US3787880A - Ink jet printer interchangeable recording head - Google Patents

Ink jet printer interchangeable recording head Download PDF

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Publication number
US3787880A
US3787880A US00280821A US3787880DA US3787880A US 3787880 A US3787880 A US 3787880A US 00280821 A US00280821 A US 00280821A US 3787880D A US3787880D A US 3787880DA US 3787880 A US3787880 A US 3787880A
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US
United States
Prior art keywords
recording head
carriage
ink
ink jet
supply line
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
US00280821A
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English (en)
Inventor
E Kattner
K Bork
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Application granted granted Critical
Publication of US3787880A publication Critical patent/US3787880A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/34—Bodily-changeable print heads or carriages

Definitions

  • the printer has conventional deflection plates or electrodes which, when energized, create an electromagnetic field corresponding to the shape of the indicia to be recorded and cause the spray of ink issuing from the head to be deflected to assume the configuration of the magnetic field.
  • the head is moved along a record sheet traveling about a roll and is connected to its carrier by plug in connections, to enable cleaning or exchanging of the head and to avoid all solder connections.
  • the plug-in connections are so arranged to prevent the plugging forces from being transmitted to the recording head.
  • Ink jet printing in place of contact printing is known to the art.
  • predetermined indicia are applied to a record sheet by means of a jet spray of dyed liquid, which may be in the form of ink.
  • an electromagnetic field corresponding to the form of the indicia to be recorded, causes the spray of ink to be magnetically deflected by the electromagnetic field set up, to assume the configuration of the resultant electromagnet field.
  • the present invention avoids the foregoing difficulties in that it provides a recording head which can be coupled to its carrier through a plug-in connection mechanically connecting the head to its carrier and making the electrical connections during the connecting process.
  • the ink supply line is connected to the recording head through a plug-in connection which can be made while plugging in the recording head.
  • the recording head carrier carries at least one rigid ink line which can be connected with an ink supply hose and tightly coupled through a leak-proof connection with a connection nipple leading to the ink jet nozzle while the recording head is being plugged in.
  • a further advantage of the present invention is that a simple plug-in connection to the ink line is provided including two rigid aligned ink lines so arranged that transmitting of the plug-in connecting forces to the recording head is avoided.
  • a further advantage in the invention is that the recording head is slidably supported on a pair of parallel guide rods or wires to be shifted across a recording sheet, which serve to guide the carriage, and are associated with guide wires under tension on opposite sides of the plug-in part of the carriage adapted, to have the recording head plugged in from above, in which the guide rods support the carriage on opposite sides of the guide wires to relieve the guide wires from the plug-in forces occuring during the connecting process.
  • FIG. 1 is a diagrammatic perspective view illustrating one form in which our invention may be embodied.
  • FIG. 2 is an end view of the recording head shown in FIG. 1, with part of the head removed.
  • FIG. 3 is a view in side elevation of the recording head shown in FIGS. 1 and 2 with parts of the supports and guides for the carriage shown in transverse section.
  • FIG. 4 is a diagrammatic perspective view illustrating another form in which our invention may be embodied and showing the carrier head lifted from its carriage.
  • FIG. 5 is a fragmentary side view of the carrier head and part of the carriage with certain parts broken away and other parts shown in transverse section, and showing the association of the recording head with a record sheet;
  • FIG. 6 is a front end view of the recording head and carriage with certain parts broken away and certain other parts shown in transverse section.
  • FIG. 1 of the drawings we have diagrammatically shown a recording device 1 of the jet ink printer type, guided and moved across a sheet (not shown) trained about a roll, which may be a driven roll, as shown in FIG. 5, for recording indicia thereon.
  • the recording device includes a generally vertically extending carriage 1b having an enlarged generally rectangular housing portion and socket member la at its upper end, for receiving and supporting a recording head 3.
  • the carriage 1b is supported intermediate its ends for slidable movement along a rod 15 supported at its opposite ends on support blocks 15a and 15b forming a part of the frame (not shown) of the recording device.
  • a tensioning wire 2 is secured at one end to the block 15a in a suitable manner and extends parallel to the rod 15 through a guide bushing 2a (FIGS. 2 and 3) extending across the carriage and above the guide rod 15 about a rounded outer end portion of the block 15b and toward the block 15a through a guide bushing 2b carried at the lower end of the carriage on a widened base therefor and forming an elongated guide for the carriage on the lower wire 2, to maintain the recording device in an upright position.
  • the guide wire 2 is suitably secured at its adjacent ends to the block 15a to place said wire under tension in a manner well known to those skilled in the art so not herein shown or described further.
  • a flexible drive member 2c may be suitably connected to the bottom of the carriage lb and be trained about a direction changing pulley 2d, shown as being disposed adjacent the block 15b and around direction changing members 2e spaced outwardly of the block 15a, to a suitable means for driving said flexible drive member, and moving the carriage lb along the rod 15 at a controlled rate of speed, controlled by the rate of travel of the recording sheet about its roll.
