Assessment of the UV inkjet ink penetration into laboratory papers within triticale pulp and its influence on print quality / Irena Bates in COLORATION TECHNOLOGY, Vol. 138, N° 1 (02/2022)  

[article]  inCOLORATION TECHNOLOGY > Vol. 138, N° 1 (02/2022) . - p. 16-27 Titre : Assessment of the UV inkjet ink penetration into laboratory papers within triticale pulp and its influence on print quality Type de document : texte imprimé Auteurs : Irena Bates, Auteur ; Ivana Plazonic, Auteur ; Katja Petric Maretic, Auteur ; Maja Rudolf, Auteur ; Valentina Radic Seles, Auteur Année de publication : 2022 Article en page(s) : p. 16-27 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Evaluation Impression jet d'encre Mesure Papier -- Coloration Pénétration (physique) Index. décimale : 620.197 Matériaux fibreux d'origine végétale et animale : textiles, papier Résumé : Today the print quality of digital printing techniques has improved and is considered satisfactory and competitive to analogue techniques for certain graphic products. Satisfactory print quality mostly depends on the interaction of ink and printing substrate where ink penetration has an important role. Namely, the ink penetration affects the parameters that describe the print quality together with visual appearance of print density and mottling. Therefore, it is important to select an adequate printing substrate for each printing technique. Awareness of environmental problems related to the shortage of wood raw materials has led to an increase in the use of recycled printing paper and in particular the implementation of new alternative sources of cellulose fibres instead of virgin wood fibres in the papermaking process. In this research the emphasis is precisely on defining the influence of ink penetration into laboratory papers made of triticale pulp on the final print quality. The laboratory printing papers were obtained by mixing triticale pulp with pulp from recycled fibres in three different portions. Papers were thereafter printed by ultraviolet (UV) inkjet printer and the ink penetration within laboratory papers with and without straw pulp was analysed using two methods of ink penetration analysis (microscopic/spectroscopic). The influence of ink penetration on the final print quality was observed and analysed based on several quality parameters (optical ink density, mottling and colorimetric values). These results confirmed that triticale pulp in laboratory papers provides equal print quality compared to laboratory papers made only from pulp from recycled fibres. Note de contenu : - EXPERIMENTAL : Laboratory papers - Printing of laboratory papers - Analysis - RESULTS AND DISCUSSION : Measurement of ink penetration depth - Assessment of print quality - Table 1 : Pulping conditions - Table 2 : Laboratory papers composition and some basic characteristics - Table 3 : Characteristics of the control sample (N)–Ink penetration depth (Hpm and Hps) and print quality parameters (mottling and optical ink density) - Table 4 : The Euclidean colour difference (ΔE00*) between printed reference laboratory paper without triticale pulp (N) and printed laboratory papers with triticale pulp (1NT, 2NT, 3NT) DOI : https://doi.org/10.1111/cote.12563 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12563 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37495 [article]

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Chemistry / Arunakumar N C / Saarbrücken [Germany] : Lambert Academic Publishing (2021) 

Titre : Chemistry : Leather dyes, fur dyes and paper dyes Type de document : texte imprimé Auteurs : Arunakumar N C, Auteur Editeur : Saarbrücken [Germany] : Lambert Academic Publishing Année de publication : 2021 Importance : 52 p. Présentation : ill. Format : 22 cm ISBN/ISSN/EAN : 978-620-4-73074-5 Prix : 43,90 E Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants Cuirs et peaux -- Teinture Fourrures -- Teinture Papier -- Coloration Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The rapid growth in the high-tech uses of dyes, particularly in ink-jet printing, is beginning to make an impact. Although the volumes of hi-tech dyes will remain small in comparison to dyes for traditional applications, the value will be signifi- cant because of the higher price of these specialized dyes.Leather is a very complex and heterogeneous substrate. Once the animal has been slaughtered, the hide or skin has to be removed, cleaned, depilated, and tanned in the so-called “beam house” process. The term “hide” is used for the outer covering of animals with a body surface area of more than 1 m2 like bovines, and the term “skin” for that of smaller animals like sheep, goats, and pigs. Large proportions of sheepskins are used for fur production. Note de contenu : - LEATHER DYES : Color selection - Aniline leather - Pigmented leather - Colour index - Natural and mordant dyes - Tanning agents - Dyewood - Synthetic mordant dyes - Basic dyes - Azine dyes - Other ctionic (basic) dyes - Acid dyes - Amphoteric dyes - Low-molecular azo dyes - Resorcinol azo dyes - Azo metal-complex dyes - Direct dyes s- Condensation dyes - Polyazo dyes - Phthalocyanine dyes - Sulfur dyes - Reactive dyes - Solvent dyes - Pigments - FUR DYES : Origin of fur - Animal rights - Fur hair and classification - Fur dressing - Fur finishing - The final stage - Garments and fashion - Lables - Fur dyeing : History and outlook - Color selection and colour index - Vegetable dyes - Oxidation bases - Disperse dyes - Acid and direct dyes - Metal-complex dyes - Other synthetic dyes - PAPER DYES : Classification of paper dyes - Direct dyes - Anionic direct dyes - Cationic direct dyes - Acid dyes - Cationic (basic) dyes - Sulfur dyes - Sulfur dyes - Organic pigments - Special requirements for paper dyes Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36815

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Chemistry : Leather dyes, fur dyes and paper dyes URL

Colour gamut of a press print and dependence of the basic attributes of overprint colours on the process ink film thickness / T. Dabrowa in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 89, B4 (12/2006)  

[article]  inSURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS > Vol. 89, B4 (12/2006) . - p. 305-314 Titre : Colour gamut of a press print and dependence of the basic attributes of overprint colours on the process ink film thickness Type de document : texte imprimé Auteurs : T. Dabrowa, Auteur ; M. Gajadhur, Auteur Année de publication : 2006 Article en page(s) : p. 305-314 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Couleur Encre Epaisseur -- Mesure Papier -- Coloration Index. décimale : 667.9 Revêtements et enduits Résumé : The dependence of lightness, hue and saturation changes of primary and secondary colours on the thickness of cyan, magneta, yellow and black process ink layers, as well as the space of colours that could be reproduced from those on a paper base, were determined. It was demonstrated, among others, that the volume of the solid body of reproducible colours, represented by a dodecahedron with vertices determined by the coordinates of the primary, secondary, black and white colours in the CIELAB space, increased with the increase of thickness of overprint ink film only to a certain maximum, after which a slow but steady decrease was observed. It was found that the maximum number of reproducible colours on a press print was obtained with the ink layer thickness of about 1.2µm. DOI : 10.1007/BF02765582 En ligne : https://link.springer.com/content/pdf/10.1007/BF02765582.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5271 [article]

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