JP2537930Y2 - Sheet temperature display - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet-like temperature display. More specifically, a plurality of messages corresponding to the temperature change are printed and formed, and a direction indication display for indicating the direction of the message in the temperature range corresponding to each of the messages is alternatively displayed to display a target message. Regarding the sheet-shaped temperature display body configured to be distinguishable, beverages, foods, toys,
It is applied as a temperature indicator in a life related field or the like.

[0002]

2. Description of the Related Art A sheet-shaped temperature indicator provided with a plurality of temperature indicators is disclosed in Japanese Utility Model Laid-Open Publication No. 60-56242.

[0003]

[Problems to be Solved by the Invention] The present invention relates to a temperature indicator of this type, which makes effective use of a printing space and arranges temperature information among a plurality of temperature information arranged in a limited printing space. An object of the present invention is to provide a sheet-like temperature display suitable for packaging foods, beverages, frozen desserts, labels, and the like, which allows information corresponding to a change to be selectively and effectively read.

[0004]

The present invention will be described with reference to the drawings. The temperature indicator 1 according to the present invention has a plurality of messages 31 and 32 related to temperature printed on the surface of the support 2 and appears at a temperature corresponding to each of the messages 31 and 32. Direction indication displays 41 and 42 for instructing a message are printed and formed, and the direction indication displays 41 and 42 are alternatively displayed corresponding to a temperature change so that the direction of the corresponding message can be visually recognized. A sheet-like temperature indicator, wherein said direction indicator indicator 4
In one of the direction indication displays 1 and 42, the direction indication display is formed as a blank image on a part of the reversible thermochromic layer 5 that develops at a temperature corresponding to the message in the indicated direction. The remaining reversible thermochromic layer, excluding the display, is overprinted with the other directional indicator, and is configured to be seen in a developed state beyond the directional indicator. .

The reversible thermochromic layer 5 comprises a conventionally known thermochromic material, for example, an electron-donating color-forming organic compound, a color developer of the compound, and a medium which causes a color reaction between the two. Thermochromic material containing three components of the following compound or a thermochromic material exhibiting color change in the form of fine particles of a resin solid solution of the above component (for example, JP-B-51-35414, JP-B-51-44706, 1-293
No. 98, etc.), a desired direction instruction display is formed as a blank image by using a color material including the color material.

The direction indication display is not limited to the above-described extracted image, but may be a printed image made of a reversible thermochromic ink or a printed image made of a non-color-changing ink. The reversible thermochromic layer 5, which forms the direction indication display as a blank image, requires a configuration that exceeds the visual density of another direction indication display in a developed color state. Specifically, the present invention is not limited to a combination of shades of hues of the same system, but may be a combination of hues different from each other.

The direction indicating display may be an arrow or a symbol indicating a direction (for example, a finger mark or a needle).

[0008]

According to the present invention, one of the direction indication displays, which respectively indicate the directions of a plurality of temperature-related messages printed and formed on the surface of the support member 2, appears in response to a temperature change. Indicate the direction of the corresponding message.

In a system in which the non-color-changing direction indication display is visually recognized in a normal temperature range, in a temperature lower than normal temperature range, the direction indication is performed by a thermochromic surface superimposed on the direction indication display. The concealment (visible beyond the non-discoloration direction indication display) is performed, and a direction indication display arranged as a blank image in the other half is revealed to indicate a corresponding message.

In addition, a direction indication display formed by printing with a thermochromic ink that develops in a temperature range lower than room temperature indicates a corresponding message by appearing in a corresponding temperature range. A thermochromic surface overprinted on the direction indication display develops, obscures the direction indication display and obstructs vision, reveals a direction indication display arranged as a blank image in the other half, and displays a corresponding message. Instruct.

