JPH0299335A - Liquid jet recording apparatus - Google Patents

Abstract

PURPOSE:To certainly hold the stability of a recording element by resetting a recording head at a predetermined position when recovery processing is performed after opening and closing operation is performed and applying capping. CONSTITUTION:Opening and closing operation is performed by a method wherein a carriage 2 is subjected to slight reciprocating operation, that is, said carriage 2 is moved to the right from a cap position to be again returned. Thereafter, an atmosphere communicating operation flag is turned ON and an exciting state is released in order to prevent the heating of a carriage motor to stop holding. When atmosphere communicating operation is finished, the excitation of the carriage motor is out off and there is no security such that the atmosphere communicating hole 6b of a cap 6 is in a closed state. Then, the atmosphere communicating hole of the cap is closed by again applying capping and, thereafter, recovery operation is taken for the first time. That is, the carriage is certainly moved to the home position before the recovery operation is taken. When atmosphere communicating operation is not finished, since the phase of the motor is low voltage but a hold state is kept, the atmosphere communicating hole 6b is certainly closed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a liquid jet recording device, and particularly to a recording liquid (
The present invention relates to a so-called serial type liquid jet recording apparatus (hereinafter referred to as an inkjet recording apparatus) that performs recording while scanning a recording medium in a predetermined direction with a recording head having an ejection port for ink (hereinafter referred to as ink).

[Prior Art] Conventionally, in this type of inkjet recording device, the recording elements provided in the recording head mounted on the carriage, etc., suffer from problems such as an increase in ink viscosity due to evaporation of the solvent component of the ink from the ejection ports. This can cause clogging of the ejection ports, resulting in poor recording or poor ejection, so the ejection port forming surface of the print head is covered with a cap when no printing operation is performed.

Some inkjet recording apparatuses include a mechanism that performs capping in conjunction with the movement of a carriage carrying a recording head to a predetermined position (for example, Baum position). According to this, a special drive source such as a motor is not required to move the cap member, so there are advantages in terms of simplifying the device configuration and reducing configuration costs and running costs.

[Problem to be Solved by the Invention] In such a configuration, in order to prevent the recording element from drying out during standby after recording is completed, the recording head is forcibly removed from a predetermined position after a predetermined period of time has elapsed. If this is detected, a capping operation is performed. At this time, the phases of the carriage motor that drives the carriage are excited with a low current.

After that, as the temperature of the recording element rises due to the capping operation and the saturated vapor pressure of the ink in the area blocked by the cap rises to R1, a difference in air pressure occurs between that area and the outside, and the ink near the ejection port increases. Since the surface tension of the recording medium is no longer maintained, which may cause recording failure, the atmosphere is communicated with the atmosphere after a certain predetermined period of time has elapsed. After this, the phase hold of the carriage motor was stopped in order to prevent the temperature of the carriage motor from rising.

On the other hand, if a recovery operation instruction is received from the information input section within a predetermined time after capping, for example, a recovery operation that also serves as a paper feed motor (for example, for recovery operation by suction)
A configuration is also adopted in which, in response to the reverse rotation of the motor, ink is sucked from near the ejection port to perform a recovery operation.

However, in the above conventional example, the atmospheric communication operation and the recovery operation were activated independently, so the information and human resources department issued an instruction for the recovery operation in the standby state, and the If the communication operation is performed, it is possible that the carriage motor is not held.

Therefore, the carriage may be deviated from the home position (the position of the carriage where the recovery operation is normally performed), and the recovery operation after the standby communication operation may not operate normally.

SUMMARY OF THE INVENTION An object of the present invention is to solve this problem and enable the recovery operation to be performed normally, thereby ensuring the stability of the recording element.

