EP0418815B1 - Tintenstrahlaufzeichnungsapparat - Google Patents

Tintenstrahlaufzeichnungsapparat Download PDF

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Publication number
EP0418815B1
EP0418815B1 EP90117931A EP90117931A EP0418815B1 EP 0418815 B1 EP0418815 B1 EP 0418815B1 EP 90117931 A EP90117931 A EP 90117931A EP 90117931 A EP90117931 A EP 90117931A EP 0418815 B1 EP0418815 B1 EP 0418815B1
Authority
EP
European Patent Office
Prior art keywords
recording
ink
shaft
recording head
carrier
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
EP90117931A
Other languages
English (en)
French (fr)
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EP0418815A2 (de
EP0418815A3 (en
Inventor
Hirofumi Hirano
Yasuhiro Unosawa
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 Inc
Original Assignee
Canon Inc
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
Priority claimed from JP24107989A external-priority patent/JP2648372B2/ja
Priority claimed from JP1241078A external-priority patent/JP2752722B2/ja
Application filed by Canon Inc filed Critical Canon Inc
Publication of EP0418815A2 publication Critical patent/EP0418815A2/de
Publication of EP0418815A3 publication Critical patent/EP0418815A3/en
Application granted granted Critical
Publication of EP0418815B1 publication Critical patent/EP0418815B1/de
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
    • B41J25/304—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
    • B41J25/308—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print gap adjustment mechanisms
    • B41J25/3082—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print gap adjustment mechanisms with print gap adjustment means on the print head carriage, e.g. for rotation around a guide bar or using a rotatable eccentric bearing
    • 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
    • B41J25/304—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
    • B41J25/308—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print gap adjustment mechanisms

