EP1777074B1 - Befestigungsanordnung für einen Druckkopf - Google Patents

Befestigungsanordnung für einen Druckkopf Download PDF

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Publication number
EP1777074B1
EP1777074B1 EP20060122443 EP06122443A EP1777074B1 EP 1777074 B1 EP1777074 B1 EP 1777074B1 EP 20060122443 EP20060122443 EP 20060122443 EP 06122443 A EP06122443 A EP 06122443A EP 1777074 B1 EP1777074 B1 EP 1777074B1
Authority
EP
European Patent Office
Prior art keywords
printhead
latch member
bay
mounting structure
roller
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.)
Not-in-force
Application number
EP20060122443
Other languages
English (en)
French (fr)
Other versions
EP1777074A1 (de
Inventor
Albert W.T. Rademakers
Floris J. Marcelis
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.)
Canon Production Printing Netherlands BV
Original Assignee
Oce Technologies BV
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 Oce Technologies BV filed Critical Oce Technologies BV
Priority to EP20060122443 priority Critical patent/EP1777074B1/de
Publication of EP1777074A1 publication Critical patent/EP1777074A1/de
Application granted granted Critical
Publication of EP1777074B1 publication Critical patent/EP1777074B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • B41J2/17503—Ink cartridges
    • B41J2/17553—Outer structure
    • 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
    • B41J2/17503—Ink cartridges
    • B41J2/1752—Mounting within the printer
    • 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
    • B41J2/17503—Ink cartridges
    • B41J2/1752—Mounting within the printer
    • B41J2/17523—Ink connection

