JPS608072A - Method and tool for screen printing - Google Patents

Abstract

PURPOSE:To simply perform screen printing on the curved surface of a corrugated plate, etc., by a method in which a screen of a shape profiling the nonlinear region of the surface to be printed is overlaid on the surface to be printed of an object and a squeegee of the same shape as the screen is pressingly slided on the screen. CONSTITUTION:A screen 2 is formed linearly along the Y-axial direction in such a way as to enable it to be overlaid on the surface 1a to be printed of an object 1 and also to form a region profiling the shape of the surface 1a along the X- axial direction. The screen 2 so formed is attached to a screen fixing frame 3. A squeegee 4 having a sliding face 4a with a region profiling the shape in the X-axial direction of the picture-forming region B of the screen 2 is contacted with the screen 2 to press ink 9 on the screen 2 under a proper printing pressure by its inclined face 4b.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to a surface of a single-width corrugated tile, split bamboo tile, etc., which is formed in a straight line along the Y-axis and along the X-axis perpendicular to the Y-axis. The present invention relates to a screen printing method in which a surface having a non-linear region is used as a printing surface, and a printing tool used in this printing method.

Traditionally, the screens of screen printing tools are flat screens. Therefore, screen printing on a printing surface having a curved surface such as a corrugated plate surface has been impossible.

An object of the present invention is to provide a screen printing method and a printing tool that can easily perform screen printing on a curved printing surface such as a corrugated plate surface.

Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

FIG. 1 is a cross-sectional perspective view showing a screen printing state in which an outer width water tile is used as a printing material 1, and 2 in the figure is a screen. The screen 2 covers the printing surface 1 of the printing material 1.
A screen is formed by forming a straight line along the Y-axis direction and forming an area that follows the shape of the printing surface 1a along the Y-axis orthogonal to the Y-axis so that the screen can be placed overlapping the printing surface 1a. It is attached to the fixed frame 3 as follows. That is, a region 1ifflA having a shape that follows the shape of the printing surface 1a of the printing material 1 in the X-axis direction is formed on each lower surface 3a' of the opposing sides 3a, 3a (only one is shown in the drawing) of the screen fixing frame 3. and the lower surfaces 3a', 3a of the screen fixing frame 3.
'.

3b' and 3b' have screens 2 (e.g. 80 to 10 made of polyamide resin or polyester resin).
The four peripheral edges 2a of the 9-mesh screen are attached by appropriate means such as adhesive fixing or nailing. Image forming portions 2b, 2b, . . . are formed in advance on the screen 2 in an area hi2B superimposed on the substrate 1 by an appropriate method such as photolithography. Squeegee 4 is a sponge,
A sliding surface 4a is formed of a soft elastic material such as soft rubber, and has a region that follows the shape of the image forming region B of the screen 2 in the X-axis direction. A squeegee holder 5 that holds the squeegee 4 is attached to a guide block 6 that is movable up and down, which is disposed so as to be movable back and forth along the Y axis, and the guide block 6 and the squeegee holder 5 are A compression spring 7.7 provided therebetween is configured to receive a repulsive force from the printing surface 1a during printing. The squeegee 4 has an inclined surface 4b near the lower front end thereof, and is configured to press the ink 9 onto the screen 2 with appropriate printing pressure, but the squeegee 4 is not limited to this and is not shown in the drawings, but the inclined surface 4b may be formed. The squeegee holder 5 and the squeegee 4 may be tilted to the front side at an appropriate angle without doing so.

FIG. 2 is a front sectional view showing another embodiment of the printing tool according to the present invention, and the difference from the above embodiment is that the printing material 1 is
' has a scalene mountain shape, and the printing substrate 1/
The point is that it is placed on the support base 12' so that the cross section is in the shape of a square. The purpose of uniformly placing the printing material 1' in a V-shape is to press the ink (path shown) onto the screen 2' with a substantially uniform printing pressure over the entire width of the printing material 1/1. It's for a reason.

FIG. 3 shows an embodiment of still another aspect of the printing tool according to the present invention, and the main difference from the previous embodiment is that the printing material 1' is a corrugated plate, and the squeegee 4 made of a soft elastic material An air bladder 8 made of a rubber tube or the like is interposed between the squeegee holder 10 and the squeegee holder 10, so that the pressing force of the sliding surface 4''a acting along the normal direction of the screen 2# is applied to the entire width along the Y axis. The point is that it is configured so that the printing pressure is approximately uniform as it rotates.

Next, the screen printing method according to the present invention will be explained based on the embodiment shown in FIG. First, the printing material 1 is placed at a predetermined position on the support stand 12. Next, the screen fixing frame 3 is moved above the printing material 1, and the image forming area B of the screen 2 is superimposed on the printing material surface 1a. In advance, while moving the squeegee 4, which is placed in a standby position, forward in the direction of arrow C, ink (for example, paint for painting ceramics, etc.) on the screen 2 is applied as the squeegee 4 presses and slides. 9 to image forming section 2
Printing surface 1a through the screen eyes of b, 2b...
Extrude upward to print. When the squeegee 4 passes through the image forming area B of the screen 2, the screen fixing frame 3 is separated from the printing material 1 to complete screen printing.

As described in detail above, the screen printing method and printing tool according to the present invention are formed in a curved shape along the Y axis like a baseboard tile, and are curved along the Y axis perpendicular to the Y axis. Since screen printing can be easily performed on a printing surface having a linearly formed area, it has an excellent effect of enabling screen printing on a curved surface, which was conventionally considered impossible.

[Brief explanation of the drawing]

FIG. 1 is a sectional perspective view showing an embodiment of the present invention, FIG. 2 is a sectional view showing an embodiment of another aspect of the invention, and FIG. 3 is a main part of an embodiment of still another aspect of the invention. It is a partially cutaway perspective view. 1a...Print surface 2...Screen 3...Screen fixing frame 4...Squeegee Patent applicant Ina Seito Co., Ltd. Agent Patent attorney Toshihiko Uchida

Claims (1)

[Claims] 1. It is formed in a straight line along the Y axis, and
In a method of screen printing on a printing surface that has a region formed in a non-linear manner along the X-axis perpendicular to the axis, an area that follows the shape of the printing surface in the X-axis direction is formed and the screen is fixed. After placing the screen linearly attached to the frame along the Y-axis on the printing surface,
The sliding movement of a squeegee, which has a region that follows the shape of the axis, is pressed and slid on the screen along the Y axis, and the ink on the screen is pushed out through the screen holes onto the printing surface by the sliding movement of the squeegee, thereby printing. A screen printing method characterized by: 2. In a printing tool consisting of a combination of a screen and a squeegee attached to a screen fixing frame, the screen is
The squeegee has a region formed linearly along the axis and arbitrarily formed non-linearly along the X-axis orthogonal to the Y-axis, and the pressing sliding surface of the squeegee is in the X-axis direction of the screen. A printing tool characterized by being formed to follow the non-linear shape of.