Inkjet printer which deposits at least two fluids on a substrate such that the fluids react chemically to form a product thereon

A patterned product 8 is deposited directly onto a substrate 7 by a pair of inkjet printheads 1,2 which apply at least two fluids 3,4 which react chemically to form the product with properties differing from the fluids. The droplets may coincide during flight at 5 to form mixed droplets 6 which cont...

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Hauptverfasser: WILLIAM NORMAN DAMARELL, DANIEL ROBERT JOHNSON, ANTHONY WILLIAM NIGEL KYNASTON-PEARSON
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creator WILLIAM NORMAN DAMARELL
DANIEL ROBERT JOHNSON
ANTHONY WILLIAM NIGEL KYNASTON-PEARSON
description A patterned product 8 is deposited directly onto a substrate 7 by a pair of inkjet printheads 1,2 which apply at least two fluids 3,4 which react chemically to form the product with properties differing from the fluids. The droplets may coincide during flight at 5 to form mixed droplets 6 which continue onwards towards the substrate. Alternatively, a pair of inkjet printheads may eject droplets (11,12,Fig.2) such that their point of coincidence (13) is at the substrate (14). The materials may also be deposited from multiple inkjet heads to prepare a wide range of reaction scenarios in the form of user-defined patterns which may be sequences of differing layers and possibly to build up thicker layers. A PCB may be printed by printing a metal salt and a reducing agent directly, instead of two colours from a conventional inkjet printer. To print a three-dimensional article, a pair of fluids which react to give a precipitate can be used instead. Repeated passes can then build up a desired shape. The two processes may be combined to produce composite devices such as electrical components. A wide variety of fluids may be used, for example fluids suitable for electroless deposition, or fluids selected such that the reaction yields a ceramic precipitate.
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The droplets may coincide during flight at 5 to form mixed droplets 6 which continue onwards towards the substrate. Alternatively, a pair of inkjet printheads may eject droplets (11,12,Fig.2) such that their point of coincidence (13) is at the substrate (14). The materials may also be deposited from multiple inkjet heads to prepare a wide range of reaction scenarios in the form of user-defined patterns which may be sequences of differing layers and possibly to build up thicker layers. A PCB may be printed by printing a metal salt and a reducing agent directly, instead of two colours from a conventional inkjet printer. To print a three-dimensional article, a pair of fluids which react to give a precipitate can be used instead. Repeated passes can then build up a desired shape. The two processes may be combined to produce composite devices such as electrical components. 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subjects APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL
APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS
CHEMICAL SURFACE TREATMENT
CHEMISTRY
COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
COATING MATERIAL WITH METALLIC MATERIAL
COATING METALLIC MATERIAL
COLOUR PRINTING
CORRECTION OF TYPOGRAPHICAL ERRORS
DIFFUSION TREATMENT OF METALLIC MATERIAL
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME
INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL
LINING MACHINES
MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
METALLURGY
PERFORMING OPERATIONS
PRINTED CIRCUITS
PRINTING
PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES
PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL
SELECTIVE PRINTING MECHANISMS
SPRAYING OR ATOMISING IN GENERAL
STAMPS
SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
TRANSPORTING
TYPEWRITERS
title Inkjet printer which deposits at least two fluids on a substrate such that the fluids react chemically to form a product thereon
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