Reduction of Ozone Fading of Copper Phthalocyanine Dyes by Non-traditional Antiozonants
Abstract:Ozone fading of printed images has been an important issue in digital imaging industries. Copper phthalocyanine dyes, widely used in imaging products, are highly susceptible to ozone fading. Mixing of dyes with conventional antiozonants, used in other non-imaging industrial products, is usually not suitable for systems where the dyes are required to be in solution, due to the relatively lower solubility of these antiozonants in aqueous or solvent systems. Some of these efficient antiozonants also react with air, resulting in highly colored compounds, which make them unsuitable for imaging products. The presence of suitable functional groups in the antiozonant molecules can reduce both these problems. The results presented in this paper show that several compounds, which are not used as typical antiozonants, improve ozone stability of copper phthalocyanine dyes to significant extents, with minimal colorimetric shifts. The effects of substituents on these antiozonant molecules and the possible mechanisms of the antiozonant effect are also discussed in this paper.
Document Type: Research Article
Publication date: January 1, 2004
For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.
Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.
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