JPS60137655A - Ink jet recorder - Google Patents

Abstract

PURPOSE:To set up a printing mode, a supply mode, a pressurizing mode, a circulating mode, and a storing mode by a method in which an opening and closing means and a pump operable in both normal and inverse directions are set on the way of a supply path. CONSTITUTION:The operating states of the pump 56 of an ink supply system and the opening and closing states of valves 50A, 52A, and 54A are switched. The pump 56 is stopped, the valves 50A and 52A are opened, the valve 54A is closed, and ink is supplied to the head 4 (printing mode). The pump 56 is operated normally, and ink is supplied from a tank 40 to a tank 39 (supply mode). The valves 50A, 52A, and 54A are all opened, the pump 56 is operated inversely, and ink is circulated in the direction of R (circulating mode). When only the valve 50A is closed, a pressurizing mode in which ink is pushed out of the nozzle results. When the valves 50A, 52A, and 54A are closed and the pump 56 is stopped, a storing mode results.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] □ The present invention relates to an inkjet recording device, and particularly aims to improve the ink supply device thereof.

[Prior art]

As a conventional inkjet recording device, in addition to the print mode in which ink is ejected from the head onto the recording paper to actually print, there is also a print mode in which the ink supply tank that serves as the ink supply source to the head decreases when the remaining amount of ink is reduced. There is an ink supply device that can be set to a supply mode in which ink is supplied from an ink supply tank provided separately from the ink supply tank to the ink supply tank (
Special Public Shozutsu Tadder No. 6193).

In addition, as another conventional inkjet recording device, an ink supply path is formed from the ink supply tank to the head and back to the ink supply tank, and an opening/closing means and a pump are disposed in the middle of the supply path, and the opening/closing means are disposed in the middle of the supply path. In addition to the above-mentioned print mode, a circulation mode can be set to circulate the ink in the supply channel to remove air bubbles and clogging in the supply channel. There is one equipped with an ink supply and feeding device (Tokuko Shotsutsu 1lI-/Ta9 Kokoku No.).

However, in these conventional 4-ink jet recording devices, each mode can only be set to one mode in addition to the print mode. [Purpose] The present invention has been made in view of this point. By disposing an opening/closing means and a pump capable of MU in both forward and reverse directions in the middle of the supply path, and appropriately switching between the closed state and the operating state, ink can be supplied in addition to the print mode. It is an object of the present invention to provide a highly reliable inkjet recording device with a simple configuration fi17', which is equipped with an ink supply device that can be set to a low mode and a low mode for removing air bubbles, clogging, etc.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings.

For example, the present invention may be applied to a black color inkjet printer, and the inkjet printer has a plurality of print heads in the width direction of the recording paper and prints on demand. shall be printed.

In the first v11, P is a recording paper, and an arrow f indicates the feeding direction of the recording paper P. Reference numeral 2 denotes a unit plate, and seven head ni-elment grooves are provided on both the front and back sides of this unit plate, respectively, over the entire width of the recording area of the recording paper P. Each head element head faces the recording paper P and has 721 ink ejection nozzles in its width direction.

These head elements l are appropriately arranged on both sides of the unit plate, and the recording area by the nozzle of the head niremenge provided in the trap on the front side of the unit plate and the head niremente ge provided in the button on the back side of the unit plate. The recording area by the nozzle ↑ allows one line of recording to be performed without one stroke in the width direction of the recording pfcp. That is,
When recording, first the head element on the back side is driven to record, and the recorded part is f of the recording WcP.
By driving the head element on the front side so as to face the head on the front side as the head element moves in the direction, recording of one line can be performed.

t is a distributor section, which includes a distributor 6m on the outgoing side that supplies the head element 4IK ink through the supply pipe rli-, and a distributor 6B on the backward side that simultaneously collects ink from the head element 4IK through the supply pipe rB. and has.

7 is a joint (hereinafter referred to as DT joint) that connects the distributor 6 and the supply bone t. Each of these parts is referred to as a head unit 0 associated with one predetermined color of ink, and in this embodiment, two head units 10 are provided corresponding to the number of colors of ink.

2/ is a motherboard, and n is a guide member that guides the unit plate and attaches the head unit 10 to the motherboard.

A first tank '30 stores ink and serves as an ink supply source for the head cartridge, and is provided on the side opposite to the head unit 10 with respect to the motherboard.

