

Embodiment 2

[0185] By adding polymer B (1.2g), oligomer A (0.83g), IR dye (0.094g), 1035 (0.50g, 5% concentration in MEK), SR-399 (1.28g), Pigment 951 (0.34g), PEGDA (0.28g), Phosmer PE (0.038g), 307 (0.32 g), and Initiator A (0.22 g) were dissolved in PGME (29.9 g) and MEK (15.0 g) to make an imageable layer formulation. Electrochemically grained and sulfuric acid anodized aluminum substrates post-treated with polyvinylphosphoric acid were coated with this formulation and had a dry coating weight of approximately 1.3 g when properly dried on a rotating drum at 77°C for approximately 2 minutes / m 2

[0186] The resulting imageable elements were then imaged and processed as described in Example 1. The minimum ability to obtain a stable solid density image and a clear background is about 130mJ / cm 2 . After the resulting printing plate was kept at a constant temperature of 48°C or 38°C / 80% humidity for 5 days, it showed similar digit speed and clear background.

Embodiment 3

[0188] An imageable layer formulation was prepared as described in Example 1 and coated onto an electrochemically grained and sulfuric acid anodized aluminum substrate post-treated with polyvinylphosphoric acid, when suitably placed on a rotating drum at 77°C. After drying for about 2 minutes, the dry coating weight is about 1.3g / m 2 .

[0189] A topcoat formulation containing Airvol 203 polyvinyl alcohol (67.9 g of a 9.7% aqueous solution), polyvinylimidazole (5.8 g of a 20% aqueous solution), 2-propanol (20.7 g) and Water (405.6g). After coating the topcoat formulation in a similar manner to the imageable layer formulation, the imageable element was dried on a rotating drum at 77°C for about 2 minutes to provide about 0.35 g / m 2 dry top coat.

[0190] The resulting imageable elements were imaged and processed as described in Example 1 (except that the imaging power was 2.5W). The minimum energy required to obtain a stable solid density image and a clear background is app...

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

No PUM Login to View More

Abstract

Negative-working imageable elements can be imaged and then developed using a lower pH organic-based single-phase developer that is less toxic and corrosive and that can be more readily disposed of after use. This developer has a pH less than 12 and comprises a) an amphoteric surfactant comprising a nitrogen-containing heterocycle, b) an amphoteric surfactant having two or more nitrogen atoms, or c) an amphoteric surfactant of a) and an amphoteric surfactant of b).

Description

technical field [0001] The present invention relates to a method for imaging and developing negative-working elements using an environmentally friendly developer. Background technique [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, a radiation-polymerizable component, an initiator system, and a binder. Each of these ingredients 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 have focused on the use of radiation-sensitive compositions imageable by lasers or laser diodes, more particularly radiation-sensitive compositions imageable and / or developed on-press. Since the laser can be directly controlled by a computer, laser exposure does not require trad...

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
IPC IPC(8): G03F7/32B41C1/10
CPCB41N3/06B41C1/1008G03F7/322B41C2210/04B41C2210/06B41C2210/10B41C2210/22B41C2210/24
Inventor T·陶K·B·雷S·A·贝克利P·R·韦斯特
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