US3401402A - Closed ink reservoir for recording instruments - Google Patents

Closed ink reservoir for recording instruments Download PDF

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Publication number
US3401402A
US3401402A US637591A US63759167A US3401402A US 3401402 A US3401402 A US 3401402A US 637591 A US637591 A US 637591A US 63759167 A US63759167 A US 63759167A US 3401402 A US3401402 A US 3401402A
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US
United States
Prior art keywords
reservoir
ink
tray
membrane
closed
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
Application number
US637591A
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English (en)
Inventor
Scheuzger Peter
Marshall S Joseph
Ono Hiroshi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Victor Comptometer Corp
Original Assignee
Victor Comptometer Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Victor Comptometer Corp filed Critical Victor Comptometer Corp
Priority to US637591A priority Critical patent/US3401402A/en
Priority to AT447068A priority patent/AT288729B/de
Priority to GB22136/68A priority patent/GB1166423A/en
Priority to FR1592111D priority patent/FR1592111A/fr
Priority to DE19681773393 priority patent/DE1773393B1/de
Application granted granted Critical
Publication of US3401402A publication Critical patent/US3401402A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • This invention overcomes the disadvantages of such prior ink sacs or bags, while enabling the superior closed ink system to be employed, by providing a novel closed ink reservoir having maximum resistance to water vapor transmission or permeability with resulting maximum shelf life, and also a very high degree of flexibility to assure uninterrupted capillary supply of ink to the pen.
  • the invention also comprehends a large volume reservoir, maximum resistance to rough handling in shipment, and greatly simplified installation and replacement.
  • the reservoir comprises a rigid molded polyethylene tray having snap-fit engagement with the recording instrument, a thin flexible fluorohalocarbon plastic membrane heat sealed marginally to the upper edge of the tray and generally conforming to the interior shape of the tray when collapsed with the reservoir empty, a heavier cover film overlying and marginally heat sealed to the flexible membrance for absorbing shock loads encountered in shipping and handling and as a barrier to water vapor transmission from the ink and perforated to subject the membrane to atmospheric pressure in use, and a bottom film heat sealed to the base of the tray for additional protection against ink coagulation, with a twopart shipping container having one part formed to receive the reservoir and the other part formed to receive a pressure pad for absorbing shocks, vibrations and stresses incurred in shipping and handling to prevent resultant rupturing of the reservoir.
  • FIGURE 1 is a top plan view of a portion of a recording instrument showing a closed ink reservoir embodying the features of this invention mounted therein;
  • FIG. 2 is an end elevation, as seen from the lower side of FIG. 1, with parts in section;
  • FIG. 3 is an enlarged detail vertical section through the reservoir taken substantially on the line 33 of FIG. 1;
  • FIG. 4 is a vertical section through a shipping container housing the reservoir.
  • reference numeral 11 indicates in general a recording instrument of well-known construction which includes a cantilever type of pen support 12 for a pen nib 13 (FIG. 2) supplied by a capillary tube 14 which extends through the pen support 12 and is connected to one end of a supply tube 15 of somewhat larger diameter.
  • the recording instrument 11 also includes a writing platen 16 supported in well-known manner by posts 17 in parallel spaced relationship above a base plate 18 (FIG. 2) from which a vertical anchor pin 19 extends upwardly adjacent one side of the instrument, as seen at the top of FIG. 1.
  • a recording instrument of this type is disclosed in copending application for United States Letters Patent Ser. No. 582,729, filed Sept. 28, 1966 wherein all of the parts are the same as those heretofore described, except for the anchor pin 19.
  • the pen 13 is moved into and out of engagement with paper or any other suitable recording medium disposed on the platen 16 and moves omnidirectionally thereover at high speed with rapid acceleration and deceleration.
  • a combination pressure and capillary system is employed for supplying the pen with ink which includes the capillary tube 14 and the larger supply tube 15, as previously described herein, and a closed flexible bag or sac connected to the latter as an ink supply reservoir.
  • the instant invention comprises an improved closed ink reservoir designated generally by reference numeral 21 for use in a recording instrument, such as that disclosed in said prior application, together with a novel shipping container for that reservoir to be described hereinafter. 1
  • the reservoir 21 comprises a rigid molded polyethylene tray 22 having a threaded inlet nipple 23 formed integrally therewith adjacent one corner and, as shown in FIG. 1, integral snap-fit means 24 formed at its other end as outwardly extending protuberances separated from each other to define a horizontally disposed V-shaped notch 25 communicating with an apertured slot 26 for frictionally engaging the anchor pin 19.
  • the width of the tray 22 is such as to conveniently pass between adjacent platen mounting posts 17 to permit snap-fit engagement of the means 24 with the anchor pin 19 to retain the tray and the reservoir 21 in its operative position of FIG. 1 on the base plate 18 below the platen 16.
