JP2000296603A - Recording method and recording device - Google Patents

Abstract

(57) Abstract: A recording method and a recording method for recording a desired pattern or character on a recording material capable of removing unnecessary dye ink remaining near an ejection hole in a short time with a small amount of dye ink. Provided are an ink jet dyeing method and an ink jet dyeing apparatus for dyeing a desired pattern on a device and a fabric. A recording method for ejecting recording ink onto a recording material while relatively moving the recording material and / or the recording means to perform recording, wherein a recording ink supply amount and / or a recording ink supply pressure to the recording means. And adjusting a cross-sectional area of a recording ink supply pipe to the recording means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording method and a recording apparatus for recording a desired pattern or character on a recording material, and more particularly to an ink jet dyeing method and apparatus for dyeing a desired pattern on a cloth.

[0002]

2. Description of the Related Art A method of dyeing a desired pattern by discharging a dye ink on demand from an ink jet head while reciprocating an ink jet head in a direction substantially perpendicular to the conveying direction while conveying a fabric by a conveyor. Are known. In the method of discharging the dye ink on demand from the inkjet head, the discharge / stop of the dye ink is repeated. However, in this method, when the discharge of the dye ink is stopped, the unnecessary dye ink remains near the discharge hole, When the dye ink is to be ejected, there is a problem in that ejection clogging is caused and ejection failure is caused such as a change in ejection direction.

[0003]

As a conventional technique for preventing a defective discharge which is likely to occur when the dye ink is discharged on demand from the ink jet head as described above, there is a method of cleaning the head. This cleaning method includes a method of wiping the head surface with a wiper,
Unnecessary dye ink remaining in the vicinity of the discharge hole is removed by a method of forcibly discharging the dye ink from the discharge hole.

In particular, a method of forcibly discharging the dye ink from the discharge holes and removing unnecessary dye ink remaining near the discharge holes is performed by forcibly discharging the dye ink using a pump or the like.

According to this method, even if the discharge amount of the pump is increased, the ink is not easily pressurized, and a large amount of dye ink is required to forcibly discharge the ink in a sufficiently pressurized state. In addition, there is a problem that it takes time to reach a sufficiently pressurized state.

SUMMARY OF THE INVENTION The present invention overcomes the above-mentioned conventional problems, and provides a desired material, such as a desired pattern or character, on a recording material capable of removing unnecessary dye ink remaining in the vicinity of an ejection hole in a short time with a small amount of dye ink. It is an object of the present invention to provide a recording method and a recording apparatus for recording an image, and an inkjet dyeing method and an inkjet dyeing apparatus for dyeing a desired pattern on a fabric.

[0007]

To achieve the above object, the present invention comprises the following constitution. (1) In a recording method of ejecting recording ink onto a recording material while relatively moving the recording material and / or the recording unit, the recording ink supply amount and / or the recording ink supply to the recording unit is provided. A recording method comprising adjusting a pressure and a sectional area of a recording ink supply pipe to a recording unit.

(2) While transporting the fabric on the conveyor,
In an ink jet dyeing method for reciprocating an ink jet head in a direction intersecting the conveyance and discharging and dyeing a dye ink during the reciprocal movement, a dye ink supply amount and / or a dye ink supply pressure to the ink jet head; An ink jet dyeing method comprising adjusting a cross-sectional area of a dye ink supply pipe to a head.

(3) An ink jet dyeing method according to the above (2), wherein the adjustment according to the above (2) is performed during a period when the movement of the ink jet head is stopped.

(4) The ink jet dyeing method according to the above (2), wherein the adjustment described in (2) is performed at a time when the ink jet head switches between forward movement and backward movement.

(5) The adjustment described in (2) is previously instructed to be adjusted, and automatically performed when the timing described in (3) or (4) is reached. An ink-jet dyeing method, characterized in that it is performed.

