US3296624A - Arrangement for feeding ink into the output nozzle of a writing instrument - Google Patents
Arrangement for feeding ink into the output nozzle of a writing instrument Download PDFInfo
- Publication number
- US3296624A US3296624A US413455A US41345564A US3296624A US 3296624 A US3296624 A US 3296624A US 413455 A US413455 A US 413455A US 41345564 A US41345564 A US 41345564A US 3296624 A US3296624 A US 3296624A
- Authority
- US
- United States
- Prior art keywords
- nozzle
- piston
- ink
- cylinder
- container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D15/00—Component parts of recorders for measuring arrangements not specially adapted for a specific variable
- G01D15/16—Recording elements transferring recording material, e.g. ink, to the recording surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D15/00—Component parts of recorders for measuring arrangements not specially adapted for a specific variable
- G01D15/16—Recording elements transferring recording material, e.g. ink, to the recording surface
- G01D15/18—Nozzles emitting recording material
Definitions
- FIG. 31.1 ARRANGEMENT FOR FEEDING INK INTO THE OUTPUT- NOZZLE Filed Nov. 24, 1964 FIG. 31.1
- any fortuitous flow of ink risks dirtying the outer surface of the nozzle and consequently completely modifying the shape of the ink meniscus which changes in its turn the features of the ink projecting means and may even make them unfit for use as long as a complete cleaning which is quite an intricate operation has not been performed.
- the present invention has for its object to remove such drawbacks and it covers an arrangement for feeding ink into the output nozzle of a writing instrument to produce a jet' of ink by means of an electrostatic field, said arrangement including an ink container connected through a pipe with said nozzle while, according to the invention, there is inserted an electrically controlled pump between the nozzle and ink container, which pump is designed so as to ensure, under the action of an electric control system, the setting under a predetermined'pressure of the ink feeding the nozzle.
- FIG. 1 is a diagrammatic illustration of a first em bodiment, i
- FIG. 2 illustrates the second'embodi'rnent.
- FIGS. 3a, 3b and 3c illustrate, on a much larger scale, the end of an ink output nozzle for different conditions of operation.
- FIG. 4 is a graph showing the operation of the pump.
- a container 1 carrying a volume of ink 2 is connected through a pipe 3 with a pump 4 and thence with a further pipe 5 opening into the ink output nozzle 6.
- the pump 4 is constituted by a glass cylinder 7 inserted in a main body 8 made of insulating material, said main body 8 being provided at each end with a threaded section adapted to receive the connecting members 9 and 10.
- the connecting member 9 is rigid with an extension 11 entering the glass cylinder 7, which extension is furthermore provided with a channel 12 opening into the pipe 5.
- the connecting member 10 is also provided with 3,296,624 Patented Jan. 3,. 1 967 an inner channel 13 connected with the pipe 3' fed by the container.
- the main body 8 made of insulating material serves as asupport for an outer winding 15 which, when it is energized by an electric current, produces a magnetic field exerting on the piston a force urging it upwardly.
- Said movement of the piston 14 produces of course an increase in the pressure of the mass of ink filling the space between said piston and the nozzle 6 and this increase in pressure is chiefly defined by the electromagnetic force exerted on the piston, by the weight of the latter and by the clearance provided between the piston and the wall of the glass tube 7.
- the flow of ink out of the nozzle 6 should stop at the latest at the movement at which the piston 14' reaches the extension 11 forming a stop for it.
- the piston has a diameter of a magnitude of 7 mm. with a stroke of 5 mm., the duration of its complete travel is sufilcient for the writing of about 200 written symbols of a conventional size without any stopping. Since it is an easy matter to synchronize the energization of the winding 15 with the control of the electrostatic field which is to urge ink out of the nozzle 6, the result is that at each interruption of the electrostatic field, the magnetic field is also cut off, which allows the piston 14 to then execute a fraction or the totality of its downward stroke under the action of gravity.
- FIG. 4 is a graph showing the force of electromagnetic attraction exerted by the winding 15 on the piston 14 as a function of the position of said' piston.
- the shifting X of: the piston is given out on the abscissae and the force F on the ordinates.
- the starting point 0 of the graph corresponds to the position of the piston 14 at a point registering with the. middle point of the winding 15, which position cannot be actually reached in practice by reason of the presence of the extension 11 which acts as astop.
- the curve illustrating the force of magnetic attraction exerted onthe piston shows. a substantially hori; ⁇ l/
- the pump 4 is arranged vertically so as to reduce tothe utmost the lateral friction which might arise between the piston 14 and the glass tube 7.
- the current energizing the pump 4 is adjusted to a value such that the magnetic force attracting the piston 14 may be equal to twice the weight of the latter.
