JPH02212175A - Recording apparatus - Google Patents

Abstract

PURPOSE:To prevent unreasonable distortion or sudden deformation by almost bending the suction pipe drawn out to the outside of a side plate in the moving direction of a platen along the side plate by the first elbow joint and further almost bending the suction pipe in the direction of a suction means along the side plate by the second elbow joint. CONSTITUTION:A platen 1 is partitioned corresponding to the width of a paper size and the left end of said platen 1 looked from the holding surface 1A thereof is set to a reference position to set a recording sheet 2. The second suction pipes 26A-26D connected to the first elbow joint 17 are arranged almost in the moving direction of the platen 1 along the outside of a side plate 8 to he held by a clamp 19 and respectively connected to the third suction pipes 36A-36D through the second elbow joint 20. The bundle of the third suction pipes 36A-36D thus bundled by the clamp 19 is guided in the direction of a distributor. For example, when the size of the sheet 2 is A4, suction is performed only from a section 21D and suction is performed from sections 21D, 21C in the case of a B4 size and from sections 21D, 21C, 21B in the case of an A3 size and from sections 21A, 21B, 21C, 21D in the case of an A2 size.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a recording device, and more specifically, a housing-shaped housing for sucking and holding a recording sheet, which is a recording material, at a position opposite to a recording head. The present invention relates to a recording device that has a platen and includes a suction tube on the back side of the platen for sucking air from a housing.

(Prior Art) Conventionally, in inkjet recording devices, etc., it is necessary to maintain an extremely narrow and accurate distance between the recording sheet and the ink ejection surface of the recording head. A large number of suction holes are provided, the platen itself is formed into a housing shape, and air is sucked from the rear side of the platen through the suction holes using a flexible suction tube. Figures 5, 6A, and 6 [Figure 1] show an example of the configuration of such a conventional recording device. In these figures, 1 has a box shape, and the inside is partitioned by a plurality of walls (not shown). platen 2 is the holding surface l of platen 1
The recording sheet 3 held at
This is a print head that performs printing by ejecting ink from the head.

Further, the platen 1 is rotatably supported around a rotation @4, and an air outlet 5^ is provided for each divided chamber so that suction can be performed according to the size of the recording sheet 2 to be supplied. ~5D. 6^~6D is air outlet 5^~
Flexible suction pipes are used to suck air from 5D, and 7 is a pull-out hole for collecting these suction pipes 6^ to 6D into a bundle and taking them out from the side plate 8 and guiding them to a distributor and suction blower (not shown). It is. Furthermore, the holding surface l^ of the platen 1 that holds the recording sheet 2 is provided with a large number of suction pores (not shown).

Reference numeral 9 denotes a feeding roller that sends out the recording sheet 2, and lO denotes a sheet feeding roller that feeds the recording sheet 2 in a direction perpendicular to the eight movements of the head 3 every time the recording head 3 scans the eight movements. Reference numeral 11 denotes a stopper attached to the side wall 8. During the process of feeding or ejecting the recording sheet 2, the platen l is rotated around @4 in order to deal with a jam when it occurs or to facilitate maintenance. It is kept rotatable in direction C, and is caught by this stopper 11 when it is folded down from the illustrated state. Note that the recording operation in the recording apparatus configured in this manner is well known, and its explanation will be omitted.

[Problem to be solved by the invention] °.

However, in such conventional recording devices,
When the platen 1 is rotated around the rotation axis 4 and tilted down when a jam occurs, the flexible suction tubes 6^ to 6B will also be twisted around the drawer lower, and therefore, as shown in FIG. 5A. As shown, the suction tubes 6^ to 6D themselves need to be twisted in an S-shape around the drawer lower to give them some space. Now, set the outer diameter of suction tubes 6^~6D to 1
If it is about 0a+m, then the radius of curvature R of the bend will need to be about 100mm, and if the radius of curvature is smaller than this, the pipe will break. Therefore, the space provided inside and outside the side wall 8 becomes a dead space, and it is difficult to make it more compact. This resulted in an increase in the size of the entire device.

In addition, the rotational movement of the platen 1 is not smooth due to the stiffness of the suction tubes 6~6D themselves, and furthermore, the bundle is displaced due to deformation of the suction tubes 6~6D, which is not shown in the drawings. There was a risk that it would come into contact with other parts of the machine and cause problems.

The purpose of the present invention is to eliminate the conventional drawbacks as mentioned above,
To provide a recording device capable of smoothly displacing suction tubes in a bundled state during srBJti operation of a platen, eliminating the need to provide wasteful space for routing the suction tubes, and contributing to compactness.

[Means to solve the problem]

In order to achieve such an object, the present invention has a platen of a housing capable of suctioning and holding a recording material at a position opposite to the recording head, supports the platen on a side plate, and has the platen moved in the direction in which the platen is pulled away from the recording head. In this recording device, a flexible suction tube that sucks air from the platen to suck the recording material is pulled out to the outside of the side plate and guided to the suction means. A hole for pulling out the suction tube was formed according to the drawing hole, and the suction tube was pulled out to the outside of the side plate through the hole for pulling out, and the suction tube was bent along the side plate almost in the direction of movement of the platen using the first elbow joint. It is characterized in that the suction tube is further bent by a second elbow joint along the side plate substantially in the direction of the suction means.

