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Creating colour / Gerd Koenig in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 194, N° 4475 (04/2004)
[article]
Titre : Creating colour Type de document : texte imprimé Auteurs : Gerd Koenig, Auteur Année de publication : 2004 Article en page(s) : p. 12-18 Langues : Anglais (eng) Catégories : Colorimétrie
Couleur
Molécules
Pigments
Structure moléculaireIndex. décimale : 535.6 Couleur Résumé : The path to colour starts from pigments which offer high fastness properties writes by the author. Note de contenu : - Colour: symbolic power and effect
- Colours and pigments
- A truly chance beginning
- Rubia tinctorium - the first targeted synthesis
- High performance pigments - from yesterday to today
- Quinacridones
- Copper phthalocyanines
- Vat dyes
- Dioxazines
- Disazo-condensation pigments
- Benzimidazolone azo pigments
- Diketopyrrolopyrroles
- Quinoxalindione azo
- FIGURES : 1. Structure of alizarin red - 2. The first artificially produced azo dyes - 3. Pigment violet 19 is the most important quinacridone - 4. The most important industrial copper phthalocyanines - 5. Isoindoline and isoindolinepigments range from green-yello orange and red - 6. DACP-HALS pigments are particularly suitable for colouring fibres - 7. Hostaperm Blue R5R VP 2548 is an imidazolone modified dioxazine pigment and exhibits excellent colour fastness.Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27761
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 194, N° 4475 (04/2004) . - p. 12-18[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000302 - Périodique Bibliothèque principale Documentaires Disponible Cultural and architectural heritage conservation and restoration : which colour ? / Marco Gaiani in COLORATION TECHNOLOGY, Vol. 137, N° 1 (02/2021)
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Titre : Cultural and architectural heritage conservation and restoration : which colour ? Type de document : texte imprimé Auteurs : Marco Gaiani, Auteur ; Fabrizio Ivan Apollonio, Auteur ; Andrea Ballabeni, Auteur Année de publication : 2021 Article en page(s) : p. 44-55 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 535.6 Couleur Résumé : Colours play a crucial role in the field of architectural heritage. Colour analysis and colour rendition are involved in several critical facets of heritage preservation, conservation and restoration. These aspects are related to accurate documentation and an accurate representation of heritage artefacts and architectural works. The aim of this paper is to describe critical issues and open problems of the processes involved in this field. Documentation is performed in multiple ways, acquiring heterogeneous data ranging from archival images, photographs, drawings using various consumer or professional instruments (eg, digital cameras and spectrophotometers). The reliability of colour acquisition might be influenced by instrumental reasons (the technology used to acquire colour information), by environmental changes (architectural heritage surveys are often performed outdoors), by morphology (complex architectural objects are characterised by concavities and convexities which complicate the reflection evaluation), or by materials (showing different reflection, porosity and transparency indexes). Identification of materials, such as colorants, pigments and dyes, is also a vital process in the heritage field. Colour information could be used as an
approach to the identification of materials, but these methods are still under development, and many issues need to be solved to achieve reliable results. Visualisation techniques of a heritage artefact also present the problem of the correctness of the colour representation. Several problems need to be faced in this context: the reliability of the acquisition, colour management of the rendering software, model complexity, and fragmentation of the devices upon which the model is visualised.Note de contenu : - ARCHITECTURAL HERITAGE AND "open air" ARCHAEOLOGY COLOUR DOCUMENTATION : The general problem - Colour documentation using instruments - Colour documentation using images - Colour appearance : identification and visualisation
- MATERIAL COLOUR IDENTIFICATION AND DECAY ANALYSIS USING COLOUR : The material colour and decay analysis general problem - The case of drawings : colour analyses - The case of metal-point identification in the Leonardo da Vinci drawings - The case of the use of multispectral analysis to support restorer activity
- THE TARGET-BASED "COLOUR CHARACTERISATION PROBLEM" : An overview - The target selection problem - Target use-related problems - The δE formula problem - The reference conditions problem to measure colour reproduction accuracy - The assumptions of the CIE system limit in the heritage field
- 3D MODEL COLOUR ACQUISITION, MANAGEMENT AND VISUALISATION PROBLEMS : Overview of the surface perception digital visualisation background - 3D model colour acquisition technique limits - 3D model colour management limits - The colour space selection problem - The BRDF representation and visualisation problem - The observer environment problemDOI : 10.1111/cote.12499 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12499 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35588
in COLORATION TECHNOLOGY > Vol. 137, N° 1 (02/2021) . - p. 44-55[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22843 - Périodique Bibliothèque principale Documentaires Disponible A cyanine-based dual-modal probe for fluorimetric detection of mercury ion and colorimetric sensing of pH / Yanjie Li in COLORATION TECHNOLOGY, Vol. 138, N° 4 (08/2022)
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Titre : A cyanine-based dual-modal probe for fluorimetric detection of mercury ion and colorimetric sensing of pH Type de document : texte imprimé Auteurs : Yanjie Li, Auteur ; Youguo Qi, Auteur ; Zhenxiang Xu, Auteur ; Yanxi Song, Auteur ; Hongqi Li, Auteur ; Jian Zhang, Auteur ; Junjie Tang, Auteur ; Jun Zhou, Auteur Année de publication : 2022 Article en page(s) : p. 427-439 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse spectrale
Colorimétrie
CyaninesLes cyanines sont le nom non systématique d'une famille de marqueurs synthétiques appartenant au groupe des polyméthines. Les cyanines ont de nombreuses utilisations comme marqueurs fluorescents, particulièrement en imagerie biomédicale. Selon la structure, elles couvrent un spectre allant de l'IR à l'UV.