[Means for Solving the Problems J] In order to achieve the above object, the present invention provides a liquid jet recording apparatus that performs recording while scanning a recording medium in a predetermined direction with a recording head having recording liquid ejection ports. , a cap member capable of covering the ejection port forming surface of the recording head provided with the ejection ports, and a mechanism for causing the ejection port forming surface to be covered by the cap member in connection with the operation of setting the print head to a predetermined position. a transmission member, a recovery means that performs ejection recovery processing by forcibly discharging recording liquid from an ejection port at a predetermined position, and a drive means that is a driving source for scanning so that the recording head is locked at a predetermined position. an opening/closing means for opening and closing the space closed by the capping to the atmosphere when the capping state in which the cap member covers the discharge port forming surface continues for a predetermined period of time; the second for stopping the drive of the drive means afterward;
It is characterized by comprising a control means and a third control means for resetting the recording head to a predetermined position prior to activating the recovery means after opening and closing.

[Function] According to the present invention, the recording head is reset to a predetermined position when performing the recovery process after the opening/closing operation is performed. Then, since capping is performed along with this, the recovery process is started in a state where the capping is reliably performed.

Therefore, even if the power to the motor is cut off when capping continues for a predetermined period of time in order to suppress the heat generation of drive means such as motors during recording standby, the head cannot be positioned at the correct position, making recovery processing impossible. Such inconveniences can be prevented.

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

FIG. 1 is a main part of an inkjet recording apparatus according to an embodiment of the present invention, and FIGS. 2 and 3 are a side sectional view and a front view, respectively, of a cap portion disposed in the ejection recovery mechanism in FIG. 1. 4 is a schematic diagram of the cap portion, and FIG. 5 is a side view of the rubbing portion provided in the discharge recovery mechanism in FIG. 1. The mechanical configuration of this embodiment will be explained using these figures.

1 is an inkjet recording head (hereinafter referred to as a recording head or simply head) that uses thermal energy to form ink droplets for recording; 2 is a carriage to which the head 1 is fixed; is moved left and right by a timing belt integrated with the carriage 2 in accordance with the drive of a carriage motor (not shown), and recording is performed on the recording medium 4 in the process. 5 is an auxiliary shaft for stopping the rotation of the carriage 2 at Ip.

A recovery system is provided to stabilize the ejection of ink droplets from the ejection ports of the head l. When the head 1 does not perform recording for a predetermined period of time (5 seconds in this embodiment), the ejection port forming surface of the head 1 is sealed with a cap 6 to prevent ink from failing to eject due to ink sticking to the nozzles.

The mechanism of sealing with this cap 6 is shown in FIG. The cap 6 is held by a cap holder 7, and the cap holder 7
is held in the holder 8.

A spring 9 is interposed between the cap holder 7 and the holder 8, and is secured by an E-ring 10 (FIG. 2) so that the head 1 is brought into close contact with the cap holder 7 with an appropriate force. A dowel 8a is provided in a part of the holder 8, and a spring 12 (FIG. 2) is stretched between the dowel 8a of the flat cam 11 and the dowel 8a. The cap holder 7 and the holder 8 are movable in the left-right direction in FIG. 2, and the slider 13 is movable in the direction perpendicular to the plane of the paper.

A cap 6, a cap holder 7, and a holder 8 are held by the slider 13, and the slider 13 is attached to the cap shaft 1.
4 along with the carriage 2 to the left in FIGS. 1 and 3. At this time, the dowel portion 8 of the holder 8
a is the cam surface 11b of the flat cam 11 (Fig. 1, 3
2), the holder 8 is brought into pressure contact with the front, that is, the ejection port forming surface of the head l. Note that the pressing force at this point is about 300 g. During this pressure contact, the air valve 6a, which is a dowel portion of the cap 6, comes into contact with the stopper 15, as shown in FIGS. 3 and 4. Note that this stopper 15 is held by an E-ring 16 and a spring 17, and the contact force is about 120 g.

In this state fi, as shown in FIG.
is closed by the stopper 15, and the atmosphere communication hole 6b is closed. On the other hand, the large recovery cap tube 18 is closed by means described later, and the large recovery hole 6c is also closed.

