JP6111523B2 - Printing apparatus and printing method - Google Patents

Description

  The present invention relates to a printing apparatus and a printing method using a method of scraping ink on a plate with a squeegee.

  Generally, when printing is performed using a squeegee, such as screen printing or gravure offset printing, the ink is dropped on the plate and the ski is spread on the plate with the squeegee while sliding the squeegee on the plate. And print on the substrate.

  In such a printing method using a squeegee, when a large number of sheets are printed, the ink gradually adheres to the squeegee, so the amount of ink on the plate decreases, and as a result, extra ink is added. There was a problem that the material cost would be required. Furthermore, the ink attached to the squeegee is removed manually, which is inefficient.

  FIG. 3 is a schematic view of the squeegee holder 11, the squeegee 21, and the plate 41, as viewed from the side, provided in the printing apparatus using the above-described general printing method using a squeegee. In this printing apparatus, after the squeegee 21 is moved downward and brought into contact with the plate 41, the ink 31 on the plate 41 is scraped off while moving (sliding) the squeegee 21 in the horizontal direction, so that the upper surface of the plate 41 is removed. The ink 31 is filled in the opening portion of the arranged mask. The ink 31 pushed in the horizontal direction by the squeegee 21 moves while rolling in the traveling direction. At that time, most of the ink 31 moves while rolling, but a part of the ink 31 moves upward along the squeegee 21 and adheres to the squeegee 21 as shown in FIG. The amount of ink adhering to the upper side of the squeegee 21 increases every time printing is performed, and as a result, the remaining amount of the ink 31 on the plate 41 gradually decreases.

  For example, in Patent Document 1, as a mechanism for automatically removing ink adhering to the squeegee, an ink push-out plate capable of sliding contact along the ink scraping surface of the squeegee is installed on the squeegee to Proposes a method of extruding and removing ink adhering to the squeegee. Specifically, as shown in FIG. 5, the lower end of the ink push-out plate 5 moves along the surface of the squeegee 21 to which the ink has adhered, so that the adhered ink 33 is scraped and dropped onto the plate 41. I am letting.

JP 2010-36443 A

  However, in the conventional method described above, if the ink adhering to the squeegee 21 is removed many times by the ink extruding plate 5, the ink 33 gradually adheres to the ink extruding plate 5 as shown in FIG. As a result, in addition to the squeegee 21, the ink adhering to the ink extrusion plate 5 must be removed.

  Therefore, an object of the present invention is to provide a printing apparatus or the like that can automatically drop ink attached to a squeegee onto a plate automatically and reuse it.

  In order to achieve the above object, the present invention employs the following configuration. In addition, reference numerals in parentheses, explanations, and the like indicate correspondence with embodiments described later in order to help understanding of the present invention, and do not limit the scope of the present invention.

A first aspect of the present invention is a printing apparatus that performs printing by squeezing the ink (31) on the plate (41), the squeegee (21) squeezing the ink on the plate, and the squeegee ink. And an ink extruding plate (61) whose tip is in contact with the adhering surface to which the ink adheres. The ink extruding plate has an arc-shaped cross section, the arc-shaped opening direction faces downward, and is opposite to the tip. end of the side is, so as to be positioned below the tip, tip contact the attachment surface, the distal end portion on the attachment surface, characterized in that the moving contact.

According to the first aspect, the ink attached to the squeegee can be automatically dropped onto the plate and reused. Further, the ink attached to the squeegee can be automatically and efficiently dropped on the plate for reuse. Furthermore, it is possible to prevent the ink from getting over the other end of the arc portion of the ink extrusion plate and falling on the plate. Further, the ink attached to the attachment surface can be dropped on the plate at an arbitrary timing.

In the second aspect, the diameter of the inner wall of the ink extruding plate may be smaller than the diameter of the ink (31) collected in a columnar shape generated on the plate during squeezing.

According to the second aspect, the ink attached to the squeegee can be automatically and efficiently dropped onto the plate for reuse.

According to a third aspect, there is provided a printing method for performing printing by squeezing the ink on the plate, comprising a squeegeeing step for squeezing the ink on the plate with a squeegee. The tip of the ink extrusion plate having an arc shape in cross section is positioned on the attachment surface to which the ink adheres, the opening direction of the arc shape is directed downward, and the end opposite to the tip is located below the tip. as brought into contact, on the attachment surface the tip, characterized in Rukoto moving contact.

According to the third aspect, the same effect as in the first aspect can be obtained.

  ADVANTAGE OF THE INVENTION According to this invention, the printing apparatus etc. which can drop the ink adhering to a squeegee automatically on a plate efficiently and can be reused can be provided.

1 is an example of a schematic view of a squeegee holder, a squeegee, an ink extrusion plate, and a plate provided in a printing apparatus according to an embodiment of the present invention as viewed from the side. Another example of the schematic view of the squeegee holder, the squeegee, the ink extrusion plate, and the plate provided in the printing apparatus according to the embodiment of the present invention as seen from the side. Schematic view of a squeegee holder, squeegee, and plate provided on a conventional printing device as seen from the side Schematic view of a squeegee holder, squeegee, and plate provided on a conventional printing device as seen from the side Schematic view of a squeegee holder, squeegee, ink extruding plate, and plate provided in a conventional printing apparatus as seen from the side Schematic view of a squeegee holder, squeegee, ink extruding plate, and plate provided in a conventional printing apparatus as seen from the side

  An embodiment of the present invention will be described below with reference to the drawings.