Ions mercure
pH
Produits chimiques -- Détection
Sondes fluorescentesIndex. décimale : 535.6 Couleur Résumé : A fluorescent probe derived from cyanine-rhodanine conjugate was developed for dual detection of mercury (Hg2+) ion and pH. Addition of Hg2+ ion to the weakly fluorescent probe solution in dimethyl sulphoxide/water (DMSO/H2O, 7:3, v/v) induced discernible colour change and fluorescence enhancement while other metal cations including Li+, Na+, K+, Ag+, Cu2+, Fe2+, Zn2+, Co2+, Ni2+, Mn2+, Sr2+, Ca2+, Mg2+, Al3+, Cr3+ and Fe3+ did not cause obvious change in colour and fluorescence emission. The detection limit of the probe toward Hg2+ ion is 1.61 × 10−7 M. The probe also exhibited remarkable pH-responsive effect. It acts as a dual chromogenic and spectroscopic probe for determining different pH scales over a wide range of pH 1.0–14.0: bright yellow with maximum wavelength (λmax) 416 nm for pH 1.0–2.0, orange with λmax 470 nm for pH 3.0–9.0, and pale yellow with λmax below 400 nm for pH 10.0–14.0. Plausible sensing mechanisms of the probe toward Hg2+ ion and pH have been proposed. Note de contenu : - EXPERIMENTAL : Materials and instruments - Synthesis of probe CY - Measurements of absorption and fluorescence spectra
- RESULTS AND DISCUSSION : Preparation of probe CY - Sensing of mercury ions by probe CY - Sensing of pH by probe CY
- Table 1 : Performance comparison of fluorescent probes for the detection of mercury (Hg2+) ion
- Table 2 : Application of probe CY to determination of mercury (Hg2+) ion concentrations in different water samplesDOI : https://doi.org/10.1111/cote.12603 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12603 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37895
in COLORATION TECHNOLOGY > Vol. 138, N° 4 (08/2022) . - p. 427-439[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23520 - Périodique Bibliothèque principale Documentaires Disponible Ecole de printemps 2002. La couleur des matériaux / Conservatoire des ocres et pigments appliqués / Roussillon : Conservatoire des ocres et pigments appliqués (2002)
Titre : Ecole de printemps 2002. La couleur des matériaux : du 18 mars au 22 mars. Roussillon - Provence Type de document : texte imprimé Auteurs : Conservatoire des ocres et pigments appliqués, Editeur scientifique Editeur : Roussillon : Conservatoire des ocres et pigments appliqués Année de publication : 2002 Importance : Pagination multiple Présentation : ill. Format : 30 cm Langues : Français (fre) Catégories : Colorants
Colorants -- Chimie
Congrès et conférences
Couleur
Pigments
vision des couleursIndex. décimale : 535.6 Couleur Note de contenu : - INTRODUCTION AUX PRINCIPES GENERAUX DE LA PERCEPTION ET DE LA TERMINOLOGIE : Les fondements physiques de la couleur chimique - Les colorants naturels vus par un chimiste - La vision des couleurs, aspects neurophysiologiques et psychophysiques - Le Café des sciences : dialogue entre physiciens et chimistes, animés Jacques Lafait et Albert Chambonnet
- ASPECTS CHIMIQUES DE L'ORIGINE DE LA COULEUR : Les grandes familles de colorants naturels : synthèse historique - Les paramètres clefs de la couleur vus par un chimiste du solide - La couleur de la turquoise osseuse - Coloration des matériaux par absorption - Three organic purple dyes starting from historical point of view - Les colorants en peinture - L'avènement des colorants artificiels et synthétiques
- JOURNEE D'APPROCHE PRATIQUE ET CONCRETE DES MATERIAUX DE LA COULEUR : Couleurs à boire, couleurs à manger - Visite de l'usine de fruits confits Kerry Aptunion à Apt - Le conservatoire des ocres et pigments appliqués - Mini-ateliers pratiques de mise en oeuvre des couleurs et rencontres entre chercheurs et praticien : 1. Cuve de pourpre par fermentation - Chimie des émaux - Teintures végétales sur différents textiles - Fabrication de pigments végétaux et de laques - Techniques polychromes sur bois - Lumière et couleur
- APPLICATIONS DE DIFFERENTS SECREURS INDUSTRIELS : Propriétés anti-oxydantes de quelques colorants alimentaires - Décoration et pigments à effets spéciaux - La voie mévalonique - Les colorants en photographie : les colorants sensibilisateur et les colorants de l'image - La qualité des colorants naturels pour la teinture et la chimie des couleurs au XIXe sièclePermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2134 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 1164 535.6 ECO Colloque, congrès, etc. Bibliothèque principale Documentaires Disponible Effect of grey component replacement processing and varnishing on the light fastness of colours on cardboard prints / Tomislav Cigula in COLORATION TECHNOLOGY, Vol. 139, N° 1 (02/2023)
