METHOD OF PRINTING A DATA CARRYING MARK ON AN UNFINISHED CERAMIC STRUCTURE, AND STRUCTURES MARKED THEREBY

A method for printing a data-carrying mark on a portion of an unfinished ceramic structure, such as the green body of a ceramic honeycomb structure, is disclosed that is capable of producing a mark that maintains legibility even after being fired to temperatures above 1100oC or higher, or even 1300o...

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Bibliographische Detailangaben
Hauptverfasser:	JOHNSON, L. URDENIS, MCINTOSH, JOSEPH J
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVES ARTIFICIAL STONE BLASTING CEMENTS CERAMICS CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COLOUR PRINTING COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE CORRECTING FLUIDS CORRECTION OF TYPOGRAPHICAL ERRORS DYES ENGINE PLANTS IN GENERAL FILLING PASTES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME INKS LIGHTING LIME, MAGNESIA LINING MACHINES MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES PRINTING PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES REFRACTORIES SELECTIVE PRINTING MECHANISMS SLAG STAMPS STEAM ENGINES TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TRANSPORTING TREATMENT OF NATURAL STONE TYPEWRITERS USE OF MATERIALS THEREFOR WEAPONS WOODSTAINS
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Beschreibung
Zusammenfassung:	A method for printing a data-carrying mark on a portion of an unfinished ceramic structure, such as the green body of a ceramic honeycomb structure, is disclosed that is capable of producing a mark that maintains legibility even after being fired to temperatures above 1100oC or higher, or even 1300oC or higher. The data-carrying mark is formed from a deposit of colorant solids overlying a portion of the unfinished ceramic structure. The volume of colorant solids per unit area of marked wall portion that is at least twice as much as that required to obtain maximum pre-fired visual contrast between marked and unmarked portions of the structure (i.e., prior to firing). The colorant solids may include one or more of cobalt, nickel, iron, chromium, copper, manganese and titanium, either in metallic or oxide form, and are preferably deposited in particulate form via a high temperature ink composition that prints the data-carrying mark by way of an ink jet print head. The data-carrying mark may be a digital pattern of marked and unmarked wall portions such as a bar code. L'invention concerne un procédé d'impression d'une marque comportant des données sur une partie d'une structure céramique non finie, telle que l'ébauche crue d'une structure céramique alvéolaire. Le procédé selon l'invention permet de produire une marque qui conserve sa lisibilité même après avoir été cuite à des températures supérieures à 1100oC ou supérieures ou même à 1300oC ou supérieures. La marque comportant des données est formée à partir d'un dépôt de matières solides colorantes sur une partie de la structure céramique non finie. Le volume de matières solides colorantes par unité de surface de la partie paroi marquée est au moins deux fois équivalent à ce qui est requis pour obtenir un contraste visuel pré-cuisson maximal entre des parties marquées et non marquées de la structure. Les matières solides colorantes peuvent contenir au moins du cobalt, du nickel, du fer, du chrome, du cuivre, du manganèse ou du titane, sous forme métallique ou sous forme d'oxyde, et elles sont de préférence déposées sous forme particulaire dans une composition d'encre haute température qui imprime la marque comportant des données au moyen d'une tête d'impression par jet d'encre. La marque comportant des données peut être un motif numérique de parties parois marquées et non marquées, tel qu'un code à barres.