JPH06102386B2 - Inkjet recording device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a structure of an inkjet recording apparatus, and more specifically, to a structure of a discharge port of recorded paper in the inkjet recording apparatus.

[Prior art]

The ink jet recording apparatus records ink droplets ejected from a nozzle group provided on a print head by adhering the ink droplets onto a sheet.

In this case, a roll sheet or a cut sheet is used as the paper, the paper is fed to the print head portion by the paper feed roller, and the recorded paper is discharged to the outside from the discharge port provided on the upper part of the print head. . When using a roll sheet, a cutter is provided at this discharge port, and a sheet is cut into a desired length to create a recorded matter.

By the way, conventionally, a bail roller pressed against a platen roller or an outlet edge of the discharge port has been used as a means for guiding the recorded sheet to the discharge port. It is practiced to form the outlet edge with a cutter and a cutting edge.

However, since the ink jet recording apparatus records ink droplets by adhering it, when the distance from the print head is small like a bail roller, the paper is still wet and the bail roller contacts the printing surface and the paper is not printed. There is a problem that it gets dirty, and even when the outlet is provided at a position considerably higher than the print head, the paper is not yet sufficiently dried, so that the print part is rubbed at the exit edge and the paper is easily soiled. It was

If you try to prevent the paper from getting dirty by providing the discharge port at a high position, the size of the device will increase, the amount of paper waste will increase, or the distance between the position to check the print status and the recording head will increase. Problem arises.

〔Purpose〕

An object of the present invention is to provide an ink jet recording apparatus which can solve the problems of the prior art and can suppress the stain of the paper due to the non-drying of the ink, even if the distance from the recording head to the discharge port is not particularly set large. That is.

〔Overview〕

The present invention, in an ink jet recording apparatus for recording ink droplets ejected from nozzles provided in a print head on a sheet, allows a spur-shaped wheel that comes into contact with the recording surface of the sheet discharged after recording to be rotatable. The above-mentioned object is achieved by adopting the configuration of mounting.

A second aspect of the invention is an ink jet recording apparatus that records ink droplets ejected from nozzles provided in a print head on a sheet and rotates a spur wheel that contacts a recording surface of a sheet that is ejected after recording. It is possible to more efficiently achieve the above object by providing a cleaning member that is freely mounted and that cleans the outer periphery of the wheel.

〔Example〕

 The present invention will be specifically described below with reference to the drawings.

FIG. 1 shows the outer appearance of an inkjet recording apparatus suitable for carrying out the present invention. A slit-shaped opening is provided on the upper surface of the apparatus to cover the discharge port 1 for recording paper, that is, the paper width. The discharge port 1 is formed by a fixed ridge portion 2 integrated with the outer case and a cutter 3 which is removably positioned and attached to the fixed ridge portion.

The exit edge of the cutter 3 is sharpened to form a blade 4 for cutting paper. The cutter can be made of metal or hard plastic, but it is preferable that the cutter can be visually checked (checked) by being made of a transparent acrylic molded product, for example.

FIG. 2 shows a cross section of the recording head portion and the discharge port, and the paper 6 is fed along the periphery of the paper feed roller 5.
Is fed upward between the platen roller 7 and the recording head 8 and, after recording, is discharged from the discharge port 1 to the outside as shown in the figure. When the paper 6 is discharged for a predetermined length, the paper 6 is pressed against the blade 4 to be cut and taken out as a recorded paper.

However, as shown in FIGS. 3 and 4, a spur-shaped wheel 9 that comes into contact with the paper 6 and presses the paper away from the cutter 3 is rotatably supported by the cutter 3 forming the discharge port 1. Has been done. A sharp contact end 10 is formed in a tooth shape on the outer periphery of the wheel 9 as shown in the drawing.
Following the movement of the paper 6, the paper 6 rolls without slipping.

