EP 0097134 A1 19831228 - Photo-electrostatic method for glaze-decorating ceramic tiles, machine therefor, and end product obtained therefrom.
Title (en)
Photo-electrostatic method for glaze-decorating ceramic tiles, machine therefor, and end product obtained therefrom.
Title (de)
Photo-elektrostatisches Verfahren und Vorrichtung zum Glasieren keramischer Fliesen und Fertigfabrikat hiermit erzeugt.
Title (fr)
Procédé et dispositif photo-électrostatique pour décorer des carreaux en céramique et produit ainsi obtenu.
Publication
Application
Priority
- IT 4005283 A 19830527
- IT 4007482 A 19820615
Abstract (en)
The method disclosed is one of transferring the image from a transparency (13 or 111) - this either caused to reciprocate through a horizontal and longitudinal path, or revolve continuously - onto a tile (2) travelling below, synchronised in its movement with that of the transparency; provision being made between transparency and tile for a conductive rotating cylinder (46) having a selenium outer surface (48), which, in conjunction with a lamp (15 or 113) and optic fibres (42) transferring the image line by line onto its top-most surface area, holds the latter by virtue of a positive charge induced by 'corona' stress into the dark areas of said image, bringing it round to a first point of convergence (S) between cylinder (46) aforesaid and a feed-cylinder (62) where negative-charged dry glaze particles (59) are offered by the latter to said dark areas; there being a second point of convergence (S min ) envisaged diametrically opposite on said cylinder (46) to the optic fibres, where this dusting of dry glaze (59) is transferred onto the positively-charged top surface of the tile (2) to be decorated, this having been moistened beforehand, and given a base-coat of neutral glaze incorporating a bonding-agent which will fix the decorative pattern thus 'copied' - the finished glaze being subsequently protected by application of a frit.
IPC 1-7
IPC 8 full level
B28B 11/04 (2006.01); G03G 15/16 (2006.01)
CPC (source: EP)
B28B 11/044 (2013.01); G03G 15/1625 (2013.01)
Citation (search report)
- [Y] US 3917881 A 19751104 - STEVKO PHILIP J
- [Y] GB 658699 A 19511010 - BATTELLE MEMORIAL INSTITUTE
- [Y] GB 1444368 A 19760728 - ICI LTD
- [A] US 4187774 A 19800212 - IWASA MASAKAZU [JP], et al
- [A] BE 883252 A 19801113 - NESELCO AS
- [A] FR 1526998 A 19680531
- [A] GB 892611 A 19620328 - MASON & SONS LTD E N
Designated contracting state (EPC)
AT CH DE FR GB IT LI
DOCDB simple family (publication)
EP 0097134 A1 19831228; EP 0097134 B1 19861008; DE 3366755 D1 19861113; ES 523297 A0 19850501; ES 8504557 A1 19850501
DOCDB simple family (application)
EP 83830121 A 19830614; DE 3366755 T 19830614; ES 523297 A 19830615