JP2005111939A - Maintenance device of ink head - Google Patents

Maintenance device of ink head Download PDF

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Publication number
JP2005111939A
JP2005111939A JP2003352344A JP2003352344A JP2005111939A JP 2005111939 A JP2005111939 A JP 2005111939A JP 2003352344 A JP2003352344 A JP 2003352344A JP 2003352344 A JP2003352344 A JP 2003352344A JP 2005111939 A JP2005111939 A JP 2005111939A
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JP
Japan
Prior art keywords
ink
cap
unit
head
maintenance
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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.)
Withdrawn
Application number
JP2003352344A
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Japanese (ja)
Inventor
Tatsuhiro Ishise
Makoto Shibano
Masanobu Shimizu
誠 柴野
正信 清水
達弘 石瀬
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Olympus Corp
オリンパス株式会社
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Application filed by Olympus Corp, オリンパス株式会社 filed Critical Olympus Corp
Priority to JP2003352344A priority Critical patent/JP2005111939A/en
Publication of JP2005111939A publication Critical patent/JP2005111939A/en
Application status is Withdrawn legal-status Critical

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Abstract

A conventional ink head maintenance device has a problem that since the entire device is retracted laterally from the conveying belt, the entire image forming device is large and it is difficult to reduce the installation area.
In the present invention, an oil pan that is movable in the front-rear direction is arranged in a space between head rows 1A to 1D that are divided into a plurality and are provided at equal intervals along the front-rear direction perpendicular to the transport direction. In the image forming apparatus, maintenance units 4A to 4D and a cap portion 7 are arranged on the oil pan in the same manner as the arrangement of the head units 2 of the head rows 1A to 1D, respectively, and maintenance units 4A to 4D and This is an ink head maintenance device that realizes downsizing of the image forming apparatus by retracting the cap unit 7.
[Selection] Figure 1

Description

  The present invention relates to a maintenance device for maintaining ink heads and nozzles of an inkjet image forming apparatus that forms an image by ejecting ink onto an image forming medium.

  In general, an image forming apparatus using an ink jet head performs printing by ejecting ink from the head nozzles of the ink head. Therefore, in order to prevent the nozzles from being clogged with ink regularly or according to the number of prints, maintenance is performed. Is required.

  This maintenance includes suction maintenance that removes and prevents nozzle clogging by sucking ink remaining from the nozzles, wiping maintenance for removing dirt on the nozzle formation surface and ink droplets attached by suction maintenance, and dedicated installation There is spitting maintenance for forcibly ejecting ink to the ink receiver.

  Among these maintenances, Patent Document 1 proposed by the present applicant discloses a technique for performing spitting maintenance. As shown in FIG. 9, there is disclosed an ink head portion 71 including four head blocks 71A, 71B, 71C, 71D disposed in an oblique direction along the paper transport direction (D direction). In each of the head blocks 71A to 71D, three pairs of ink head units 73 are fixed in two rows on the support substrates 72A to 72D so as to overlap in an oblique direction with respect to the transport direction D. Each ink head unit 73 includes a pair of nozzle rows, and incorporates a piezoelectric element that ejects ink droplets.

  As shown in FIGS. 10 and 11, the recovery processing device (maintenance device) 75 for maintaining the ink head unit 73 is provided with a maintenance cap 77 so as to face each ink head unit 73. The recovery processing device 75 is disposed adjacent to the side of the head portion 74 that houses the ink head portion 71, and is configured to slide by a moving mechanism (not shown).

FIG. 11 shows a state in which maintenance by the recovery processing device 75 is being executed. At the time of maintenance, the head unit 74 is lifted away from the paper transport system, and the recovery processing device 75 is inserted into the gap by the moving mechanism. In this state, each ink head unit 73 and the cap 77 are made to face each other, and recovery processing by ink ejection is performed.
Japanese Patent Laid-Open No. 2002-120386, FIGS. 4 and 7, paragraph number [0075]

  When performing the recovery process, the recovery processing apparatus shown in FIG. 10 of Patent Document 1 can clean all the ink ejection surfaces of the ink head unit 71 at the same time, thereby enabling a quick recovery process. On the other hand, during the printing operation, the entire recovery processing device 75 is retracted from the conveyance belt 76 in the horizontal direction. This achieves a compact paper transport system. On the other hand, the main body of the recovery processing device 75 needs to have an arrangement area equal to or larger than that of the head unit 73 so that the ink does not scatter to other components. For this reason, when the head unit 73 is retracted when not in use, the entire image forming apparatus becomes large, and it is particularly difficult to reduce the installation area. In addition, the maintenance method is by spitting and wiping, and suction maintenance is not performed.