(6) In the ink jet dyeing method according to any one of the above (2) to (5), the supply amount of the dye ink and / or the supply pressure of the dye ink are adjusted by adjusting the discharge amount of the pump. An ink-jet dyeing method, which is characterized in that:

(7) In the ink jet dyeing method according to any one of the above (2) to (6), the adjustment of the sectional area of the dye ink supply pipe is performed by adjusting the opening of the valve. An ink-jet dyeing method, characterized in that:

(8) In a recording apparatus for recording by discharging recording ink onto a recording material while relatively moving the recording material and / or the recording means, the recording ink supply amount to the recording means and / or the recording ink A recording apparatus comprising means for adjusting a supply pressure and a cross-sectional area of a recording ink supply pipe to a recording means.

(9) While transporting the fabric on the conveyor,
In an ink jet dyeing apparatus for reciprocating the ink jet head in a direction intersecting the conveyance and discharging and dyeing the dye ink during the reciprocal movement, a dye ink supply amount and / or a dye ink supply pressure to the ink jet head; An ink jet dyeing apparatus comprising means for adjusting the cross-sectional area of a dye ink supply pipe to an ink jet head.

(10) The adjusting means according to (9),
An ink-jet dyeing apparatus, wherein the ink-jet dyeing apparatus is configured to be performed when the movement of the ink-jet head is stopped.

(11) An ink jet dyeing apparatus according to the above (9), wherein the adjustment is performed at a time when the ink jet head switches between forward movement and backward movement.

(12) The ink jet dyeing apparatus according to the above (9) is provided with an adjustment command section, and the command section is instructed in advance to perform the adjustment. An ink jet dyeing apparatus, which is configured to be automatically performed when the described time comes.

(13) In the ink jet dyeing apparatus according to any one of the above (9) to (12), the means for adjusting the supply amount of the dye ink and / or the supply pressure of the dye ink adjusts the discharge amount of the pump. An inkjet dyeing apparatus characterized by being performed.

(14) In the ink jet dyeing apparatus according to any one of (9) to (13), the adjustment of the cross-sectional area of the dye ink supply pipe is performed by adjusting the opening of the valve. An ink jet dyeing apparatus, characterized in that:

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings. FIG. 1 is a schematic view showing an embodiment of an ink jet dyeing apparatus which is an example of a recording apparatus according to the present invention.

A dye ink 10 is discharged and dyed on the cloth 3 as a recording material from an ink jet head 4 as recording means. The ink jet head 4 is configured to be able to reciprocate between 4a and 4b by moving means (not shown) in the directions of arrows 7a and 7b. Fabric 3 has arrow 7
The sheet is horizontally conveyed by a belt conveyor or the like (not shown) in a direction substantially orthogonal to the directions a and b.

The positions of 4a and 4b are configured such that ink is not dropped on the cloth 3 even if ink is ejected at these positions. A receiving tray 1 for receiving unnecessary ink is provided below 4a and 4b.
1a and 11b are provided.

The pinch valve 2 has an ink jet head 4
This is for changing the cross-sectional area of the resilient ink pipe 8 which communicates with the ink tank 5 which is open to the atmosphere. The pinch valve 2 does not directly contact the ink. In this embodiment, the ink pipe 8 is configured to be used in two states: a fully open state and a fully closed state.

The pump 1 uses a roller pump.
The pump 1 also does not directly contact the ink. The pump 1 includes a stator 1a and a rotor 1b. The ink is sent from the ink tank 5 to the ink jet head 4 so that the ink pipe 8 is nipped and squeezed out by the rotor 1b with the ink pipe 8 being along the stator 1a.

When the pump 1 does not operate, the stator 1
a and the rotor 1b stand by at a position where the ink pipe 8 is not nipped. Therefore, when the pump 1 is stopped and the pinch valve 2 is fully opened, ink is in communication between the ink tank 5 and the inkjet head 4.

Opening and closing of pinch valve 2 and operation of pump 1
Each operation such as the stoppage and the amount of liquid supply is controlled by the controller 6.

The method of supplying the ink to the ink jet head 4 is normally performed when ink is applied so as to print a desired pattern on the fabric 3, and when ink is purged to remove unnecessary ink near the ejection holes of the ink jet head 4. different.
Normally, the ink jet head 4 is on the cloth 3,
At the time of ink purging, the ink jet head 4 is at the position 4a or 4b. When in position 4a or 4b,
This corresponds to a time when the operation of the inkjet head 4 is stopped or paused or the forward movement and the backward movement are switched.