Definitions

  • the invention relates to a mounting structure for a printhead having a contact surface and a coupling member for connection to an ink supply line, the mounting structure comprising a casing which defines a bay for accommodating the printhead therein, and a biasing mechanism for biasing the printhead into engagement with the internal walls of the bay, the biasing mechanism comprising a latch member mounted on the casing and movable relative thereto between an open position where it permits to insert the printhead into the bay, and a latched position where it secures the printhead in the bay, and a contact member adapted to exert a force against the contact surface of the printhead in the latched position.
  • the invention also relates to a combination of a printhead with such a mounting structure and to a carriage for an ink jet printer having such a mounting structure.
  • US-B1-6 481 829 discloses a mounting structure of the type indicated above, which comprises a mating coupling member to be brought into engagement with the coupling member of the printhead.
  • the mating coupling member is mounted on a first lever, and the latch member is formed by a second lever that is adapted to lock the first lever in a position in which the coupling members are engaged.
  • EP-A-1 389 530 discloses a mounting structure for an ink jet printhead, wherein coupling members that are mounted on the printhead and on the casing, respectively, for establishing an ink supply line, are automatically brought into in engagement with one another when the printhead is inserted in the bay.
  • the printhead is brought into its final position by a tilting movement within the bay, and this tilting movement brings the coupling members into engagement with one another.
  • the printhead has a nozzle face formed on a projecting portion that projects through an opening formed in the walls of the bay so as to face the print medium.
  • the printhead further has a contact surface engaged by an elastically biased contact member for establishing electrical contacts between a control circuit and actuators that are associated with the nozzles of the printhead.
  • the biasing mechanism for the printhead comprises a low-friction cam on the free end of a spring that projects from a wall of the bay. When the printhead is inserted, the cam snaps-in at the ramp surface to secure the printhead in its final position within the bay.
  • the mating coupling member of the ink supply line is mounted on the latch member so as to be brought into engagement with the coupling member of the printhead when the latch member is moved into the latched position.
  • the movement of the latch is also used for bringing the coupling members of the ink supply line into engagement with one another.
  • a single operation is sufficient for locking the printhead in position and connecting the coupling member thereof to the in supply line.
  • the unlocking movement of the latch member will automatically disengage the coupling members before the printhead can be withdrawn from the bay. This has the particular advantage that inadvertent damage of the coupling members can reliably be prevented when a user removes the printhead from the bay.
  • the biasing mechanism comprises a roller mounted on an axis that is elastically supported on the latch member to bias the roller against a ramp surface formed on the printhead, when the latch member is in the latched position.
  • the ramp surface has a normal that extends in a plane spanned by two mutually orthogonal directions and is inclined relative to both said directions. In this way, the printhead is simultaneously biased in the two mutually orthogonal directions against the walls of the bay.
  • a roller instead of a cam for engaging the ramp surface of the printhead reduces the frictional forces that have to be overcome when the printhead is brought into its final position, and thereby assures that the printhead will reach its intended position with improved reliability.
  • the biasing mechanism comprises a movable latch member, the movement of this latch member may be utilized to optimise the direction in which the roller presses against the ramp surface, so that the printhead is brought into engagement with the support points in a well defined manner, and the frictional resistance occurring at the support points can safely be overcome.
  • the latch member is a lever that is pivotally supported at the casing and snaps-in at a catch of the casing when it reaches the latched position.
  • the coupling member on the side of the casing is preferably guided in a stationary guide and is suspended at the lever by means of a rig which transforms the pivotal movement of the lever into a linear movement of the coupling member along the guide.
  • the axis of roller is preferably mounted at a first arm of a two-armed auxiliary lever that is pivotable about a fulcrum defined by the latch member, and a spring for biasing the roller against the ramp surface is supported between a second arm of the auxiliary lever and the portion of the latch member.
  • the arrangement is such that when the latch member is brought into the latched position, the roller is pressed against the ramp surface in a direction that is approximately normal to the ramp surface.
  • the force exerted onto the ramp surface by the roller has components that press the printhead against the support points in both said mutually orthogonal directions.
  • a contact member is arranged to be elastically biased against a contact surface of the printhead in one of said directions, so that the biasing force will reliably be overcome by one of the components of the force exerted by the roller.
  • a straight imaginary line that passes through the axis of the roller and through the fulcrum of the auxiliary lever extends approximately but not exactly normal to the ramp surface.
  • a casing 10 which may form part of a carriage of an ink jet printer, defines a bay 12 which accommodates a printhead 14.
  • the printhead 14 which has been shown separately in Fig. 2 , has an essentially rectangular box-like shape with a projection 16 which projects downwardly through an opening in a bottom wall near the left corner of the bay 12 and defines a nozzle face 18.
  • the printhead is provided with a handle 20 which permits to grip the printhead and insert it into the bay 12, a ramp surface 22, and a coupling member 24 for connecting the printhead to an ink supply line.
  • the printhead In the top left corner in Fig. 2 , the printhead has a laterally and downwardly projecting nose 26.
  • the print elements of the printhead are formed by a number of nozzles that are formed in the nozzle face 18 and are not visible in the drawing. These nozzles must be positioned with very high accuracy relative to the casing 10.
  • the printhead 14 is supported in the bay 12 at three support points 28, 30 and 32 which define small, practically point-like, contact areas between the printhead and the walls of the bay 12.
  • the support point 28 is formed by a horizontal wall of the casing which is engaged by the nose 26 of the printhead.
  • the support point 30 is formed by a small boss in a corner of the printhead diagonally opposite to the nose 26. The boss may be formed either on the printhead or on the casing.