  Accordingly, the present invention recovers ink ejected during maintenance of a plurality of ink heads arranged so as to overlap with each other in the transport direction without scattering, and realizes downsizing of the image forming apparatus main body. An object of the present invention is to provide a maintenance device.

  In order to achieve the above object, the present invention provides a plurality of ink heads for ejecting ink from a plurality of arranged nozzles and drawing an image on an image forming medium conveyed by a platen unit. In the ink head maintenance device of an image forming apparatus having head units arranged in a plurality of rows so as to overlap, the nozzle rows are respectively arranged at positions facing the ink ejection surface and are assigned to the ink ejection surface. Each of the head units is arranged at equal intervals along the transport direction of the image forming medium to be drawn, and the cap is placed in each of the spaces at the time of drawing. An ink head maintenance device for retracting a part is provided.

  Furthermore, the ink head maintenance device includes the cap unit and a maintenance suction unit that sucks ink adhering to the ink ejection surface of the head unit, and the nozzle of the head unit ejects the ink other than during image formation. An oil pan that receives and collects ink; a maintenance movement unit that moves the oil pan in a direction perpendicular to the transport direction; a slide movement unit that supports the oil pan and moves the oil pan in the transport direction; An elevating frame that suspends the cap portion and the maintenance suction portion so as to be able to move up and down; and a platen elevating portion that elevates and lowers a platen portion for transporting the image forming medium. Due to the sliding movement by the moving part, the cap part is retracted into the space during drawing. It is allowed, at the time of or during maintenance standby time or stopped state, sealing the ink ejection surface by the cap portion.

  In the ink head maintenance device configured as described above, the cap unit is in close contact with the ink ejection surface of the head unit in the standby state or in the stop state, and prevents the nozzle from drying. Retreated in the space between adjacent head units.

  According to the present invention, ink that collects ink ejected during maintenance of a plurality of ink heads arranged so as to overlap with each other in the transport direction without being scattered, and realizes downsizing of the image forming apparatus main body. A head maintenance device can be provided.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view of a conceptual configuration of an embodiment according to a head row maintenance apparatus of the present invention as viewed obliquely from above. In the present embodiment described below, a nozzle that ejects ink for image formation, a nozzle array in which a plurality of nozzles are arranged in a row, a surface on which nozzle rows are provided, a nozzle formation surface, and a nozzle The formation surface and its peripheral part (head frame surface) are the nozzle formation region (or ink ejection surface), the one provided with one nozzle formation region is the ink head, and the head is composed of two ink heads integrally A unit, a unit in which a plurality of head units are arranged is referred to as a head row, and a unit in which a plurality of head rows are two-dimensionally arranged is referred to as a head (ink ejection unit). Further, in the following embodiments, the medium transport direction is described as the X-axis direction, the Y-axis direction orthogonal to the horizontal direction is defined as the front-rear direction, and the Z-axis direction orthogonal to the vertical direction is described as the vertical direction.

  The head unit 2 in the image forming apparatus of the present invention is an ink jet type image forming apparatus that discharges minute ink droplets from a plurality of nozzles arranged over the entire medium width and draws and outputs an image (color or black and white). . As shown in FIG. 1, it is roughly divided into four groups of head rows 1A, 1B, 1C, and 1D for each color (black, yellow, magenta, and cyan), and the like in the conveyance direction of the image forming medium. It arrange | positions at intervals (space S). In this example, each of the head arrays 1A to 1D is composed of six head units 2 in three lines in the front-rear direction (Y-axis direction), and the arrays of nozzles 3 slightly overlap so that there is no gap during image formation. So that they are staggered. In the head rows 1A to 1D of the present embodiment, the head units 2 are arranged in two rows by dividing into four blocks. Of course, the head units 2A to 1D are not limited to this example. The arrangement form can be changed. For example, in this embodiment, since four colors of ink are used, four blocks are divided. However, if five colors are used, five blocks may be divided, or the same color may be divided into a plurality of blocks. Also, the head unit 2 may be combined with more than the two ink heads.

