JP2009069779A - Study material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a study material wherein question elements are made visible so as to be readable and answer elements are concealed so as to be unreadable in the display of questions printed on a base sheet. <P>SOLUTION: A concealing film is printer over question elements, so that the question elements are made unreadable. The concealing film comprises ink of which the main agent is microcapsules containing a decolorizable temperature indicator which is colored at a normal temperature and is made transparent by being heated at a prescribed decolorization temperature corresponding to a base temperature of a fingertip of a human body. The base sheet is made of a material of higher heat storage than the concealing film and is provided with a temperature reception part to which a user's fingertip is to be pressed, by the material itself in a portion wherein the concealing film is formed, and the concealing film is heated to the decolorization temperature through a print surface by heating the material in the portion of the temperature reception part. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a learning material for a user such as a student to repeatedly learn exercise problems and the like.

  2. Description of the Related Art Conventionally, a learning material including a learning material sheet displaying exercises and the like and a learning sheet that can be separated from the surface of the learning material sheet is known (Patent Document 1).

  As shown in FIG. 5A, the teaching material sheet 1 is printed with a question display including a question element Q and an answer element A, the question element Q is printed in black, and the answer element A is printed in red. Yes. In the case of the illustrated example, an English problem display and a Japanese sentence corresponding to the English sentence are printed in black as a semantic display, and displayed in a paired manner.

  The learning sheet 2 is formed of a red translucent film, and enables repeated learning by being superimposed on the teaching material sheet 1. As shown in FIG. 5B, when the red translucent learning sheet 2 is superimposed on the teaching material sheet 1, the answer element A printed in red becomes unreadable. However, the black question element Q is legible because it can be seen through the red translucent learning sheet 2. Similarly, the black meaning display can be read through the learning sheet 2.

  That is, by reading the meaning display in the state where the learning sheet 2 is superimposed on the teaching material sheet 1, the self-answer is asked from the questionable element Q of the question display to the unreadable answer element A. To do. Therefore, if the learning sheet 2 is raised, the entire question display including the answer element A of the teaching material sheet 1 appears, so that the correctness of the self-answer can be checked.

  However, in the case of the prior art, since the learning sheet 2 is required separately from the learning material sheet 1, the user can easily lose the learning sheet 2. If the learning sheet 2 is lost, only the learning material sheet 1 can be used. , Can no longer learn.

  In this regard, the present inventor has found that an ink containing a decoloring type temperature indicating agent that is colored at room temperature but becomes transparent by heating is known, and if this is used in a teaching material sheet, I learned that the above problem can be solved. Such an ink contains microcapsules enclosing a temperature indicating agent that develops or decolors when temperature changes.

  The temperature indicating agent that develops or decolors by temperature change includes cholesteric liquid crystal, electron donating color developing compound, electron accepting compound, polar organic compound, etc., and by arbitrarily blending one or more kinds, A temperature indicating agent that develops or decolors at a predetermined temperature is obtained, and is contained in ink by microencapsulation (Patent Documents 2 to 4).

JP-A-11-202748 JP 2006-95795 A JP 2006-206622 A JP 2007-196424 A

  Incidentally, FIG. 1A shows a comparative example of the teaching material sheet 3 using the decolorizing type temperature indicating agent known by the present inventor, and the teaching material sheet 3 is visually recognized on the surface of the base material sheet 4. A question display 5 including possible question elements Q and answer elements A is printed, and a concealing film 6 made of a temperature indicating agent is printed on the answer elements A. In the case of the illustrated example, the meaning display 7 corresponding to the problem display 5 is printed so as to be visible from the surface of the base sheet 4 with the naked eye.

  The printing ink constituting the masking film 5 contains microcapsules containing a decolorizing type temperature indicating agent that is colored at room temperature but becomes transparent when heated to a predetermined temperature. It is possible to use those proposed in No. 4 or those which are expensive but are currently commercially available.