  • the support points 28 and 30 define the position of the printhead in the vertical Y-direction (which, by definition, is the direction from the open side towards the bottom of the bay) and also the angular position of the printhead about a Z-axis normal to the plane of the drawing in Fig. 1 .
  • the third support point 32 is formed on an end face of the casing wall which defines also the support point 28. The support point 32 defines the position of the printhead in the horizontal X-direction.
  • the printhead 14 is provided with a number of actuators (not shown) that are associated with the individual nozzles. These actuators are controlled by a control circuit (not shown) that is provided outside of the printhead. Electrical connections between the control circuit and the actuators are provided by electrical contacts arranged in a contact face 34 of the printhead and by a contact member 36 that is elastically biased against the contact face 34.
  • the contact face 34 is formed in an end wall of the printhead below the contact points 28 and 32.
  • the biasing force of the contact member 36 tends to push the printhead away from the support point 32 in (negative) X-direction.
  • a biasing mechanism 38 is provided to hold the printhead in firm engagement with all three support points 28, 30 and 32 against the force of the contact member 36.
  • the biasing mechanism comprises a latch member 40 that is pivotally connected to the casing 10 and is pivotable about an axis 42. This axis 42 is arranged approximately in the height of the support points 28 and 32 on the side of the printhead opposite to these support points.
  • the free end of the latch member 40 forms an elastic claw 44 which, in the condition shown in Fig. 1 , secures the latch member in the latched position by snapping-in at a catch 46.
  • a two-armed auxiliary lever 48 is arranged inside of the latch member 40 and is pivotable about a fulcrum 50 that is defined by the latch member.
  • a first arm of the auxiliary lever 48 supports a roller 52 which engages the ramp surface 22 of the printhead.
  • a compression spring 54 is supported at the latch member 40 and tends to tilt the auxiliary lever 48 in clock-wise direction in Fig. 1 about the fulcrum 50, thereby urging the roller 52 against the ramp surface.
  • the force which the roller 52 exerts onto the ramp surface 22 has two components which urge the printhead 14 in X-direction against the support point 32 and in Y-direction against the support points 28 and 30.
  • Fig. 3 shows the latch member 40 in an open position in which it permits to insert the printhead 14 into the bay 12.
  • the spring 54 urges the second arm of the auxiliary lever 48 against a stop 56.
  • These support points 58 define the position of the printhead 14 in Z-direction or, more exactly, of the plane in which the printhead is movable in X- and Y-direction.
  • a leaf spring 60 is arranged on the internal wall of the bay 12 opposite to the support points 58 and urges the printhead against these support points.
  • the ramp surface 22 is located at a higher level than the axis 42 and slopes toward that axis. Thus, the direction of arcuate movement of the roller 52, when it hits the ramp surface 22, is almost perpendicular to this ramp surface. More specificly, the angle between the path of the roller 52 and the ramp surface 22 is larger than 45° and preferably larger than 80°.
  • an angle formed between the ramp surface 22 and an imaginary straight line through the fulcrum 50 and the axis of the roller 52 is significantly larger than 45°.
  • the force which the fulcrum 50 exerts upon the roller 52 via the auxiliary lever 48 has a major component in the direction perpendicular to the ramp surface 22 and only a small component in the direction parallel to the ramp surface.
  • the roller 52 exerts a relatively large force which reliably presses the printhead into engagement with all three support points 28, 30 and 32.
  • the relatively small force component which is directed in parallel with the ramp surface 22 and is thus not compensated by the reaction force of the ramp surface causes the roller 52 to roll along the ramp surface 22 with low friction, thereby tilting the auxiliary lever 48 about the fulcrum 50, with compression of the spring 54. The force of the spring 54 will then safely hold the printhead in the intended position.
  • the casing 10 may form a plurality of compartments 62 each of which accommodates a printhead and is provided with a mounting structure identical to the one described above. These mounting structures assure that all the printheads are accurately positioned relative to the casing 10 and, as a consequence, relative to one another.
  • the coupling member 24 of the printhead can be connected with and deconnected from a mating coupling member 64 that is itself connectable to an ink supply line (not shown).
  • the coupling member 64 is guided in a guide rail 66 that is snap-fastened on the axis 42 and is held stationarily in the casing 10, so that, when the printhead 14 is has been inserted, the coupling members 24 and 64 are aligned with one another.
  • Figs. 5 and 6 are longitudinal sections of the coupling members 24 and 64 in the uncoupled and the coupled state, respectively.
  • the coupling member 24 has a body 68 which defines a passage 70 that communicates with the interior of the printhead 14.
  • a passage 70 that communicates with the interior of the printhead 14.
  • the end of the passage 70 is closed by an annular seal member 72 made of rubber-elastic material.
  • the seal member 72 is locked in position by a cap 74.
  • the mating coupling member 64 has a cylindrical body 76 which defines a connector 78 for connection to a flexible ink supply tube (not shown).
  • a piston 80 is slidingly guided in the body 76 and surrounds an annular sleeve 82.
  • a needle 84 passes through the sleeve 82 and extends is fitted in the connector 78 with its rear end.
  • a spring 86 biases the piston 80 into an end position defined by keys (not shown) that are formed on the internal wall of the body 76 and engage into grooves of the piston 80.
  • the needle 84 has a closed front end and a lateral opening 88 which, in the end position of the piston 80, is located inside of the sleeve 82.
  • the sleeve 82 is slidable on the needle 84 and defines two seal portions on both sides of the opening 88, so that the sleeve forms a valve which closes the ink supply line.
  • the latch member 40 is a U-shaped member with two parallel side walls 90 parts of which are shown in cross-section in Fig. 7 .
  • An arcuate rig 92 is suspended in the latch member 40 with two coaxial pivot pins 94 which engage elongated holes 96 in the side walls 90.
  • the body of the coupling member 64 is suspended in the rig 92 by means of an axle 98 which is rotatably supported in the rig in a position offset from the pivot pins 94.
  • a guide plate 100 is formed integrally with the body of the coupling member 64 and is guided in the guide rail 66.
  • Fig. 8 is a side elevation showing the detailed configuration of the rig 92.
  • Figs. 9 and 10 schematically illustrate the movement of the coupling member 64 when the latch member 40 is moved between the open position ( Fig. 9 ) and the latched position ( Fig. 10 ).
  • the movement of the pivot pins 94 in the elongated holes 96 permits to open the latch member 40 sufficiently wide, so that the printhead 14 can be inserted, as in Fig. 3 .
  • the pivot pins 92 move to the opposite ends of the elongated holes 96, as is shown in Fig. 10 .

