JPH1170741A - Recording sheet for pressure-sensitive thermal process - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording sheet for a pressure-sensitive heat-sensitive process capable of performing high-quality recording provided with a capsule used in a pressure-sensitive heat-sensitive process, that is, a process for easily performing full-color printing by controlling pressure and heating. provide. SOLUTION: A developer 21 is provided on a base material 21 of a sheet 20.
Of microcapsules 2 in contact with the developer 28
4, 25, 26 layers are formed. Micro capsule 2
4, 25, 26 are formed of transparent shape memory resins having different glass transition temperatures and have different film thicknesses, and are formed in different thicknesses from each other. 25b and 26b. This allows microcapsules 24, 25,
26 is heated at a temperature equal to or higher than the glass transition temperature and is destroyed and colored by being pressed at a predetermined pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording sheet for a pressure-sensitive heat-sensitive process used in, for example, a high-resolution printer for recording by a pressure-sensitive heat-sensitive process, that is, pressurization and heating.

[0002]

2. Description of the Related Art Conventionally, as an ink used in a high-resolution printer, there is known an ink in which a thermosensitive coloring agent is sealed in a fine capsule such as a microcapsule. The microcapsules are formed in layers on a base material such as a recording sheet and have a transparent capsule wall film. The microcapsules corresponding to a plurality of colors develop colors when heated at a predetermined temperature different for each color. Therefore, by heating a predetermined microcapsule at a specific temperature, only the predetermined microcapsule develops a color, and the entire microcapsule develops a color. The color forming agent of each color is fixed by irradiating light of a different wavelength for each color. Therefore, by irradiating the entire surface of the sheet with light having a specific wavelength, only the coloring agent that has developed color is fixed, and the base material of the sheet is colored. That is, in the microcapsules of a plurality of colors, by selectively heating and irradiating light, the coloring of the coloring agent is controlled. In other words, by controlling the temperature and the light, a full-color image is recorded on the sheet.

[0003]

In the process of recording using a sheet provided with a capsule as described above, it is necessary to repeat heating and light irradiation for a plurality of colors in order to form a plurality of color forming agents. . Therefore, the recording process using this sheet is complicated.

[0004] The present invention provides a recording sheet for a pressure-sensitive heat-sensitive process capable of high-quality recording provided with a capsule used in a pressure-sensitive heat-sensitive process, that is, a process for easily performing full-color printing by controlling pressure and heating. The purpose is to:

[0005]

A recording sheet for a pressure-sensitive and heat-sensitive process according to the present invention is filled with a substrate and a coloring agent of a type corresponding to the surface condition of the substrate, and is heated at a predetermined temperature or higher. And a fine capsule formed in a layer on the base material, which is constituted by a capsule wall film broken by being pressed at a predetermined pressure or more.

[0006] Preferably, the capsule wall membrane is transparent,
It is transparent when the color former is encapsulated in the capsule. Preferably, the color former forms a color by causing a chemical reaction with another substance adjacent to the capsule. In this case, a plurality of coloring agents may form a color by causing a chemical reaction with one other substance. In particular, the color former may be a leuco base dye.
Another substance may be a developer. Preferably, the substrate is transparent.

Preferably, the substrate is made of a material having a rough surface,
At a predetermined temperature, the viscosity of the color former is smaller than a predetermined value. Alternatively, it is preferable that the base material is made of a material having a smooth surface, and the viscosity of the color former is larger than a predetermined value. In these cases, the color former may be an aqueous or oily liquid material at room temperature. Alternatively, the color former may be a hot-melt material that is solid at normal temperature. Alternatively, the color former may be a gel material at room temperature.

Preferably, the capsule wall film is formed of a shape memory resin. More preferably, the predetermined temperature is the glass transition temperature of the shape memory resin. Alternatively, the capsule wall film may be formed with a predetermined thickness.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view of a high-resolution color printer using a recording sheet for a pressure-sensitive heat-sensitive process according to the first embodiment. The color printer 10 includes a thermal head 30, platen rollers 41, 42, 43, and spring units 51, 52, 53.