  The answer element A and the masking film 5 are represented by colors selected from similar hues other than the ground color of the base sheet 4. Accordingly, the answer element A is difficult to read or cannot be read at room temperature (generally referred to as “difficult to read”), and can be read only when the masking film 5 is decolored and transparentized by heating. For example, when the ground color of the base material sheet 4 is white, both the answer element A and the concealment film 5 may be expressed in black, and any color other than white can be read with the naked eye. The color may be

  As the temperature indicating agent, ones that are suitable for the purpose and function of the masking film 5 are selected and used from different temperature types in which the ranges of the coloring temperature and the decoloring temperature are set. In the case of the present invention, the temperature-indicating agent that forms the masking film 5 of the teaching material sheet 3 is colored at room temperature to room temperature (about 10 to 27 degrees Celsius). It is necessary to make it transparent by decoloring when it is warmed. Therefore, it is preferable that the decoloring temperature of the temperature indicating agent is about 27 to 40 degrees Celsius.

  Therefore, when the user performs learning using the teaching material sheet 3, the question element Q that can be read is displayed by reading the meaning display in a state where the answer element A is difficult to read by the masking film 5. Based on the above, the user asks himself what the unreadable answer element A is and answers himself. Thereafter, if the user rubs the masking film 5 with a fingertip, the masking film 5 heated by receiving the body temperature of the fingertip becomes transparent by decoloring, and the answer element A appears to be legible. You can check whether your answer is correct.

  However, according to the experiment of the present inventor, it was found that even if the surface of the masking film 5 is rubbed with a fingertip of a human body, it is extremely difficult to erase the entire masking film 5 in a short time. That is, when an experiment was performed at room temperature (about 24 degrees Celsius) on a sample in which the masking film 5 was formed on a paper base sheet 4 by screen printing at 100 mesh, the fingertip was strongly pressed against the surface of the masking film 5. In addition, it takes several tens of seconds for the masking film 5 to start decoloring, and as shown in FIG. It turned out that the cloudy part 6c of a big area was produced | generated between the part 6a and the surrounding colored part 6b, and the answer element A cannot fully be read. Therefore, as a learning material that must digest a predetermined number of problems in a predetermined time, it cannot be practically used.

  However, when the fingertip is pressed corresponding to the masking film 5 from the back side of the base material sheet 4 made of a predetermined material, the masking film 5 starts decoloring quickly in a few seconds, and FIG. As shown in the figure, it was found that the area of the central decoloring portion 6a was formed large, and the cloudy portion 6c as described above was hardly generated.

Therefore, when the above phenomenon is analyzed, the masking film 5 is formed of ink containing microcapsules encapsulating a temperature indicating agent. Therefore, the heat storage property is not good, and it takes time to warm up to a predetermined temperature. On the other hand, it naturally cools instantly. Therefore, even if the fingertip is pressed against the surface of the masking film 5, it takes a long time for the color to be erased because the ink itself takes heat from the surroundings, and the periphery of the pressed fingertip reaches the decoloring temperature. do not do.

  On the other hand, when the base sheet 4 is made of a material such as heat storage paper and the fingertip is pressed from the back side of the base sheet 4, the heat storage base sheet 4 covers a large area in a short time. As the temperature rises, the masking film 5 is heated from the printing surface and reaches the decoloring temperature in a short time, and the masking film 6 is heated over a wide area that receives the heating heat spreading from the fingertip to the base sheet 4. It is considered that a favorable result as shown in FIG. 1C was obtained as a result of maintaining the temperature state.

  The present invention, based on the above knowledge, is a teaching material sheet in which the masking film 6 is formed of ink mainly composed of microcapsules encapsulating a decolorizing temperature indicating agent, and provides a learning teaching material that can be used practically. is there.