  • the means for moving the carriage and driving the flexible drive member 20 is no part of the present invention, so need not herein be shown or described further.
  • the rectangular enlarged housing portion and socket member la of the carriage 1b is shown in FIG. 2 as being of a generally rectangular form, having a socket 1e generally cylindrical in form, extending therethrough and opening into contact chambers 8a, 10a and 11a for contacts 8, 9, l and 11 spaced outwardly of said wall as illustrated in FIG. 2.
  • the recording head 3 has a generally cylindrical head portion 3a, shown as being hollow and forming a plug slidably fitting or adapted to be plugged within socket 1e in the housing portion and socket member 1a.
  • FIG. 3 shows the recording head 3 as extending entirely through the socket 1e and as having a closed rear end portion 3b.
  • the cylindrical wall 3a or plug portion of the recording head closely engages the internal wall 1e of the socket of the housing portion an socket member la, to accommodate the recording head to be slidably moved within the housing portion and socket member with its nozzle end projecting beyond the front of said housing and socket member 1a and to be readily removed therefrom by a sliding or unplugging operation, when it is desired to clean or interchange the recording head with another recording head.
  • the recording head 3 is hollow and has a series of chordally extendingslots therein for receiving deflection plates 4,5,6 and 7 extending thereacross, with one end of each deflection plate projecting into an associated contact chamber.
  • the deflection plates 4 and 5 are shown as extending into the contact chamber 8a into contacting engagement with the respective contacts 8 and 9.
  • the deflection plate 6 extends into the contact chamber 10a into engagement with the contact 11 and the deflection plate 7 extends into contact chamber 11a into engagement with the contact 11, as the recording head is plugged into the receptacle 1e.
  • the deflection plates may be plastic plates covered with gold, in order to obtain good contact with the contacts 8,9,10 and 11, which also may be gilded.
  • the contacts 8,9,10 and 11 may be electrically connected to a suitable electric control circuit programmed to energize said contacts to produce electromagnetic fields between the deflection plates 4,5,6 and 7 in accordance with the ink jet pattern required to print the preselected indica on the recording sheet in a manner well known to those skilled in the art so not herein shown or described further.
  • the recording head 3 When the recording head 3 is plugged into the receptacle 1e, it may be held in the required position as by a spring-like bale 12 forming a locating and locking member extending within or suitably secured to the housing and socket portion la adjacent opposite sides thereof, and biased into engagement with a projecting nozzle portion 3d of the recording head 3, to hold said recording head in the proper position.
  • the spring-like locating and locking member 12 may fit along a flattened surface (not shown) of the recording head to hold the recording head in position, or may fit into a suitable notch (not shown) to hold the recording head in position, but to enable ready removal or the recording head from its socket.
  • the recording head 3 has a nipple 3c for an ink hose 13 depending therefrom.
  • the ink hose 13 may be supply hose and may supply ink to the recording head at a preselected pressure.
  • the closed end portion 3b of said recording head also has a nipple 3d depending therefrom, for an ink hose 14.
  • the hose 14 may be a drain hose.
  • the ink hoses 13 and 14 may readily be disconnected from said nipples prior to removal of the recording head from the socket 1e and may be connected to said nipples as the recording head is plugged into its socket.
  • a guide bracket 14a extends rearwardly from the carriage to hold the ink hoses l3 and 14 in spaced relation with respect to each other.
  • the recording head may readily be plugged into itsreceptacle and that the contacts to the deflection plates are made during the plugging operation with no soldering or other connection, other than bearing engaging connections between the deflection plates and their contacts.
  • a translationally movable carriage 21 is provided with guide slots opening to opposite sides thereof and slidably supported on guide rods 22 and 23.
  • the guide rods 22 and 23 are mounted at their ends on frame members 22a and 23a, forming a part of the main frame of the machine.
  • the rods 22 and 23 will absorb relatively high plugging forces, in each position of the carriage with little, if any, bending of said rodsand a guide wire 24.
  • the carriage 21 is shown as being of a generally rectangular blocklike form having a central rectangular recessed portion 21a to receive a base 26 for a recording head 25.
  • the guide wire 24 under tension extends about a direction changing sheave 24a on the inside of the bracket member 22a, through apertured guide portions extending through the carriage 21 and equally spaced from opposite sides of the recessed portion 21a, to the bracket member 23a, and is secured thereto at its ends in such a manner as to place said guide wires 24 under tension.
  • a flexible drive member 23b is provided to drive the carriage 21 along the guide rods 22 and 23.
  • the flexible drive member 23b is diagrammatically shown as trained along the rod 23 about a direction changing sheave 23d on an arm 23f of the bracket member 22a, to the opposite end of the guide rod 23, and about sheaves 23g rotatable about coaxial vertical axes. Suitable means may be provided for driving the flexible drive member and moving the carriage 21 and recording head 25 back and forth along the support and guide rods 22 and 23 parallel to a roll 19, having a recording sheet 20 trained thereabout.
  • the drive connection to the flexible drive member 23b may be of a conventional form and is no part of the present invention so need not herein be shown or described further.
  • the recording head 25 includes a housing 25a rigidly mounted on the upper part of the base 26 and extending upwardly therefrom.