The rabbit is the λth tank as an ink cartridge tank, and has a pot located on the motherboard, and this liquid level sensor indicates that the ink in the clam tank 30 is below a predetermined sound level. When this is detected, ink is supplied from the second tank Q to the first tank 30. 32'
Th and 34I' are the arm parts of the first tank 30, and the arm part J21C is equipped with opening/closing means SO and j'J' such as electromagnetic valves, and the arm part 34t is equipped with a switchboard of the city valve carrier □stage S4. ! Install the top and bottom pump j6. In addition,
Opening/closing means so': As the so and S4I, in addition to a solenoid valve, an opening/closing throttle, a gate pulp, etc. can be used.

The solenoid valve y is connected to a conduit 40 formed in the arm portion 32 and leading to the ink storage part in the 9° first tongue 3θ, and a joint (hereinafter referred to as a DV joint) leading to the distributor 6A via the motherboard. The solenoid valve j2 has a valve part jOA that connects to the first tank 3o, and opens in response to the energization of the solenoid soB to form the flow path of the finch □. It has a valve part A that connects the chamber and the outside air, and opens in response to the energization of the solenoid 523 to release the air chamber in the "first tank 3θ" to the atmosphere. For example, an anti-lumbar filter S3 may be provided on the atmosphere side of the valve part jη.

The solenoid valve Sa is formed in the arm ml ('f+za,
Joint 7 connecting pipe tl leading to pump j6 and pipe 66 leading to second tank Q, and DV joint 7II connecting the motherboard to distributor 48
It has a valve part j-axis that connects the valve. This valve part jlA becomes a quotient depending on the force of the solenoid 741B, and pump j≦
and the distributor 4B. Note that 7G is a joint (hereinafter referred to as T-0 joint 1) that connects the pipe 6 and the second tank Q.

connection, and in response to one turn in the forward and reverse directions,
Ink is supplied from the valve part sph and the first tank to the first tank 30, and ink is sent to the valve part j411, respectively.

Each of these parts 30, #, 10, 3λ, j44
, j4 Qi! is an ink supply stage for the head unit 10, and in this embodiment, two stages are provided depending on the color type of ink. In the 1st v4, simply /IO
Only shown. The ink supply stages connect them to the head unit 10 via DV joints 70 and 7II, as described above. This connection will be described later.

Further, in FIG. 1, numeral 10 is a connector for a U control section (not shown), which is attached to the motherboard.

ta is an interface board, and rlI is a flexible wiring board that transmits print control signals supplied from the control section to the head element group via the connector 10 and the interface board t-1.

As described above, in the inkjet printer according to the present invention, the head unit, the ink supply stage, and the electric wiring are all configured around the motherboard, making it extremely easy to attach and detach each part.

Next, the liquid level measuring device ifK installed in the first tank 30 will be described.

Fig. 2 shows an example of the configuration of the first tank having a liquid level sensor, and No. JF11J (A) is a plan view thereof, and Fig. 3 (B
) is a sectional view taken along the line A--M' in FIG. In this embodiment, the first tank 30 has a recessed portion 3t, and further has protruding portions n rising from the four portions thereof. As shown in FIG. 3(B), the inside of the protrusion I has a shape that increases in width toward the bottom and is connected to the ink reservoir structure. On the outside of the protruding part @ the wall surface, l pairs of sensors, for example, actual electrode plates 3I, are arranged facing each other, and the electrostatic capacitance between the electrode plates +
& is detected to measure the height of the ink liquid level in the seventh tank 30 and the axis of the ink. As this sensor, if the protrusion 1 is made of a specific material, a photocoupler may be used.Also, as shown in FIG. A protrusion n is provided in the recess 36 so that the ink can be disposed on the outer wall surface of the protrusion n, and #1F!
Since the sensor is placed vertically, ink does not adhere to the inner surface of the protrusion when the ink level decreases or due to vibrations, making it possible to accurately measure the liquid level. In addition, since the inside of the protrusion is made wider toward the liquid surface as shown in Figure 3 (B), it is possible to prevent the liquid level from rising inside the protrusion due to surface tension, making it possible to measure the liquid level. The solution is to further increase the storage capacity. Furthermore, since the detection part is positioned near the center of the tank, it is possible to detect the correct liquid level even if the tank is tilted upward.

Next, I will talk about distributors.

tA4I is an enlarged perspective view of a part of the head unit 10 including the distributor section ≦, and FIG. S is an exploded plan view showing the distributor section t.

