JPS62113553A - Ink jet recorder - Google Patents

Abstract

PURPOSE:To prevent occurrence of defective recording liquid discharge by removing liquid and/or foreign matter of a recording liquid discharge part adhering to the first removing member using the second removing member. CONSTITUTION:If a carriage is driven toward an arrow 'b' direction, a fold- forming part at the tip of a blade 2 slides to contact the front of a recording head 3, removing ink, paper waste or dust attaching to an orifice part. Next, if the carriage 4 is further driven toward 'b' direction, a porous body 7 slides to contact the blade 2, clearing ink, paper waste or dust sticking to the blade 2. When a large quantity of these removed materials have accumulated in the porous body 7, the porous body 7 is to be replaced or cleaned. Thus the settlement of ink, paper waste or dust on the orifice part from the blade 2 is eliminated, preventing generation of defective ink discharge.

Description

[Detailed Description of the Invention] [Field of Application in Industry 1] The present invention relates to an inkjet recording device, and more specifically, the present invention relates to an inkjet recording device, and more specifically, the present invention relates to an inkjet recording device, and more specifically, a liquid and/or The present invention relates to an inkjet recording apparatus having a first par-removal material 88 for removing foreign matter.

[Prior Art] In an inkjet recording apparatus that performs recording using an inkjet recording head that ejects ink liquid as a recording liquid,
If paper scraps, dust, etc. adhere to the ink ejection part of the recording head, that is, the orifice part, through the ink, the direction in which the ink liquid is ejected changes, causing ejection failure or making ejection impossible. Recording may become impossible.

Therefore, conventional inkjet recording devices are equipped with a device consisting of a suction pump to restore the normal ink ejection state, and the ink is sucked from the orifice using the negative pressure of the pump, and the flow of the sucked ink is A structure is adopted that removes paper scraps, dirt, etc. from the orifice.

In addition, in order to remove large paper scraps, dust, etc. that cannot be removed by the above-mentioned ink flow, a blade is installed adjacent to the recovery device to shake off these items, and the orifice portion is attached to the blade through the movement of the roller ridge. A rubbing configuration is adopted.

[Problems to be Solved by the Invention] In the configuration in which the blade described in 1 is provided, the paper scraps, dust, etc. attached to the blade remain as they are and there is no place to collect them, so these paper scraps, dust, etc. cannot be recovered. There was a problem in that during operation, the blade adhered to the orifice part, repeating the vicious cycle.

In addition, there is a problem in that ink that has not flowed away during ink suction accumulates in the orifice portion, and as the blade brushes off the ink, the ink scatters and contaminates the surrounding area. Further, if the shape of the blade is configured so that ink adheres well to the blade to prevent ink from scattering, there is a problem in that ink accumulates on the blade and the same vicious cycle as described above repeats.

[Means for Solving the Problems] In order to solve the problems mentioned above, in the present invention, in an inkjet recording apparatus of the type described in the industrial application field, the present invention provides an inkjet recording apparatus in which the recording liquid adheres to the recording liquid ejection portion of the recording head. A configuration is adopted in which the apparatus further includes a second removal member for removing liquid and/or foreign matter adhering to the first removal member for removing liquid and/or foreign matter attached to the first removal member.

[Function] As shown in FIG. 1, the above-mentioned blade 2 is provided adjacent to the cap holder 14 supporting the cap 15, which is a device composed of the pump 12, so as to be movable back and forth as shown by the arrow. . As shown in FIG. 2, the tip of the blade 2 that comes into sliding contact with the recording head has many folds 2a
is formed.

Further, as shown in FIG. 3, on the carriage 4 there is ink attached to the blade 2. Paper waste. A porous body 7 for removing dust and the like is provided adjacent to the recording head 3 and is replaceable via a holder 6.

During the ejection recovery operation, as shown in FIG. 4, after the ink suction by the recovery button 1 is completed, the blade 2 is displaced forward as shown by arrow a, and the carriage 4 is driven in the direction of arrow b.

As a result, the pleats 2 at the tip of the blade 2 as shown in FIG.
(a) The shadow forming component slides into contact with the front surface of the recording head 3, and ink and paper waste adhere to the orifice area.

Remove garbage, etc. In this case, the removed ink is retained in the pleats 2a by capillary action and does not fly around.