  Therefore, the present invention is configured as a means in a teaching material sheet printed with a question display including a question element and an answer element visible to the naked eye from the surface side of the base material sheet. A concealing film formed by printing ink mainly composed of microcapsules containing a decolorizing type temperature indicating agent that becomes transparent by heating to a decoloring temperature of a predetermined temperature corresponding to the base temperature is used as the answering element. By laminating and displaying the answering element and the concealing film in a color selected from similar hues other than the base color of the base sheet, the concealing film is made transparent by the naked eye but is difficult to read at room temperature The base sheet is made of a material having higher heat storage than the concealment film, and the front surface and the back surface of the base sheet are formed with a concealment film. A temperature receiving portion that presses the user's fingertip at a position corresponding to the masking film on the surface opposite to the masking film, and the masking film is removed from the printing surface by heating the substrate sheet through the temperature receiving section. It exists in the point comprised so that it might heat to a decoloring temperature.

  The question element and the answer element are preferably displayed lighter than the question element by setting the density of the answer element to 60 to 40 when the density of the question element is 100 with respect to the print density.

  On the back side of the base sheet, it is preferable to print instruction information for displaying the position of the temperature receiving portion so as to be visible with the naked eye.

  According to the present invention, the teaching material sheet 3 on which the question display Q including the question element Q and the answer element A that can be visually recognized from the surface side of the base sheet 4 is printed is laminated on the answer element A and the concealment film 6. The masking film 6 is colored at room temperature, but contains a decoloring type temperature indicating agent that becomes transparent by heating to a decoloring temperature of a predetermined temperature corresponding to the basic temperature of the fingertip of the human body. Since the answer element A and the concealment film 6 are displayed in a color selected from similar colors other than the ground color of the base sheet 4, the user can use the concealment film 5. After reading the question display 5 including the answer element A, which is made difficult to read by the above, and asking yourself what the unreadable answer element A is from the readable question element Q, the self-answer is given, and the concealing film 6 is moved to a predetermined temperature with a fingertip. It is decolored by heating to a transparent cover By reading the answer elements A and perspective the film 6, it is possible to check the correctness of its own answer.

  At this time, even if the fingertip is directly pressed against the masking film 6, it takes a long time until the masking film 6 reaches the decoloring temperature, and the cloudy portion 6c is generated around the masking film 6 so that the answer element A is read. In contrast, according to the present invention, the base sheet 4 is made of a material having a higher heat storage property than the concealment film 6, and the concealment film 6 among the front and back surfaces of the base sheet 4 is not possible. Is provided on a surface opposite to the surface on which the heat sink is formed and corresponding to the concealment film, and is provided with a temperature receiving portion 8 for pressing the fingertip of the user by the material 4a of the base sheet 4. Since the masking film 6 is heated from the printing surface to the decoloring temperature by heating the base sheet 4 via the warming part 8, the masking film 6 can be decolorized in a short time. In addition, the masking film 6 is heated over a wide area that receives the heating heat spreading from the fingertip to the base material sheet 4. By maintaining the state, without generating around the cloudy portion 6c as described above, and rapidly readable answers element A, there is an effect that it is possible to perform efficiently learning.

  At this time, the ink mainly composed of a microcapsule encapsulating a decoloring type temperature-indicating agent for forming the masking film 6 is very expensive, but according to the present invention of claim 2, the question element Q and Concerning the printing density of the answer element A, when the density of the question element Q is 100, the answer element A is displayed lighter than the question element Q by setting the density of the answer element A to 60-40. Even if the film 6 is formed thin, it is possible to make the answer element A difficult to read, thereby suppressing the consumption of expensive ink for printing the concealment film 6 and providing learning materials at low cost. There is an advantage.