The waste ink cap tube 19 in FIG. 1 is connected to a pump 20, and when the piston 21 moves downward in the D direction, negative pressure is generated in the pump 20, and the inside of the cap 6 that is pressed against the head L is also Negative pressure is generated, and ink is forcibly sucked through the ejection port of the head l.
Dust, a fixed layer of ink, etc. inside the ejection port are sucked into the cap 6, and the phenomenon of the head 1 not ejecting is eliminated. While the piston 21 is rising from the bottom dead center to the top dead center, the inside of the pump 20 is pressurized, and the ink sucked from the cap 6 passes through the waste ink tube 22 as waste ink to the waste ink intake port. The waste ink is discharged from 23a to the waste ink reservoir of the ink cartridge 23. When waste ink is discharged, there is no pressure change to the cap 6 due to the structure of the pump.

In this state, the ink sucked from the nozzle of the head 1 is still in the cap 6 and the waste ink cap tube 1.
If the surface tension of this adhered ink is greater than the ink ejection force, ink may not be ejected or the blade 24 may be damaged, which will be described later. When in contact, the recording medium 4 may be contaminated by ink scattering, resulting in a significant deterioration in recording quality.

In order to solve this problem, in order to remove the ink adhering to the ejection port forming surface (face surface) of the ink head 1 inside the cap 6, the air valve 6a of the cap is opened while the cap 6 and the head 1 are in pressure contact. The carriage 2 is moved slightly to the right (2 mm in this embodiment) so as to release the carriage 2 from contact with the stopper 15, and the pump unit is operated in this state. The atmosphere communication hole 6b is provided in an L-shape as shown in FIG. 4, and is installed above the cap 6 as shown in FIG.
Air is drawn into the cap 6 through the cap. Since air flows from the upper side of the cap 6 to the lower side where the waste ink cap tube 19 is attached, the ink inside the cap 6 and the ink attached to the face surface of the head 1 are removed. After that, the face surface of the head 1 is rubbed by a means described later by protruding a rubbing member 25 when the carriage 2 moves from left to right to remove ink and stains from the face surface and improve the ejection stability of the head 1. secure.

This rubbing mechanism is shown in FIG. Oval shaped rubbing holder 26
A ring-shaped rubbing member 25 is inserted into the ring-shaped rubbing member 25 , and the rubbing holder 26 is attached to the rubbing slider 27 with a spring 28 . It is held by an E-ring 29, and the rubbing member 25 is movable in the horizontal direction to move the head 1.
Approximately 100g of pressure (approximately 100g in this example)
) to rub while applying pressure. The protrusion of the rubbing slider 27 is performed by a cam, which will be described later, and the return to the original position utilizes the restoring force caused by the elastic deformation of a portion 27a (Fig. 5) of the slider 27 (Fig. 5). . In addition,
The rubbing member 25 is made of, for example, an ether-based polyurethane with continuous pores.

In order to further ensure the ejection stability of the head 1, a blade 24 (see FIG. 1) is used to remove paper powder or other dust that adheres to the ejection port during recording.

(Figure 3). In this example, this blade is made of flexible silicone rubber with a wall thickness of about 0.3+n+n. This blade 24 is connected to the side plate 30 of the main body of the device.
Since the plate holder 31 is pressed and fixed to the plate holder 31 and always protrudes, wiping by the blade 24 is always performed when the head moves in front of the plate holder 31.

During the recording operation, the slider 13 is returned toward the side plate of the main body (to the right) by the slider return spring 32, and is brought to a position determined by the position where the part 13b of the slider 13 abuts the end of the part 30a of the side plate of the main body. Cap 6 is set. Also,
During the recording operation, in order to prevent unused ejection ports of the head 1 from sticking, the head 1 is returned to the position where the cap 6 is waiting, and all nozzles are driven wJ (dry ejection) at predetermined intervals. Also at this time, wiping by the blade 24 is performed as the head 1 moves back and forth. Naturally, wiping by the blade 24 is also performed in connection with the suction-based recovery operation and large recovery.

