EP0260929A1
Expired / Lapsed
EP
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Fluid jet marking apparatus
Assignee: Domino Printing Sciences PLC
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Filing: 1987-09-15
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Granted: —
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Expires: 2007-09-15
Abstract
Abstract A fluid jet marking apparatus comprises a housing (5) defining a chamber (6) for marking fluid. A plurality of outlet nozzles (8) allow ink to be ejected from the chamber and a corresponding plurality of closure elements (9) are selectively displaceable to open and close the nozzles. Springs (11) bias the elements to close the nozzles. A plurality of solenoids (14) are each connected to a respective closure element by means of a pulling element (12) slidable, under the action of the solenoid, in a respective tube (13,13ʹ) connecting the solenoid to the housing. A fluid supply (23) supplies fluid to the chamber and at least one liquid constituent part of the fluid is supplied to the chamber through the respective tubes (13ʹ) on which the solenoids are mounted.
Inventors
- 👤 Ian Michael Fost
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 09:47
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/17; B41J2/20; B41J2/175
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
128 words
A fluid jet marking apparatus comprising a housing (5) defining a chamber (6) for marking fluid; a plurality of outlet nozzles (8) from the chamber; a corresponding plurality of closure elements (9) selectively displaceable to open and close the nozzles; resilient means (11) biasing the elements to close the nozzles; a plurality of solenoids (14) each connected to a respective closure element by means of a pulling element (12) slidable, under the action of the solenoid, in a tube (13,13ʹ) connecting the solenoid to the housing; and a fluid supply (23) supplying fluid to the chamber, is characterized in that means (22) is provided for supplying at least one liquid constituent part of the fluid to the chamber through the respective tubes on which the solenoids are mounted.
Claim 2
Dependent Claim
128 words
A fluid jet marking apparatus comprising a housing (5) defining a chamber (6) for marking fluid; a plurality of outlet nozzles (8) from the chamber; a corresponding plurality of closure elements (9) selectively displaceable to open and close the nozzles; resilient means (11) biasing the elements to close the nozzles; a plurality of solenoids (14) each connected to a respective closure element by means of a pulling element (12) slidable, under the action of the solenoid, in a tube (13,13ʹ) connecting the solenoid to the housing; and a fluid supply (23) supplying fluid to the chamber, is characterized in that means (22) is provided for supplying at least one liquid constituent part of the fluid to the chamber through the respective tubes on which the solenoids are mounted.
Claim 3
Dependent Claim
29 words
A fluid jet marking apparatus according to claim 1, wherein the supply path through the solenoid mounting tubes constitutes the sole means of supply of fluid to the chamber.
Claim 4
Dependent Claim
56 words
A fluid jet marking apparatus according to claim 1, the apparatus being arranged and constructed to use as the marking fluid an ink which includes an ink solvent component, wherein ink is supplied directly to the chamber (6) fr om the ink supply (23) and ink solvent is suppliedto the chamber through the solenoid mounting tubes(13ʹ).
Claim 5
Dependent Claim
64 words
A fluid jet marking apparatus according to claim 3, wherein the supply of fluid through the solenoids and tubes is from a manifold (23) into which supplies of both solvent and ink are controllably fed, so that on shut-down, the supply of ink to the manifold can be shut off allowing solvent for flushing to be fed through the apparatus to flush the system.
Claim 6
Independent Claim
128 words
A method of operating a fluid jet marking apparatus which comprises a housing (5) defining a chamber (6) for marking fluid; a plurality of outlet nozzles (8) from the chamber; a corresponding plurality of closure elements (9) selectively displaceable to open and close the nozzles; resilient means (11) biasing the elements to close the nozzles; a plurality of solenoids (14) each connected to a respective closure element by means of a pulling element (12) slidable, under the action of the solenoid, in a tube (13,13ʹ) connecting the solenoid to the housing; and a fluid supply (23) supplying fluid to the chamber, the method comprising supplying at least one liquid constituent part of the fluid to the chamber through the respective tubes (13ʹ) on which the solenoids are mounted.
Claim 7
Independent Claim
128 words
A method of operating a fluid jet marking apparatus which comprises a housing (5) defining a chamber (6) for marking fluid; a plurality of outlet nozzles (8) from the chamber; a corresponding plurality of closure elements (9) selectively displaceable to open and close the nozzles; resilient means (11) biasing the elements to close the nozzles; a plurality of solenoids (14) each connected to a respective closure element by means of a pulling element (12) slidable, under the action of the solenoid, in a tube (13,13ʹ) connecting the solenoid to the housing; and a fluid supply (23) supplying fluid to the chamber, the method comprising supplying at least one liquid constituent part of the fluid to the chamber through the respective tubes (13ʹ) on which the solenoids are mounted.
Claim 8
Dependent Claim
19 words
A method according to claim 5, wherein fluid is supplied to the chamber solely through the solenoid mounting tubes.
Claim 9
Dependent Claim
48 words
A method according to claim 5, wherein the marking fluid is an ink which includes an ink solvent component, and wherein the ink is supplied directly to the chamber (6) from the ink supply (23) and solvent is supplied to the chamber through the solenoid mounting tubes (13ʹ).
Claim 10
Dependent Claim
55 words
A method according to claim 7, wherein the supply of fluid through the solenoids and tubes is from a manifold (23) into which supplies of both solvent and ink are controllably fed, and, on shut-down, the supply of ink to the manifold is shut off and solvent fed through the apparatus to flush the system.
References Cited (Backward Citations)
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