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Titre : Effect of grey component replacement processing and varnishing on the light fastness of colours on cardboard prints Type de document : texte imprimé Auteurs : Tomislav Cigula, Auteur ; Tamara Tomasegovic, Auteur ; Davor Donevski, Auteur ; Tomislav Hudika, Auteur Année de publication : 2023 Article en page(s) : p. 16-27 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Emballages
Fourier, Spectroscopie infrarouge à transformée de
Impression en couleur
Mesure
Papier et carton couché
Photostabilité
Réflexion totale atténuée
Résistance à l'abrasion
Solidité de la couleur
Vernis en phase aqueuseIndex. décimale : 535.6 Couleur Résumé : The visual appearance of packaging is one of its most important features. Electromagnetic irradiation causes a change in colour and often leads to colour fading (ie, to diminished visual appearance of a printed product). This research study aimed to determine the combined effect of grey component replacement image processing and varnishing on the protection of prints' appearance when exposed to accelerated ageing. For that purpose, two test charts were printed in a lithographic press and coated with water-based and ultraviolet-curable varnish before exposing them to xenon light. The prepared prints were evaluated by determining the tone values and colour difference, as well as the rub and abrasion resistance. In addition, Fourier Transform–infrared-attenuated total reflectance spectra were recorded to detect possible chemical changes caused by the (AcA). The results showed that the investigated period of (AcA) caused significant differences in the tone values of yellow, while the other primary colours proved to be more resistant. The water-based varnish provided better protection than the ultraviolet-curable varnish. The grey component replacement image processing diminished the colour difference caused by (AcA) on all the prepared print samples, and was particularly detected in tertiary colours containing the mid-range tone values of yellow (34%-68%). Both varnishes improved the rub resistance of aged prints, but only ultraviolet-curable varnish improved the abrasion resistance of both the unaged and the aged prints. In conclusion, applying varnish to prints ensured enhanced rub and abrasion resistance and diminished the colour change caused by (AcA). Finally, improved resistance to colour change was achieved by processing images with the grey component replacement method. Note de contenu : - EXPERIMENTAL : Materials and preparation of samples - Methods of measurement and analysis
- RESULTS AND DISCUSSION : TVs of process colours and colour difference of tertiary colours - Rub and abrasion resistance of the prints - FTIR-ATR spectroscopyDOI : https://doi.org/10.1111/cote.12630 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12630 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39202
in COLORATION TECHNOLOGY > Vol. 139, N° 1 (02/2023) . - p. 16-27[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24084 - Périodique Bibliothèque principale Documentaires Disponible PermalinkEnforcing Kubelka–Munk constraints for opaque paints / Paul Centore in COLORATION TECHNOLOGY, Vol. 136, N° 6 (12/2020)
PermalinkEnhanced surface quality measurement / Tony Burrows in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 202, N° 4577 (10/2012)
PermalinkEvaluation of the CIE colour rendering index / Cheng Li in COLORATION TECHNOLOGY, Vol. 127, N° 2 (2011)
PermalinkFormulation de couleur & colorimétrie / Alain Chrisment
PermalinkLa genèse des couleurs, un dialogue entre lumière et matière / Bernard Valeur in L'ACTUALITE CHIMIQUE, N° 396 (05/2015)
PermalinkGetting the perfect colour match in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 201, N° 4565 (10/2011)
PermalinkLe guide de la couleur N° 3 / Alain Chrisment / Paris : Editions 3C Conseil (2004)
PermalinkHow colour-deficient observers see things, or not / Reiner Eschbach in COLORATION TECHNOLOGY, Vol. 137, N° 1 (02/2021)
PermalinkPermalinkImmediate detection of Co2+ by a phthalazine-based colorimetric chemosensor / J. S. Heo in COLORATION TECHNOLOGY, Vol. 138, N° 2 (04/2022)
PermalinkIs CIELAB one space or many ? / Michael H. Brill in COLORATION TECHNOLOGY, Vol. 137, N° 1 (02/2021)
PermalinkIs it really possible to compensate for colour blindness with a filter ? / Eva M. Valero in COLORATION TECHNOLOGY, Vol. 137, N° 1 (02/2021)
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