The material of the wheel 9 can be appropriately selected such as metal or plastic, but it is preferably formed of a porous material such as a sintered alloy or a porous ceramic in order to obtain a capillary phenomenon that adheres and sucks undried ink. Further, according to the porous material, for example, it is made of a white material, and the time of conversion or cleaning can be determined by the degree of color change due to ink absorption.

The wheel 9 is, as shown in FIGS. 3 and 4,
It is axially supported in a recess 11 formed on the inner surface of the cutter 3. Further, a plurality (for example, 2 to 3) of the wheels 9 may be provided at a predetermined interval in the length direction of the cutter 3, but only one wheel 9 may be provided at the central portion in the length direction.

Further, inside the recess 11, a cleaning member 12 that slides on the contact end 10 of the wheel 9 to remove ink stains is provided. The cleaning member is formed of, for example, a sponge-like ink absorber.

According to the embodiment described above, since the spur-shaped wheel 9 that comes into contact with the recording surface of the paper 6 is rotatably attached to the discharge port 1, it is possible to eliminate the rubbing of the paper 6 at the discharge port 1 and to attach it. It was possible to prevent the paper 6 or the discharge port 1 from being contaminated by rubbing when the ink was not sufficiently dried.

The wheel 9 can be mounted by utilizing one side of the discharge port 1 (cutter 3 in the illustrated example) and only pivotally supporting the discharge port 1, and a simple structure does not increase the size of the device and stains the paper. Prevention was achieved.

Further, since the cleaning member 12 which is in sliding contact with the wheel 9 is provided, the contact portion of the wheel 9 with the paper 6 can be wiped every one rotation, whereby the paper 6 can be always kept clean.

The present invention can be similarly applied to an inkjet recording device using a cut sheet.

〔effect〕

As is clear from the above description, according to the present invention, in the ink jet recording apparatus for recording the ink droplets ejected from the nozzles provided in the print head on the paper,
Since the spur-shaped wheel that comes into contact with the recording surface of the paper that is ejected after recording is rotatably attached, it is possible to eliminate the rubbing of the paper at the ejection port, and thus when the attached ink is not sufficiently dry. (EN) Provided is an inkjet recording device capable of preventing a paper sheet or a discharge port from being contaminated by rubbing.

According to the second aspect of the invention, in an ink jet recording apparatus for recording ink droplets ejected from nozzles provided in a print head on a sheet, the spur-like pattern is in contact with the recording surface of the sheet discharged after recording. Since the wheel is rotatably mounted and the cleaning member for cleaning the outer periphery of the wheel is provided, it is possible to eliminate the rubbing of the paper at the discharge port, and the paper due to the rubbing when the adhered ink is not sufficiently dried. Alternatively, there is provided an ink jet recording apparatus that can prevent the discharge port from being soiled more efficiently.

[Brief description of drawings]

FIG. 1 is an external perspective view of an inkjet recording apparatus suitable for carrying out the present invention, FIG. 2 is a cross-sectional view of an essential part of an embodiment of the inkjet recording apparatus according to the present invention, and FIG. 3 is a wheel of FIG. Cross-sectional view of the mounting part, Fig. 4 is the line in Fig. 3.
FIG. 4 is a sectional view taken along line IV-IV. 1 ... discharge port, 3 ... cutter, 6 ... paper, 8 ... printing (recording) head, 9 ... wheel, 12 ... cleaning member.

Claims (2)

[Claims] 1. In an ink jet recording apparatus for recording ink droplets ejected from nozzles provided on a print head on a sheet of paper, a spur wheel which is in contact with a recording surface of a sheet of paper ejected after recording is rotatable. Inkjet recording device attached to. 2. In an ink jet recording apparatus for recording ink droplets ejected from nozzles provided on a print head on a sheet, a spur wheel which is in contact with a recording surface of a sheet discharged after recording is rotatable. An ink jet recording apparatus, characterized in that a cleaning member is mounted on a cleaning member for cleaning the outer periphery of the wheel.