Each head unit 2 of the head arrays 1A to 1D is provided with an equally spaced space on the support 22 as shown in FIG. 5 so that the ink supplied from the ink supply system 13 is lowered from the ink discharge port of the nozzle 3. It is suspended and arranged to discharge in the direction (Z-axis direction).
As shown in FIG. 1, the maintenance apparatus is provided with maintenance units 4A, 4B, 4C, and 4D that are divided into four blocks so as to correspond to the positions of the head rows 1A to 1D. These maintenance units 4A to 4D have six maintenance suction parts on an oil pan (suction part mounting support part) 5 arranged so as to be accommodated in each space S provided at equal intervals between the head rows 1A to 1D. 6 is arranged to match the arrangement of the head unit 2 described above. In this embodiment, the head unit 2 is disposed so as to face one end side, and the maintenance operation is performed. The oil pan 5 is provided to collect the ink discharged during maintenance so that it does not scatter to other components.

  A cap portion 7 is disposed in each space in the front-rear direction between the maintenance suction portions 6. The cap unit 7 is addressed so as to cover the ink ejection surface of the head unit 2 when the head unit 2 is in a standby state or stopped state where image formation is not performed. By covering the ink ejection surface with the cap portion 7, the nozzle 3 is prevented from drying, and other components such as a platen belt due to careless ink dripping are prevented. Therefore, it is preferable to always cover the ink discharge surface except when the head unit 2 is operating.

  The maintenance units 4A to 4D and the cap unit 7 are retracted to the space S during image formation (state shown in FIG. 1) as will be described later, and are taken out during the maintenance operation and are respectively ejected from the ink discharge ports of the head units 2. Opposite to. The ink sucked by the maintenance suction unit 6 and the ink collected by the oil pan 5 are collected in a waste liquid tank 25 (not shown).

  A plurality of suction ports 9 are arranged on the upper surface of these maintenance suction parts 6 and are connected to a negative pressure generation part 10 including a suction pump and the like, and face each other in the vicinity of an ink discharge surface (not shown) of the nozzle 3. When sliding, the ink adhering to the ink ejection surface is sucked from the suction port 9.

  Further, a wiper 14 for wiping the ink ejection surface of the nozzle 3 during sliding movement is attached on the upper surface of the maintenance suction unit 6 and in front of the suction port 9. The wiper 14 is formed of an elastic member such as rubber, resin, or the like. In the present embodiment, the rubber is formed in a plate shape, and the ink is wiped by sliding the rubber tip after contacting the ink discharge surface of the nozzle 3 in a bent state. Further, at the center of the arrangement of the suction ports 9, a positioning guide 13 for contacting the guide groove 12 provided at the center of the head unit 2 and maintaining the positional relationship between the suction ports 9 and the ink ejection surface during sliding. Is provided.

  The oil pan 5 is supported by parallel side frames (first support members) 17 so that front and rear ends (Y-axis direction) can be slid in the front-rear direction by a support member (not shown). These side frames 17 are respectively formed with oval slits 18 on both ends in the transport direction. Further, a lifting frame (second support member) 20 having a slit 19 formed in a vertical direction (Z direction) orthogonal to the slit 18 of each side frame 17 is fixed to an image forming apparatus main body frame (not shown). Further, the slits 18 and 19 of the side frames 17 and the lifting frame 20 are overlapped and fitted by a connecting portion 21 made of screws or the like.

  The side frame 17 is connected to a slide moving unit 24 including a moving mechanism such as a motor and a gear, so that the side frame 17 can move along the conveying direction integrally with the oil pan 5. The onl pan 5 is slidable in the front-rear direction, and is connected to a maintenance moving unit 8 including a moving mechanism including a motor, a gear, and the like, and the maintenance suction unit 6 is attached to the ink ejection surface of the nozzle 3 during maintenance. Driven to move along. Further, an up-and-down moving unit 23 is provided that is connected to the oil pan 5 or the side frame 17 and moves the maintenance suction unit 6 up and down. In the present embodiment, the up-and-down moving unit 23 is also used as a platen lifting unit 55 described later.