  And according to this invention of Claim 3, since the instruction information 9 which displays the position of the temperature receiving part 8 is printed on the base material sheet 4 so that it can be visually recognized with the naked eye, the user is not confused, There is an effect that learning can be preferably performed using the teaching material sheet 3.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

(Basic embodiment)
The teaching material sheet 3 of the present invention prints a question display 5 including a question element Q and an answer element A that can be visually recognized from the surface side of the base sheet 4, and is also visually visible from the surface side of the base sheet 4. A semantic display 7 corresponding to the problem display 5 is printed so as to be possible. The answering element A is printed with a concealing film 6 laminated thereon, and the concealing film 6 is colored at room temperature but transparent by heating to a decoloring temperature of a predetermined temperature corresponding to the basic temperature of the fingertip of the human body. It is formed of an ink mainly composed of microcapsules encapsulating a decolorizing type temperature indicating agent. The answer element A and the masking film 6 are displayed in colors selected from similar hues other than the ground color of the base sheet 4. Therefore, the answer element A is difficult to read with the naked eye as long as the masking film 6 is in a colored state, but can be read with the naked eye when the masking film 6 becomes transparent by decoloring. This is the same as the comparative example described based on FIG.

  Therefore, in the present invention, as shown in FIG. 1C, the base sheet 4 is made of a material 4 a having a higher heat storage property than the concealment film 6, and the concealment film 6 among the front and back surfaces of the base sheet 4. A temperature receiving portion 8 that presses the user's fingertip is provided at a position on the opposite side of the surface on which is formed and corresponding to the masking film 6. Therefore, when the user presses the fingertip against the temperature receiving portion 8, the temperature receiving portion 8 made of the heat storage material 4a is heated so as to approach the basal body temperature of the fingertip in a short time, and the heating is directed toward the surroundings. Spreads easily and maintains a warmed state.

  For this reason, the masking film 5 starts decoloring quickly in a few seconds, and the area of the central decoloring portion 6a is formed large so that the answer element A can be easily read. That is, the cloudy portion 6c that makes it difficult to interpret the answer element A as shown in FIG.

  The material 4a of the base sheet 4 is preferably a paper having a good heat storage property due to cellulose or the like. In this case, the front side and the back side of the base sheet 4 include a problem display 5, a concealment film 6, and a meaning display 7. Printing is performed. Therefore, in this case, the temperature receiver 8 is formed on the back surface of the base sheet 4.

  As shown in FIG. 2, it is preferable that the teaching material sheet 3 constitutes a booklet 10 in which a plurality of stacked sheets are joined by gluing at the upper edge or side edge, and each teaching sheet 3 has a temperature receiving portion on the back surface. The instruction information 9 for displaying the position 8 is printed so as to be visible with the naked eye. The instruction information 9 preferably displays a frame corresponding to the masking film 6 as shown in FIG. 2B, but may be a character such as a descriptive sentence or a figure such as an arrow.

  Accordingly, as shown in FIG. 2A, the user can read the meaning display 7 from the front side of the teaching material sheet 3 and can read and interpret the problem display 5 in which the answer element A is difficult to read by the concealment film 5. After asking himself / herself what is the unreadable answer element A from the question element Q, as shown in FIG. 2 (B), the teaching material sheet 3 is reversed and the temperature receiving unit 8 is instructed according to the instruction information 9 on the back side. If the fingertip is pressed and then the front side of the teaching material sheet 3 is viewed again, as shown in FIG. 2C, the concealment film 5 is decolored and transparent, so that the answer element A is read. It is sufficient to check whether the answer is correct.

  By the way, when the teaching material sheet 3 is formed by printing on a sheet or the like, the problem display 5 and the meaning display 7 can be offset printed, but the concealment film 6 needs to be formed in a solid coating shape. Screen printed. In this regard, an ink mainly composed of a microcapsule containing a decolorizing temperature indicating agent is considerably more expensive than a normal printing ink (currently commercially available, about 10 times the normal ink). We must devise so that we can achieve our purpose with a small amount.