- the force produced during the upward stroke of the piston is equal to the force of gravity ensuring its downwardmovement.
- the increase and reduction in pressure applied to the ink in the nozzle 6 with reference to static pressure are of equal magnitudes.
- FIGS. 3a, 3b and 3c illustrate cross-sectionally on a larger scalethe end of the nozzle 6 with ink therein for dilferent pressures exerted on the ink.
- FIG. 3w shows that under inoperative conditions the surface 16 of ink at the output end of the nozzle 6 is substantially flat.
- FIG. 3b shows that said surface 6 is transformed into a convex meniscus during the upward movement of the piston 14 and lastly FIG. 30 showssaid meniscus. during the transformation-into a concave meniscus of thesame curvature during the downward movement of the piston 14. It should be remembered that the modifications in pressure produced by the pump 4 do not lead to any flow of ink out of the nozzle except in the case of FIG. 3b when a sufiicient electrostatic field is generated across the end of the nozzle 6.
- FIG. 2 illustrates a modification wherein, as in the case of FIG. 1, the nozzle 6 is arranged substantially at the same level as the ink 2 in the container 1.
- the bottom of the container 1 forms a body 17 outwardly carrying a winding 18 surrounded in its turn by a permanent magnet 19.
- a glass tube 20 carrying a piston 21 is arranged inside the body 17; the piston 21 is provided at each end which stops as shown at 22 and 23 respectively and it slides as precedingly with a clearance inside the glass tube 20.
- the ink carried in the container 1 reaches the upper surface of the piston 21 through a channel 23 whereas the ink lying underneath the piston 21 inthe lower section of the tube 20 may reach the nozzle 6 through the agency of a yielding pipe 25.
- the action of the magnet 19 on the piston 21 is sufficient for returning the latter into its upper inoperative position.
- the winding-energizing current is adjusted to a value allowing compensating almost exactly the action of the permanent magnetic field.
- the piston 21 moves downwardly under the action of gravity.
- the electrostatic field which is to produce a jet of ink out of its nozzle 6 is out 01f, the energization of the winding 18 is switched off and the field produced by the permanent magnet 19 urges the piston 21 upwardly.
- the adjustment of the pressure required for operation may be readily executed either through a modification in the energizing current or through a modification in the level of ink in the container with reference to the nozzle 6.
- a writing instrument the combination of an ink container, an output nozzle, a connection between said container and said nozzle, a pump including a cylinder inserted longitudinally in said connection, the ends of said cylinder communicating respectively with the nozzle and with the container, and a piston of magnetic material adapted to be shifted inside said cylinder with a substantial clearance with reference theretobetween a first position nearer the container end of the cylinder and a second position nearer the nozzle end of the cylinder, the pressure of said pump being of a value sufiicient to form a miniscus at the outer end of said nozzle but insufiicient to burst said miniscus, means urging the piston towards its first position and means adapted to transiently produce a magnetic field urging the piston into its second position,
- a pump including a cylinder inserted longitudinally in said connection, the ends of said cylinder communicating respectively with the nozzle and with the container, and a piston of magnetic material adapted to be shifted inside said cylinder between a first position near the container end of the cylinder and a second position nearer the nozzle end of the cylinder, the pressure of said pump being of a value sufiicient to form a miniscus at the outer end of said nozzle but insufficient to burst said miniscus, stops of a reduced area through which the movement of the piston inside the cylinder is limited in both directions, means urging the piston towards its first position and means adapted to produce transiently a magnetic field urging the piston into its second position, the flow of ink out of said nozzle only occurring when a sufficient electrostatic field is