When dry ejection is performed, the dowel 8a of the holder 8 is in contact with the lower surface of the cam surface 11b of the flat cam 11, so the cap 6 and the head 1 are separated, and the ejected ink is removed from the cap 6. It is absorbed and held by the polymer absorbent body 33 inside the pump, and is absorbed toward the pump 20 when the pump 20 is operated. In addition, part 1a of the head 1 and the slider 13
The carriage 2 moves to the left, and the dowel 8a of the holder 8 climbs the slope of the cam surface 11b of the flat cam 11, bringing the cap 6 and head 1 into pressure contact, and a capping operation is performed. be exposed.

Next, the cam operation will be described. When the paper feed motor of the recording apparatus main body (not shown) rotates in the normal direction, the paper feed motor has the function of feeding the paper, but when it rotates in the reverse direction, the paper feed roller shaft 3
4 and recovery system drive gear 35 are rotated together in the direction of arrow A by a clutch spring 36, a cam gear 38 is rotated via an idle gear 37, and a cam shaft 39 integrated with the cam gear 38 rotates a rubbing cam 40. ．． pump cam 41.4
2 and the home position cam 43 rotate. here,
A groove is provided on the surface facing the pump cams 41 and 42 so that both ends of a parallel pin 44 integrally connected to the piston 21 of the pump 20 can slide therein. pump cam 41
．． Denoted at 42 is a positive cam, and the rotation of these cams causes a parallel pin 44 to slide, thereby operating the piston 21 in the D direction. When the power source is 08:00, the recovery system drive gear 35 rotates, the home position cam 43 also rotates, the home position switch 45 is turned on, and the cam group is initialized.

The recovery operation by suction described above is called a small recovery and is performed when the non-discharge can be easily resolved, but if the non-discharge cannot be easily resolved due to ink sticking to the ejection port of the head 1, the large recovery operation is performed. The position of the head 1 during a large recovery is such that the air valve 6a of the cap 6 is in contact with the stopper 13 and the air communication hole is maintained in a closed state. 211II11 This is where I moved to the left.

Here, the mechanism of the large recovery operation will be explained based on FIGS. 1 and 3. A portion 11b of the flat cam 11 allows the slider 13 to smoothly slide in the direction of movement of the carriage 2, and a portion 13b of the slider 13 can engage with a portion 46b of the lever 46. A fulcrum portion is provided in the middle of the lever 46, and this fulcrum portion is supported by a support portion 47a to enable the lever 46 to rotate. A large recovery valve 48 is installed near the other end of the lever 46, and the protrusion 4 of the lever 46
6a. Spring 50 for lever 46
is provided, and therefore a restoring force is obtained after the slider 13 is moved leftward.

When the carriage 2 is moved 2 mm8i1J to the left from the position where the small recovery operation is performed for the large recovery operation, the portion 13b of the slider 13 and the lever portion 46b engage, and the spring 5
The lever 46 rotates against the biasing force of 0, and the large recovery valve 48 is accordingly driven by the projection 46a. This large recovery valve 48 has an ink supply tube 4 as described above.
9 is attached, and as it is driven, ink is led out to the ink supply port of the cap 6 through the tube 18. That is, at this time, the face surface of the recording head 1 is cleaned with ink.

Here, the arrangement of the tubes will be explained based on FIG. 1.

An ink outlet 23b is provided at the top of the ink cartridge 23.
There is a three-way joint, one of which
Ink is co-supplied from the two ports through the tube 51 toward the head l. Ink can also be supplied to the large recovery valve 48 via a tube 49 connected to the three-way joint.

On the other hand, the ink collected by the pump 2o during the small recovery or large recovery is guided to the waste ink reservoir in the ink cartridge 23 via the waste ink tube 22.

Next, the configuration of the entire control system of the inkjet recording apparatus according to this embodiment will be explained.

FIG. 6 shows an example of the configuration of the control system. In the figure, 1001 is a host computer or data transfer device that sends print image data line by line in the horizontal direction (recording direction), and the image data for each line to the printer is determined by a trigger signal 1016 from the control unit 1002. is transmitted at a clock rate of .

