The effect of drying behavior of coatings containing pigment and CaCl2 on inkjet print quality

Katriina Mielonen, Sami-Seppo Ovaska, Johanna Lyytikäinen, Leena-Sisko Johansson, Österberg Monika, Kaj Backfolk

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

The effect of drying behavior of coatings containing starch, synthetic silicate pigment and CaCl2 on inkjet print quality was studied. It is known, that print quality is dependent on the inksubstrate interaction, absorption behavior of the substrate and colloidal stability behavior of the ink at the substrate interface. One efficient way of improving the fixation of anionic inkjet pigment colorants is by controlling the electrostatic interaction and colloidal stability by using e.g. divalent or multivalent metal salts. In this study, we have investigated the effect of end moisture content of coating containing hydroxypropylatedstarch, synthetic silicate and divalent metal salt (CaCl2) on inkjet print quality of pigment-based ink. It was seen that significant differences in print density could be obtained when using different drying strategies. The obtained effects on substrate-ink interactions were ascribed to changes in coating structure and migration of CaCl2 and better film forming caused by the more intense drying process.

Original languageEnglish
Title of host publication33rd International Conference on Digital Printing Technologies, NIP 2017
PublisherSociety for Imaging Science and Technology
Pages37-41
Number of pages5
Volume2017-November
ISBN (Electronic)9780892083312
Publication statusPublished - 2017
MoE publication typeA4 Conference publication
EventInternational Conference on Digital Printing Technologies - Denver, United States
Duration: 5 Nov 20179 Nov 2017
Conference number: 33

Conference

ConferenceInternational Conference on Digital Printing Technologies
Abbreviated titleNIP
Country/TerritoryUnited States
CityDenver
Period05/11/201709/11/2017

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