- a writing instrument the combination of an ink container, an output nozzle, a connection between said container and said nozzle, a pump including a cylinder inserted longitudinally in said connection, the ends of said cylinder communicating respectively with the nozzle and with the container, and a piston of magnetic material adapted to be shifted inside said cylinder between a first position nearer the container end of the cylinder and a second position nearer the nozzle end of the cylinder, the pressure of said pump being of a value suflicient to form a miniscus at the outer end of said nozzle but insufiicient to burst said miniscus, a permanent magnet generating a magnetic field urging the piston into its first position and an electric winding coaxial with the cylinder and adapted when energized to produce a magnetic field predominating over the field of the magnet to allow a return movement of the piston into its second position, the flow of ink out of said nozzle only occurring when a sufficient electrostatic field is generated across the end thereof.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE656425D BE656425A (ja) | 1964-06-03 | 1964-11-30 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1543663A CH397729A (de) | 1963-12-17 | 1963-12-17 | Dispositif pour l'alimentation en encre de la buse d'émission d'un dispositif d'écriture |
Publications (1)
Publication Number | Publication Date |
---|---|
US3296624A true US3296624A (en) | 1967-01-03 |
Family
ID=4409081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US413455A Expired - Lifetime US3296624A (en) | 1963-12-17 | 1964-11-24 | Arrangement for feeding ink into the output nozzle of a writing instrument |
Country Status (10)
Country | Link |
---|---|
US (1) | US3296624A (ja) |
AT (1) | AT265325B (ja) |
BE (1) | BE655638A (ja) |
CH (1) | CH397729A (ja) |
DE (1) | DE1252424B (ja) |
ES (1) | ES304813A1 (ja) |
FR (1) | FR1413847A (ja) |
GB (1) | GB1025379A (ja) |
NL (1) | NL6412400A (ja) |
SE (1) | SE322063B (ja) |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3653596A (en) * | 1970-01-13 | 1972-04-04 | Carco Inc | Marking device |
US3750564A (en) * | 1971-02-05 | 1973-08-07 | Olympia Werke Ag | Electrostatic capillary apparatus for producing an imprint |
US3787882A (en) * | 1972-09-25 | 1974-01-22 | Ibm | Servo control of ink jet pump |
US3886565A (en) * | 1974-05-09 | 1975-05-27 | Tokyo Shibaura Electric Co | Injection nozzle for an ink jet printer |
US3950761A (en) * | 1973-01-04 | 1976-04-13 | Casio Computer Co., Ltd. | Ink pressurizing apparatus for an ink jet recorder |
US3961337A (en) * | 1974-08-26 | 1976-06-01 | Teletype Corporation | Disposable ink supply and nozzle system using a simple pump |
US4152710A (en) * | 1977-10-06 | 1979-05-01 | Nippon Telegraph & Telephone Public Corporation | Ink liquid supply system for an ink jet system printer |
US4549189A (en) * | 1982-06-04 | 1985-10-22 | Fuji Xerox Co., Ltd. | Thermal printing head |
US4920362A (en) * | 1988-12-16 | 1990-04-24 | Hewlett-Packard Company | Volumetrically efficient ink jet pen capable of extreme altitude and temperature excursions |
US4961076A (en) * | 1987-10-28 | 1990-10-02 | Hewlett-Packard Company | Reliability improvement for ink jet pens |
US4992802A (en) * | 1988-12-22 | 1991-02-12 | Hewlett-Packard Company | Method and apparatus for extending the environmental operating range of an ink jet print cartridge |
US4994824A (en) * | 1988-12-16 | 1991-02-19 | Hewlett-Packard Company | Modal ink jet printing system |
US5040002A (en) * | 1990-03-16 | 1991-08-13 | Hewlett-Packard Company | Regulator for ink-jet pens |
US5039999A (en) * | 1990-06-26 | 1991-08-13 | Hewlett-Packard Company | Accumulator and pressure control for ink-ket pens |
US5047790A (en) * | 1990-01-12 | 1991-09-10 | Hewlett-Packard Company | Controlled capillary ink containment for ink-jet pens |
US5526030A (en) * | 1992-10-05 | 1996-06-11 | Hewlett-Packard Company | Pressure control apparatus for an ink pen |
US5537134A (en) * | 1990-01-12 | 1996-07-16 | Hewlett-Packard Company | Refill method for ink-jet print cartridge |
US5606988A (en) * | 1994-02-04 | 1997-03-04 | Hewlett -Packard Company | Connector assembly for ink cartridge |
US5646666A (en) * | 1992-04-24 | 1997-07-08 | Hewlett-Packard Company | Back pressure control in ink-jet printing |
US5751300A (en) * | 1994-02-04 | 1998-05-12 | Hewlett-Packard Company | Ink delivery system for a printer |
US5917523A (en) * | 1990-01-12 | 1999-06-29 | Hewlett-Packard Company | Refill method for ink-jet print cartridge |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1350836A (en) * | 1970-06-29 | 1974-04-24 | Kyser E L | Method and apparatus for recording with writing fluids and drop projection means therefor |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US458873A (en) * | 1891-09-01 | Poele | ||