  • the base 26 extends downwardly of the recording head and has four plug-in contacts spaced diametrically apart and depending therefrom. Said contacts are plug-in contacts and have electrical connection with the deflection plates 4,5,6 and 7 of the recording head, which like the deflection plates shown in FIG. 2, are arranged at right angles with respect to each other chordally of the cylindrical surface of the housing for the recording head and may have direct bearing engagement with the conductors leading from the said plug-in contacts.
  • the base 26 has 1 a plug housing portion 26a conforming to the recess 21a an fitting therein.
  • a cross-piece 26b extending across the housing portion 26a has an opening therein for receiving a rubber grommet or sleeve 27 and accommodating said grom-,
  • the cross-piece 26b is movable with the housing portion 26a along the recessed portion 21a when plugged the recording head in or withdrawing the recording head from the recessed portion 21a.
  • a nipple 32 depends from a carrier 32a for the recording head into sealing engagement with the sleeve 27, and has communication with the recording head, for supplying ink thereto.
  • a fluid connector 32b is plugged into the resilient sleeve or grommet 27 in direct alignment with the nipple 32 with its discharge end out of contact with said nipple.
  • Said fluid connector is hollow to accommodate the flow of ink therethrough from the ink pump (not shown) and has a head 32c on its lower end with a flanged bottom portion engaging the bottom of an internal bottom wall of the recessed portion 21a of the carriage 21, and secured thereto.
  • a passageway 29a leads through the bottom wall of the recessed portion 21a in direct alignment with the flanged connector 29 and depends therefrom and has a reduced end portion for a hose 28.
  • the flange of the connector 29 may be suitably secured to the bottom of the recessed portion of the carriage, to provide a continuous ink connection from the hose 28 through the conduit 29, fluid passageway 29a, fluid conduit 32b and nipple 32.
  • the hose 28 and fluid conduit 32b thus have no contact with the nipple 32 so that connecting or plugging forces connecting the housing portion 26a for the recording head to the recessed portion 21a, are isolated from the recording head.
  • An insulator 31 is firmly connected with the lower carriage part 21 and forms a multiple receptacle bushing for the plug-in pins arranged at 90 with respect to each other.
  • Plug-in pins 34 shown in FIG. 6 engage suitable receptacles in said multireceptacle bushing. Other plug-in pins not shown at right angles to the pins 34 are plugged into said receptacle.
  • the receptacles for the other plug-in pins are shown as having conductors 33 leading therefrom.
  • the conductors 33 and plug-in pins 34 thus serve as electrical connection lines for establishing the required electromagnetic fields along the vertical and horizontal deflection plates 4,5,6 and 7.
  • a nipple 36 leads from the recording head in parallel spaced relation with respect to the nipple 32 and has a rubber hose 37 leading therefrom having a wick 39 extending therealong for allowing the return of ink to a suitable receptacle for waste ink.
  • a recording head including an ink jet nozzle and a series of deflecting plates extending thereacross in horizontal and vertical directions,
  • a recording head including an ink jet nozzle and a series of deflecting plates extending thereacross in horizontal and vertical directions,
  • said internal cylindrical wall of said socket having spaced chambers leading therefrom for respective of said deflection plates and energizing contacts for said deflection plates
  • said socket and chambers forming slidable plug-in connections electrically connecting said deflecting plates to energize said deflecting plates to create electromagnetic fields along said deflecting plates in conformance to the form of the indicia to be recorded.
  • ink supply and return nipples lead into and from said recording head and ink lines are provided to be plugable along said nipples as the recording head is plugged in.
  • a recording head including an ink jet nozzle and a series of deflecting plates extending thereacross in horizontal and vertical directions,
  • said carriage having at least one rigid ink supply line
  • said recording head having an ink supply nipple in direct alignment with said ink supply line
  • a resilient sleeve carried by said recording head on said nipple so arranged as to be plugged into said rigid ink supply line upon plugging in the recording head to provide a leak-proof connection between said supply line and the recording head.
  • the ink jet recording device of claim 5 including means shifting the carriage along the line of the record sheet, means supporting and guiding the carriage for movement in a rectilinear path,
  • the recording head has a base supporting said recording head in elevated relation with respect to said base, and
  • the carriage has a recessed portion conforming to said base and forming a receptacle for plugging in bushing and forms a support for an ink supply line leading downwardly therefrom beneath said carriage adapted to have an ink hose plugged in from below,
  • a connecting sleeve is provided for plugging in said fluid connection to said recording head upon plugging said recording head into said base.
  • the means supporting said guiding the carriage for movement along a recording path comprises two parallel spaced rods slidably supporting said carriage and extending in a horizontal plane, two guide wires spaced inside of said guide rods, and
  • an ink supply line extends upwardly from said carriage
  • said ink supply line is a rigid line plugged into said sleeve upon plugging of said head into said carriage.
  • the rigid ink supply line leading upwardly from said carriage is surrounded by a dish-like component for catching ink which may emerge when the recording head is removed from said supply line.
  • the carriage has a channel portion leading therefrom for draining dripping ink from the recording head.
  • the recording head has a return ink nipple depending therefrom, and