Reference numeral 1002 denotes a control unit that controls the entire printer, including an MPU 1002-1, such as a microprocessor.
In addition to the ROM 1002-2, which stores the control program of M P 01002-1, the control procedures shown in the flowcharts described later, data, etc., the ROM 1002-2 stores the control program of M P 01002-1, the control procedures shown in the flowcharts described later, data, etc., as well as the ROM 1002-2, which is used as a mark area and which is used to calculate the paper width and the number of data according to the paper width. RAM 1, which includes an area to store the counted value and the total number obtained by calculating the total number of receiving lines according to the counted value.
002-3, a counter 1002-4 for counting the number of paper feeds and the number of carriage feed pulses. M P U 1
Timer 1 (102-5, I10 boat that inputs and outputs various data and control signals) measures time in response to instructions from 002-1, and outputs an interrupt signal to M P 01002-1 when the instructed time is counted. 1002-6 etc.

1003 converts the image data sent from the host computer 1001 to at least the number of recording elements of the head 1 (
In this embodiment, image data from the host computer or data transfer device 1001 is sequentially stored in the image buffer memory 1003 under the control of the control unit 1002.

1004 includes a counter 1004-1 that can set the number of received image data for one line, and when the control unit 1002 receives the set number of data, it outputs a detection signal 1017 to IIJ.
This is a receiving circuit that outputs to the 1'JB section 1002. Further, this receiving circuit 1004 is equipped with a black dot discriminating circuit that can identify the presence or absence of a black dot.

1005 is a line corresponding to the number of recording elements of the recording head l (for example, 128
This is a data converter that reads out data for each line (128 dots) in the vertical direction one by one (128 dots) and outputs it in accordance with the recording position of the head 1. Recording head 1 has 12
8-dot recording elements are arranged in one row and are scanned in the horizontal direction to perform recording.

A driver 1007 drives the printing elements of the printing head 1 based on print data from the data converter.

1008 is a carriage motor that horizontally scans the carriage 2 on which the head 1 is mounted; 1009 is a control unit 100
This is a carriage motor driver that drives the carriage motor 1008 based on data No. 2. Reference numeral 1010 is a paper feed motor that can feed paper in units of the pitch of the recording elements of the head 1, and 1011 is a driver that drives the paper feed motor 101Q. Reference numeral 10!2 is a cassette motor for a cassette feeder, which feeds paper from a cassette in response to an instruction from the host computer or data transfer device 1001 or a designation from a key panel 1014-1 in the information management department 1014, which will be described later. be exposed. 1013 is a drive driver that drives the cassette motor. Carriage motor 1008. The paper feed motor 1010 and the feed cassette motor 1012 are constituted by stepping motors in this embodiment.

Reference numeral 1014 denotes an information processing unit that sends various information to the control unit 1002, and this information is output to the control unit 1002 in response to a detection signal 1018. Reference numeral 1014-1 is a key panel that can specify the size of a recording medium such as paper, and can specify a paper size such as A4 or BS. Reference numeral 1014-2 is a paper END sensor used to position the leading edge and detect the trailing edge of the recording medium during paper feeding. 10
14-3 is a paper width detection device, which can be mounted on the carriage. For example, this paper width detection device 1014-
3 is used to detect the width of the fed paper and prevent it from recording at a position other than the recording medium. Reference numeral 1014-4 is a cassette paper presence/absence detection unit that detects whether or not a paper cassette feeder is attached. Next, 1014-6 is an ink cartridge 23 that supplies recording ink to the recording head 1.
This is an ink presence/absence detection section that detects the presence or absence of ink. Further, 1014-7 is an ink cartridge presence/absence detection unit 1014-7 that detects the presence/absence of the ink cartridge 2°3.
Reference numeral 8 denotes a multi-feeder paper presence/absence detection unit that detects whether or not there is paper in the multi-feeder. 1015 is a command signal such as paper size instructed by the host computer or data transfer device 1001;
The paper size can be specified not only from the computer 4 but also from the host computer 1001.