In FIG. 5, 4-/ and 5 are respectively t-2 and footer on the upper plate of the distributor 6, which are sheet-like shoes made of rubber, for example. In the figure, t-3 in (0) is the distributor main body, and the pipe-shaped distributor 4
A and 6B are released, and the ink supply chambers 6-3 are connected to the pipes corresponding to the supply pipes jA and 17B, respectively.
A, and 4-JBt in general. Upper plate 4, . 71. ,,
Holes are also provided in the lower plate 4-j, the backing 6-co and 6-4I in correspondence with the supply chambers 6-3A and 4-38 to form an ink supply path to the D-T joint 7. In addition, FIG. S shows the correspondence between the supply chamber and the hole in 1 water.

By providing a distributor for the head element group in this way, the piping that forms the ink supply system becomes extremely simple.

Figure 6 schematically shows an ink supply system consisting of a head unit and an ink supply stage. Here, connect the II Fi second tank and the pipe line 66? A check valve installed on the 7th floor of the 7th tank regulates the flow of ink only in the direction of outflow from the tJXJ tank.

Arrows r and R indicate the direction of ink flow in response to forward and reverse tilting of pump j6, respectively. Further, .mu. and .mu. respectively indicate an air chamber and an ink storage portion in the first tank x.

By configuring the ink supply system in this way, the pump! The ink supply device can be set to each of the following modes by appropriately switching the fast rotation state of ≦ and the 1-closed state of valves SO, tco, and j4I as shown in Table 1.

Table 1 ([Phase] 0→-1C→Closed) Here, ink flow according to each mode and 7-C (1)
Print mode F Ink suitable for printing is supplied from the first tank 301111I to the head element. Note that in this example,
Since it is applied to an on-demand type inkjet printer, no pressure is applied to the ink during printing, and therefore the pump j6 is not driven.

In this case, ink is ejected from the tube 40 in response to ink being ejected from the header. It is supplied to the lower spatula 41 through the valve JO, the D-V diode 70, the distributor J and the supply pipe I.

(2) Supply □ Mode Car Tori □ Mo F supplies Hina Tank JOK ink from Tsuji Tank Shun. 1. %-fa can be used when starting to use an ink shed printer and when the ink in the first line has decreased.

In the sale with , valve j2゛m opens, valve! Since the dam is closed and the pump j6 is rotated in the forward direction K111, ink flows in one direction from the second tank MK through the check valve, pipe 4da, memp j6 and pipe 4t, and flows into the first tank MK. The liquid level in liKi'tanno rises.

(S)' Circulation is used to supply ink to each head during initial use of the device, and to remove air bubbles in the head or supply path. , 61 in the mode used when simultaneously fretting the ink inside them.
Mr. K, who left his inkjet printer unattended for a long time
F room.

Mori, Benso, in this mode! All 341 lines are opened and the lump S4 is turned in the opposite direction, so the ink is
R direction 4/C@/tank x1 tube≦11 pon□fuzt,t
Hta, valve jlA, 'D-V? ! India 7J, Distributor JB, Tube 1 B1 Bed Tei, Tube TM, D-
Vjiyukiin) '10, BensoA died and WA.

After that, the first tank MK will flow. Air bubbles in the head # or the supply path are collected in the 1st tank and are removed from the air chamber 41.
Atmospheric f#c@ is released through jJmu□.

(4) Pressure mode ・' If the nozzle of the header becomes dry, or if a zero knot occurs in the nozzle, pressure is applied to the ink to push the ink out of the nozzle and center it. mode.

In this mode, valve jOm is closed, valves jcom and jdam are open, and pump jj is rotated in one direction: II4 □
Therefore, from Ink Co., Ltd., No. 1 tank〃, in the R direction, pipe 41. It is supplied to the head 41 via the pump j4, the pipe ■, the valve j axis, the D=□V joint 7J, and the distributor JBJ arm IB.

(5) Preservation mode In addition to preventing ink evaporation and deterioration in the seventh tank 30,
This mode prevents ink leakage, and is used when the inkjet printer is not printing or during transportation.

In this mode, since valves zoi, zcom and j4t are closed and pump j4-4 is stopped, there is no flow of ink into the supply path, and no ink leaks from any position. In addition, since all valves are closed, changes in ambient atmospheric conditions, such as changes in the air pressure, can cause the ink in the tank to leak from the head, or air, dust, or mackerel to enter the supply path. do not have.