The color printer 10 is a line printer, and performs recording for each line extending in a direction perpendicular to the paper surface. The color printer 10 is covered by a rectangular parallelepiped housing 11 that is long in a line direction (a direction orthogonal to the paper surface). An opening 12 for inserting a sheet 20 which is a recording sheet having microcapsules is opened on the upper surface of the housing 11, and an outlet 13 for discharging the sheet 20 is opened on a side surface of the housing 11. I have. The sheet 20 is transported along a transport path (dashed line) connecting the insertion port 12 and the discharge port 13.

The thermal head 30 is provided inside the housing 11 below the transport path. The thermal head 30 includes heating elements 31, 32, and 33 arranged on a straight line parallel to the line direction. Platen roller 4
1, 42, and 43 are heating elements 31, 3 on the upper side of the transport path.
It is provided at a position corresponding to 2, 33. The platen rollers 41, 42, and 43 are cylindrical rubber rollers, and are installed so that the central axis is parallel to the arrangement of the heating elements 31, 32, and 33.

The arrangement of the heating elements 31, 32, and 33 and the platen rollers 41, 42, and 43 are provided, for example, three each corresponding to cyan, magenta, and yellow. The number of arrangements of the heating elements and the number of platen rollers may be more or less depending on the number of colors of ink used.

Each of the heating elements 31, 32, and 33 selects and heats a portion on one line of the sheet 20 at different heating temperatures T1, T2, and T3.

The platen rollers 41, 42, 43 are urged by spring units 51, 52, 53 with different urging forces P1, P2, P3, respectively. Thus, the sheet 20 is pressed at the respective pressures P1, P2, P3.
Each of the platen rollers 41, 42, and 43 is connected to a drive motor (not shown), and is driven at a predetermined speed by driving the drive motor.

The sheet 20 is inserted from the insertion opening 12 and
The respective heating temperatures T1, T by the heating elements 31, 32, 33, respectively.
At 2, T3, the portion on one line is selectively heated, and the heating elements 31, 32, 33 and the platen roller 41,
The pressing force is uniformly applied between each of the urging forces P1, P2, and P3 between the pressing members 42 and 43. By the heating and pressurizing, the portion selectively heated on the sheet 20 is recorded as an image. As the platen rollers 41, 42, and 43 rotate, the sheet 20 is conveyed along the conveyance path at a predetermined speed, and is discharged from the discharge port 13.

When the sheet 20 is conveyed as described above, in order to enhance the controllability of the temperature, the heating elements 31, 32, 33 are changed so that the temperature of the sheet 20 changes from a low temperature to a high temperature.
Of the heat generation temperatures T1, T2, T3 of T2 are higher than T1,
In addition, T3 is set to be higher than T2. In addition, the urging forces P1, P2, and P3 are increased by P2 from P1.
Is set to be smaller and P3 is smaller than P2.

The heating elements 31, 32, 33 and the driving motors (not shown) for the platen rollers 41, 42, 43
The heating element 3 is connected to a control circuit provided on the substrate 62.
1, 32, 33 and platen rollers 41, 42, 4
3 is controlled. A battery 63 is provided on the side opposite to the transport path of the color printer 10, and supplies a voltage to a control circuit and the like.

FIG. 2 is a side view of the platen roller 44 and the heating elements 31, 32, 33 when only one platen roller is used in the line printer. Instead of the three platen rollers 41, 42, 43 described above, only one large-diameter cylindrical platen roller 44 is provided. The center axis of the platen roller 44 is orthogonal to the paper surface. On the upper surface of the thermal head 30, the heating elements 31, 32, and 33 are arranged on a straight line parallel to a direction orthogonal to the paper surface. The heating elements 31, 32, and 33 are provided close to each other in the transport direction (the direction of arrow E), and the heating element 31 is arranged at a position closest to the center axis of the platen roller 44, and is farthest from this center axis. The heating element 33 is arranged at the position. Due to the difference in the amount of deformation of the platen roller 44, the sheet 20 is most strongly pressed at the position of the heating element 31 and at the position of the heating element 33,
Sheet 20 is pressed lightest. The relationship between the temperature and the pressure is the same as that of the line printer shown in FIG.