  Therefore, according to the present invention, when the question display 5 is offset printed, the density of the answer element A is set to 60 to 40 when the density of the question element Q is 100 with respect to the print density of the question element Q and the answer element A. Thus, the answer element A is displayed lighter than the question element Q. Then, the concealment film 6 that is laminated and printed on the answering element A is screen-printed so that the ink consumption is as small as possible. For example, printing is performed only once on a 100 mesh screen. Thereby, even if the ink layer of the masking film 6 is thin enough to transmit light, the answer element A is displayed lightly, so that the masking film 6 can make the answer element A difficult to read. Incidentally, in order to give changes to the density of the question element Q and the answer element A, it is necessary to perform offset printing twice. However, when the ink cost of the masking film 6 is estimated, it is much cheaper. found.

(First embodiment)
FIG. 3 shows a first embodiment of the present invention, and the base sheet 4 is made of paper 4a having a good heat storage property by cellulose or the like, as shown in FIGS. 3 (A) and 3 (B). The problem display 5 and the meaning display 7 are printed on the surface F of the front side. At this time, the question display 5 is printed so that the answer element A is displayed lighter than the question element Q. Next, as shown in FIGS. 3C and 3D, the instruction information 9 is printed on the surface of the back side R corresponding to the answer element A. The instruction information 9 may be printed first, and then the problem display 5 and the meaning display 7 may be printed, and the printing order is not limited.

  As shown in FIGS. 3C and 3D, a concealing film 6 is printed on the surface of the front side F by being laminated on the answering element A. As described above, the masking film 6 is a microcapsule containing a decoloring type temperature indicating agent that is colored at room temperature but becomes transparent by heating to a decoloring temperature of a predetermined temperature corresponding to the basic temperature of the fingertip of the human body. The answering element A and the concealing film 6 are displayed in a color selected from similar hues other than the ground color of the base material sheet 4 so that the answering element A can be seen with the naked eye at room temperature. It is difficult to read.

  Accordingly, the temperature receiving portion 8 is formed by the material 4 a of the base sheet 4 located between the masking film 6 and the instruction information 9.

  Therefore, as shown in FIGS. 3E and 3F, when the user presses the fingertip from the back side R of the base sheet 4 to the heat receiving unit 8 according to the instruction information 9, the heat receiving unit 8 due to the heat storage property of the material 4 a. Is warmed to approach the basal body temperature of the fingertip in a short time, and the warming is spread toward the surroundings to maintain the warmed state. As a result, the masking film 5 quickly starts decoloring and makes the answer element A readable. When the fingertip is removed from the temperature receiving unit 8, the masking film 6 is naturally cooled to room temperature and becomes colored again, making the answer element A difficult to read.

(Second embodiment)
FIG. 4 shows a second embodiment of the present invention, and the base sheet 4 is made of a transparent synthetic resin film having a heat storage property as a material 4a, and as shown in FIGS. 4 (A) and 4 (B), A problem display 5 and a meaning display 7 are printed on the surface of the reverse side R. At this time, in the case of letters and numbers, the problem display 5 and the meaning display 7 are printed as characters and numbers that are mirror-symmetrical. Therefore, when viewed from the front side F by seeing through the transparent film material 4a, Can be read as letters and numbers. Note that the answer element A in the question display 5 is printed lighter than the question element Q in the same manner as described above.

  Therefore, as shown in FIGS. 4C and 4D, the masking film 6 is printed on the surface of the back side R by being laminated on the answering element A. As described above, the masking film 6 is a microcapsule containing a decoloring type temperature indicating agent that is colored at room temperature but becomes transparent by heating to a decoloring temperature of a predetermined temperature corresponding to the basic temperature of the fingertip of the human body. The answering element A and the masking film 6 are displayed in a color selected from similar hues to make the answering element A difficult to read with the naked eye at room temperature. That is, the concealment film 6 is visible from the front side F by seeing through the transparent film material 4a together with the answer element A.

  Therefore, the raw material 4a of the base sheet 4 corresponding to the portion where the answer element A and the concealing film 6 are printed forms the temperature receiving portion 8. In the case of this second embodiment, the user can see through the transparent film material 4a and see the concealment film 6, so that the concealment film 6 also serves as instruction information 9 for displaying the position of the temperature receiving portion 8.