  With such a configuration, the oil pan 5 on which the maintenance units 4 </ b> A to 4 </ b> D (the maintenance suction unit 6 and the cap unit 7) are placed is suspended from the lifting frame 20 via the side frame 17. The maintenance units 4 </ b> A to 4 </ b> D can be moved along the conveyance direction by the slide mechanism unit 24 shown in FIG. 1, and can be moved in the vertical direction by the up-and-down movement unit 23.

  In FIG. 2, the specific structural example of the said cap part 7 is shown. 3A shows a state in which the cap unit 7 is brought into contact with the head unit 2, and FIG. 3B shows a state in which the head unit 2 is being cleaned by the maintenance suction unit 6. .

  The cap portion 7 includes a base portion 31 fixed to the oil pan 5, spring fixing portions 31 a for fixing two coil springs 32 provided on the base portion 31, and a cap base connected to the coil spring 32. A portion 33 and a cap 34 made of an elastic member having corrosion resistance, such as fluoro rubber, which is detachably placed on the cap base portion 33.

  The cap base portion 33 is provided with two protrusion-shaped holding portions 33a for holding the cap 34 on the upper surface thereof. The cap 34 is provided with holes for fitting with the holding portions 33a. When the cap 34 is put on the cap base portion 33, the cap 34 is fitted and fixed to the holding portion 33a. Further, a protrusion that contacts the guide groove 12 of the head unit 2 shown in FIG. 1 is provided on the upper surface of the holding portion 33a, and is used for alignment.

  Further, on the upper surface of the cap 34, three holes 35 used as air holes or discharge holes for discharging ink dropped from the head unit 2 to the oil pan 5 are opened in order to easily separate from the sealed head unit 2. Has been. Further, on the upper surface of the cap 34, as shown in FIG. 2A, two grooves 36 that are opposed to the respective nozzle rows when being in contact with the head unit 2 are provided. By providing these grooves 36, when the head unit 2 is directed to the cap portion 7, even if ink is accidentally dripped from the nozzles 3, it falls into the grooves 36, so that it remains attached to the ink ejection surface. Ink can be prevented from solidifying. Further, the cap 34 is pressed against the ink discharge surface by the elastic force of the coil spring 32, the nozzle and the cap surface are not in contact with each other, the nozzle row can be sealed, and the drying prevention effect can be enhanced.

  As shown in FIG. 3B, the ink receiving surface of the cap base portion 33 is provided so as to have an inclination θ in the longitudinal direction (front-rear direction) with respect to the ink discharge surface of the maintenance suction unit 6. . This inclination θ is provided in order to make it easier for ink drops hanging on the cap 34 to flow down into the oil pan 5, and may be, for example, 1 to several degrees, considering contact with the head unit 2. Preferably, it is provided to have an inclination of about 1 degree. In principle, this inclination may be in any direction as long as the droplet receiving surface of the cap base portion 33 is inclined. In this embodiment, since the holding portion 33a is provided, the holding portion 33a is inclined rearward in the longitudinal direction.

  FIG. 4 shows a modification of the cap portion 7 described above.

  The cap portion 7a of this modification uses a cap 37 provided with a convex frame portion 38 around the upper surface of the cap 34 described above. Other configurations are the same as those of the cap portion 7 described above.

  By using this cap 37, it is possible to enhance the sealing property on the ink ejection surface to prevent drying, and the ink dripping from the nozzle 3 can be dropped into the groove 36, thereby preventing the ink from adhering to the ink row. it can.

  Next, FIGS. 5 to 8 are diagrams for explaining the movement of the cap portion in the maintenance process for the image forming apparatus of the present embodiment. First, with reference to FIG. 5, the main part of the medium transport system of the image forming apparatus will be described.

  The medium conveyance system of the image forming apparatus is roughly divided into an image forming medium supply unit 40, a platen unit 50, and a discharge unit 60. In the image forming medium supply unit 40, a medium tray 42 for storing the image forming medium 41, a pickup roller 43 for picking up the medium 41 from the medium tray 42, and an inclination of the picked up medium 41 are eliminated so as to follow the transport direction. A registration roller pair 44 to be corrected, and a supply roller pair 45 for supplying the medium 41 to the platen unit 50 side.

