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The Effect of Properties of Encapsulated Pigment Inks on Optical Density

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If an ink jet is applied to an office printer, it is important to obtain high optical density on plain paper, consistent with that of a laser beam printer. Also, on the point of durability and water resistance, pigment inks have advantages for office use over dye inks. Encapsulated pigment inks that are coated with water-insoluble polymers in particular can achieve high optical density, compared with conventional pigment inks, which are dispersed by water-soluble dispersants.

For this paper, to use these encapsulated pigment inks effectively, we prepared several encapsulated pigment inks, which had different wettability and penetration ability on plain paper, and investigated the relationship between their properties and their optical density on plain paper. We found that inks with both high wettability and low penetration ability indicate high optical density. To confirm the cause(s) of these results, we measured the ratio of white spot to solid image by image processing. We also examined the depth profile of the pigment from the paper surface by TOF-SIMS analysis.
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Document Type: Research Article

Publication date: 2006-01-01

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  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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