Figure 7 shows the distributor 6 and the ink supply pipe fA.
An example of the configuration of the connection part (D-'l' joint) with t or rB is shown. Chamber≦
-J and 4-JB are provided, their supply chambers are cut into a cylindrical shape, and "D-! joints 7 having a similar shape are arranged in a direction perpendicular to the plane of the paper. 7 are connected by a flow path.

/443 is a closing member which is slidable in the vertical direction at the D-T joint 7, and the closing member 13 has a closing plate no. It is always biased upward by the spring force of the spring. L da! This is a spring holding member for holding the spring 1.

Note that the supply pipe JAK is provided with a connector 147 at its end. The connecting tool holder 7 is composed of a tube holder/411 that holds the supply WtA in a liquid-tight manner, and a fixing member/$9 that is rotatably fitted to the holder/411K. ! ! Fixing member/
If K is between 4I9 and holder L and between holder/411 and distributor top plate ≦-7.
Attach 10.

Further, the fixing member luda 9 has a male thread shape, and the screw head/41
9m, threaded part/#9B, for example, with a threaded tip part/4I90 having a slotted shape, ink is supplied to the supply pipe 1 and from fB to the ink flow path/41J in the disto saviator 6m and 6B. It has a connecting passageway/IID to guide it.

Next, the attachment/detachment operation of the D-4 joint 7 configured as described above will be explained. Now number 7111! In l,
If the connection state is indicated and the ink flow path/connection is related to the ink supply outgoing path 41, for example, the fixing member 74! ?
Ink can be supplied to the supply pipe 1 through the communication passageway/4L9D. So 1. A state like this (
If you want to remove the connection fitting /419 of the supply pipe #tllll, for example, use screwdriver K and the screw $11. from the threaded hole /1/ of the distributor 4 to the threaded part /#
? Unscrew B. .

As a result, the screw tip 90 is pulled up from the connecting part 14I along the screw hole /j/, but along with this, the closing member l# 31,
is lifted upward by the spring force of the spring d/41, and in the removed state, the member l d 3. 1
The slIIE plate/443-m is brought into contact with the king 6-- by the spring force d, thereby preventing ink from flowing out of this screw hole/jl as well.

In addition, in the case of connection, connect the fixing member #9 of H@tow to the screw hole/! By tightening the screws, the screw tip 9G of the member 1t can be used to push down the Wi-blocking plate/1I3, thereby making it possible to enter the ink supply state.

In this example, we have described the case where the ink is supplied to the distributor 1, but although it is not shown in the illustrated distributor 1, the ink in the distributor 6B is parallel to the ink flow path m. Since a supply return path, that is, a return path and its connecting portion are provided, these connecting portions also constitute the same connecting device. - Next! The DV join 71 that connects the valve and the distributor 6 via the e-board 2 will be explained.

Figure W, 1 shows the relative positions of the members where such front connections are made. At this point, there is an ink passageway, which is fixed to the unit plate, from the cartridge tank Q to the pump stK.
The valve part of the solenoid valve JL! It is necessary to pressurize the tank arm 3# of the Ml tank equipped with the dam and the valve j through the mother board X so that they are both held in the mother mate and the flow paths of both are connected to each other.

FIG. 9 shows an example of the configuration of the connecting portion (DV join) 741. Here, tl can be used to supply ink from tank arm 34I and tank p to the tank/tank by means of tank j4. 5' is this ink passage tl
K is the attached valve part of the solenoid valve, and jlA is its valve body. When the valve portion jfA' is in the open state, the valve element j41m is maintained in the position shown in the figure by the spring force of the retaining spring/67.

By pushing into this position, liquid tightness with the outside is maintained by the backing 161 and the O-ring l≦9.

70 is an intermediate connector which is held on the motherboard, the details of which are shown in FIG. Note that only the right half of the connector/70 is shown here. Here, 1yiB
A bellows-type sealing member, a tube-shaped plug member having a tip end 172A, 173 is a plug holding member, and the center of the plug member 17 and plug holding member /73 has an ink permeability /74I is provided.

However, these seal members /7/, plug member 1
7 and plug holding member/'13 are assembled as shown in the figure, plug member 17.2 and plug holding member -
/73 and the li+ between the plug holding member /7J and the motherboard〃, and between these connections and the holding member 17j for holding the tool /70 on the motherboard〃 and the sealing member /'1/. , a sheet backing/74 made of a material capable of sliding on the contact surfaces, such as Teflon, is interposed.