Landscapes

  • Ink Jet (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Facsimile Heads (AREA)
US00280821A 1971-08-24 1972-08-15 Ink jet printer interchangeable recording head Expired - Lifetime US3787880A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2142409A DE2142409C3 (de) 1971-08-24 1971-08-24 Schreibvorrichtung fur Tinten Strahldrucker

Publications (1)

Publication Number Publication Date
US3787880A true US3787880A (en) 1974-01-22

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ID=5817647

Family Applications (1)

Application Number Title Priority Date Filing Date
US00280821A Expired - Lifetime US3787880A (en) 1971-08-24 1972-08-15 Ink jet printer interchangeable recording head

Country Status (11)

Country Link
US (1) US3787880A (de)
JP (1) JPS4830829A (de)
BE (1) BE787962A (de)
BR (1) BR7205807D0 (de)
CH (1) CH543398A (de)
DE (1) DE2142409C3 (de)
FR (1) FR2151387A5 (de)
GB (1) GB1345838A (de)
IT (1) IT964060B (de)
LU (1) LU65928A1 (de)
NL (1) NL7210939A (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4050564A (en) * 1973-11-23 1977-09-27 International Business Machines Corporation Electronic control for optimizing carrier turnaround in printing apparatus
FR2354201A1 (fr) * 1976-06-07 1978-01-06 Silonics Imprimante a jets d'encre
EP0054694A2 (de) * 1980-12-19 1982-06-30 International Business Machines Corporation Für einen Tintenstrahldrucker mit einem entlang der Druckzeile hin und her bewegbaren Druckwagen bestimmter Druckkopf
US4367479A (en) * 1980-11-03 1983-01-04 Exxon Research And Engineering Co. Method and apparatus for purging and/or priming an ink jet
US4376283A (en) * 1980-11-03 1983-03-08 Exxon Research And Engineering Co. Method and apparatus for using a disposable ink jet assembly in a facsimile system and the like
US4577200A (en) * 1983-11-26 1986-03-18 Olympia Werke Ag Cassette for the ink jet printer of an office machine
US4635080A (en) * 1984-03-30 1987-01-06 Canon Kabushiki Kaisha Liquid injection recording apparatus
WO1989008561A1 (en) * 1988-03-14 1989-09-21 Eastman Kodak Company Continuous ink jet printer having modular print head assembly
EP0622232A2 (de) * 1993-04-30 1994-11-02 Hewlett-Packard Company Wischvorrichtung zum Reinigen der elektrischen Kontakte von Druckern und Tintenkassetten
US5668582A (en) * 1993-10-11 1997-09-16 Ing. C. Olivetti & C., S.P.A. Printer with interchangeable printing heads
US20180015751A1 (en) * 2010-10-15 2018-01-18 Memjet Technology Limited Suspended inkjet printing system

