Science and Technology of Dyes and Pigments for Imaging Applications - various colors arising from polymorphs in organic pigments -
Abstract:Dyes and pigments play a crucial role as the colorants in the imaging areas. In the period of black & white copies, organic pigments have extensively been studied as photoconductors for electrophotographic photoreceptors. However, nowadays, pigments have more and more attracted attention as colorants, not only for color copies based upon the electrophotographic process, but also for inkjet printers. The color of the dyestuff is mostly determined by its molecular structure; whereas that of pigments arises from the molecular structure as well as intermolecular interactions in the solid states. Therefore, the color of pigments can be influenced by molecular arrangement, i.e., crystal structure. In present keynote, I begin with a brief introduction about the difference between dyes and pigments in general and then talk about the intermolecular interactions in the solid state from the standpoint of the crystal structure. I will also introduce you a variety of polymorphs in pigments that are isolated as single crystals and discuss some representative factors which induce phase transition, leading to different colors.
Document Type: Research Article
Publication date: January 1, 2007
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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