/'17 is a coil spring installed between the presser member /7j and the spring holding member /71r, and due to the spring force of the spring /77, the plug member is connected via the sealing member /'i/. 17
Ko.

can be pressed against the seat packing 76. Is it? Presser member/? These are mounting screws for fixing the t to the motherboard. .

, Furthermore, the presser foot side I? In the evening, as shown in FIG. 9, adsorbent material made of a water-absorbing porous material is placed along the inner circumferential surface of the distributor 6, and a passageway is formed when the distributor 6 is removed. This prevents ink from dripping from J. ◎ Intermediate connection A 70 is attached to the motherboard in this state, and the side where the tank arm 3 of the plug holding member 3 is attached is exposed. Ring and groove at the end/7
．． If 7A is installed around the tank arm 3 with the solenoid valve installed, use 41 to connect the tank arm 3 with the solenoid valve attached to the intermediate connector 41. Parts/7
By pushing in the protrusion and end of J, the ring groove ttS
The liquid I in the mounting part passes through the O-ring that is fitted into the It is possible to maintain the .

Next, the connection member 16 on the distributor 6 side, which is connected to the intermediate connector/70, will be explained. The connecting member/Ak is a guide path that guides the 17 plug members of the intermediate connector/'10 during connection. #A is attached to the inside of the outer shell member /91 having /A and this outer shell member 19/.

A poppet passage 19λ for ink passage and a passageway is bored in the center of it, and the poppet holding member/9J is
Hold, hold member/? It has a compression coil shingle /91 that biases the poppet lug 3, left, - bed lug 3 toward the backing /Q, which is vertically fitted in the passage J, /9.21. - Therefore, when attaching the distributor t to the intermediate connection member /70, use the poppet of the connection member /jj.

Passage/9. ! By guiding the plug member tip 172A, which has a grooved shape on the outside of the connecting device/7Q, to A, the tip L? -Go de Bopetsu l' 1942
>! It is pushed up, and the ink passage shown in FIG. 9 can be brought into a conductive state. In addition,! ? 6 is an O ring provided on the outer shell member 191. ,, Also, connect the distributor t to the middle, connecting tool/70
When removing it from the plug member 17, the connecting member 14j of the distributor t may be pulled out from the plug member 17. Thus, from K, the plug member l7 is the guide path/? /AK, and the poppet /93 can be pressed against the backing /941 by the spring force to keep the heel liquid tight.

Incidentally, since the connecting portion between the 4PsO and the distributor 4 can be constructed in the same manner as shown in the figure, the explanation thereof will be omitted.

An example of the structure of the joint of the first tank of Company 1/H (A) and Company (B) is shown, and this example is an example in which the connection is held by a leaf spring attached to the mother board. . Jinkode, KoO
/ and K0- are leaf spring members having a symmetrical shape, and the leaf spring members -〇l and JOJ in this example each have two bending parts and are obtained by two folding parts K. The curves are formed so that the angles are right angles.

That is, in Figure (A), the flat plate part 0/mu and J
O/Bs Also, the flat plate parts JOJ and KO are perpendicular to each other, and the flat plate parts JO/ and KO are
K is the mounting seat formed by bending -〇to and 20JCJ
These mounting seats 010 and 2020 are fixed to the motherboard J7 using screws JOJK.

ζHere, the flat plate parts λ0/B and 20Jf3 are supported so as to be displaceable on the flat plate part 20/ and on the com through the arm parts ko4I and 10B, respectively.
The connecting portion 01 can be elastically held in the state shown in FIG. 12 by being held between both the flat plate portions 0/B and 102B.

204-shaped flat plate portions 20/B and 102B to connect the leaf spring members O/ and -202 to the connecting portion 201 [This is a fixing screw for attaching the #j1. Continuation member JOjmu's tjI4Kt
Provide a 2-piece mounting seat 〇4mm, screw the fixing screw 06 into this mounting seat 〇4mm, and attach the flat plate part 〇0/B.
In this example, the connection member 201 of the ink supply tube 46 is connected to the 12th
As shown in the figure, Kff Zazad JI K If! ! The set leaf spring member 20/and the combination k of JOJ) are held, and therefore the spring member 20/and the combination k of JOJ are held.
Due to the spring force of the connecting member 203, the first
v4 (support) falsifies displacement in a plane including the XX direction and the Y-Y direction.