Definitions

  • the ink jet recording apparatus includes not only the elements directly related to the recording operation but also various elements peculiar to the ink ejection type recording.
  • the ink jet recording apparatus inter alia, the recording head
  • the recording head is recently manufactured through a thin film process or microprocessing as in semiconductor chip manufacturing, and, therefore, a small size and low cost recording head is going to be manufactured.
  • a disposable type recording head having an integral ink container, for example has been proposed. Under certain circumstances, a small size and low cost apparatus easily usable by the users is desired.
  • the movement of the recording head is desired to be parallel with a recording medium.
  • the recording head is rotated about an axis to provide a proper gap between the recording medium and the ejection outlet of the recording head. With the proper gap, the position and size or the like of the image formed by the ink droplets are proper.
  • a rotatable lever or another operating member is usually mounted on the recording head or the carrier, and, therefore, the operation thereof is rather difficult particularly in a small size recording apparatus.
  • a problem that the positional relation with a recovery mechanism is deviated.
  • the document DE-A-3 528 926 forming the preamble of the claims 1 and 5, respectively discloses an ink jet printer using a printing head which is movable relative to a sheet bearing member. On one side of the sheet bearing member, there is arranged an ink recovery and capping mechanism which has a cleaning blade, and which can be moved relative to the printing head.
  • the printing head is movable relative to a recording sheet disposed on the sheet bearing member to effect recording on the recording sheet within a recording region, whereas it is movable to the outside of the recording region to oppose the ink recovery and capping mechanism when no recording is to be effected.
  • the object of the invention is to further develop the known ink jet recording apparatus to the effect that the gap between the recording head and the recording medium can be adjusted with high accuracy, whilst the cleaning operation of the recording head is reliably accomplished.
  • the gap between the recording means and the recording medium can be adjusted with high accuracy independently of the positional relation between the recording means and the recovery means. Or, the other way round, the distance between the recovery means and the recording means is maintained constant independently of the gap between the latter and the recording means.
  • Figure 2 is a perspective view of the apparatus of Figure 1, illustrating the major portion of the apparatus without a cover.
  • Figure 3A is a perspective view of the apparatus of Figure 1, illustrating a sheet discharging system.
  • Figures 4A and 4B are side views illustrating different positions of a recording head relative to different recording materials.
  • Figure 10 is a timing chart of operations of various parts of the apparatus according to this embodiment.
  • Figure 11 is a perspective view of a clutch mechanism for transmitting a driving force to the recovery system mechanism, in the apparatus of this embodiment.
  • Figures 16A and 16B are side sectional views illustrating an operation of a pump for a recovery sucking operation.
  • Figure 20 is a front view of a sheet discharging roller.
  • Figure 22 is a side sectional view of the apparatus situated as shown in Figure 21.
  • the part indicated by the reference numeral 106 functions as the recording material inlet.
  • the outer cover 102 can be used as the discharge tray.
  • a positioning hook 105 functions to fix the position of the outer cover 102, designated by a reference numeral 104 are the operation keys and displays.
  • the lead screw 2 has at its right end a shaft 2g coaxially with the lead screw 2, and has a shaft at the left side.
  • the shafts are supported by bearings provided on a front part 1c of the side plate 1b and on the lead arm 1h, respectively.
  • the shafts are rotatably supported by the bearings.
  • a lead pulley 3 is mounted on the lead screw 2 and is provided with the above-described grooves 3b and 3c and a pulley 3a at its end.
  • the pulley 3a receives a driving force from a motor 11 through a timing belt 13.
  • a carrier 6 is supported on the lead screw 2 and is movable along the length of the lead screw 2.
  • the carrier 6 is provided with an urging portion for pushing an end surface of the clutch gear 4, which is formed integrally with a left side of the carrier 6.
  • the carrier 6 has a lead pin 7 engaging with the lead groove 2a of the lead screw 2 and is guided along a guiding opening (not shown) of the carrier 6 for the urging to the lead screw 2.
  • a lead pin spring 8 has an end mounted to the carrier 6 and has the other end urging the lead pin 7.
  • a carrier guiding shaft 51 is slidably engaged with a guiding pin 6b formed on a rear end of the carrier 6.
  • the guiding shaft 51 has an eccentric portion which is rotatably supported on side plates 51b and 51c by a portion 51a of said shaft provided at the opposite ends of the base frame 1.
  • the portion 51a of the guiding shaft 51 adjacent the side plate 51c is fixed to a positioning knob 51d.
  • the positioning knob 51d is generally in the form of a circular disk and is provided, substantially at its center, with a leaf spring 51h in the form of a canti-lever having a channel configuration.
  • the leaf spring 51h is formed by lancing a part of the disk into the channel configuration.
