JPH0431580Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a printed matter having a pattern that allows the viscosity of ink used for printing to be measured.

[Conventional technology]

For example, as various display surfaces on the operation surface of electronic devices.
A film base with a predetermined pattern printed on it is used. Usually these printings are done by screen printing. In this printing, a resin film is formed on a net with grids of a predetermined size, and the open part of the film is used as a printing pattern, and the ink that passes through this part is attached to the printing material such as a film base. This is a method of printing. In this case, as printing progresses, the solvent in the printing ink tends to evaporate and the viscosity of the ink increases, but when the viscosity increases beyond a predetermined value, it becomes difficult for the ink to pass through the printed pattern, and the pattern There is a possibility that in a narrow portion, ink cannot pass through and some portions are not printed. On the other hand, if the viscosity of the ink is too low, there is a risk that bleeding may occur after printing.

[Problem that the invention attempts to solve]

For this reason, it is necessary to control the viscosity of printing ink, but conventionally, a fixed amount of printing ink was taken out during printing and the viscosity of the ink was measured using a rotational viscometer. However, this method cannot measure the viscosity of ink in real time because it requires a considerable amount of ink to measure the viscosity and requires a lot of labor and time to measure the viscosity. Therefore, this method is inappropriate for controlling viscosity in the printing process, and there is a desire to develop a more practical method.

[Means for solving problems]

The present invention was constructed to solve the above-mentioned problems, and consists of forming a plurality of viscosity measurement patterns with different widths in at least one of the vertical and horizontal directions, and applying these viscosity measurement patterns to a base film, etc. This is a printed matter that is configured to print on a blank area of a printed object where no predetermined printing is performed, and measure the viscosity of the ink currently being printed based on the printing state of this pattern.

[Effect]

As described above, the present invention prints multiple viscosity measurement patterns with different widths at the same time as printing a predetermined pattern, so that the viscosity of the ink used for printing the predetermined pattern can be determined at the same time as printing the predetermined pattern. The viscosity of the ink can be adjusted without delay.

〔Example〕

Embodiments of the present invention will be described in detail below.
FIG. 1 shows an ink viscosity measurement pattern. This pattern consists of a group of five linear patterns arranged in the horizontal direction with different widths (hereinafter referred to as "horizontal patterns"), and a group of linear patterns arranged in the vertical direction with different widths (hereinafter referred to as "vertical patterns"). )
By intersecting each other at right angles, a cross-shaped pattern is formed as a whole. For example, the width of this pattern is 0.5 mm for W ₁ , 0.4 mm for W ₂ , 0.3 mm for W ₃ , and 0.3 mm for W ₄ .
0.2 mm, and _W5 is 0.1 mm, thereby forming the parallel cross-shaped pattern as a whole.

FIG. 2 shows a state in which the pattern shown in FIG. 1 is printed on the margin of a printing material 2 on which a predetermined printing pattern 1 has been printed. The cross-shaped viscosity measurement pattern shown in FIG. 1 is printed corresponding to each color A, B, C, and D, respectively. In other words, when printing color A, the viscosity measurement pattern A is created using printing ink of that color.
In addition, when printing color B, viscosity measurement pattern B is printed using printing ink of that color, and when printing each color, a viscosity measurement pattern corresponding to each color is printed. At this time, for example, if the ink is assumed to pass through all patterns up to the pattern with width W ₁ with appropriate ink viscosity, for example, if the part with width W ₁ is not printed,
This means that the viscosity of the ink has increased and the ink no longer passes through this width. For this reason, measures such as increasing the amount of solvent in the ink are immediately taken to maintain the ink at an appropriate viscosity. In this case, if at least the narrowest pattern among the widths of each pattern A to D is made narrower than the minimum width of the predetermined print pattern 1, the ink can be absorbed before the predetermined print pattern 1 is affected. The viscosity can be readjusted to an appropriate state. Furthermore, if the viscosity of any of the inks is too low, the pattern will smear after being printed using that ink, and this condition will become clear.

FIG. 3 shows another embodiment.

In this example, instead of forming the pattern for viscosity measurement in a cross-shaped pattern, a parallel pattern 3
This is to simplify the pattern. In the illustrated case, the pattern is formed using only a horizontal pattern, but it may also be formed using only a vertical pattern.

The configuration in which the horizontal pattern and vertical pattern are arranged in the first embodiment allows the printing condition to be judged best, but it is also possible to measure the viscosity almost satisfactorily with only one of the horizontal and vertical patterns. .

Incidentally, it is a matter of course that this viscosity measurement pattern is separated from the final printed product.

〔effect〕

As described above, the present invention prints a viscosity measurement pattern at the same time as printing a predetermined printing pattern, so that the viscosity of the ink currently being printed can be immediately determined, and the viscosity of the printed matter due to changes in ink viscosity can be easily determined. Viscosity adjustments can be made before the effects occur.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing a printing ink viscosity measurement pattern showing the first embodiment of the present invention, Fig. 2 is a partial plan view of a printed matter printed with this printing ink viscosity measurement pattern, and Fig. 3 is a diagram showing another It is a figure which shows the pattern for printing ink viscosity measurement which is an Example. 1... Predetermined printing pattern, 2... Printing substrate,
3... Printing ink viscosity measurement pattern.

Claims (1)

[Claims for Utility Model Registration] (1) In a device that prints a predetermined printing pattern on a printing substrate such as a film base, a plurality of linear patterns of different widths are formed and arranged almost parallel to each other to print ink. A group of patterns for viscosity measurement, and at least one of the horizontally positioned pattern group and the vertically positioned pattern group is printed on the margin of the printed matter for each color of ink used. A printed matter having a pattern for measuring viscosity. (2) A printed matter having a pattern for measuring viscosity, as set forth in claim (1) of the utility model registration, characterized in that the horizontal pattern group and the vertical pattern group are overlapped to form a cross-shaped pattern.