1014-9 is a pump home position detection unit that determines the reference position of the cap mechanism and pump mechanism specific to the inkjet recording apparatus; 1014-10 is a carriage home position detection unit that determines the reference position of the carriage 2 on which the recording head 1 is mounted; 1014 -11 is a door opening/closing detection unit provided in the main body for detecting opening/closing of a door.

FIG. 7 shows an example of a printer control procedure during standby according to this embodiment.

When it is determined that no data will be input from the host computer or data transfer device 1001 for a predetermined period of time (5 seconds in this example) after a series of recordings has been completed (step S2), if the face of the head 1 is exposed to the atmosphere. Since the ink inside the ejection opening of the head sticks and causes ejection failure, the face of the head 1 is capped to isolate it from the atmosphere to prevent the ink from sticking (step S3).

Next, it is determined whether there is an instruction for recovery operation from the information human resources unit 1014 shown in FIG. 6 (step S4), here,
If capping is performed for a long time without this instruction, the pressure in the sealed space in front of the face of the head 1 will rise due to the heat of the head and the temperature inside the device, and the meniscus inside the discharge port will not be able to be maintained. As a result, ink may leak from the head 1, and in severe cases, it may become impossible to record. Therefore, if the capping state continues for a predetermined period of time (for example, 1 minute) without the above instruction, the atmosphere communication hole 6b is opened to equalize the pressure on the face surface with the atmosphere, and then the atmosphere communication hole 6b is closed (step 5
ll). This opening/closing operation is a minute reciprocating movement of the carriage 2.
That is, this is performed by moving the carriage 2 from the cap position to the right in FIG. 1 and then returning it again. After that, turn on the atmosphere communication operation flag, and turn on the carriage motor 1.
In order to prevent heat generation of 008, the excitation state is canceled and the hold is stopped (step 512).

On the other hand, if a recovery operation is instructed, the recovery operation flag is turned on (step S5). Then step S
It is determined whether or not the atmosphere communication operation according to the drive of the carriage motor 1008 by ll has been completed based on the on/off state of the atmosphere communication operation flag. If this is the case, the phase of the carriage motor has been completely released from the hold state, and the carriage 2, which was in the fixed state, is affected by the biasing force of the slider return spring 32 in the right direction in FIG. The load due to the force of the spring becomes greater than the frictional force between the carriage 2 and the carriage shaft 3, causing it to move to the right in Fig. 1, making it impossible to perform a subsequent recovery operation. It ends up.

If the above-mentioned atmosphere communication operation is completed, the excitation of the carriage motor 1008 is cut off, and the atmosphere communication hole 6b of the cap 6 is turned off.
This is because there is no guarantee that the is in the closed state. Therefore,
In the present invention, capping is performed again to close the atmospheric communication hole of the cap (step S7), and only after that does the recovery operation (small recovery) begin. That is, after the carriage is reliably moved to the home position, the recovery operation (step Sa) is started. On the other hand, if the atmospheric communication operation has not been completed, the motor phase is in a hold state although the voltage is low, so that the atmospheric communication hole 6b is reliably closed. Therefore, at this time, the recovery operation can be started without performing the capping operation. After the recovery operation is completed, the atmosphere communication operation flag and the recovery operation flag are turned off in step s9, and the process proceeds to the next process.

Note that the present invention is not limited to the above embodiments, and can take various configurations.

For example, although the carriage is further moved from the position of the small recovery by suction to guide ink to the face surface to perform the large recovery, the large recovery may be performed at that position. In addition, if a sufficient effect can be obtained with only a small recovery, the configuration for large recovery can be omitted, and small recovery can be achieved not only by suction, but also by pressurizing the ink supply system of the recording head. It may also be done by forcibly ejecting.

Furthermore, although a stepping motor was used as the carriage motor on the upper side, for example, a DC motor could be used to supply the necessary and sufficient weak current to be locked at the home position when setting the home position, and to operate the atmosphere communication operation. The present invention can be similarly applied even if the power supply is cut off later.