  • Figures 5A and 5B show the structure for providing the constant positional relation between the recording head and the recovery system during the recovery operation.
  • Figures 5A and 5B correspond to Figures 4A and 4B.
  • the engagement between the portion 51a and the pin 6b is effected without change in the height of the engagement position between the shaft 51 and the pin 6b.
  • one of the parallel surfaces of a trapezoidal cam 51g is engaged with the pin 6b.
  • the height of the recording head 9 is always constant, by which the predetermined positional relationship can be maintained between the recovery system and the recording head 9.
  • the rotation of the knob 51d is not limited to the manual rotation, but may be automatically effected by rotating the knob 51d in response to a key input corresponding to the recording sheet to be used, for example, utilizing the driving force of a sheet feeding motor or the like.
  • a carrier motor 11 for driving the carrier 6 is in the form of a pulse motor, for example.
  • the left and right surfaces of the motor 11 are provided with pins 11a at aligned positions.
  • the pins 11a (the right side one is not shown) are rotatably mounted in motor mounting holes of a recovery system base 50 movable on the base frame 1. It is a possible alternative that the pins are provided on the recovery system base 50, and the holes are formed in the side of the motor.
  • the carrier motor 11 is, therefore, rotatable about the pins 11a.
  • a projection 11b is extended integrally from the carrier motor 11 in parallel with the output shaft 12 of the motor.
  • the projection 11b is abutted by a motor spring 14.
  • the projection 11b is provided with a columnar projection to which an end of the motor spring 14 in the form of a coil is fixed.
  • the recording head 9 effects its recording operation while moving along the lead screw 2 by the driving force transmitted through the lead screw 2.
  • the distance between the recording sheet 40 and the recording head 9 is desirably the same irrespective of the position in the movable range of the recording head 9. Therefore, an adjusting mechanism is desirably provided to adjust the distance between the recording head 9 and the recording paper, by which the recording head is shiftable, while maintaining the parallelism relative to the recording paper.
  • an adjusting mechanism may influence the constant positional relation with the recovery system.
  • the position of the lead screw 2 is adjusted at opposite ends thereof by moving the base 50 and by moving the cam plate 50a.
  • the recording head 9 is made movable in parallel with the platen supporting the recording sheet 40.
  • the cam structure may be modified so that the cam plate is rotated about a predetermined axis by operating a pin engageable with a cam slot formed in the cam plate.
  • the carrier motor 11 on the base 50 and the driving system associated with the motor 11, more particularly, the timing belt 13, the pulleys and the lead screw 2, and the recovery system mechanism mounted on the base 50, are moved, by which the position of the lead screw 2 at the recovery system side is adjusted.
  • the lead screw 2 is made parallel with the recording paper, and the recording head can be adjusted for the movement parallel to the recording sheet.
  • the adjusting operations are performed in this embodiment during the manufacturing of the recording apparatus, using an assembling robot.
  • the adjusting operations can be performed by a user after the apparatus is used for a long period of time, or at the time of other repairing operations.
  • a blade lever 16 has a boss 16a rotatably mounted on a setting shaft 15.
  • the blade lever 16 has an arm 16b and a hook 16c.
  • a blade 17 serves to wipe the surface of the recording head at which the ink ejection outlets are formed.
  • the blade is made of silicone rubber, chloroprene rubber or hydrogen containing nitrile butadiene rubber or another elastic material.
  • a blade shaft 18 clamps at its central position the blade 17 in such a manner that the blade 17 extends parallel to the shaft 15.
  • the blade shaft 18 is rotatably mounted on the blade lever 16.
  • a rotatable member 18a is formed integrally with the blade shaft 18.
  • An ink carrier 19 is made of sintered plastic material, urethane foam material or the like, which is hydrophilic and porous, and is fixed to the blade lever 16 at a position below the blade 17.
  • the blade 17 and the ink carrier 19 are placed at such a position that they overlap with the cap which will be described hereinafter, as seen from the head element 9a, so that they are actable on the head element 9a at the same position.
  • the overlapping positional relation is advantageous because it can reduce the width of the apparatus in the scanning direction.
  • a setting lever 20 is rotatably mounted on the setting shaft 15.
  • the setting lever 20 is provided with stopping teeth 20a and 20b, a starting tooth 20c and a rotating tooth 20d.
  • the starting tooth 20c has a thickness (measured in the longitudinal direction of the lead screw 2) which is approximately one half of the width of the other teeth.
  • An arm 20e of the setting lever 20 is partly cut-away in the direction of its thickness, by which a setting surface 20f and a resetting surface 20g are provided.
  • the surfaces 20f and 20g are effective to provide an accommodation for the rotating member 18a of the blade shaft 18 mounted to the blade lever 16, in which the blade 17 is movable between a projected position and a suspending position by the selective engagement of the rotatable member 18a with the surface 20f or the surface 20g.