  FIG. 1 is a schematic view of a squeegee holder 11, a squeegee 21, an ink extrusion plate 61, and a plate 41 provided in a printing apparatus (hereinafter referred to as the present printing apparatus) according to an embodiment of the present invention, as viewed from the side. The present printing apparatus shown in FIG. 1 has a configuration in which the ink extruding plate 5 is replaced with an ink extruding plate 61 with respect to the conventional printing apparatus described with reference to FIG.

  As shown in FIG. 1, the ink extruding plate 61 is a plate having an arc shape in cross section, and is installed on the squeegee 21 so that the opening direction faces the plate 41 direction (that is, downward). Then, in the process of scraping the ink 31 on the plate 41 while moving (sliding) the squeegee 21 in the horizontal direction by the printing apparatus and filling the ink 31 into the opening portion of the mask arranged on the upper surface of the plate 41. 6, when the arc-shaped ink push-out plate 61 moves (slids) downward on the squeegee 21, the ink 35 attached to the squeegee 21 becomes one end of the arc-shaped ink push-out plate 61. Is scraped off from the squeegee 21, flows along the arc-shaped inner wall of the ink extruding plate 61, and falls on the plate 41 from the other end of the ink extruding plate 61. The ink pushing plate 61 returns to the original position on the squeegee 21 after dropping the ink 35 attached to the squeegee 21.

  As a result, according to the present printing apparatus, the ink attached to the squeegee 21 can be automatically dropped onto the plate 41 and reused, and the ink adheres to the ink extrusion plate as in the prior art (see FIGS. 5 and 5). 6) can be effectively prevented. As a result, according to this printing apparatus, the ink attached to the squeegee 21 can be automatically dropped onto the plate 41 and reused.

  In this printing apparatus, the ink extrusion plate 61 is installed at an angle of the ink extrusion more than the contact point between one end of the arc portion of the ink extrusion plate 61 and the squeegee 21 with the opening direction of the arc-shaped ink extrusion plate 61 being downward. It is preferable that the other end of the circular arc portion of the plate 61 is lowered (see FIG. 1). By setting this installation angle, it is possible to prevent the ink from getting over the other end of the arc portion of the ink extruding plate 61 and falling on the plate 41.

  In this printing apparatus, as shown in FIG. 2, if the size of the arc of the ink extruding plate 61 is too large, the ink 35 attached to the inner wall of the ink extruding plate 61 is difficult to be pushed out, so that the ink 35 is difficult to fall downward. There is a case. Therefore, although not limited to this, it is desirable that the diameter A of the inner wall of the arc-shaped ink push-out plate 61 has a relationship of A <a with respect to the maximum ink rolling diameter a. Here, the maximum ink rolling diameter a is the maximum diameter of the ink 31 collected in a cylindrical shape generated on the plate 41 during squeezing (see FIG. 1).

  In the above-described embodiment, the configuration in which the ink 61 adhering to the squeegee 21 is removed by the ink pusher plate 61 contacting and moving (sliding) on the squeegee 21 has been described. However, as a configuration in which the ink extruding plate 61 is fixed to the squeegee 21 and does not move, the ink extruding plate 61 adheres to the squeegee 21 and is pushed up above the squeegee 21 by using the force that is pushed up. The squeegee 21 may be automatically peeled off and dropped.

  In the above-described embodiment, the ink extruding plate 61 has been described as having an arc-shaped cross section. However, in the ink extrusion plate 61, the cross section of the surface facing the plate 41 (that is, the lower surface) may be an arc shape, and the upper surface of the ink extrusion plate 61 may have any shape.

  Although the present invention has been described in detail above, the above description is merely illustrative of the present invention in all respects and is not intended to limit the scope thereof. It goes without saying that various improvements and modifications can be made without departing from the scope of the present invention.

  The present invention can be used for printing that performs squeegeeing, and is useful when it is desired to automatically drop ink attached to a squeegee onto a plate for reuse.

5, 61 ... Ink extrusion plate 11 ... Squeegee holder 21 ... Squeegee 31, 32, 33, 35 ... Ink 41 ... Plate

Claims (3)

A printing apparatus that performs printing by squeezing ink on a plate,
A squeegee to squeeze the ink on the plate;
An ink extruding plate having a tip abutting against an adhesion surface to which ink of the squeegee adheres;
The ink extrusion plate has an arc shape in cross section,
Opening direction orientation below the arc shape and the opposite end of the tip, so as to be positioned below the tip, the tip in contact with the attachment surface,
The printing apparatus , wherein the tip portion contacts and moves on the adhesion surface .   2. The printing apparatus according to claim 1, wherein a diameter of an inner wall of the ink extruding plate is smaller than a diameter of ink collected in a cylindrical shape generated on the plate during the squeezing. A printing method for printing by squeezing ink on a plate,
A squeegee step for squeezing the ink on the plate with a squeegee;
In the squeezing step, the tip of the ink extrusion plate having an arc shape in cross section is attached to the attachment surface to which the ink of the squeegee adheres, the opening direction of the arc shape is directed downward, and the opposite side of the tip portion end of, abutted so as to be positioned below the tip,
Wherein said tip portion on the deposition surface, characterized in Rukoto moving contact, printing method.

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