ISSN online 2612-4882
ISSN print 2612-4408

Press Register No. 3/19, Court of Forlì
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M. Cannioa, D.N. Boccaccinib, R. Taurinod, V. Rivac, M.L. Gualtieria, M. Tognettie, M. Hanuskovaa, M. Cicconif, T. Feyf, M. Rosag, V. Novaresioh, P. Petacciah, M. Romagnolia, A.R. Boccaccinii
aDipartimento di Ingegneria Enzo Ferrari, Università di Modena e Reggio Emilia, Italy
bTecnoitalia S.r.l., Sassuolo - MO, Italy
cMetco S.r.l., Fiorano Modenese - MO, Italy
dDipartimento di Ingegneria e Architettura, Università di Parma, Italy
eDaxel S.r.l., Rubiera RE, Italy
fInstitute of Glass and Ceramics, Dept of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
gTechnical University of Denmark, Dept of Energy Conversion and Storage, Roskilde, Denmark
hAllovis Engineering Services, Torino, Italy
iInstitute of Biomaterials, Dept of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany


The outstanding versatility shown by Inkjet printing has turned it into a leading technology in several industrial manufacturing fields of which ceramic tile decoration is a good example. Several papers in literature have set the rheological and fluid dynamics characteristic of the inks and the process parameters required for an optimum ink deposition for ceramic tile decoration. However, there is a lack of studies investigating the conditions for the deposition of glass-ceramic glazes. The glazes considered in the present study are intended for digital injection devices using printheads working in the Drop On Demand (DOD) mode based on piezoelectric elements or other digital injection techniques such as continuous ink jet (CIJ), electrovalves, pistons or others. The purpose of this work is to study experimentally the influence of chemical composition and mineralogy acting on the jettability of a range of glass-ceramic glazes. Relevant parameters like viscosity, surface tension and process parameters such as applied pressure, are discussed on the basis of fluid mechanics parameters and printing diagrams. The specific characteristics of digital glaze deposition technologies (continuous jetting and drop on demand) are discussed and the remaining challenges for future applications of the technology are outlined.
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