[Effects of the Invention] As explained above, according to the present invention, there is provided a mechanism for capping a face surface in connection with the movement of a recording head or a carriage carrying the recording head to a predetermined position, and A recovery means for forcibly discharging ink from the recording head and a capping state for a predetermined period of time! In the inkjet recording apparatus, the inkjet recording apparatus is provided with means for opening and closing the interior of the space formed by capping to the atmosphere when the capping is continued, and means for cutting off power to the motor for moving the recording head after the opening and closing. When the recovery means is activated after opening and closing, capping is always applied prior to this, so that a reliable recovery operation can be performed and, in turn, the stability of the recording element can be maintained. become.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the main parts of an inkjet recording apparatus according to an embodiment of the present invention, and FIGS. 2, 3, and 4 show a cap portion disposed on the recovery means in FIG. A side sectional view, a front view, and a calibration diagram; Fig. 5 is a side view of the rubbing part; Fig. 6 is a block diagram showing an example of the configuration of the control system for Fig. 1; Fig. 7 is a record related to this example. A flowchart showing an example of a processing procedure during standby. 1... Inkjet head (recording element), 1a...
・Part of head, 2... Carriage, 2a... Part of carriage, 3... Carriage shaft, 4... Recording medium, 5... Auxiliary shaft, 6... Cap, 6a... ...Air valve, 6b...Atmospheric communication hole, 6c...Large recovery hole, 6d...Waste ink discharge port, 7...Cap holder, 8...-Holder, 8b...Dowel portion, 9 ...Spring, lO...E ring, 11...Flat cam, 11a...Dowel, 11b...Cam surface, 12...Spring, 13...Slider, 13a...Arm part , 14...Cap l+b, 15...Stopper, 16...E ring, 17...Spring, 18...Large recovery cap tube, 19...Waste ink cap tube, 20...Pump , 21... Piston, 22... Waste ink tube, 23... Ink cartridge, 23a... Waste ink intake port, 23b... Ink outlet port, 24... Blade, 25... Scraping Members, 26... Rubbing holder, 27... Rubbing slider, 27a... Part of rubbing slider, 28... Spring, 29... E-ring, 30... Body side plate, 30a... Part of main body side plate, 31...Blade presser, 32...Slider return spring, 33...Polymer absorber, 34...Paper feed roller shaft, 35...Drive gear, 36... Clutch spring, 37... Idle gear, 38... Cam gear, 39... Cam'hb. 40... Rubbing cam, 4142... Pump cam, 43... Home position cam, 44... Parallel pin, 45... Home position switch, 46... Lever 46a... Protrusion, 47...・Recovery system base, 47a...Part of recovery system base, 48...Large recovery valve, 49...Large recovery tube, 50...Spring, 51...Ink supply tube, 52... Cap, 53... Blade, 54... Head, 55... Carriage, 5... Ink reservoir, 57... Cap, 58... Cap holder, 1002... Control unit, 1008... - Carriage motor, 1010...paper feed motor, 1014...information human resources department. Figure 2 Figure 4 Figure 5

Claims (1)

[Scope of Claims] 1) In a liquid jet recording apparatus that performs recording while scanning a recording medium in a predetermined direction with a recording head having a recording liquid discharge port, the discharge port of the recording head provided with the discharge port a cap member capable of covering the formation surface; a transmission member having a mechanism for causing the cap member to cover the ejection port formation surface in connection with the operation of setting the recording head to a predetermined position; a recovery unit that performs an ejection recovery process by forcibly discharging the recording liquid from the ejection port; and a drive unit that is a drive source for scanning so that the recording head is locked at the predetermined position. a first control means for controlling; an opening/closing means for opening/closing a space closed by the capping to the atmosphere when the capping state in which the cap member covers the discharge port forming surface continues for a predetermined period of time; a second control means for later stopping the driving of the drive means; and a third control means for resetting the recording head at the predetermined position prior to starting the recovery means after the opening and closing. A liquid jet recording device characterized by comprising: 2) The liquid jet recording apparatus according to claim 1, wherein the recording head uses thermal energy to form droplets of the recording liquid to create an image.