Landscapes

  • Ink Jet (AREA)

Claims (14)

  1. Befestigungsanordnung für einen Druckkopf (14), der eine Anlagefläche (22) und ein Kupplungselement (24) zur Verbindung mit einer Tintenzufuhrleitung aufweist, wobei die Befestigungsanordnung umfaßt:
    ein Gehäuse (10), das eine Bucht (12) bildet, in welcher der Druckkopf aufgenommen werden kann; und
    einen Vorspannungsmechanismus (38) zum Vorspannen des Druckkopfes in Anlage mit den Innenwänden der Bucht (12), wobei der Vorspannungsmechanismus (38) umfaßt: ein Verriegelungselement (40), das an dem Gehäuse (10) montiert und relativ zu diesem zwischen einer geöffneten Stellung, in der es das Einsetzen des Druckkopfes in die Bucht (12) erlaubt, und einer verriegelten Stellung, in der es den Druckkopf in der Bucht sichert, bewegbar ist und ein Kontaktelement (52), das dazu ausgebildet ist, in der verriegelten Stellung eine Kraft auf die Anlagefläche des Druckkopfes auszuüben, dadurch gekennzeichnet, daß ein komplementäres Kupplungselement (64) der Tintenzufuhrleitung so an dem Verriegelungselement (40) montiert ist, daß es mit dem Kupplungselement (24) des Druckkopfes in Eingriff gebracht wird, wenn das Verriegelungselement in die verriegelte Stellung bewegt wird.
  2. Befestigungsanordnung nach Anspruch 1, für einen Druckkopf (14), der dazu ausgebildet ist, an einer Anzahl von Unterstützungspunkten (28, 30, 32), die die Position des Druckkopfes in zwei zueinander orthogonalen Richtungen (X, Y) definieren, mit den Innenwänden der Bucht (12) in Anlage gehalten zu werden, wobei die Anlagefläche des Druckkopfes eine Rampenfläche (22) ist, deren Normale, wenn sich das Verriegelungselement (40) in der verriegelten Stellung befindet, relativ zu den beiden genannten Richtungen (X, Y) geneigt ist und in der Ebene verläuft, die von Ihnen aufgespannt wird, wobei das Kontaktelement (52) eine Rolle ist, die auf einer Achse montiert ist, die elastisch an dem Verriegelungselement (40) gehalten ist, um die Rolle (52) gegen die Rampenfläche (22) vorzuspannen.
  3. Befestigungsanordnung nach Anspruch 2, bei der die Achse der Rolle (52) an einem ersten Arm eines zweiarmigen Hilfshebels (48) montiert ist, der um einen Drehpunkt (50) schwenkbar ist, der durch das Verriegelungselement (40) definiert wird, und eine Feder (54) zum Vorspannen der Rolle (52) gegen die Rampenfläche (22) zwischen einem zweiten Arm des Hilfshebels (48) und einem Teil des Verriegelungselements (40) abgestützt ist.
  4. Befestigungsanordnung nach Anspruch 3, bei der eine gedachte gerade Linie, die durch die Achse der Rolle (52) und durch den Drehpunkt (50) des Hilfshebels (48) hindurchgeht, mit der Rampenfläche (22) einen Winkel von mehr als 45° bildet, wenn der Druckkopf in die Bucht (12) eingesetzt ist und das Verriegelungselement (40) sich in der verriegelten Stellung befindet.
  5. Befestigungsanordnung nach einem der vorstehenden Ansprüche, bei der das Verriegelungselement (40) ein Hebel ist, der relativ zu dem Gehäuse (10) um eine Achse (42) schwenkbar ist.
  6. Befestigungsanordnung nach Anspruch 5, bei der das komplementäre Kupplungselement (64) an einer linearen, relativ zu dem Gehäuse (10) stationären Führungsschiene (66) geführt ist und das komplementäre Kupplungselement (64) mit dem Verriegelungselement (40) weiterhin durch ein Joch (92) verbunden ist, das die Schwenkbewegung des Verriegelungselements (40) in eine lineare Bewegung des Kupplungselements längs der Führungsschiene übersetzt.
  7. Befestigungsanordnung nach Anspruch 5 oder 6, bei welcher der Ort der Achse (42) relativ zu der Bucht (12) so gewählt ist, daß, wenn das Verriegelungselement (40) geschwenkt wird, die bogenförmige Bahn der Rolle (52) unter einem Winkel von mehr als 45°, vorzugsweise mehr als 80° auf die Rampenfläche (22) trifft.
  8. Kombination aus einem Druckkopf (14), der eine Anlagefläche (22) und ein Kupplungselement (24) zur Verbindung mit einer Tintenzufuhrleitung aufweist, und einer Befestigungsanordnung nach einem der vorstehenden Ansprüche, bei der ein erster Unterstützungspunkt (28), der die Position des Druckkopfes in einer vertikalen Richtung (Y) definiert, die eine der beiden genannten zueinander orthogonalen Richtungen ist, in der Nähe einer oberen Ecke des Druckkopfes ausgebildet ist, der im wesentlichen die Form eines rechteckigen Kastens hat, wobei die Rampenfläche (22) von einer oberen Oberfläche des Kastens in der Nähe der Mitte derselben aufsteigt, wenn der Druckkopf (14) in die Bucht (12) eingesetzt ist.
  9. Kombination nach Anspruch 8, bei der ein Unterstützungspunkt (32), der die Position des Druckkopfes in einer horizontalen Richtung (X) definiert, bei der es um die andere der beiden genannten zueinander orthogonalen Richtungen handelt, in der Nähe des ersten Unterstützungspunktes (28) gelegen ist,
  10. Kombination nach Anspruch 8 oder 9, bei der die Achse (42) des Verriegelungselemets (40) in der Nähe der Seite der Bucht (12) liegt, die den ersten Unterstützungspunkt (28) entgegengesetzt ist.
  11. Kombination nach einem der Ansprüche 8 bis 10, bei der ein weiterer Unterstützungspunkt (30), der die Position des Druckkopfes in der vertikalen Richtung (Y) definiert, diagonal gegenüberliegend zu dem ersten Unterstützungspunkt (28) angeordnet ist.
  12. Kombination nach einem der Ansprüche 8 bis 11, mit einem Kontaktelement (36), das gegen eine Kontaktfläche (34) des Druckkopfes (14) vorgespannt ist, wenn der Druckkopf in die Bucht (12) eingesetzt ist, wobei das Kontaktelement (36) dazu geeignet ist, elektrische Kontakte mit der Kontaktfläche (34) zu bilden, und unterhalb des ersten Unterstützungspunktes (28) liegt.
  13. Wagen für einen Tintenstrahldrucker, mit wenigstens einer Befestigungsanordnung für einen Druckkopf nach einem der Ansprüche 1 bis 7.
  14. Wagen für einen Tintenstrahldrucker, mit wenigstens einer Kombination aus einem Druckkopf (14) und einer Befestigungsanordnung nach einem der Ansprüche 8 bis 12.
EP20060122443 2005-10-21 2006-10-17 Befestigungsanordnung für einen Druckkopf Not-in-force EP1777074B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20060122443 EP1777074B1 (de) 2005-10-21 2006-10-17 Befestigungsanordnung für einen Druckkopf