  • the inlet nipple 23 of the tray 22 is adapted to be connected by a suitable coupling 27 to the end of the supply tube remote from the pen 13. It will be understood that prior to installation of the reservoir 21 in the recording instrument 11, a suitable cap 28 (FIG. 3) will be mounted on the nipple 23, and that this will be removed and the coupling 27 connected to the reservoir when it is to be placed in the recording instrument.
  • a thin flexible membrane 29 with a low permeability to moisture or water vapor contained in the ink employed is molded to substantially the same contour as that of the interior of the tray 22 with its marginal portions conforming to the upper edges of the tray. It has been found that the most satisfactory material for this membrane 29 is a fluorohalocarbon plastic with a thickness of approximately one mil. Interposed between the marginal portions of the membrane 29 and the upper edges of the tray 22 is a laminated fluorohalocarbon-polyethylene gasket 31 (FIG. 3) which facilitates heat sealing of the marginal portions of the membrane 29 to the tray 22.
  • a backing plate or heavier cover film 32 of fluorohalocarbon plastic preferably five mils in thickness, is disposed across the top of the tray and marginally heat sealed to the membrane 29 in well-known manner.
  • a fiuorohalocarbon-polyethylene laminated film 33 may be heat sealed to the bottom of the tray 22.
  • membrane 29 thus provided will assure the desired ink feeding. It also will be appreciated that membrane 29 alone would have insufficient resistance to permeability of the water vapor in the ink during handling or movement of the reservoir, but the cover film 32 effectively backs up the membrane 29 to so increase the resistance to water vaporpermeability that the reservoir 21 has a very long shelf life expectancy. This is enhanced by the use of the bottom film 33, and it will be appreciated that prior to installation of the reservoir 21 in a recording instrument and after it has been filled with ink, it is preferred that a temporary sealing tab of suitable film material be placed over the perforation or apertures 34 in the cover film 32.
  • the shipping cap 28 When it is desired to install an ink reservoir 21 in the recording instrument 11, the shipping cap 28 is removed and the reservoir secured to the free end of the supply tube 15 by means of the coupling 27.
  • the closed ink reservoir then may be elevated approximately one foot above the recording instrument to initiate ink flow through the supply tubes 15 and 14 to the pen 13.
  • the reservoir 21 is placed on the base plate 18 and slid laterally between the posts 17 to engage the snap-fit means 24 with the anchor pin 19, the temporary sealing strip over the perforation or apertures 34 first having been removed.
  • this thin membrane 29 allows a much higher degree of flexibility than a thicker-walled bag or sac would provide in order to assure uninterrupted capillary flow to the pen.
  • FIG. 4 illustrates a shipping container specifically designed for this closed ink reservoir 21 which comprises separable lower and upper portions 35 and 36 adapted to be secured together by suitable clips, tape, or any other desired means.
  • the lower portion 35 of this shipping container which preferably is injection molded from a suitable polyurethane mixture, is provided with a cavity 37 in its upper surface shaped to conform to the outer contour of the reservoir 21, and particularly the tray 22.
  • the upper portion 36 of the container preferably is made of the same material as the lower portion and is pro vided in its lower surface with a cavity 38 larger in plan than the tray 22, with a pressure pad 39 disposed therein.
  • a closed ink reservoir for recording instruments comprising a rigid tray, a thin flexible membrane of low permeability to ink substantially conformed to the inner contour of said tray and marginally sealed thereto, a substantially flat, heavier and apertured cover film marginally secured to said tray and membrane, and means providing access to the interior of said tray to enable filling thereof with ink to press said membrane into intimate contact with said cover film.
  • a fluorohalocarbon-polyethylene laminated film heat sealed to the bottom of said tray.
  • a closed ink reservoir according to claim 1 for use in a recording instrument having an anchor pin, snapfit means forming a part of said tray for engagement with said pin to remo'vably anchor the reservoir in the instrument.
  • a closed ink reservoir according to claim 1 having a shipping container comprising a lower portion with a cavity in its upper surface shaped to conform to the outer contour of said tray, an upper portion with a cavity in its under surface larger in plan than said tray, and a pressure pad disposed in said cavity in said upper portion to exert pressure against said cover film when said tray is disposed in said cavity in said lower portion and to absorb shocks and vibrations attendant with shipping and handling of the reservoir-containing shipping container.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Ink Jet (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Pens And Brushes (AREA)
US637591A 1967-05-10 1967-05-10 Closed ink reservoir for recording instruments Expired - Lifetime US3401402A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US637591A US3401402A (en) 1967-05-10 1967-05-10 Closed ink reservoir for recording instruments
AT447068A AT288729B (de) 1967-05-10 1968-05-09 Geschlossener Tintenbehälter für Registrierinstrumente
GB22136/68A GB1166423A (en) 1967-05-10 1968-05-09 Closed Ink Reservoir and Shipping Container thereof
FR1592111D FR1592111A (de) 1967-05-10 1968-05-09
DE19681773393 DE1773393B1 (de) 1967-05-10 1968-05-09 Tintenversorgungseinrichtung fuer ein registriergeraet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US637591A US3401402A (en) 1967-05-10 1967-05-10 Closed ink reservoir for recording instruments