If the ink supply tube is connected in this way, even if the position of the connection member JOj'B is slightly shifted in the vertical direction or the front and rear direction of the page in this figure, The connecting member J6jA on the t-side is the plate □ Spring member 2
By being held by 0/and 202 K, such! Since the position can be accommodated in the spring member 201°, it appears that the connection is impossible.
Here is an example of a clumsy connection being made. Here, the first tank changer has guide members ko/l and ko 12 on both sides, and a second tank changer is provided on the pushing side WU-〇VA.
A connecting member OjB is provided for connecting the tank 07 to the ink passage.

Therefore, one guide member -1/ is formed in two stages, upper and lower, and in this example, the upper member J// is made longer and is provided on the back side with respect to □ in the pushing direction, and the lower member // Shorten B to provide a hand in the pushing direction. Therefore, the pushing side end J of the member column and J//B
The lower surface of /10 and /D is tapered, and the other end of the one-piece member //H and end of /D are tapered.
The RFC with /D is k so that the space part co/J is obtained.

Figure 1 shows the storage part of the main unit #II- in which the first tank replacement is installed, where J/$ is the storage part where the first tank replacement can be freely pushed in and pulled out, and JIA and JI8 are the 1
This is article #E to guide you through the process. To the play, Ko/!
is, for example, a ratchet member provided on the @wall/dam of the storage section #1, and #ij is the rotation axis of the ratchet member -lj.

As shown in Figure B, the ratchet member lj has one curved part lj! It has locking flj ko/jo and tlK formed at axially symmetrical positions by K and K, and one parallel surface ko/jD, and when the 1igx tank is pushed to the seated position W, 1 This ratchet part #'J/S is K so that □ space part Ko/J K <.

Therefore, we will now install the second tank on the rail 211 and the second tank.
When inserting the ratchet member into the hangar along /jB, the ratchet member /j is kept on its parallel surface /jDt- by the guide member //AK, and the ratchet member /j is kept on its parallel surface /jDt-, and the ratchet member /j is kept on its parallel surface /jDt- by the guide member /jB. The end portion C//D of the guide member C//B comes into contact first.

Thus, by end-2//D, ratchet member-7
! is rotated clockwise, and when the end 2//D is locked and guided, the pushing of the tank is stopped. On the other hand, the motherboard at the back of the storage compartment
is provided with a compression spring J/7, and when the end 2//D of the guide member KO//B is locked in the locking groove KO/jo, this compression spring J/7 is used to release the compressed tank. Trying to get 9 back.

However, in this operation, due to the simultaneous movement of the ratchet member Jlj in the clockwise direction, the end part of the guide member Jlj comes into contact with the locking groove 2'110 as shown in No. ny4. , the tank monk will be able to maintain the attached state MK by obtaining such a securing relationship.Next, when removing the tank mount, the front side of the tank egg -〇7
B1i - By applying slight pressure (T), the guide member // B end J// D to the ratchet member J/
l is further rotated clockwise to release the locking state with the tank elevation, and is returned by the spring force of spring J//, ratcheting at end 2//E of guide member J//A. Part J/
1 is rotated in the clockwise direction, and the ratchet member is kept parallel to the lower surface of the guide member J. In addition, with this withdrawal operation,
It goes without saying that the connecting member J0 and the tank B provided with the tank are removed at a connecting portion of the ink supply system (not shown).

(1 margin below) [Effects] As explained above, according to the present invention, the first tank is provided as an ink supply source, the first tank pipe is provided as an ink supply source for the first tank, and During the loading of the ink supply path, the ink supply path is equipped with three opening/closing means and a pump that can be operated in both forward and reverse directions, and the opening/closing states and operating states of these opening/closing means and the pump can be appropriately switched, in addition to print mode □. , supply mode, pressurization mode 4, circulation mode,
Since the ink supply device is configured so that it can also be set to the storage mode, it is possible to realize a highly reliable inkjet recording device with a simple configuration.