  • a spring 22 functions to support an ink absorbing material 23 and is fixed to the base 50 at the position shown in Figure 2, that is, at a position below the capping position of the cap. As shown in Figure 7C, it has an absorbing material supporting portion 22a and a spring 22b for rotating the pump which will be described hereinafter.
  • the ink absorbing material 23 is made of a material which is hydrophilic and porous, similarly to the ink carrier 19.
  • the ink absorbing material 23 has a cleaning portion 23a to which the blade 17 is contactable when it moves down.
  • the lower portion of the ink absorbing material 23 is formed into an absorbing surface to which the ink carrier 19 is contacted to transfer the ink.
  • a cylinder 24 has a cylinder portion 24a and a guide portion 24b for guiding a piston shaft 27 which will be described hereinafter.
  • the inner side of the guide portion 24b is partly cut-away in its longitudinal direction to provide an ink passage 24c for residual ink.
  • a projection 24d functions to receive a cap lever and has a lever seal 33 engaged therewith.
  • An ink passage 24e is opened at a predetermined position in the cylinder portion 24a.
  • a rotating lever 24f is formed integral with the cylinder 24 and is urged in the rotational direction by the spring portion 22b of the ink absorbing member supporting spring 22.
  • a residual ink pipe 24g is integrally formed with the cylinder 24, and an end thereof is cut into an acute angle, so that it can be easily inserted into a residual ink absorbing material which will be described hereinafter.
  • An ink passage 24h is formed in the residual ink pipe 24g.
  • a piston seal 26 is inserted into the cylinder 24, and it has a smaller inside diameter to provide a predetermined contact pressure relative to the piston shaft which will be described below.
  • the surface thereof may be coated with lubricating material to reduce the force required to slide the piston.
  • the piston shaft 27 has an operating shaft 27a, a piston confining collar 27b, a piston receptor 27c, a connecting rod 27d and a guide shaft 27e.
  • a groove 27f functioning as an ink passage is formed along the connecting rod 27d and the guide shaft 27e.
  • a rotation stopper 27g is formed as a groove in the operating shaft 27a.
  • a bearing 27h is provided at an end of the operating shaft 27a.
  • a pumping chamber Designated by a reference numeral 42 is a pumping chamber.
  • a piston pressing roller 29 is rotatably mounted at an end of the piston shaft 27.
  • a piston resetting roller 30 is rotatably mounted at the end of the piston shaft 27. These rollers are supported on a pin 31.
  • the cap holder 34 is faced to a hook 34a for engagement with an engaging portion 32e of the cap lever 32.
  • An opening 34b is for mounting the cap 35.
  • a sheet feeding roller 36 for conveying a recording medium such as paper or a sheet of paper is provided. It can be produced by, for example, applying elastic paint (urethane resin or acrylic resin material) on the surface of a drawn aluminum pipe.
  • the roller 36 functions as a platen for limiting the surface of the recording medium on which the recording is effected, by its outer surface, and also functions to accommodate the residual ink at the inside thereof.
  • Residual ink absorbing material 37 is within the roller 36, and it comprises a thin pipe made of plastic material such as vinylchloride or the like and polyester fibers or another absorbing material to enhance the ink absorption in the longitudinal direction.
  • a residual ink pipe 24g of the cylinder 24 is inserted into the residual ink absorbing material 37. Even if the recovery system mechanism is moved by the movement of the base 50, the pipe 24g is supported in the absorbing material 37 in such a manner that the movement is impeded.
  • the fibers of the absorbing material are not liquid absorbing, such as resin or metal, but may be of slightly liquid absorbing nature.
  • Figure 10 is a timing chart, wherein it will be understood that the operational timing of various parts can be determined on the basis of the number of pulses supplied to the motor.
  • the timing gear 21, as has been described in conjunction with Figure 7B, is provided with the starting teeth 21b1 and two different driving teeth 21b2 and 21b3.
  • the teeth 21b1, 21b2 and 21b3 are formed at different positions of the gear 21 in the direction of the width thereof.
  • Figures 12A, 12B and 12C and Figures 13A and 13B show various states of engagement between the clutch gear 4 and the timing gear 21.
  • Figures 12A and 12B show the states which are assumed during the normal recording operation.
  • the lead pin 7 In the state of Figure 13A, the lead pin 7 is not at this position, though.
  • the blade 17 and the ink carrier 19 are disposed, although not shown in the Figure.
  • the ink carrier 19 and the blade 17 slide on the surface of the cleaner 23a of the ink absorber 23, by which the ink received by the ink carrier 19 during the preliminary ejection, the foreign matter removed by the blade 17 from the ejection outlet side surface or the like are received by the cleaner 23a, and, in addition, the droplets of ink deposited on the ejection side surface can be absorbed. Accordingly, the ink absorbing power of the ink carrier 19 can be maintained for a long period of time.
  • a transmission roller 62 is disposed between the sheet discharging roller 60 and the sheet feeding roller 36 to transmit the rotation of the sheet feeding roller 36 to the sheet discharging roller 60.
  • the transmission of the rotation is effected by the friction force provided by the contact therebetween.