Publications (1)

Publication Number Publication Date
US3401402A true US3401402A (en) 1968-09-10

Family

ID=24556589

Family Applications (1)

Application Number Title Priority Date Filing Date
US637591A Expired - Lifetime US3401402A (en) 1967-05-10 1967-05-10 Closed ink reservoir for recording instruments

Country Status (5)

Country Link
US (1) US3401402A (de)
AT (1) AT288729B (de)
DE (1) DE1773393B1 (de)
FR (1) FR1592111A (de)
GB (1) GB1166423A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3482258A (en) * 1968-07-23 1969-12-02 Esterline Corp Sterile ink supply
FR2384624A1 (fr) * 1977-02-04 1978-10-20 Siemens Ag Reservoir a encre evitant tout debordement

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2610518C3 (de) * 1976-03-12 1983-04-07 Siemens AG, 1000 Berlin und 8000 München Tintenvorratsbehälter für Tintenschreibeinrichtungen
DE2709730C2 (de) * 1977-03-05 1981-12-03 Olympia Werke Ag, 2940 Wilhelmshaven Tintenbehälter mit einem flexiblen Beutel
DE2742633C2 (de) * 1977-09-22 1982-12-09 Olympia Werke Ag, 2940 Wilhelmshaven Allseitig verschlossener Behälter zur Aufnahme eines füllbaren Beutels

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2582043A (en) * 1947-03-27 1952-01-08 Nielsen A C Co Stylus for graphic recording
US2820689A (en) * 1954-03-18 1958-01-21 Bailey Meter Co Capillary pens
US3169821A (en) * 1963-11-20 1965-02-16 Hewlett Packard Co Fluid pressure controller

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1035420A (de) * 1900-01-01
DE1746782U (de) * 1956-10-17 1957-06-13 Siemens Ag Schreibvorrichtung fuer registrierende messinstrumente.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2582043A (en) * 1947-03-27 1952-01-08 Nielsen A C Co Stylus for graphic recording
US2820689A (en) * 1954-03-18 1958-01-21 Bailey Meter Co Capillary pens
US3169821A (en) * 1963-11-20 1965-02-16 Hewlett Packard Co Fluid pressure controller

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3482258A (en) * 1968-07-23 1969-12-02 Esterline Corp Sterile ink supply
FR2384624A1 (fr) * 1977-02-04 1978-10-20 Siemens Ag Reservoir a encre evitant tout debordement

Also Published As

Publication number Publication date
FR1592111A (de) 1970-05-11
DE1773393B1 (de) 1971-08-12
GB1166423A (en) 1969-10-08
AT288729B (de) 1971-03-25

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