Normally, the pump 1 stops operating, and the pinch valve 2 is fully open. In this state, the ink is normally pushed out from the ink jet head 4 to the fabric 3. Then, the ink pipe 8 communicating the ink jet head 4 and the ink tank 5 which is open to the atmosphere has a negative pressure. Then, the ink in the ink tank 5 that has been released to the atmosphere flows into the ink pipe 8, and the negative pressure in the ink pipe 8 returns to the atmospheric pressure.

The ejection of ink at the time of ink purging is performed by the controller 6 as follows. (Pressure mode): First, the pinch valve 2 is fully closed. Next, the pump 1 operates to send the ink in the ink tank 5 to the inkjet head 4 at a liquid sending speed instructed by the controller 64. Since the pinch valve 2 is in the fully closed state, no ink is sent to the ink jet head 4, the elastic pipe 8 between the pump 1 and the pinch valve 2 expands, and the ink pressure in the pipe 8 increases. (Discharge Mode): Next, when a predetermined time elapses after the operation of the pump 1 starts, the pump 1 temporarily stops while nipping the pipe 8. Next, the pinch valve 2 is fully opened. Then, the ink in the pipe 8 expands in the pipe 8 and the pressure is applied, and the ink is discharged from the inkjet head 4 at a stretch. Unnecessary ink remaining in the vicinity of the ink ejection holes of the ink jet head 4 is removed by the action of the ink which flows at once.

In this embodiment, as described above, the timing when the pump 1 is temporarily stopped with the pipe 8 nipped after the operation is started is the time when a predetermined time has elapsed. It is not necessary that the predetermined time elapse, but the pressure in the pipe 8 between the pump 1 and the pinch valve 2 is monitored, and the time when the set pressure is reached may be used. Alternatively, the ink discharge flow rate at the outlet of the pump 1 may be monitored, and the time may be the time when the set flow rate is reached.

Next, the intervals at which the ink purge is performed will be described. The interval at which the ink purge is performed is performed according to a command from the command unit 9. There are two instruction methods. (Command 1): Immediately after the command 1 is transmitted to the controller 6, the controller 6 instructs an unshown ink jet head control unit to move the ink jet head 4 to the position 4a or 4b. After the inkjet head 4 reaches the position 4a or 4b, the ink purge is performed. (Instruction 2): The condition for performing the instruction 1 is determined by the controller 6
Tell When the condition is satisfied by the controller 6, the command 1 is executed immediately. The conditions for performing the command 1 are set in the command unit 9 in advance.

The condition for executing the command 1 may be, for example, when the number of reciprocations of the ink jet head 4 reaches a set number of times, or when the number of ink ejection drops reaches the set number of drops. The condition for performing the command 1 may be a condition in which dirt near the ejection holes of the ink jet head 4 is monitored by a monitoring unit (not shown), and the dirt is detected.
Ordinary ejection may be performed when the inkjet head 4 is at the position 4a or 4b, and the ejection condition may be monitored by monitoring means (not shown) to detect when the ejection condition is different from the normal condition.

In this embodiment, the number of ink jet heads is one. However, the number of ink jet heads may be the same as the number of inks of necessary colors. In that case, the ink tank, the pump, and the pinch valve are also configured by the number of inks.

Although the pump used in this embodiment is a roller pump that does not contact ink, the present invention is not limited to a roller pump that does not contact ink. In short, it is sufficient that the ink can be sent, and a gear pump or a syringe pump may be used. However, it is preferable that the configuration is such that ink retention is as small as possible.

Although a pinch valve that does not contact ink is used as the valve used in this embodiment, the valve need not be limited to a pinch valve that does not contact ink. In short, it is only necessary to restrict or cut off the ink supply, and a needle valve, a ball valve, or the like may be used. However, it is preferable that the configuration is such that ink retention is as small as possible.

Further, the present invention may be combined with a known method of wiping the head surface with a wiper.

[0038]

According to the present invention, the following effects can be obtained.

1) Since the discharge side of the pump is closed by the pinch valve, the ink pipe can reach a sufficiently pressurized state in a short time.

