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US 4,460,905 AGranted
Control valve for ink jet nozzles
AssigneeNCR Corporation
InventorJacob E. Thomas
Life of this patent
Estimating the term…
Abstract
The valve mechanism controls the flow of ink from a pressurized ink supply to a plurality of ink nozzles for printing bar codes. The mechanism includes a valve ball and a valve seat and an elastic diaphragm is positioned opposite the valve seat and is movable by action of a spring-loaded magnet armature to move the valve ball against the valve seat.
Claims18
A control system for an ink jet printer having a pressurized supply of ink for delivery to a plurality of aligned ink jet nozzles, comprising
- first conduit means connected with said ink supply for carrying ink therefrom,
- second conduit means having a resilient portion and directly connected with said first conduit means for carrying ink to said ink jet nozzles,
- valve means within the second conduit means and positioned at the confluence of said first and second conduit means for controlling the flow of ink therethrough, and
- means operably associated with the resilient portion for controlling said valve means for enabling droplets of ink to be ejected from said nozzles in response to operation of said valve means and printing on record media in dot matrix manner.
1 more element
An ink jet printer comprising
- pressurized supply of ink, a
- plurality of aligned ink jet nozzles, a
- first conduit connected with said ink supply for carrying ink therefrom, a
- second conduit having an elastic portion and directly connected with said first conduit and with said ink jet nozzles.
- valve means within said second conduit and positioned at the junction of the first and second conduits for controlling the flow of ink therepast, and
- control means operably associated with the elastic portion and controlling said valve means for opening and closing thereof to enable ink to flow to said nozzles in response to operation of said valve means for forming droplets of ink and printing bar codes on record media.
3 more elements
Dependencies are inferred from the claim text.