  The platen unit 50 is provided inside, defines a reference position for image formation of the medium 41 to be conveyed, opposes the nozzle 3, and has a suction function for the medium 41 being conveyed, and a platen frame 51. A platen exterior frame 52 to be accommodated, a platen belt 53 that is hung on the entire outer periphery of the platen exterior frame 52 and transports the medium 41 to the platen frame 51, and rotates in the direction of the arrow while applying a predetermined tension to the platen belt 53 And a platen belt roller 54.

  Further, the platen unit 50 removes or repairs the image forming position (FIG. 5), the cap position (FIG. 3A), the maintenance position or the standby [stop] position (FIG. 8), and the medium 41 by the platen lifting / lowering unit 55. It is raised and lowered to the height of four stages of the jam processing position for performing etc. Although the jam processing position is not shown, the platen frame 51 is the lowest position.

  The platen lifting / lowering portion 55 includes an arm 56 that rotates so that at least four upper end portions 56a simultaneously have the same height, and these upper end portions 56a support the bottom surface of the platen exterior frame 52 so as to be movable. . Further, by placing the side frame 17 of the maintenance device on the platen exterior frame 52, the side frame 17 can be lifted and lowered while being guided by the slit 19 of the lift frame 20 as the platen exterior frame 52 is lifted. it can.

  The medium discharge section 60 stores a discharge tray 59 for storing the image-formed medium 41, a discharge section transport roller 57 for discharging the image-formed medium 41 from the platen section 40, and allows the discharge tray 59 to store the medium 41. It is comprised with the discharge part discharge roller 58. FIG.

Next, the operation of the maintenance device will be described.
First, FIG. 5 shows a state in which the maintenance device during normal image formation is retracted. As described above, the side frame 17 is pushed up by the platen elevating unit 55 via the platen exterior frame 52, and the maintenance suction unit 6 and the cap unit 7 are retracted so as to be stored in the space S between the head rows 1A to 1D. Has been.

  Next, when the user instructs maintenance on the operation panel of the image forming apparatus (not shown), or when the maintenance is automatically executed by setting the number of processed sheets and the accumulated processing time, a platen as shown in FIG. The arm 51 of the raising / lowering part 55 is rotated so that it falls, and the arm upper end part 56a falls. Accordingly, the platen exterior frame 52 and the side frame 17 are lowered. This lowering is temporarily stopped at the position where the upper surfaces of the maintenance suction unit 6 and the cap unit 7 are slightly lowered from the ink discharge surface of the head unit 2.

  Next, as shown in FIG. 7, the side frame 17 is moved to the upstream side in the transport direction by the slide mechanism unit 24 (see FIG. 1), and the upper surface of the maintenance suction unit 6 faces the ink ejection surface of the head unit 2. Stopped at position. Then, as shown in FIG. 8, the arm 56 of the platen lifting / lowering portion 55 is rotated to raise the arm upper end portion 56a, and the side frame 17 is lifted together with this, and the cap unit 7 (FIG. 3 (a)) ) Abut and stop (cap position). At this time, the protrusion-shaped holding portion 33a is positioned in contact with the guide groove 12 of the head unit 2 shown in FIG. 1, and the ink discharge surface (nozzle row) of the head unit 2 is sealed. Alternatively, at the position lowered from the cap position, the maintenance suction portion 6 (see FIG. 3B) contacts the head unit 2 and stops (maintenance position). At this time, the position guide 13 comes into contact with the guide groove 12 of the head unit 2 shown in FIG. 1, and a slight gap is formed between the ink discharge surface (nozzle row) and the suction port 9 of the maintenance suction unit 6. Only the wiper 14 is in contact with the ink ejection surface (see FIG. 3B).

  Next, maintenance units 4 </ b> A to 4 </ b> D arranged on the oil pan 5 are slid under the head rows 1 </ b> A to 1 </ b> D by the maintenance moving unit 8. At this time, a spitting process for forcibly ejecting ink may be performed. Along with this sliding movement, the suction port 9 that is suctioned by the negative pressure generating unit 10 from the nozzle 3 while the wiper 14 wipes the ink discharge surface of the nozzle 3 on the ink discharge surface of the head unit 2 (wiping maintenance). The remaining ink is sucked (suction maintenance) and collected in a waste liquid tank (not shown) (see the waste liquid tank 25 shown in FIG. 1). The ink scattered at this time is collected by an oil pan 5 provided below the base frame 7 and sent to a waste liquid tank (not shown).