FIG. 3 is a diagram showing a heating element and a flat platen when the color printer is a serial printer. This serial printer includes a transport roller 71, a flat platen 45, and a movable head 64.

The conveying roller 71 has a center axis of the sheet 20.
Are arranged on both sides of the plane platen 45 so as to be parallel to the width direction (arrow B direction), and are rotated in one direction by driving a drive motor (not shown). As a result, the sheet 20 is intermittently conveyed in the conveying direction (arrow A direction), and the movable head 64 is driven in a direction orthogonal to the arrow A direction (arrow B direction).

The flat platen 45 is a rectangular parallelepiped platen serving as a fixed base for pressing the sheet 20, and is disposed below the sheet 20 conveyance path. A movable head 64 is provided above the transport path, and the movable head 64 is driven above the plane platen 45 in the direction of arrow B.

The thermal heads 34, 35, 36 are provided inside the movable head 64, and the thermal heads 34, 35, 36 are arranged in parallel with each other. Heating elements 3 are provided below the thermal heads 34, 35 and 36, respectively.
7, 38, and 39 are arranged on a straight line parallel to the transport direction (the direction of arrow A).

Each of the thermal heads 34, 35, 36 has a different biasing force P by a spring unit (not shown).
1, P2, P3, each heating element 37, 38, 39
Generates heat at different heating temperatures T1, T2, and T3.

In this serial printer, the sheet 20 is intermittently conveyed in the direction of arrow A, and the drive head 64 is driven in the direction of arrow B. The sheet 20 is a heating element 3
A predetermined portion is selectively heated at a predetermined temperature by 7, 38, and 39, and further, thermal heads 34, 35, and 36 are heated.
And a flat platen 45 at a predetermined pressure.

In this serial printer, the driving head 6
Since the image recording is performed on the sheet 20 only when the sheet No. 4 moves in the direction of the arrow B, the heat generation temperatures T1, T2, and T3 are T1 <T
2 <T3, and the biasing forces P1, P2, P3 are P1>
P2> P3 is set.

It should be noted that it is possible to adopt a configuration in which an image is recorded even when the image is moved in the direction opposite to the arrow B direction.
In this case, when the moving direction of the drive head 64 is switched, the direction of the movable head 64 is changed, and the heating elements 37, 38, and 39 are so arranged that the heating element 37 always comes to the head of the moving direction.
Is arranged. Alternatively, the settings of the urging forces P1 and P3 for the heating elements 37 and 39 are interchanged, and the heating temperatures T1 and T3 are changed.
The setting of 3 may be replaced.

FIG. 4 is a diagram showing a platen roller and a driving head when a platen roller is used in a serial printer. FIG. 5 is a side view of the platen roller and the drive head of FIG.

In place of the flat platen 45 of the serial printer shown in FIG. 3, a cylindrical platen roller 46 is provided. By rotating the platen roller 46, the sheet 20 is conveyed in the direction of arrow C. The movable head 64 is driven in the direction of arrow D.

The movable head 64 includes a thermal head 8
1, 82 and 83 are arranged in parallel in the conveying direction of the sheet 20 (direction of arrow C) and are provided close to each other. Heating elements 84, 85, 86 are provided below the thermal heads 81, 82, 83.
4, 85, and 86 are the width directions of the sheet 20 (arrow D directions).
Are arranged on a straight line parallel to. Each heating element 84, 85, 8
6, the sheet 20 is heated at the exothermic temperatures T3, T2, T1.

The sheet 20 includes thermal heads 81, 8
2, 83 and the platen roller 46 pressurize. The thermal head 83 is located closest to the center axis of the platen roller 46, and the thermal head 81 is located farthest from this center axis. As a result, the sheet 20 is pressed most strongly by the thermal head 83 and weakest by the thermal head 81.