Next, as the carriage 4 is further driven in the b direction, the porous body 7 comes into sliding contact with the blade 2, as shown in FIG. 6, and the ink and paper waste adhering to the blade 2 are removed. Remove garbage, etc.

Next, as shown in FIG. 7, the blade 2 is moved back to its original position as indicated by arrow C, and the carriage 4 is driven in the direction of arrow d to the home position, thereby completing the ejection recovery operation.

Ink and paper scum form on the porous body 7 due to repeated ejection recovery operations. If a large amount of dust or the like accumulates in the porous body 7, remove the porous body 7 and replace it with a new one, or reinstall it after cleaning.

In this way, ink and paper waste adhere to the blade 2 every time the ejection recovery operation is performed. Dust etc. are removed from the blade 2 by the porous body 7.
Ink and paper waste are removed from the blade 2 to the orifice. This prevents dust from adhering to the surface.
Ink ejection failure caused by this adhesion is prevented from occurring.

Embodiments] Details of embodiments of the present invention will now be described with reference to the attached drawings.

FIG. 1 shows the configuration of a recovery device for normally recovering the above-mentioned ink ejection state of the inkjet recording apparatus according to this embodiment.

The recovery device 1 is provided so as to face the carriage in a predetermined region of the movement range of the carriage, which will be described later, for example, at a home position. The pump 12 includes a pump 12 which is operated by a lever 1l to perform the above-mentioned ink suction, and a cap 15 supported by a cap holder 14 on the front side of a frame l3 and communicating with a pump chamber within the pump l2.

The cap holder 14 is provided so as to be movable back and forth as shown by the arrow, and is configured to be displaced back and forth by driving a motor 17 via a gear 16 during a recovery operation.

In addition, on one side of the frame 13, as mentioned above, there are ink and paper residue attached to the orifice part.

A blade 2 for removing dust and the like is fixed to the tip of the support plate 18 and supported adjacent to the cap holder 14. The blade 2 is made of an elastic material and is formed into a rectangular plate shape as shown in FIG. 2, and a number of folds 2a are formed at the tip portion that slides into contact with the front surface of the recording head during one recovery operation. Further, the support plate 18 is provided to be movable back and forth as shown by the arrow in FIG. 1, and is configured to be displaced back and forth via a lever 20 and a drive mechanism (not shown) during a recovery operation. .

Next, FIG. 3 shows the structure around the carriage of the apparatus of this embodiment.

The carriage is shown by numeral 4 in Figure 3.

It is slidably provided on two wooden sliding shafts 5, 5, and is slid along the recording surface of recording paper (not shown) set on a platen (not shown) by being driven by a drive mechanism (not shown). axis 5.5
run on top.

A recording head 3 is mounted at the center of the front side of the carriage 4 facing the recording paper. The recording head 3 is driven by a drive signal corresponding to recording data applied via a flat cable 19, and discharges ink droplets from the tips of a predetermined number of slot chairs 3a arranged in a vertical row in front. Dot recording.

Also, on the front side of the carriage 4, a holder 6 is attached to the mounting hole 4a.
Fixed via. The holder 6 is hollow and has a notch S6a formed on the front side.

A porous body 7 indicated by reference numeral 7 is fitted into this holder 6 in a detachable or replaceable manner.

The porous body 7 slides into contact with the blade 2 during the ink ejection recovery operation to remove ink, paper scraps, dust, etc. adhering to the blade 2, and is formed from a porous material in the shape of a rectangular block with a convex cross section. has been done. The side surface exposed to the front side of the carriage 4 through the notch 6a when the carriage 4 is fitted into the holder 6 is entirely brushed like a brush.

Further, a sub-tank indicated by reference numeral 8 is provided on the carriage 4, and ink is supplied from this sub-tank 8 to the rad 3 for recording.

Next, the ink ejection recovery operation by the apparatus of this embodiment having the following configuration will be explained with reference to FIGS. 4 to 7.

When an ink ejection failure occurs, the carriage 4 first returns to the home position shown in FIG.
is moved to a position facing the cap 15 of the recovery device 1.

Next, the cap holder 14 is displaced forward as shown by the arrow, and the cap 15 is brought into close pressure contact with the front surface of the recording head 3, after which the pump 12 mentioned above is driven and the recording head 3 is moved forward.
The ink is sucked from the orifice 3a.