  • the sheet discharging roller 60 is generally cylindrical, but the diameter at the opposite end portions thereof is different from that at the central portion.
  • the transmission roller 62 is contacted to the central portion of the discharging roller 60 which has the smaller diameter. Therefore, the opposite end portions having the large diameter and functioning to convey the recording sheet rotate at a larger peripheral speed than the sheet conveying roller 36.
  • the recording sheet is slightly stretched, so that the recording surface can be maintained in good order.
  • the top cover 102 can be used as a stacking tray for the recording sheets.
  • the top cover 102 is fixed at an angle which is different from the angle when the top cover 102 is used as a sheet guide for the supply of sheets.
  • the ink container 9b contains an ink absorbing material 900.
  • An ink supply port 1200 supplies ink to the ejection unit 9a, having the various parts 110 - 800. Before the ejection unit 9a is mounted to a portion 1010 of the ink container 9b, the ink is injected through the supply port 1200, by which the ink is absorbed by the absorbing material 900.
  • the ink is supplied to the supply chamber 600 from the inside of the cartridge through the supply port 1200, a hole 320 of the supporting member 300 and an inlet opening of the supply container 600 at the backside in Figure 24A. From the supply chamber 600, the ink is supplied into the common chamber through a supply pipe and an ink inlet 420 of the top plate 400. In the connecting portions in the ink supply line, suitable gasket made of silicone rubber or butyl rubber or the like is mounted for the sealing to assure the ink supply.
  • Figures 25A, 25B and 25C are a top plan view, a left side view and right side view of the carrier 6.
  • a contact lever 602 is operated when the recording head is to be mounted on or dismounted from the carrier 6. It is rotatably supported on a shaft 601d of the carrier 6.
  • a contact hook 603 is partly contactable to the recording head 9 for the mounting and dismounting of the recording head 9 by operation in engagement with a part of the contact lever 602.
  • the hook 603 has an elongated slot 603c which is guided by a guide pin 601c mounted on the carrier 6 in the mounting and dismounting operation.
  • the mounting and dismounting mechanism including the contact lever 602, the contact hook 603 or the like is disposed at a side of the carrier 6, that is, at a side in the carrier 6 movement direction, and, therefore, the mechanism does not require a large dead space to permit movement of the carrier.
  • An abutment portion 601b is formed at a side and bottom portion of the abutment member 607 to position the recording head in a front-rear direction.
  • the abutment portions 601c are for the positioning in the vertical direction, and two of them are formed at a side and bottom of the abutment member 607 and at a side bottom portion of the supporting plate 606, respectively.
  • Figures 26A and 26B are a top plan view and a side view when the recording head 9 is mounted on the carrier 6.
  • the abutment portion 906a of the recording head 9 abuts the abutment portion 601a of the carrier 6, and simultaneously, the pawl 906e of the recording head 9 is urged toward left in the Figure by the urging force of the coil spring 607a through the hook 603 engaged therewith.
  • the recording head 9 receives a moment about the abutment portion.
  • the substrate 906d of the recording head is abutted to the abutment portion 601f, by which the recording head 9 is correctly positioned in the left-right direction, and the position is retained.
  • the projections 605A of the rubber pad 605 are compressed and deformed by the abutment with the substrate 906d.
  • a press-contact force is produced between the contact pads of the flexible substrate 604 and the contacts of the board 906d.
  • the substrate 906d is contacted to the abutment portions 601f, the amount of deformation of the projections 605A is constant, so that the press-contact force is stable.
  • the recording head 9 In compliance with this movement of the contact hook 603, the recording head 9 is urged at the upper left part in this Figure by the engagement with the contact hook 603. Then, the abutment portion 906a of the recording head slides to abut on the abutment portion 601a, and the contact portion 906b is abutted to the abutment portion 601b. In this state, the substrate 906d and the flexible substrate 604 are not contacted.
  • the contact hook 603 With the further counterclockwise rotation of the contact lever 602, the contact hook 603 is moved further leftwardly. During this, it moves the engaging pawl 906c, and, therefore, the recording head 9 rotates in the clockwise direction about the abutment between the abutment portions 906a and 906b into the state shown in Figure 28C, by which the position of the recording head 9 on the carrier 6 is determined.
  • the mounting of the recording head in this embodiment includes a translational movement and a rotational movement of the recording head, and the angle of rotation is approximately 5 degrees.
  • the recording head Since the recording head is mounted with a small rotational angle, no particular space is required for the mounting of the recording head.
  • the relationship between the lever 602 and the hook 603 during the recording head dismounting process will be described.
  • the contact lever 602 is rotated from the state shown in Figure 26A in a direction opposite from that in the mounting process, the cam surface 602c of the contact lever rotates in contact with the cam surface 603b of the contact hook.