In this serial printer, even when the movable head 64 moves in the direction opposite to the arrow D, an image can be recorded on the sheet 20 without changing the direction of the movable head 64. Further, with the movement of the movable head 64, the same selected portion can be heated a plurality of times, thereby improving the color developing property (fixing property of a color forming agent included in the sheet 20 described later) and increasing the maximum number of the heating elements. Near dot gradation can be obtained.

Next, a sheet 20 which is a recording sheet used in the above-described high-resolution color printer will be described with reference to FIG. FIG. 6 is an example of a cross-sectional view of the sheet 20. The sheet 20 includes a base material 21, a capsule layer 22, and a protective film 23.

The capsule layer 22 is a layer of microcapsules 24, 25 and 26 having a particle size of 5 to 10 μm.
1 is formed. Microcapsules 24, 25, 26
Is composed of fine capsule wall films 24a, 25a, 26a and coloring agents 24b, 25b, 26b encapsulated as cores in these capsule wall films 24a, 25a, 26a.
The color formers 24b, 25b, and 26b are inks that produce cyan, magenta, and yellow, for example. The capsule wall films 24a, 25a, and 26a are formed of a shape memory resin, and the outer surface is dyed in the same color (for example, white) as the base material 21. The capsule layer 22 is covered with a transparent protective film 23. In FIG. 6, the capsule layer 22 is shown as a single layer of the microcapsules 24, 25, and 26, but may be a multilayer.

Referring to FIG. 7, capsule wall films 24a, 25
The shape memory resin forming the a and 26a will be described.
Shape memory resins include, for example, polynorbornene, trans-
It is made of 1,4-polyisoprene, polyurethane, or the like, and generally has characteristics of temperature and elastic coefficient shown in FIG. In a region b higher than the glass transition temperature Tg, which is a temperature unique to the resin, micro-Brownian motion of molecular chains becomes active and rubber elasticity becomes strong. On the other hand, in the region a below the glass transition temperature Tg, the micro Brownian motion freezes and the rubber elasticity becomes weak. That is, the shape memory resin becomes rubbery when heated to a temperature higher than the glass transition temperature Tg, and is easily broken. When cooled to a temperature equal to or lower than the glass transition temperature Tg, the shape memory resin solidifies and hardly breaks.

By utilizing the glass transition temperature characteristics, the capsule wall films 24a, 25a and 26a are selectively destroyed. 8 and 9, capsule wall membranes 24a, 25
The destruction of a and 26a will be described.

The capsule wall films 24a, 25a, 26a
Each having a different glass transition temperature T1, T2, T3 (however,
T1 <T2 <T3, for example, 70 ° C., 110 ° C., 1
Set to 30 ° C. ) Is formed of a shape memory resin. That is, each capsule wall film 24a, 25a, 2
6a is easily broken only when heated above the glass transition temperature of each.

As shown in the cross section in FIG. 9, the capsule wall films 24a, 25a and 26a have different thicknesses d4, d5,
d6 (where d4>d5> d6).
This makes it difficult for the capsule wall film 24a having a relatively low glass transition temperature T1 to be broken, and the capsule wall film 26a having a relatively high glass transition temperature T3 is easily broken. That is, a relatively large pressure is required to break the capsule wall film 24a, and to break the capsule wall film 26a,
It suffices if there is a relatively small pressure.

The above temperature and force required for breaking (breaking pressure)
The microcapsules 24, 25, and 26 that emit different colors are selectively destroyed.
That is, when the temperature at which the capsule wall films 24a, 25a, 26a are heated is T1 or more and T2 or less, and the destruction pressure applied to the capsule wall films 24a, 25a, 26a is P1 or more (region c), Only the wall film 24a is destroyed. When the temperature is T2 or more and T3 or less and the breaking pressure is P2 or more and P1 or less (region d), only the capsule wall film 25a is broken. The temperature is T3 or higher,
When the breaking pressure is P3 or more and P2 or less (region e), only the capsule wall film 26a is broken.

