CN202293713U

CN202293713U - Multicolor thermosensitive paper

Info

Publication number: CN202293713U
Application number: CN2011203570174U
Authority: CN
Inventors: 曹志雄; 王磊
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-09-22
Filing date: 2011-09-22
Publication date: 2012-07-04
Anticipated expiration: 2021-09-22

Abstract

The utility model discloses multicolor thermosensitive paper capable of displaying multicolor writing. The multicolor thermosensitive paper comprises a paper base layer, a middle thermosensitive layer and thin film protection layers, wherein the middle thermosensitive layer is subjected to color reaction when exposed to heat, and the thin film protection layers are used for separating and protecting; the thermosensitive layer is attached to the upper surface of the base layer; the thin film protection layers cover the thermosensitive layer; the thermosensitive layer comprises a plurality of sub thermosensitive layers which are superposed together; the sub thermosensitive layers are separated from one another through the thin film protection layers; each sub thermosensitive layer comprises a leuco dye layer and a color-developing agent layer which are separated from each other by a film middle layer; the leuco dye layers of the sub thermosensitive layers respectively react with the color-developing agent layers, and at least two colors can be displayed; and the color-developing agent layer, the film middle layer and the leuco dye layer of each sub thermosensitive layer can be sequentially superposed from top to bottom. When the thermosensitive paper is exposed to heat, the film middle layers of different sub thermosensitive layers can be molten because the heated temperatures of different positions are different, and marks in different colors are displayed due to color reaction, so that the effects of outstanding caution and attractiveness are achieved.

Description

The polychrome heat-sensitive paper

Technical field

The utility model relates to a kind of heat-sensitive paper, specifically, relates to a kind of polychrome heat-sensitive paper that can show multiple color writing.

Background technology

Common heat-sensitive paper generally is divided into three layers, and its lowermost layer is a paper substrate, and the second layer is the temperature-sensitive coating; The 3rd layer is thinfilm protective coating, and generally contains two kinds of materials in the heat-sensitive layer: a kind of is leuco dye, also claims recessive dyestuff; Another kind is a developer; Leuco dye and developer separate through film, and therefore, general heat-sensitive paper also can be called two combination molecule chemical type heat-sensitive papers.In the process of using, under the condition of being heated, the film between leuco dye and the developer melts; Leuco dye and developer have mixed chromogenic reaction, and the color of chromogenic reaction is too dull but this heat-sensitive paper is printed the color of perhaps faxing by the material decision of leuco dye; Can't reach the outstanding effect that shows for some important places; In addition, print when perhaps faxing picture, also directly perceived inadequately and true.

The utility model content

To above deficiency; The utility model provides a kind of polychrome heat-sensitive paper that can show multiple color writing, and it comprises paper substrate, heat-sensitive layer and thinfilm protective coating, and said heat-sensitive layer invests the upper surface of basic unit; Said thinfilm protective coating covers heat-sensitive layer; Said heat-sensitive layer comprises that several are superimposed, and can show versicolor sub-heat-sensitive layer respectively, separates through thinfilm protective coating between each sub-heat-sensitive layer.

Each said sub-heat-sensitive layer comprises that by separated leuco dye layer of membrane middle layer and developer layer the leuco dye layer of each sub-heat-sensitive layer is reacted with developer layer respectively, can show two kinds of colors at least.

The developer layer of each said sub-heat-sensitive layer, membrane middle layer and leuco dye layer are superimposed from top to bottom successively.

The beneficial effect of the utility model: the heat-sensitive layer of the polychrome heat-sensitive paper of the utility model comprises that several are superimposed; Can show versicolor sub-heat-sensitive layer respectively, separate through thinfilm protective coating between each sub-heat-sensitive layer, when heat-sensitive paper is heated; Diverse location is because heating temperature is different; Can produce chromogenic reaction and show the vestige of different colours so that the membrane middle layer of different sub heat-sensitive layer is melted, remind and effect attractive in appearance to reach outstanding.

Description of drawings

Fig. 1 is the structural representation (analysing and observe) of the polychrome heat-sensitive paper of the utility model.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is further set forth, wherein, the direction of the utility model is standard with Fig. 1.