  • the contact hook 603 moves toward the right until the left end of the elongate slot 603c abuts the shaft 601e of the carrier 6. Thereafter, it rotates in the clockwise direction about the shaft 601e.
  • the abutment surface of the contact lever 602 reaches the flat surface 602b, it abuts an end of the cam surface 603b of the contact hook 603, so that the state shown in Figure 25A is reached.
  • the recording head 9 is pushed out by the portion 603d of the contact hook.
  • the present invention is particularly suitable for use with a bubble jet recording head and a bubble jet recording apparatus proposed by Canon Kabushiki Kaisha, Japan.
  • the recording head and the apparatus is of the type disclosed in U.S. Patents Nos. 4,723,129 and 4,740,796 which disclose a typical structure and the operational principle.
  • the structure and the principle are applicable to a so-called on-demand type recording system and a so-called continuous type recording system.
  • the bubble jet structure and principle are suitable for the on-demand type because the principle is, in brief, such that at least one driving signal is applied to an electrothermal transducer disposed on a liquid (ink) retaining sheet or passage, the driving signal being enough to provide such a quick temperature rise beyond a departure from nucleation boiling point, by which the thermal energy is provided to produce the film boiling at the heating portion of the recording head, upon which a bubble can be formed in response to the driving signal.
  • the liquid is ejected through an ejection outlet to produce at least one droplet.
  • the driving signal is preferably in the form of a pulse, because the development and contraction of the bubble can occur instantaneously, and, therefore, the liquid is ejected with quick response.
  • the driving signal in the form of a pulse is preferably such as disclosed in U.S. Patents No. 4,463,359 and 4,345,262.
  • the temperature increasing rate of the heating surface is preferably as disclosed in U.S. Patent No. 4,313,124.
  • the structure of the recording head may comprise the combination of the ejection outlet, the liquid passage and the electrothermal transducer as disclosed in the above mentioned U.S. Patents (linear liquid passage or rectangular liquid passage), or may be the one disclosed in U.S. Patents Nos. 4,558,333 and 4,459,600 in which the heating portion is disposed at a bent portion.
  • the present invention is also applicable to the structure disclosed in Japanese Laid-Open Patent Application No. 123670/1984 in which a common slit is used as the ejection outlets for plural electrothermal transducers, and also to the structure disclosed in Japanese Laid-Open Patent Application No. 138/1984 in which an opening for absorbing pressure waves of the thermal energy is formed corresponding to the ejecting portion.
  • the present invention is effectively applicable to a so-called full-line type recording head having a length covering the maximum recording width.
  • a recording head may comprise a long single recording head or a plural recording heads combined to cover the entire width.
  • the present invention is also effectively applicable to a recording head in the form of an exchangeable chip which is electrically connected with and supplied with ink from the main assembly of the recording apparatus when mounted on the main assembly, or in the form of a cartridge type recording head integrally mounted.
  • capping means for capping the recording head cleaning means for cleaning the recording head, pressure applying means or sucking means for applying pressure to or sucking the liquid in the passage, preliminary heating means using the ejecting electrothermal transducers or by a combination of the ejecting thermal transducer and additional heating means, and means for effecting preliminary ejection of the liquid not for the recording operation. They can stabilize the recording operation.
  • the recording mode of the recording apparatus it is not limited to the record only by a main color such as black.
  • the present invention is effectively applicable to a recording apparatus having an integral recording head or a combination of plural recording heads for the recording operation at least one of the multi-color mode using different colors and a full-color mode using color mixture.
  • the ink has been described as liquid. However, it may be an ink material which is solid at the room temperature or an ink material which is softened at the room temperature. Since in the ink jet recording system, the ink is usually controlled within the temperature not lower than 30 °C and not higher than 70 °C to stabilize the viscosity of the ink to stabilize the ejection, the ink may be such that it is liquid when the recording signal is applied in use.
  • the present invention is applicable to the ink which is liquefied by application of the thermal energy thereto. In an example of such a type, the thermal energy is positively consumed for the phase change from the solid state to the liquid state so as to suppress the temperature rise by the thermal energy.
  • the ink is solidified when left as it is, for the purpose of preventing the evaporation.
  • the ink is liquefied by the application of the thermal energy thereto in response to the recording signal, and the liquefied ink is ejected.
  • the ink already starts to be solidified when reaching the recording medium.
  • Such an ink material may be retained as liquid or solid ink in holes or recesses formed in a porous sheet as disclosed in Japanese Laid-Open Patent Application Nos. 56847/1989 and 71260/1985. In this case, the sheet is faced to the electrothermal transducers.
  • the most effective actuation of the above-described ink is to cause film boiling thereof.