Referring to FIG. 10, microcapsule 2
4, 25 and 26 will be described. FIG. 10 shows the sheet 20 showing the state in which the microcapsules 24 are broken.
FIG.

For example, the sheet 20 is heated at the temperature T1,
When pressurized by the breaking pressure, that is, the urging force P1, only the capsule wall film 24a of the microcapsule 24 is broken, and only the encapsulated coloring agent 24b is released. This color former 2
4b is a type having a melting point lower than the glass transition temperature T1 of the capsule wall film 24a. Therefore, the released coloring agent 24b is a liquid, and the coloring agent 24b forms a color and is fixed to the base 21. The broken capsule wall film 24a remains as it is on the substrate 21. Protective film 23
Accordingly, the color former 24b is prevented from discoloring and from adhering to the heating element of the thermal head of the printer.

As described above, the microcapsules 24, 2
Reference numerals 5 and 26 denote heating elements (for example, 31, 32, and 3 shown in FIG. 1).
3), the heating elements are heated at the heating temperatures T1, T2, T3, and the heating element and a platen roller (for example, 41, 42, 4 shown in FIG. 1).
3) Pressing is performed by the urging forces P1, P2, and P3. This destroys only the selected color, ie, the selected microcapsules 24, 25, 26. The coloring agents 24b, 25 in the microcapsules 24, 25, 26
Only b and 26b are released and color is formed on the base material 21 of the sheet 20. That is, an image is recorded on the sheet 20.

Referring to FIGS. 6 and 11, the transparent microcapsules 24, 25 and 26 will be described.

Transparent microcapsules 24, 25, 26
Leuco dyes are used as color formers to provide This leuco dye is transparent in a normal state, and develops color by reacting with a developer which is an oxidation product.
FIG. 11 shows an example of a sectional view of the sheet 20 using the leuco dye.

On the base material 21 of the sheet 20, a layer of one type of color developer 28 is formed. The capsule layer 22 is formed so as to be in contact with the developer 28, and the capsule layer 22 is covered with the protective film 23. The three types of microcapsules 24, 25, and 26 are capsule wall films 24a, 25a, and 2
6a and coloring agents 24b, 25b, 2 of different colors sealed in the capsule wall films 24a, 25a, 26a.
6b. Three types of color formers 24b, 25b, 26
b is a transparent leuco dye, and these capsule wall films 2
4a, 25a and 26a are formed of a transparent shape memory resin. The capsule wall films 24a, 25a, and 26a are selectively destroyed in the above-described relationship between the temperature and the pressure, and the color formers 24b,
When 25b and 26b are released, the color developer 28 and the released color formers 24b, 25b and 26b react with each other to develop color and fix on the substrate 21. In this way, a full-color image is recorded on the sheet 20.

If the capsule wall films 24a, 25a and 26a are white, the white capsule wall film remains even after the image is recorded, and the image becomes cloudy and the chroma is deteriorated. Therefore, in the present embodiment, the transparent capsule wall film 24a,
25a, 26a and transparent color formers 24b, 25b, 26b
By using the above, clouding of the image can be prevented. Further, the base material 21 is transparent such as an OHP film,
When the medium is display-controlled by transmitted light, microcapsules having a white wall film cannot be used, but microcapsules having a transparent wall film are effective.

The types of the color formers 24b, 25b and 26b having a viscosity corresponding to the surface condition of the substrate 21 will be described. The coloring agents 24b, 25b, and 26b described here are colored, and the capsule wall films 24a, 25a, and 26 used are used.
a has the same color (for example, white) as the substrate 21. Therefore, the color-forming agents 24b, 25b, 26b are colored by being released from the capsule wall films 24a, 25a, 26a. The capsule wall films 24a, 25a, 26a
Is colored after the formation of the microcapsules.