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05109848 2005-10-21
EP20060122443 EP1777074B1 (de) 2005-10-21 2006-10-17 Befestigungsanordnung für einen Druckkopf

Publications (2)

Publication Number Publication Date
EP1777074A1 EP1777074A1 (de) 2007-04-25
EP1777074B1 true EP1777074B1 (de) 2009-05-13

Family

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Family Applications (1)

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EP20060122443 Not-in-force EP1777074B1 (de) 2005-10-21 2006-10-17 Befestigungsanordnung für einen Druckkopf

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102806766A (zh) * 2011-06-03 2012-12-05 株式会社理光 图像形成装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102490471B (zh) * 2011-11-25 2014-11-05 深圳市润天智数字设备股份有限公司 一种喷头定位装置及应用该装置的喷绘打印机
JP6818460B2 (ja) * 2016-07-29 2021-01-20 キヤノン株式会社 記録装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997006010A1 (fr) * 1995-08-10 1997-02-20 Seiko Epson Corporation Cartouche pour imprimante a jet d'encre et imprimante a jet d'encre
US6106109A (en) * 1997-03-03 2000-08-22 Hewlett-Packard Company Printer apparatus for periodic automated connection of ink supply valves with multiple inkjet printheads
JP3495926B2 (ja) * 1998-10-27 2004-02-09 キヤノン株式会社 記録装置
JP2001071523A (ja) * 1999-09-03 2001-03-21 Canon Inc プリント装置
US6481829B1 (en) * 2001-09-18 2002-11-19 Lexmark International, Inc. Manually actuated carrier latch mechanism

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102806766A (zh) * 2011-06-03 2012-12-05 株式会社理光 图像形成装置
US8888247B2 (en) 2011-06-03 2014-11-18 Ricoh Company, Ltd. Image forming apparatus including recording head for ejecting liquid droplets
CN102806766B (zh) * 2011-06-03 2015-05-06 株式会社理光 图像形成装置

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Publication number Publication date
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