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  • Ink Jet (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Photographic Developing Apparatuses (AREA)

Claims (8)

  1. Tintenstrahl-Aufzeichnungs-Vorrichtung, die ein Aufzeichnungs-Mittel (6, 9) verwendet, um Tinte auf ein Aufzeichnungs-Medium (40) abzuscheiden, das in einem Aufzeichnungs-Bereich angeordnet ist, wobei die Tintenstrahl-Aufzeichnungs-Vorrichtung ein Wiederherstellungs-Mittel (15 - 35) umfaßt, um eine auf der Tinten-Ausstoß-Seite gelegene Oberfläche (9a) des Aufzeichnungs-Mittels (6, 9) zu berühren, um es zu reinigen oder abzudecken, wobei das Aufzeichnungs-Mittel (6, 9) in Bezug auf das Aufzeichnungs-Medium (40) bewegbar ist, um die Aufzeichnung auf dem letzteren innerhalb eines Aufzeichnungs-Bereiches zu bewirken, sowie auf die Außenseite des Aufzeichnungs-Bereiches beweglich ist, um dem Wiederherstellungs-Mittel (15 - 35) gegenüberzuliegen, gekennzeichnet durch eine Achse (51), die mit einem Abschnitt des Aufzeichnungs-Mittels (6, 9) in Eingriff bringbar ist, und die um eine exzentrische Achse drehbar ist, um die positionsmäßige Beziehung zwischen dem Aufzeichnungs-Mittel (6, 9) und dem Aufzeichnungs-Medium (40) zu verändern, wobei die Achse (51) einen exzentrischen Abschnitt aufweist, um die Änderung eines Spalts zwischen dem Aufzeichnungs-Mittel (6, 9) und dem Aufzeichnungs-Medium (40) in dem Aufzeichnungs-Bereich zu verändern, und eine Achse (51a), um eine vorbestimmte positionsmäßige Beziehung zwischen dem Aufzeichnungs-Mittel (6, 9) und dem Wiederherstellungs-Mittel (15 - 35) außerhalb des Aufzeichnungs-Bereichs aufrecht zu erhalten, und zwar unabhängig von dem Spalt zwischen dem Aufzeichnungs-Mittel (6, 9) und dem Aufzeichnungs-Medium (40) in dem Aufzeichnungs-Bereich.
  2. Vorrichtung nach Anspruch 1, gekennzeichnet durch ein Antriebs-Mittel (2 - 5, 7, 8, 11 - 13) zum Bewegen des Aufzeichnungs-Mittels (6, 9) in einer Richtung, die unterschiedlich von der Richtung ist, in der das Aufzeichnungs-Medium (40) gefördert wird, wobei die Achse (51) dazu geeignet ist, das Aufzeichnungs-Mittel (6, 9) zu führen, wenn es durch das Antriebs-Mittel (2 - 5, 7, 8, 11 - 13) bewegt wird.
  3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß das Antriebs-Mittel (2 - 5, 7, 8, 11 - 13) eine Führungs-Schraube (2, 2a) umfaßt.
  4. Vorrichtung nach einen der vorangegangen Ansprüche, dadurch gekennzeichnet, daß das Aufzeichnungs-Mittel (6 - 9) einen elektrothermischen Wandler umfaßt, um Energie zu erzeugen, durch die die Tinte aus dem Aufzeichnungs-Mittel (6 - 9) ausgestoßen wird.
  5. Tintenstrahl-Aufzeichnungs-Vorrichtung, umfassend einen Schlitten (6) zum Tragen eines Aufzeichnungs-Mittels (9), um Tinte auf ein Aufzeichnungs-Medium (40) abzuscheiden, eine Achse (2) zum Führen des Schlittens (6) und ein Wiederherstellungs-Mittel (15 - 35), um eine auf der Tinten-Ausstoß-Seite gelegene Oberfläche (9a) des Aufzeichnungs-Mittels (9) zu reinigen oder sie abzudecken, wobei der Schlitten (6) in einer Richtung beweglich ist, die unterschiedlich von der Richtung ist, in der das Aufzeichnungs-Medium (40) gefördert wird, gekennzeichnet durch ein Bewegungs-Mittel (1h, 1k, 1l, 50, 50a - 50e) zum Bewegen der Achse (2) und des Wiederherstellungs-Mittels (15 - 35) in einem, um einen Spalt zwischen dem Aufzeichnungs-Mittel (9) und dem Aufzeichnungs-Medium (40) anzupassen, wodurch die positionsmäßige Beziehung zwischen dem Wiederherstellungs-Mittel (15 - 35) und dem Aufzeichnungs-Mittel (9) konstant gehalten wird, und zwar unabhängig von der positionsmäßigen Beziehung zwischen dem letzteren und dem Aufzeichnungs-Medium (40).
  6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß das Bewegungs-Mittel (1h, 1k, 1l, 50, 50a - 50e) ein erstes Bewegungs-Glied (50b) umfaßt, um ein plattenartiges Stütz-Glied (50) zu bewegen, auf dem das Wiederherstellungs-Mittel (15 - 35) befestigt ist, sowie ein zweites Bewegungs-Glied (50a), um die Achse (2) zu bewegen.
  7. Vorrichtung nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß das Wiederherstellungs-Mittel (15 - 35) einen Abdeck-Mechanismus (35), ein Reinigungs-Blatt (17) und eine Antriebsquelle (11) dafür umfaßt, wobei die Antriebsquelle (11) eine Drehkraft auf die Achse (2) über einen Übertragungs-Mechanismus (12, 13) ausübt, und wobei die Achse (2) eine Führungs-Schraube (2, 2a) aufweist, um den Schlitten (6) durch die Drehung der Führungs-Schraube (2, 2a) zu bewegen.
  8. Vorrichtung nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, daß das Aufzeichnungs-Mittel (9) einen elektrothermischen Wandler zum Erzeugen von Wärme umfaßt, durch den die Tinte aus dem Aufzeichnungs-Mittel (9) ausgestoßen wird.
EP90117931A 1989-09-18 1990-09-18 Tintenstrahlaufzeichnungsapparat Expired - Lifetime EP0418815B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP241078/89 1989-09-18
JP24107989A JP2648372B2 (ja) 1989-09-18 1989-09-18 インクジェット記録装置
JP241079/89 1989-09-18
JP1241078A JP2752722B2 (ja) 1989-09-18 1989-09-18 インクジェット記録装置

