Recorders – Record receiver deforming
Patent
1987-01-13
1991-01-01
Hartary, Joseph W.
Recorders
Record receiver deforming
101366, 346140R, B41J 2175
Patent
active
049822004
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to the field of fluid jet printing devices and, more particularly, to an improved fluid supply system for fluid jet printing devices.
Usually, fluid jet printing devices have a refillable fluid tank connected via a supply duct to a fluid pump feeding the fluid under pressure to a controllable valve, which valve in turn is connected to a printer head. Jet nozzles arranged in the printer head generate fluid jets upon actuation of said controllable valve.
Different printing fluids, like ink, which are commercially available under different brands, have extremely different properties, so that only specific types of printing fluids can be used for specific fluid jet printing devices. The use of unsuitable printing or marking fluids for a particular fluid jet printing device will either result in bad printing quality or in a complete malfunction of the printing device. Another problem or prior art printing devices exists in that exposing the marking or printing fluid to light may cause a growth of algae in the fluid, if the fluid contains biologically active components, which is primarily the case when making use of water based marking fluid.
In view of this state of art, the present invention is based on the technical task of how to further optimise a fluid jet printing device of the above indicated kind, so as to prevent the use of printing fluid that is unsuitable for a fluid jet printing device and for preventing the printing fluid or marking fluid from being exposed to light.
This object is achieved by a fluid jet printing device of the above mentioned kind, wherein the fluid supply means comprises an interchangeable, pressure-tight essentially inflexible container which is filled with pressurising gas and which is detachably connected to a fluid inlet port of the fluid jet printing device, which fluid inlet port is connected to a pressure reducing valve supplying the fluid under essentially constant pressure independent of the fluid pressure at the inlet port, to a controllable valve, which in turn is connected to a printer head of the fluid jet printing device.
In accordance with the present invention, the refillable printing fluid tank and the fluid pump for feeding the fluid under pressure to the controllable valve are replaced by an interchangeable pressure-tight container, which is filled with a pressurising gas and with said printing fluid, which container has essentially the form of a spray dispenser of a "throw-away" type known per se in the art. Hence the fluid jet printing device in accordance with the present invention now only prevents the printing fluid from being exposed to light, so as to avoid a growth of algae in the fluid, but also allows an uncomplicated, compact design of a portable printer not requiring any pump for supplying the fluid under pressure to the controllable valve.
In addition, the cumbersome and dirty refilling procedure of the prior art device is now substituted by simply interchanging the empty container by a new one, which allows a clean, spill-free handling of the printing or marking fluid. Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawing.
The only FIGURE shows a sideview of a fluid jet printing device connected to a fluid container.
The fluid jet printing device comprises a printer head 1 having a plurality of jet nozzles 2a to 2g controlled by respective solenoid valves (not shown here) to apply dot patterns, together forming desired alpha-numeric characters on an information carrier 3, for example in the form of a sheet or package of goods. The solenoid valves controlling the jet nozzles 2a to 2g are connected to an electric control unit 4. The above arrangement of the printer head, the jet nozzles, the solenoid valves and the electric control unit is known per se in the art. A fluid source supplies the printing or marking fluid through a supply duct 5a to the printer head 1. The fluid source has the form of a pressure container 6 which is filled with pressur
REFERENCES:
patent: Re25692 (1964-12-01), Brown
patent: 3099211 (1963-07-01), Hilgoe
patent: 3572591 (1971-03-01), Brown
patent: 3756512 (1973-09-01), Dyal
patent: 3945021 (1976-03-01), Kraus
patent: 4089007 (1978-05-01), Perry
patent: 4204215 (1980-05-01), Nakarai
patent: 4346388 (1982-08-01), Wiley
patent: 4378564 (1983-03-01), Cross
patent: 4423429 (1983-12-01), Rosel
patent: 4453650 (1984-06-01), Witte
Umezawa, Patent Abstracts of Japan, vol. 7, No. 211, M-243, 1356, Sep. 17, 1983, Japanese Publication No. 58-107348 issued Jun. 27, 1983.
Hartary Joseph W.
Swedot System AB
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