[0011]

Embodiment 1 "WARM" and "COLD" messages 31 and 32 are printed in parallel on the surface of white printing paper 2 with a light blue non-color-changing ink, and the message 31 is directed leftward to indicate the direction of the message 31. An arrow 41 was formed by printing. Next, a reversible thermochromic ink that develops a deep blue color at 10 ° C. or less and loses color in a temperature range exceeding 10 ° C. has a thermochromic surface in the left half and a rightward arrow 42 in the right half as an image. The arranged reversible thermochromic layer 5 was formed by printing such that the thermochromic surface concealed the left arrow 41 and the right arrow 42 indicated "COLD".

On the display 1, a printed image of a leftward arrow 41 made of light blue non-color-changing ink appears in the normal temperature range, and indicates the direction of the message 31 "WARM". At the environmental temperature, the thermochromic layer 5 appears dark blue, the printed image of the left arrow 41 is concealed and becomes invisible, and the right arrow 42 appears as a blank image on the dark blue thermochromic surface. Message 32 "COL
D ”.

The left arrow 41 and the right arrow 42 are
It manifests reversibly and interchangeably with temperature changes and indicates the direction of the corresponding message.

[0014]

Example 2 On the surface of the white printing paper 2, each of the messages 31, 32 of “Morgo” and “Overdue” is printed in parallel with light blue non-discoloring ink, and the light blue color is set at 10 ° C. or less. In the left half part, the above-mentioned message 31 is developed by a reversible thermochromic ink which develops color in the temperature range exceeding 10 ° C.
Is formed by printing a left-pointing arrow 41 instructing. Then 5
Below 32 ° C., the deep blue color appears, and the message 32
And a thermochromic surface that conceals the left arrow 41 in the left half, and has a temperature of 5 ° C.
The reversible thermochromic layer 5, which develops a deep blue color, was formed by printing.

The display 1 does not show a direction indication by a leftward or rightward arrow in the normal temperature range.
Visualize the left-pointing arrow 41 that appears light blue below ℃,
When the reversible thermochromic layer 5 was further cooled to 5 ° C. or lower, the reversible thermochromic layer 5 developed a deep blue color, concealing the left-pointing arrow 41 and making it invisible, and instead exposing a right-pointing arrow 42 formed as a blank image.

The direction indication is reversibly and interchangeably visualized by a change in temperature.

[0017]

According to the present invention, a plurality of different messages corresponding to the temperature are arranged in a row, and a corresponding direction indication is displayed at the temperature corresponding to each of the messages to display the direction of the message. Can be discriminated alternatively, making effective use of printing space, satisfying temperature indication and detection effect combined with a unique design effect as a space-saving printed display, packaging materials for food, beverages, frozen desserts, etc. It is suitable as a label or the like.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing one state of an embodiment of the present invention.

FIG. 2 is an explanatory view showing another state of the embodiment of FIG. 1;

FIG. 3 is an explanatory sectional view taken along line AA of FIG. 2;

FIG. 4 is an explanatory view showing a state of another embodiment of the present invention.

FIG. 5 is an explanatory diagram showing a second state of the embodiment in FIG. 4;

FIG. 6 is an explanatory diagram showing a third state of the embodiment in FIG. 4;

FIG. 7 is a sectional view taken along line BB of FIG. 6;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 sheet-like temperature display 2 support 31 message 32 message 41 direction indication display 42 direction indication display 5 reversible thermochromic layer

Claims (1)

(57) [Scope of request for utility model registration] 1. A plurality of temperature-related messages are printed and formed on a surface of a support, and a direction indication that appears at a temperature corresponding to each of the messages and indicates a corresponding message is printed and formed. A sheet-like temperature display body configured such that the direction indication display alternatively appears in response to a temperature change and the direction of the corresponding message can be visually recognized, and one of the direction indication displays is provided. In the direction indication display, a direction indication display is formed as a blank image on a part of the reversible thermochromic layer that develops at a temperature corresponding to the message of the designated direction, and the remaining reversible thermochromic layer excluding the direction indication display is formed. Is a sheet-shaped temperature display body which is overprinted with the other direction indication display and is configured to be visible in a developed state beyond the visual sense of the direction indication display.