GB554308A (en) * | 1941-12-22 | 1943-06-29 | Arnold Parker Hill | Improvements in and relating to the inking mechanism of electrical recording apparatus |
US2604851A (en) * | 1948-12-23 | 1952-07-29 | Standard Oil Dev Co | Glass sampling pump |
US3169821A (en) * | 1963-11-20 | 1965-02-16 | Hewlett Packard Co | Fluid pressure controller |
-
0
- DE DENDAT1252424D patent/DE1252424B/de active Pending
-
1963
- 1963-12-17 CH CH1543663A patent/CH397729A/de unknown
-
1964
- 1964-01-23 AT AT54364A patent/AT265325B/de active
- 1964-10-09 ES ES304813A patent/ES304813A1/es not_active Expired
- 1964-10-23 NL NL6412400A patent/NL6412400A/xx unknown
- 1964-11-12 BE BE655638A patent/BE655638A/xx unknown
- 1964-11-16 GB GB46488/64A patent/GB1025379A/en not_active Expired
- 1964-11-23 FR FR995904A patent/FR1413847A/fr not_active Expired
- 1964-11-24 US US413455A patent/US3296624A/en not_active Expired - Lifetime
- 1964-12-16 SE SE15215/65A patent/SE322063B/xx unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US458873A (en) * | 1891-09-01 | Poele | ||
GB554308A (en) * | 1941-12-22 | 1943-06-29 | Arnold Parker Hill | Improvements in and relating to the inking mechanism of electrical recording apparatus |
US2604851A (en) * | 1948-12-23 | 1952-07-29 | Standard Oil Dev Co | Glass sampling pump |
US3169821A (en) * | 1963-11-20 | 1965-02-16 | Hewlett Packard Co | Fluid pressure controller |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3653596A (en) * | 1970-01-13 | 1972-04-04 | Carco Inc | Marking device |
US3750564A (en) * | 1971-02-05 | 1973-08-07 | Olympia Werke Ag | Electrostatic capillary apparatus for producing an imprint |
US3787882A (en) * | 1972-09-25 | 1974-01-22 | Ibm | Servo control of ink jet pump |
US3950761A (en) * | 1973-01-04 | 1976-04-13 | Casio Computer Co., Ltd. | Ink pressurizing apparatus for an ink jet recorder |
US3886565A (en) * | 1974-05-09 | 1975-05-27 | Tokyo Shibaura Electric Co | Injection nozzle for an ink jet printer |
US3961337A (en) * | 1974-08-26 | 1976-06-01 | Teletype Corporation | Disposable ink supply and nozzle system using a simple pump |
US4152710A (en) * | 1977-10-06 | 1979-05-01 | Nippon Telegraph & Telephone Public Corporation | Ink liquid supply system for an ink jet system printer |
US4549189A (en) * | 1982-06-04 | 1985-10-22 | Fuji Xerox Co., Ltd. | Thermal printing head |
US4961076A (en) * | 1987-10-28 | 1990-10-02 | Hewlett-Packard Company | Reliability improvement for ink jet pens |
US4994824A (en) * | 1988-12-16 | 1991-02-19 | Hewlett-Packard Company | Modal ink jet printing system |
US4920362A (en) * | 1988-12-16 | 1990-04-24 | Hewlett-Packard Company | Volumetrically efficient ink jet pen capable of extreme altitude and temperature excursions |
US4992802A (en) * | 1988-12-22 | 1991-02-12 | Hewlett-Packard Company | Method and apparatus for extending the environmental operating range of an ink jet print cartridge |
US5047790A (en) * | 1990-01-12 | 1991-09-10 | Hewlett-Packard Company | Controlled capillary ink containment for ink-jet pens |
US5537134A (en) * | 1990-01-12 | 1996-07-16 | Hewlett-Packard Company | Refill method for ink-jet print cartridge |
US5917523A (en) * | 1990-01-12 | 1999-06-29 | Hewlett-Packard Company | Refill method for ink-jet print cartridge |
US5040002A (en) * | 1990-03-16 | 1991-08-13 | Hewlett-Packard Company | Regulator for ink-jet pens |
US5039999A (en) * | 1990-06-26 | 1991-08-13 | Hewlett-Packard Company | Accumulator and pressure control for ink-ket pens |
US5646666A (en) * | 1992-04-24 | 1997-07-08 | Hewlett-Packard Company | Back pressure control in ink-jet printing |
US5526030A (en) * | 1992-10-05 | 1996-06-11 | Hewlett-Packard Company | Pressure control apparatus for an ink pen |
US5606988A (en) * | 1994-02-04 | 1997-03-04 | Hewlett -Packard Company | Connector assembly for ink cartridge |
US5751300A (en) * | 1994-02-04 | 1998-05-12 | Hewlett-Packard Company | Ink delivery system for a printer |
Also Published As
Publication number | Publication date |
---|---|
NL6412400A (ja) | 1965-06-18 |
FR1413847A (fr) | 1965-10-08 |
AT265325B (de) | 1968-10-10 |
CH397729A (de) | 1965-08-31 |
BE655638A (ja) | 1965-03-01 |
ES304813A1 (es) | 1964-12-16 |
GB1025379A (en) | 1966-04-06 |
SE322063B (ja) | 1970-03-23 |
DE1252424B (ja) |
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