The color formers 24b, 25b and 26b can be used in any state such as liquid, solid or gel at room temperature. However, in particular, when a solid hot-melt ink is used as the coloring agent 24b, 25b, 26b, each coloring agent 24b is used.
b, 25b, 26b are capsule wall films 24a, 25a, 2
6a has a melting point lower than each glass transition temperature T1, T2, T3. Therefore, when the microcapsules 24, 25, 26 are heated at the respective glass transition temperatures T1, T2, T3,
Each of the color formers 24b, 25b, 26b changes to a liquid and is fixed to the base 21.

When the surface of the substrate 21 is in a rough state such as plain paper, for example, the color formers 24b, 25b, 26
The viscosity of b is, for example, 10 cP at a predetermined temperature at which the capsule wall films 24a, 25a, 26a are each broken, and is relatively small. For this reason, the coloring agents 24b, 25
b and 26b can enter the unevenness on the surface of the substrate 21 and are fixed on the substrate 21 without unevenness.

When the surface of the base material 21 is in a smooth state such as a coated paper, the viscosity of the color formers 24b, 25b, 26b used depends on the capsule wall film 24.
At a predetermined temperature at which a, 25a, and 26a are each destroyed, for example, 1000 cP, which is relatively large. For this reason, the color formers 24b, 25b, 26b are fixed on the smooth surface of the substrate 21 without bleeding.

When the surface of the base material 21 is in an intermediate roughness state other than the above, such as high quality paper, the color former 2
The viscosities of 4b, 25b, 26b are determined by the capsule wall film 24a,
At a predetermined temperature at which each of 25a and 26a is destroyed,
For example, it is 100 cP, and is stably fixed on the surface of the substrate 21 having an intermediate roughness without bleeding or unevenness.

Here, a coloring agent 24b corresponding to each surface condition,
The above-mentioned leuco dye may be used as 25b and 26b, and the color may be developed by reacting with a developer.

According to the above-described first embodiment, by changing the pressure and the temperature, the microcapsules 24, 25 and 26 corresponding to different colors can be easily selected, and a high-resolution color image can be obtained. Recorded on sheet 20.
At a predetermined temperature at which each of the capsule wall films 24a, 25a, and 26a is destroyed, a coloring agent 24b having a predetermined viscosity is provided.
25b and 26b are encapsulated in the capsule wall films 24a, 25a and 26a according to the surface condition of the substrate 21. Therefore, the color formers 24b, 25b, and 26b are stably fixed to the base material 21, and the deterioration of the chroma due to uneven color or blur in the recorded image is prevented.

[0053]

As described above, according to the present invention, a pressure-sensitive thermosensitive process capable of performing high-quality recording with a capsule used in a full-color recording process easily by controlling pressure and heating. A recording sheet for a thermal process is provided.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a high-resolution color printer using a recording sheet for a pressure-sensitive heat-sensitive process according to first and second embodiments of the present invention.

FIG. 2 is a side view of a platen roller and a heating element when only one platen roller is used in the line printer.

FIG. 3 is a diagram of a driving head and a flat platen when the color printer is a serial printer.

FIG. 4 is a diagram illustrating a platen roller and a driving head when a platen roller is used in a serial printer.

FIG. 5 is a side view of a platen roller and a driving head in the serial printer.

FIG. 6 is an example of a cross-sectional view of a sheet that is a recording sheet.

FIG. 7 is a diagram showing the relationship between the temperature and elastic modulus of a shape memory resin.

FIG. 8 is a diagram showing a relationship between capsule temperature and burst pressure.

FIG. 9 is a sectional view of a microcapsule.

FIG. 10 is a schematic diagram of color development of microcapsules.

FIG. 11 is an example of a cross-sectional view of a sheet as a recording sheet.

[Explanation of symbols]

Reference Signs List 20 sheet (recording sheet for pressure-sensitive and heat-sensitive process) 24a, 25a, 26a Capsule wall film 24b, 25b, 26b Color former 24, 25, 26 Microcapsule (fine capsule) 21 Base material

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] November 20, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

[0005]

Means for Solving the Problems] recording sheet for thermal pressure sensitive thermal process according to the present invention, capsule and the substrate, the color former wall membrane
It is composed by being enclosed in
And pressurized above a predetermined pressure.
Numerous microphones layered on a substrate
And a color former according to the surface condition of the base material.
It is characterized by being a kind .