2) Since the ink in a sufficiently pressurized state can be ejected from the ink jet head at a stretch by releasing the pinch valve, unnecessary dye ink remaining near the ejection holes of the ink jet head can be reliably removed. .

3) Since the timing of performing the ink purging can be arbitrarily set, it is possible to efficiently remove unnecessary dye ink remaining in the vicinity of the ejection holes of the ink jet head without manual operation.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an embodiment of an ink jet dyeing apparatus which is an example of a recording apparatus according to the present invention.

[Explanation of symbols]

 1: Pump 1a: Pump 1 stator 1b: Pump 2 rotor 2: Pinch valve 3: Fabric 4: Ink jet head 4a, 4b: Reciprocating end position of ink jet head 4 5: Ink tank 6: Controller 7a, 7b: Moving direction of ink jet head 8: Ink piping 9: Command section 10: Ink 11a, 11b: Unnecessary ink pan

Claims (14)

[Claims] 1. A recording method for ejecting recording ink onto a recording material while relatively moving the recording material and / or recording means to perform recording, wherein a recording ink supply amount and / or recording ink supply to the recording means is provided. A recording method comprising adjusting a pressure and a sectional area of a recording ink supply pipe to a recording unit. 2. An ink jet dyeing method in which an ink jet head is reciprocated in a direction intersecting with the conveyance while a cloth is conveyed, and a dye ink is ejected and dyed during the reciprocating movement. An ink jet dyeing method comprising adjusting an ink supply amount and / or a dye ink supply pressure and a cross-sectional area of a dye ink supply pipe to an ink jet head. 3. The ink jet dyeing method according to claim 2, wherein the adjustment according to claim 2 is performed when the movement of the ink jet head is stopped. 4. The ink jet dyeing method according to claim 2, wherein the adjustment according to claim 2 is performed at a time when the ink jet head switches between forward movement and backward movement. 5. The adjustment according to claim 2 is commanded in advance to perform the adjustment, and is automatically performed when the timing described in claim 3 or 4 is reached. An ink-jet dyeing method, characterized in that: 6. The ink jet dyeing method according to claim 2, wherein the supply amount of the dye ink and / or the supply pressure of the dye ink are adjusted by adjusting the discharge amount of a pump. An ink-jet dyeing method, characterized in that: 7. The ink jet dyeing method according to claim 2, wherein the cross-sectional area of the dye ink supply pipe is adjusted by adjusting the opening of the valve. Inkjet dyeing method. 8. A recording apparatus for ejecting recording ink onto a recording material while performing relative movement of the recording material and / or recording means to perform recording, wherein a recording ink supply amount and / or recording ink supply to the recording means is provided. A recording apparatus comprising means for adjusting pressure and a cross-sectional area of a recording ink supply pipe to recording means. 9. An ink jet dyeing apparatus which reciprocates an ink jet head in a direction intersecting with the conveyance while conveying a fabric by a conveyor, and discharges and dyes a dye ink during the reciprocating motion. An ink jet dyeing apparatus comprising means for adjusting a dye ink supply amount and / or a dye ink supply pressure and a cross-sectional area of a dye ink supply pipe to an ink jet head. 10. An ink jet dyeing apparatus, wherein the adjusting means according to claim 9 is configured to be performed when the movement of the ink jet head is stopped. 11. An ink-jet dyeing apparatus according to claim 9, wherein the adjusting means is configured to be performed at a time when the ink jet head switches between forward movement and backward movement. 12. An ink-jet dyeing apparatus according to claim 9, further comprising an adjustment command section, wherein said command section is instructed in advance to perform adjustment.
An ink jet dyeing apparatus is configured to be automatically performed when the time described in (1) is reached. 13. An ink jet dyeing apparatus according to claim 9, wherein the means for adjusting the supply amount of the dye ink and / or the supply pressure of the dye ink is performed by adjusting the discharge amount of a pump. An ink jet dyeing apparatus, characterized in that: 14. The ink jet dyeing apparatus according to claim 9, wherein the cross-sectional area of the dye ink supply pipe is adjusted by adjusting the opening of the valve. Inkjet dyeing equipment.