(Function) According to the present invention, the suction pipe drawn out from the suction pipe drawing hole provided in the side plate to the outside of the side plate is bent by the first elbow joint along the side plate substantially in the direction of movement of the platen, and further Since the suction tube is bent almost in the direction of the suction means along the side plate using the second elbow joint, the suction tube maintains its bent shape almost along the side plate even when the platen is moved. However, since it can be displaced within one plane, there will be no unreasonable twisting or sudden deformation.

(Example) Examples of the present invention will be described below in detail and specifically based on the drawings.

1 to 4 show one embodiment of the present invention. In these figures, 15 is a hole for drawing out the suction tube formed in the side plate 8. In this example, the shape of the drawing hole 15 is As shown in the drawings and FIG. 4, the rotating shaft 4 is formed into a fan shape with the rotation axis 4 at the center. Then, the suction tubes 16A to 16D, which have been guided almost parallel to each other along the rear surface ill of the platen 1, are pulled out along one edge of the bowed hole 15 in a vertically aligned state, and each tube is 168-160 are connected to second suction pipes 268-26D by first elbow joints 1F.

As mentioned above, the platen 1 is partitioned according to the width of the paper size, and as shown in FIG. This is how you set it. Therefore, when air is sucked through a distributor (not shown), air is not wasted through the suction holes 18 from sections outside the sheet width.

The second suction pipe 26^ connected to the first elbow joint 17
~26D are arranged along the outside of the side plate 8 and substantially along the moving direction of the platen 1, and are held by the clamps 19, and are connected to the third suction pipes 36~ through the second elbow joints 20, respectively. Connected to 36D.

In this way, the bundle of the third suction tubes 36A to 36D gathered into a bundle by the clamp 19 is guided toward a distributor (not shown).

In the recording apparatus configured in this way, if the size of the sheet 2 is ^4, for example, the section 210 in FIG.
Suction is performed only from the section 210 in the case of B4 size.
and 21C1^3 size, from section 210゜2IC and 21B, and for ^2 size, section 21^, 2
Suction is performed from 111.2IC and 21D, and the recording sheets 2 can be held on the holding surface l^ according to size.

In addition, if it becomes necessary to move the platen 1 from a predetermined sheet holding position, the bundles from the second suction tubes 26^ to 26D to the third suction tubes 36^ to 360 are connected to the elbow joints 17 and 20. Rotate while remaining flat through
Since it can be rotated approximately around 71I14, no unreasonable displacement or twisting will occur, and the shape of the extraction hole 15 is also formed so that there will be no interference with the rotational movement. The suction tube does not bend or come into contact with other parts, and the bending angle of the second elbow joint 20 can be set freely, allowing for flexibility in the placement of the distributor. This contributes to making the entire device more compact.

In addition, in the embodiment described above, a case has been described in which the platen 1 is divided into a plurality of sections so that recording materials of different sizes can be suctioned, but the application of the present invention is not limited to this. Needless to say, the platen may be suitable for one type of size, so there may be no partition, and there may be only one suction tube.

(Effects of the Invention) As described above, according to the present invention, the side plate is provided with a suction tube draw-out hole formed in accordance with the moving direction of the platen, and the suction tube is led to the outside of the side plate through the draw-out hole. Each of the tubes is directed by a first elbow joint along the side plate approximately in the direction of movement of the platen, and by a second elbow joint along the side plate approximately in the direction of the suction means, so that when the platen is moved. It is possible to displace the suction tube along the side wall without forcing the suction tube to twist or cause sudden deformation, and there is no need to set up a large space outside the side wall for the suction tube. The overall size can be made more compact.

Also,? ! i Since the suction tube and suction means can be separated from the main body of the recording device simply at the elbow joint, parts can be easily replaced, which greatly contributes to general maintenance.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing an embodiment of the present invention, FIG. 2 is a front view of a platen and its suction system according to the present invention, FIG. 3 is a side view of the suction system shown in FIG. 2, and FIG. 4 is a side view showing the state when the suction system shown in Fig. 3 is moved together with the platen, Fig. 5 is a configuration diagram showing the conventional example, and Figs. 68 and 8B show the piping state of the conventional suction system. FIG. 2 is a front view and a side view, respectively. 1...Platen, l^...Holding surface, l...Back surface, 2...Recording sheet, 3...Recording head, 5^~5D...Air outlet, 8...Side plate , 15... Pull-out hole, 168-160... Suction pipe, 17.20... Elbow joint, 268-26D... Second suction pipe, 36^-380... Third Suction tube. \Ochi Awn Nori Bow Bar 2 bites e1mξka

Claims (1)

[Scope of Claims] 1) A platen of a housing capable of sucking and holding a recording material is provided at a position facing the recording head, and the platen is supported by a side plate and the direction in which the platen is pulled away from the recording head is provided. In the recording apparatus, a flexible suction tube for suctioning air from the platen in order to suction the recording material is drawn out to the outside of the side plate and guided to the suction means. A hole for drawing out the suction tube is formed in accordance with the moving direction of the platen, and the suction tube drawn out to the outside of the side plate through the drawing hole is guided along the side plate by a first elbow joint to the platen. The suction tube is bent almost in the direction of movement, and the bent suction tube is
A recording device characterized in that the recording device is bent along the side plate substantially in the direction of the suction means by an elbow joint.