Publications (3)

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EP0418815A2 EP0418815A2 (de) 1991-03-27
EP0418815A3 EP0418815A3 (en) 1992-01-08
EP0418815B1 true EP0418815B1 (de) 1996-12-18

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EP90117931A Expired - Lifetime EP0418815B1 (de) 1989-09-18 1990-09-18 Tintenstrahlaufzeichnungsapparat

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EP (1) EP0418815B1 (de)
AT (1) ATE146405T1 (de)
DE (1) DE69029443T2 (de)
HK (1) HK63697A (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0747227B1 (de) * 1991-12-20 1998-09-09 Seiko Epson Corporation Druckvorrichtung
JP3165722B2 (ja) * 1992-01-20 2001-05-14 キヤノン株式会社 インクジェット装置
FR2699155B1 (fr) * 1992-12-01 1995-03-03 Canon Information Syst Res Dispositif de regroupement ou de stockage de feuilles.
US6771378B2 (en) 1994-10-20 2004-08-03 Canon Kabushiki Kaisha Information processing apparatus which obtains information concerning residual ink amount from an attached ink jet printer
JP3326780B2 (ja) * 1995-04-28 2002-09-24 セイコーエプソン株式会社 プリンタ
KR970000595A (ko) * 1995-06-13 1997-01-21 구자홍 잉크 제트 (ink jet) 프린터의 헤드 갭 (head gap) 조정장치
US6329479B1 (en) 1997-04-17 2001-12-11 Denki Kagaku Kogyo Kabushiki Kaisha Transition metal compound as catalyst component for polymerization, aromatic vinyl compound-olefin copolymer having stereoregularity and method for its preparation by means of the transition metal compound as catalyst component

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Publication number Priority date Publication date Assignee Title
DE2754630C3 (de) * 1977-12-08 1981-02-19 Olympia Werke Ag, 2940 Wilhelmshaven Verfahren und Medium zum Reinigen der Düsenfläche an einem Tintenschreibkopf
JPS60162655A (ja) * 1984-02-03 1985-08-24 Nec Corp インクジエツトプリンタ
DE3528926A1 (de) * 1985-08-12 1987-02-19 Siemens Ag Verfahren und vorrichtung zum reinigen und verschliessen der duesen eines schreibkopfes in einer tintenschreibeinrichtung
ATE86185T1 (de) * 1987-09-09 1993-03-15 Mannesmann Ag Paralleleinstellvorrichtung fuer eine druckkopfschlittenfuehrung zu einem druckwiderlager in druckern, insbesondere in matrixdruckern.

Also Published As

Publication number Publication date
EP0418815A2 (de) 1991-03-27
EP0418815A3 (en) 1992-01-08
DE69029443T2 (de) 1997-06-26
DE69029443D1 (de) 1997-01-30
HK63697A (en) 1997-05-23
ATE146405T1 (de) 1997-01-15

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