  Therefore, as shown in FIGS. 4E and 4F, when the fingertip is pressed from the front side F of the base sheet 4 to the temperature receiving unit 8 using the concealment film 6 visually recognized by the user as a mark (instruction information 9), The heat receiving section 8 heats the temperature receiving portion 8 so as to approach the basal body temperature of the fingertip in a short time, and expands the heating toward the surroundings to maintain the warmed state. As a result, the masking film 5 quickly starts decoloring and makes the answer element A readable. When the fingertip is removed from the temperature receiving unit 8, the masking film 6 is naturally cooled to room temperature and becomes colored again, making the answer element A difficult to read.

1A and 1B show a basic configuration of the present invention, wherein FIG. 1A is a plan view of a comparative example, FIG. 1B is a plan view showing the operation of the comparative example, and FIG. 2C is a plan view showing the operation of the basic embodiment of the present invention. FIG. 1A and 1B show a basic embodiment of the present invention, in which FIG. 1A is a perspective view showing a learning state of a teaching material sheet, FIG. 1B is a perspective view showing a method for decolorizing a masking film, and FIG. It is a perspective view which shows the state which made the element readable. The 1st Example of this invention is shown, (A) is a top view which shows the base material sheet of the state which printed the problem display and the meaning display, (B) is sectional drawing which shows the base material sheet, (C) Is a plan view showing a base sheet in a state where a masking film is printed, (D) is a cross-sectional view showing the base sheet, (E) is a plan view showing a state in which the masking film is decolored, and (F) is It is sectional drawing which shows the base material sheet. The 2nd Example of this invention is shown, (A) is a top view which shows the base material sheet of the state which printed the problem display and the meaning display, (B) is sectional drawing which shows the base material sheet, (C) Is a plan view showing a base sheet in a state where a masking film is printed, (D) is a cross-sectional view showing the base sheet, (E) is a plan view showing a state in which the masking film is decolored, and (F) is It is sectional drawing which shows the base material sheet. The learning material which concerns on a prior art is shown, (A) is a top view of a learning material sheet, (B) is a top view of the state which accumulated the learning sheet on the learning material sheet.

Explanation of symbols

3 Teaching material sheet 4 Base material sheet 4a Material 5 Question display Q Question element A Answer element 6 Concealment film 7 Meaning display 8 Temperature receiver 9 Instruction information

Claims (3)

In the teaching material sheet on which the question display (5) including the question element (Q) and the answer element (A) visible from the front side of the base sheet (4) is printed,
Printing ink that is based on microcapsules containing a decolorizing temperature indicating agent that is colored at room temperature but becomes transparent by heating to a decoloring temperature corresponding to the basic temperature of the fingertip of the human body. The concealment film (6) formed by laminating the answer element (A), the answer element (A) and the concealment film (6) were selected from similar hues other than the base color of the base sheet (4) By displaying in color, the answer element (A) is difficult to read at room temperature by the naked eye, but it is made readable by making the concealment film (6) transparent,
The base sheet (4) is made of a material having a higher heat storage property than the masking film (6), and the front and back surfaces of the base sheet (4) are opposite to the surface on which the masking film (6) is formed. A temperature receiving part (8) for pressing the user's fingertip at a position corresponding to the concealment film on the side surface, and heating the base sheet (4) via the temperature receiving part (8) A learning material characterized in that the masking film (6) is heated from the printing surface to the decoloring temperature by the above.   Regarding the printing density of the question element (Q) and the answer element (A), when the density of the question element (Q) is 100, the density of the answer element (A) is set to 60 to 40, so that the answer element (A) The learning material according to claim 1, wherein the learning material is displayed lighter than the question element (Q).   The learning material according to claim 1 or 2, wherein instruction information (9) for displaying the position of the temperature receiving portion (8) is printed on the base sheet (4) so as to be visible with the naked eye.

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