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2632580C2 (de) * 1976-07-20 1982-07-15 Olympia Werke Ag, 2940 Wilhelmshaven Tintenversorgungssystem mit einem Schreibkopf zur Übertragung von Tinte auf einen Aufzeichnungsträger
JPS55138539U (de) * 1980-04-02 1980-10-02
DE3342895A1 (de) * 1983-11-26 1985-06-05 Olympia Werke Ag, 2940 Wilhelmshaven Schreib- oder aehnliche bueromaschine mit einem einen auswechselbaren schreibkopf aufweisenden tintenschreibwerk
JPH0626886B2 (ja) * 1984-01-30 1994-04-13 キヤノン株式会社 液体噴射記録装置
JPS60204340A (ja) * 1984-03-30 1985-10-15 Canon Inc 液体噴射記録装置
JPH0741719B2 (ja) * 1984-11-19 1995-05-10 キヤノン株式会社 インクジエツト記録装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3458760A (en) * 1967-02-13 1969-07-29 Paillard Sa Writing head producing a jet of ink

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3458760A (en) * 1967-02-13 1969-07-29 Paillard Sa Writing head producing a jet of ink

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4050564A (en) * 1973-11-23 1977-09-27 International Business Machines Corporation Electronic control for optimizing carrier turnaround in printing apparatus
FR2354201A1 (fr) * 1976-06-07 1978-01-06 Silonics Imprimante a jets d'encre
US4074284A (en) * 1976-06-07 1978-02-14 Silonics, Inc. Ink supply system and print head
US4367479A (en) * 1980-11-03 1983-01-04 Exxon Research And Engineering Co. Method and apparatus for purging and/or priming an ink jet
US4376283A (en) * 1980-11-03 1983-03-08 Exxon Research And Engineering Co. Method and apparatus for using a disposable ink jet assembly in a facsimile system and the like
EP0054694A2 (de) * 1980-12-19 1982-06-30 International Business Machines Corporation Für einen Tintenstrahldrucker mit einem entlang der Druckzeile hin und her bewegbaren Druckwagen bestimmter Druckkopf
EP0054694A3 (en) * 1980-12-19 1983-08-03 International Business Machines Corporation Print head for an ink-jet printer with a reciprocating print head carrier
US4577200A (en) * 1983-11-26 1986-03-18 Olympia Werke Ag Cassette for the ink jet printer of an office machine
US4635080A (en) * 1984-03-30 1987-01-06 Canon Kabushiki Kaisha Liquid injection recording apparatus
WO1989008561A1 (en) * 1988-03-14 1989-09-21 Eastman Kodak Company Continuous ink jet printer having modular print head assembly
EP0622232A2 (de) * 1993-04-30 1994-11-02 Hewlett-Packard Company Wischvorrichtung zum Reinigen der elektrischen Kontakte von Druckern und Tintenkassetten
EP0622232A3 (de) * 1993-04-30 1996-05-01 Hewlett Packard Co Wischvorrichtung zum Reinigen der elektrischen Kontakte von Druckern und Tintenkassetten.
US5598194A (en) * 1993-04-30 1997-01-28 Hewlett-Packard Company Wiping structure for cleaning electrical contacts for a printer and ink cartridge
US5668582A (en) * 1993-10-11 1997-09-16 Ing. C. Olivetti & C., S.P.A. Printer with interchangeable printing heads
US20180015751A1 (en) * 2010-10-15 2018-01-18 Memjet Technology Limited Suspended inkjet printing system
US10414178B2 (en) * 2010-10-15 2019-09-17 Memjet Technology Limited Suspended inkjet printing system

Also Published As

Publication number Publication date
FR2151387A5 (de) 1973-04-13
LU65928A1 (de) 1973-02-22
BE787962A (fr) 1973-02-26
GB1345838A (en) 1974-02-06
JPS4830829A (de) 1973-04-23
IT964060B (it) 1974-01-21
DE2142409C3 (de) 1973-11-29
DE2142409B2 (de) 1973-05-17
CH543398A (de) 1973-10-31
BR7205807D0 (pt) 1973-09-13
NL7210939A (de) 1973-02-27
DE2142409A1 (de) 1973-03-01

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