  In the maintenance apparatus described above, since the maintenance units 4A to 4D and the cap unit 7 are retracted in the space S between the head rows 1A to 1D during normal image formation, they are retracted to the side of the conventional platen. The image forming apparatus can be downsized with an installation area. Further, since the cap portion is disposed adjacent to the head rows 1A to 1D, the moving distance until the cap is applied to the ink ejection surface of the head unit 2 in the standby state and the stopped state is shortened, and The time is shortened until the user becomes short, and the waiting time is short and convenient for the user.

  Furthermore, since the raising and lowering of the cap part is performed by the driving part of the platen raising and lowering part that raises and lowers the platen part, the driving part is simplified and the configuration is simplified, and the weight of the apparatus can be reduced and the cost can be reduced. Further, since the maintenance suction portions are arranged in one-to-one correspondence with the ink heads, all the ink heads can be maintained by a single sliding operation.

  Note that the present invention is not limited to the above-described embodiment, and can be appropriately modified and combined with respect to the constituent parts without departing from the disclosed gist. In the embodiment described above, in the maintenance units 4A to 4D, the example in which each cap portion is arranged in the oil pan and integrally performs the cap operation has been described, but the cap operation may be performed for each head row. For example, if there is a structure that has a vertical movement mechanism that operates for each head row and that is higher than that at the time of ink ejection when stopped, if only black (B) ink is used for document printing, etc. The cap portion of the head row that ejects ink may be removed and lowered to form an image (character), and the head row that ejects ink of other colors may be kept covered by the cap portion. According to this configuration, the ink heads that are not used are kept in the capped state, so that it is possible to prevent damage or the like due to a jam that occurs when not in use. Of course, the constituent parts of the described embodiments may be combined, and some constituent parts may be deleted from the constituent parts as desired.

It is the perspective view which looked at the notional composition of one embodiment concerning the maintenance device of the ink head of the present invention from the slanting upper part. It is the perspective view which looked at the composition of the cap part of this embodiment from the slanting upper part. FIG. 3A is a diagram showing a state in which the head unit is sealed with the cap portion, and FIG. 3B is a diagram showing a cleaning state of the head unit by the maintenance suction unit. It is a figure which shows the modification of the cap part of this embodiment. It is a figure which shows the state which the maintenance unit of the maintenance apparatus of this embodiment evacuated. It is a figure which shows the state which the maintenance unit of the maintenance apparatus of this embodiment is moving. It is a figure which shows the state which the maintenance unit of the maintenance apparatus of this embodiment is moving. It is a figure which shows the state by which the maintenance unit of the maintenance apparatus of this embodiment was arrange | positioned in the maintenance position. It is a figure which shows the example of arrangement configuration of the ink head in a prior art. It is a figure which shows the evacuation state of the structural example of the recovery processing apparatus in a prior art. It is a figure which shows the state which performs the maintenance by the recovery processing apparatus in a prior art.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1A-1D ... Head row, 2 ... Head unit, 3 ... Nozzle, 4A-4D ... Maintenance unit, 5 ... Oil pan, 6 ... Maintenance suction part, 7 ... Cap part, 8 ... Maintenance moving part, 9 ... Suction port, DESCRIPTION OF SYMBOLS 10 ... Negative pressure production | generation part, 12 ... Guide groove, 13 ... Positioning guide, 14 ... Wiper, 17 ... Side frame, 18, 19 ... Slit, 20 ... Lifting frame (2nd support member), 21 ... Connection part, 22 DESCRIPTION OF SYMBOLS ... Support body, 23 ... Elevating moving part, 24 ... Slide moving part, 31 ... Base part, 31a ... Spring fixing part, 32 ... Coil spring, 33 ... Cap base part, 33a ... Projection-shaped holding part, 34 ... Cap, 35 ... hole, 36 ... groove.