When the suction is finished, the cap holder 14 and the cap 15 are moved backward as shown by the arrow, and the plate 2 is displaced forward as shown by the arrow a.

Next, as the carriage 4 is driven in the direction indicated by the arrow, as shown in FIG. .

Remove garbage, etc.

In this case, the removed ink is retained in the pleats 2a by capillary action and does not scatter to the surroundings.

Then, as the carriage 4 is further driven in the direction indicated by the arrow, the porous body 7 comes into sliding contact with the blade 2 as shown in FIG. Then, the raised bristles of the porous body 7 come into sliding contact with the surface of the pleats 2a of the blade 2, and paper waste adheres to the surface of the pleats 2a by passing between the pleats 2a.
Dust etc. and ink accumulated between the folds 2a are removed.

The removed paper scraps, dust, etc. are held between the hairs of the porous body 7, and the ink is absorbed into the body of the porous body 7.

Next, as shown in FIG. 7, the blade 2 is moved back to its original position as indicated by arrow C, and the carriage 4
is driven in the direction of arrow d and returned to the home position shown in FIG. 4, thereby completing the ejection recovery operation.

If a large amount of ink, paper waste, dust, etc. accumulates in the porous body 7 due to repeated ejection recovery operations, remove the porous body 7 and replace it with a new one, or clean it and then remove it. Reinstall.

As described above, according to this embodiment, ink, paper scraps, dust, etc. adhering to the blade 2 are removed from the blade 2 by the porous body 7 every time the ejection recovery operation is performed, so that the ink and the like from the blade 2 to the orifice area are removed. The adhesion of paper scraps, dust, etc. is prevented, and the occurrence of ink ejection failure due to this adhesion is prevented.

In this example, the porous body 7 was used in which the sliding contact part with the blade 2 was a raised part, but the structure of the sliding contact part of the porous body may be other than the structure shown in FIG. 8, for example. Possible structures include a structure in which a large number of extremely thin rods 10 that are thicker than hair are implanted, and a structure in which many irregularities are formed on the surface 9 by embossing, as shown in FIG.

Further, deposits on the blade 2 may be removed using a removal member made of a suitable material other than a porous material.

Further, an ink storage means made of a porous body or the like that further absorbs and stores the ink absorbed by the porous body 7 may be provided connected to the porous body 7.

[Effects of the Invention] As is clear from the following explanation, according to the inkjet recording apparatus of the present invention, P is applied to the recording liquid ejection portion of the recording head.
Since the liquid and/or foreign matter adhering to the first removing member which is in contact with and adhering to the recording liquid ejecting portion is removed by the second removing member, the first removing member It is possible to prevent the occurrence of recording liquid ejection failure caused by liquid and/or foreign matter adhering to the recording liquid ejecting part, maintain a normal recording state, and improve the reliability of the device; (j
;Can be improved.

[Brief explanation of drawings]

The figures explain the present invention in detail, and Fig. 1 is a perspective view showing the structure of the recovery device, Fig. 2 is a perspective view showing the structure of the blade in Fig. 1, and Fig. 3 is a gear 9 fan 951. FIGS. 4 to 7 are respectively explanatory views of the discharge recovery operation, and FIGS. 8 and 9 are perspective views showing other structural examples of the porous body. 1... Recovery device 2... Blade 2a...
Crease 3... Recording head 3a... Orifice 4... Carriage 5... Sliding shaft 6
...Holder 7... Porous body '7) L'f I-) Ii 2's Gi J1 is close I9 Lily 4 companies Straw Seven Ne 0.6 Figure 8 Deku 'rI-' iL To's Igume-oh - 1 Store Location So/I Robbery Seven Shi J6 Ko Answer 9 Diagram

Claims (1)

[Scope of Claims] 1) An inkjet recording apparatus having a first removal member for slidingly contacting the recording liquid ejection portion of the inkjet recording head and removing liquid and/or foreign matter adhering to the upper recording liquid ejection portion, An inkjet recording apparatus further comprising a second removal member for removing liquid and/or foreign matter adhering to the first removal member. 2) The inkjet recording apparatus according to claim 1, further comprising means for absorbing and storing the liquid adhering to the second removal member.