As shown in Figure 1; The basic structure of the polychrome heat-sensitive paper of the utility model comprises three layers, and promptly the paper substrate 1 of the bottom, the middle heat of meeting chromogenic reaction take place and the heat-sensitive layer 2 of display trace (writing), and the transparent membrane protective layer 31 of separating protection; Heat-sensitive layer 2 is attached to the upper surface of basic unit 1; Thinfilm protective coating 31 covers heat-sensitive layer 2, contacts with extraneous to stop heat-sensitive layer 2, wherein; Heat-sensitive layer 2 comprises the sub-heat-sensitive layer 21 that several are superimposed; Separate through thinfilm protective coating 31 between each sub-heat-sensitive layer 21, each sub-heat-sensitive layer 21 comprises that the leuco dye layer 22 of each sub-heat-sensitive layer 21 is reacted with developer layer 23 respectively by clear films intermediate layer 32 separated leuco dye layer 22 and developer layer 23; At least can show two kinds of colors, the developer layer 23 of each sub-heat-sensitive layer 21, membrane middle layer 32 and leuco dye layer 22 can be to be superimposed successively from top to bottom.When heat-sensitive paper was heated, diverse location was because heating temperature is different, can produce chromogenic reaction and show the vestige of different colours so that the membrane middle layer of different sub heat-sensitive layer 21 32 is melted, and reminded and effect attractive in appearance to reach outstanding.

The process that the polychrome heat-sensitive paper of the utility model is printed or duplicated is: by the electric heating PULSE HEATING; Heating process is by low paramount; Heat at first penetrates into the first low sub-heat-sensitive layer 21 (superficial layer) of color development (generation chromogenic reaction) temperature requirement; The membrane middle layer 32 of this layer is melted, and produces chromogenic reaction, demonstrates first kind of color; Printhead moves to another print area, continues heating, and temperature continues to rise, and heat is penetrated into the second higher sub-heat-sensitive layer 21 of color development temperature requirement again, and the membrane middle layer 32 of this layer is melted, and produces chromogenic reaction, demonstrates another kind of color; And the like, promptly can reach the purpose that shows different colours.Certainly, if the temperature of printhead can not be gradual change also, such as; The polychrome heat-sensitive paper comprises seven sub-heat-sensitive layers 21, and from top to bottom, each sub-heat-sensitive layer 21 can show the purple seven kinds of colors of the yellowish green ultramarine of blood orange respectively; The thawing of the membrane middle layer 32 of the sub-heat-sensitive layer 21 at each color place needs a corresponding temperature range value; When the temperature of printhead was in this value range, chromogenic reactions took place in corresponding sub-heat-sensitive layer 21, demonstrate the writing of corresponding color.

The polychrome heat-sensitive paper of the utility model can be applied to welfare lottery ticket, sports lottery ticket, consumption ticket, bill, label, luggage belt drop and scientific instrument etc.

The above is merely preferred embodiments of the present invention; The present invention is not limited to above-mentioned embodiment; In implementation process, possibly there is local small structural modification; If various changes of the present invention or modification are not broken away from the spirit and scope of the present invention, and belong within claim of the present invention and the equivalent technologies scope, then the present invention also is intended to comprise these changes and modification.

Claims

1. polychrome heat-sensitive paper; It comprises paper substrate (1), heat-sensitive layer (2) and thinfilm protective coating (31), and said heat-sensitive layer (2) invests the upper surface of basic unit (1), and said thinfilm protective coating (31) covers heat-sensitive layer (2); It is characterized in that; Said heat-sensitive layer (2) comprises that several are superimposed, and can show versicolor sub-heat-sensitive layer (21) respectively, separates through thinfilm protective coating (31) between each sub-heat-sensitive layer (21).

2. polychrome heat-sensitive paper according to claim 1; It is characterized in that; Each said sub-heat-sensitive layer (21) comprises by separated leuco dye layer of membrane middle layer (32) (22) and developer layer (23); The leuco dye layer (22) of each sub-heat-sensitive layer (21) is reacted with developer layer (23) respectively, can show two kinds of colors at least.

3. polychrome heat-sensitive paper according to claim 2 is characterized in that, the developer layer (23) of each said sub-heat-sensitive layer (21), membrane middle layer (32) and leuco dye layer (22) are superimposed from top to bottom successively.