Claims (7)

  1. A head in which a plurality of ink heads for ejecting ink from a plurality of arranged nozzles and drawing an image on an image forming medium conveyed by a platen unit are arranged in a plurality of rows so that the nozzle rows overlap. In an ink head maintenance device of an image forming apparatus having a unit,
    Each of which is disposed at a position facing the ink discharge surface, and has a cap portion that is assigned to the ink discharge surface and seals the nozzle row,
    The head units are arranged at equal intervals along the conveyance direction of the image forming medium to be drawn, and at the time of drawing, the cap unit is retracted in each of the spaces. Maintenance equipment.
  2. In the ink head maintenance device,
    An oil pan that receives and collects ink ejected by the nozzles of the head unit other than during image formation, with the cap unit and a maintenance suction unit that sucks ink adhering to the ink ejection surface of the head unit. When,
    A maintenance moving unit that moves the oil pan in a direction perpendicular to the conveying direction;
    A slide moving unit that supports the oil pan and moves it in the transport direction;
    An elevating frame that suspends the cap part and the maintenance suction part so as to elevate,
    A platen elevating unit that elevates and lowers a platen unit for conveying the image forming medium,
    The elevating operation by the platen elevating unit and the sliding operation by the slide moving unit cause the cap unit to be retracted into the space at the time of drawing, and the ink ejection surface is moved by the cap unit during the standby state or the stopped state. The ink head maintenance device according to claim 1, wherein the ink head maintenance device is sealed.
  3. In the ink head maintenance device,
    The cap part is
    A base portion fixed to the oil pan;
    A cap for sealing the ink discharge surface of the ink head;
    A cap base portion on which the cap is detachably attached;
    An elastic member connecting the base portion and the cap base portion;
    A holding portion provided on the cap base portion, having at least one protrusion for holding the cap on the cap base portion and positioning the ink head when the ink head is sealed;
    The ink head maintenance device according to claim 1, further comprising:
  4. In the ink head maintenance device,
    The ink head maintenance device according to claim 2, wherein the maintenance suction part and the cap are arranged on a straight line in the maintenance movement direction.
  5. In the ink head maintenance device,
    The ink head maintenance device according to claim 2, wherein the ink head maintenance device is disposed at a position higher than the cap portion than the maintenance suction portion.
  6. In the ink head maintenance device,
    When the entire circumference of the cap upper surface of the cap portion is not in close contact with the ink ejection surface of the head unit, at least an inclination is provided in any direction substantially parallel to the maintenance movement direction. The ink head maintenance device according to claim 3.
  7. In the ink head maintenance device,
    4. The groove according to claim 3, wherein the upper surface of the cap has a groove at a position facing a nozzle row arranged in the ink discharge surface when the head unit is in close contact with the ink discharge surface of the head unit. Ink head maintenance device.
JP2003352344A 2003-10-10 2003-10-10 Maintenance device of ink head Withdrawn JP2005111939A (en)

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Cited By (10)

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Publication number Priority date Publication date Assignee Title
JP2007190816A (en) * 2006-01-19 2007-08-02 Fuji Xerox Co Ltd Liquid droplet delivery apparatus
JP2009107221A (en) * 2007-10-30 2009-05-21 Kyocera Mita Corp Inkjet recorder
JP2009178846A (en) * 2008-01-29 2009-08-13 Brother Ind Ltd Recorder
JP2011073154A (en) * 2009-09-29 2011-04-14 Brother Industries Ltd Liquid ejection head
JP2011173432A (en) * 2011-06-01 2011-09-08 Brother Industries Ltd Inkjet recorder
EP2364854A1 (en) 2010-03-10 2011-09-14 Ricoh Company Ltd. Image forming apparatus
US8277014B2 (en) 2008-12-24 2012-10-02 Brother Kogyo Kabushiki Kaisha Ink-jet recording apparatus
US8336983B2 (en) 2008-12-22 2012-12-25 Brother Kogyo Kabushiki Kaisha Ink-jet recording apparatus for dealing with jams of recording media
CN104401128A (en) * 2009-07-31 2015-03-11 扎姆泰科有限公司 Printing system with fixed printheads and movable vacuum platen
CN106739514A (en) * 2017-01-16 2017-05-31 广州市裕田机械制造有限公司 The many shower nozzle automatic flushing devices of printing machine

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007190816A (en) * 2006-01-19 2007-08-02 Fuji Xerox Co Ltd Liquid droplet delivery apparatus
JP2009107221A (en) * 2007-10-30 2009-05-21 Kyocera Mita Corp Inkjet recorder
US8147031B2 (en) 2008-01-29 2012-04-03 Brother Kogyo Kabushiki Kaisha Recording apparatus
JP2009178846A (en) * 2008-01-29 2009-08-13 Brother Ind Ltd Recorder
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