[Brief explanation of the drawing]

FIG. 1 is a T perspective view showing an example of the configuration of an inkjet recording apparatus to which the present invention is applicable; FIG. 1 is a perspective view showing an example of the configuration of a liquid level measuring device in the inkjet recording apparatus shown in FIG. Figures (2) and ω) respectively show its flat l11iv! J and sectional views, tI & 2 are perspective views showing an enlarged part of the head unit including the distributor in the I'kuji' Tetki Recording System wK shown in Fig. 7, and JN(A) to (2) are FIG. 6 is an exploded plan view of the distributor, and FIG. 6 is a fluid circuit showing an example of the ink supply system 41111i in the inkjet recording apparatus shown in FIG.
- Figure 7 shows the inkjet recording device w1.
A cross-sectional view showing an example of the structure of the joint between the distrivier and the supply M pipe in □, and Fig. A perspective view and a cross-sectional view showing a part of the structure of the joint part, and FIG.
i. 11 items. 1, 7, 71.7, 9° A front view and a sectional view showing an example of the structure of the joint of the second tank in the inkjet recording device, 12th pHJ is a perspective view of the joint, Hn figure (2) and ( B) is a side view and a plan view, respectively, showing an example of the configuration of the λ-th tank in the inkjet recording device shown in Figure 1, and Figure 11 is a diagram showing the configuration of the storage section of the second tank in the inkjet recording device shown in Figure 1. A plan view showing an example; FIG. 8 is a side view showing an example of a ratchet as a locking member for the second tank in the wt/illustrated inkjet recording apparatus. C...Unit plate, D...Head element, ≦A, ≦B...Distributor, 7...D-T
In, jB... ink supply pipe, 10... head unit, X... motherboard, 30... first tank, n... protrusion, 3j... sensor, f6- ...Second tank, so, s2. sa-gel valve, 56...lump, ! t...Check valve, ? 0,74! -D-V J5 I7t, 72...T-V joint, 7t...O-T joint, /4IJ...Closing member, 741 D...spring, /D9...Connection Ingredients, 17! ... Pressing member - /76 ... Seat backing, 193 ... Poppet, /9 Hiroshi ... Backing, /91 ... Spring, λoi, Ko0ko ... Leaf spring, λOj, ...・Connection part, Column, Co//B...East facing member. -No! ...Ratchet, ・Co17...Spring. Fig. 7 +50 149 149A Fig. 8 0 Fig. 10 172A Fig. 11 (A) -1 ノ2゜ Fig. 15 Fig. 13 (A)

Claims (1)

[Scope of Claims] l) A head that absorbs ink and performs recording, a first tank that stores ink to be supplied to the head, and a first tank that stores ink that is supplied to the first tank. and (1) a first transport means disposed between the first tank and the head and forming a first transport path for ink; and a first transport means disposed in the middle of the first transport means, the a seventh transport path Tr--a first opening/closing means that can be shut off; a first transport means that is disposed between the first tank and the head and forms a first transport path for one ink;゛. a first IN opening/closing means disposed in the middle of the second transportation means and capable of blocking the first transportation route; a first IN opening/closing means between the first tank and the first opening/closing means It is disposed on the transportation means and has a first port communicating with the seventh tank and a second port communicating with the a-th opening/closing means, and the ink is transferred from the first port to the first port. a pump connected to the first tank and operable in a first direction for transporting ink toward a first port and a first direction for transporting ink from a first port to a first port; a backflow prevention means for regulating the flow of ink only in the direction in which the ink flows out from the tank; an inkjet recording device characterized by comprising a third opening/closing means capable of opening the air chamber to the atmosphere. Open the opening/closing means of 3,
An inkjet recording apparatus characterized in that a print mode for recording can be set by closing the first opening/closing means and stopping the pump. 3) In the inkjet recording apparatus according to claim 1 or 1, opening/closing means for the seventh and section 3-. is opened, the first opening/closing means is closed, and the pump is operated in the first direction, thereby setting the supply mode to supply ink from the first tank to the first tank. An inkjet recording device characterized by being able to. In the inkjet recording apparatus according to any one of claims 1 to 3, the second to third ONFJ r'! + by opening the means side by side and operating the pump in the first direction;
Circulating ink? ? An inkjet recording device 7'/ characterized in that it can be set to iM mode.
. (ii) In the inkjet recording apparatus according to any one of claims 1 to 9, the first opening/closing means is closed, the first and third opening/closing means are opened, and An inkjet recording device 06 characterized in that by operating the pump in the first direction, it can be set to a pressurizing mode in which ink is pressurized.
) In the inkjet recording apparatus according to any one of claims M1 to 1, ink is stored by closing all of the first to third opening/closing means and stopping the pump. An inkjet recording device characterized in that it can be set to a storage mode. (υbottom, margin)