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

[0006] Preferably, the capsule wall film is at a predetermined temperature or lower.
And heated above a certain pressure
Destroyed by More preferably, the capsule wall film is transparent, and the color former is transparent in a state of being encapsulated in the capsule wall film . Preferably color caused other substances and chemical reactions that color former is close to the micro mosquito <br/> capsule. In this case, a plurality of coloring agents may form a color by causing a chemical reaction with one other substance. In particular, the color former may be a leuco base dye. Another substance may be a developer. Preferably, the substrate is transparent.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0042

[Correction method] Change

[Correction contents]

Referring to FIG . 11 , the transparent microcapsules 24, 25 and 26 will be described.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0046

[Correction method] Change

[Correction contents]

Referring to FIG . 6 , the types of color formers 24b, 25b and 26b having a viscosity corresponding to the surface condition of substrate 21 will be described. Coloring agents 24b and 25 described here
b and 26b are colored and the capsule wall film 24 used
a, 25a, and 26a have the same color (for example, white) as the base material 21. Therefore, the coloring agents 24b, 25b, 26
b is colored by being released from the capsule wall films 24a, 25a, 26a. The capsule wall film 24
The colors a, 25a and 26a are colored after the formation of the microcapsules.

Continued on the front page (51) Int.Cl. ⁶ Identification code FI B41M 5/26 B41M 5/18 H 5/30 103

Claims (15)

[Claims] 1. A base material, and a coloring agent of a type corresponding to a surface state of the base material is enclosed therein.
Heated at a predetermined temperature or higher, comprising a capsule wall film broken by being pressed at a predetermined pressure or higher, comprising a fine capsule formed in a layer on the substrate. Characteristic recording sheet for pressure-sensitive and heat-sensitive processes. 2. The recording sheet for a pressure-sensitive heat-sensitive process according to claim 1, wherein the capsule wall film is transparent, and the color former is transparent in a state of being encapsulated in the capsule. 3. The recording sheet for a pressure-sensitive heat-sensitive process according to claim 2, wherein the color former causes a chemical reaction with another substance adjacent to the capsule to form a color. 4. The recording sheet for a pressure-sensitive heat-sensitive process according to claim 3, wherein a plurality of types of the color formers form a color by causing a chemical reaction with one of the other substances. 5. The recording sheet for a pressure-sensitive heat-sensitive process according to claim 3, wherein the color former is a leuco base dye. 6. The recording sheet according to claim 3, wherein the other substance is a color developer. 7. The recording sheet according to claim 4, wherein the base material is transparent. 8. The recording sheet for a pressure-sensitive heat-sensitive process according to claim 1, wherein the base material is a material having a rough surface, and the viscosity of the color former at the predetermined temperature is smaller than a predetermined value. . 9. The recording sheet for a pressure-sensitive heat-sensitive process according to claim 1, wherein the base material is a material having a smooth surface, and the viscosity of the color former is larger than a predetermined value. 10. The recording sheet for a pressure-sensitive heat-sensitive process according to claim 8, wherein the coloring agent is an aqueous or oily liquid material at normal temperature. 11. The recording sheet for a pressure-sensitive heat-sensitive process according to claim 8, wherein the color former is a hot-melt material that is solid at room temperature. 12. The recording sheet for a pressure-sensitive and heat-sensitive process according to claim 8, wherein the color former is a gel material at normal temperature. 13. The recording sheet according to claim 1, wherein the capsule wall film is formed of a shape memory resin. 14. The recording sheet according to claim 13, wherein the predetermined temperature is a glass transition temperature of the shape memory resin. 15. The recording sheet according to claim 1, wherein the capsule wall film is formed with a predetermined thickness.