JPH028088A - Thermal transfer method and its apparatus - Google Patents

Abstract

PURPOSE:To obtain excellent shelf life and besides, to enable an ink image of a copy to be conscientiously transferred by a method wherein an uneven forming surface of a resin sheet is opposed to an ink image forming surface of a copy to be fast stuck to each other, and at least an upper layer part of an ink image is transferred to the resin sheet by irradiation of light from the resin sheet side. CONSTITUTION:A sheet for original plate 15 is prepared by forming fine unevenness 15b on one surface 15a of a transparent resin sheet, and has light transmitting property irrespective of before and after working of formation of an uneven surface. This sheet for original plate 15 is installed under a transparent glass 13 and is brought into direct contact with a copy 21. The copy 21 is prepared by forming an ink image 21d on a resin sheet 21a. When light from a discharge lamp is irradiated on the copy 21, since the copy 21 is fast stuck to the bottom surface of the sheet for original plate 15, an upper layer part of the ink image 21d on a surface of the copy 21 is transferred to the bottom surface of the sheet for original sheet 15 upside as an image 22a. At that time the ink image is in a form like gouging into the unevenness transferred to be capable of obtaining an anchoring effect, the ink image is good in maintainability and excellent in fidelity.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a thermal transfer method and apparatus.

[Prior Art] Conventionally, a thermal transfer method has been known in which a heat-sensitive sheet is brought into close contact with the ink image forming surface of a document and thermal energy such as light is applied to the color-forming layer of the heat-sensitive sheet to develop a color corresponding to the ink image of the document. There is.

[The invention attempts to solve the problem.] i! lI Problem J This method is
Since it uses a heat-sensitive coloring layer, if it is stored for a long time, external light will accumulate and color the entire coloring layer, which has the disadvantage of poor storage stability.

In addition, with this method, if there are thick and thin lines in the ink image of the original, the heat energy absorbed by the thick lines is greater, so the coloring layer corresponding to the thick lines is The problem was that the fidelity was poor because the colors were even developed.

SUMMARY OF THE INVENTION An object of the present invention is to provide a thermal transfer method and apparatus that have excellent storage stability and can faithfully transfer an ink image on a document.

[Means for Solving the Problems] The thermal transfer method of the present invention combines a light-transmitting resin sheet with fine irregularities formed on one surface and an original on which an ink image is formed, between the irregularity-formed surface of the resin sheet and the The original is placed in close contact with the ink image forming surface of the original, and is irradiated with light from the resin sheet side to transfer at least the upper layer of the ink image onto the resin sheet.

In this case, it is preferable that the a manuscript has thin paper and a resin film, and the ink image is formed on the resin film.

Further, the thermal transfer device of the present invention includes a case body having a light source chamber and a power source chamber, a light source lamp disposed in the light source chamber, a light reflecting plate disposed on the back side of the light source lamp, and the light reflecting plate. A transparent member provided facing the board,
A power supply device that is housed in the power supply room and flashes the light source lamp; and a holding member that holds a resin film having fine irregularities formed on one surface on the transparent member with the irregularity-formed surface facing outward. The uneven surface of the resin film is brought into close contact with the ink image forming surface of the document, and the light source lamp is flashed to transfer at least the upper layer of the ink image onto the resin sheet.

[Function] According to the thermal transfer method of the present invention, the thermal energy of the light rays irradiated from the translucent resin sheet side is absorbed by the ink image of the document, and the ink image is melted and adhered to the ink image. Since the temperature of the resin sheet is increased in the area where the ink image is applied, only the upper layer side or almost the entire ink image is transferred to the resin sheet. In this case, since the resin sheet has fine irregularities formed in advance, the ink image is transferred in such a way that it bites into the irregularities, resulting in a so-called anchor effect. Therefore, since thermal transfer is performed without using any elements that change over time, such as a coloring agent, it has good maintainability and excellent fidelity.

In this case, if a thin paper and a resin film are used as the original to form the ink image, and the ink image is formed on the resin film, the ink image of carbon, etc. Because it is clearly transferred, it is convenient to transfer it to a resin film.The reason why the adhesion of the ink image improves when a thin paper is placed on the resin film (this is especially noticeable in the case of a thermal printer) is clear. However, it is presumed that the thermal energy of the ink image is released smoothly, thereby maintaining the ink image at an appropriate temperature for a sufficient period of time for the ink image to be transferred. However, this explanation regarding the effect of transcription is for reference only, and is not intended to exclude transcription due to other effects.

Further, in the thermal transfer device of the present invention, a transparent resin film on which fine irregularities are formed is held on a transparent member, and a light source is turned on while the irregularity-formed surface of the resin film is in close contact with the ink image forming surface of the document. Since it emits a flash of light, the above-described thermal transfer method can be carried out efficiently.

[Example] Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 10.

1 to 5 show a thermal transfer device 21.
1 has a configuration in which a holder 3 is removably attached to the lower part of the device main body 2 as shown in FIG. 2.The device main body 2 has a three-stage structure as shown in FIGS. The upper case 2a, which is box-shaped and forms two stages on the upper side (the lower side in FIG. 2), and the lower case 2b, which forms the step on the lower side (the upper side in FIG. 2), are connected by screws (not shown). are fastened together, and the holder 3 is attached so as to cover the lower case 2b. The upper case 2a has a thin hollow box shape, and as shown in FIG. 1, operating levers 4, 4 are provided on both sides of the middle step, and an AC adapter connection portion 5 is provided on the front side. ing. The upper part of the upper case 2a has a box shape that is slightly smaller on both sides than the middle part, and as shown in FIG. , there is a battery storage chamber 6 inside this
A charging switch Sa, a discharging switch Sb, and a light emitting diode 7 are provided on the top surface.

The lower case 2b has a box shape that is smaller in circumference than the intermediate stage part, and as shown in FIG. A discharge lamp (light source lamp) 9 and a reflecting plate 10 are provided in the light source chamber 8, and holding members 11.11 are provided on both sides of the light source chamber 8 so as to be slidable in the vertical direction.

Each member will be explained in order below.

The battery storage chamber 6 stores the battery 12, and a battery i6a is provided on the upper left side of the upper case 2a.
6a is provided with an electrode plate 6b, and an electrode spring 6C is provided on the back side (right side). The charging switch Sa is a slide switch.

The charging time for flashing the discharge lamp 9 is switched from the OFF state to two stages: the original forming position (2) and the recording paper transfer position (3). The discharge switch Sb is a push button switch or the like, and when operated after charging is completed, it causes the discharge lamp 9 to flash.The light emitting diode 7 lights up when charging is completed to warn that the discharge lamp 9 is in a flashable state. It is something.

The operating levers 4.4 are provided from both sides of the intermediate stage section to the lower surface, and are used to move up and down a holding member 11.11, which will be described later, each consisting of an operating button 4a and a rotating arm 4b, and a pin 4C. is rotatably attached to the upper case 2a.

That is, the operation button 4a is arranged in the button insertion hole 2f formed on both sides of the upper case 2a, and the lower part thereof is arranged in the button insertion hole 2f formed on both sides of the upper case 2a.
The rotating arm 4b is rotatably attached to the upper case 2a and rotates around this pin 4c to move in and out of the upper case 2a. It is arranged in a notch 2g formed in the lower partition plate 2e in the upper case 2a corresponding to the button insertion hole 2f, and its tip is split into two to form the lower partition. It extends and is in contact with the lower surface of the plate 2e. Therefore, when the operating button 4a of the operating lever 4 is pressed from the outside, the rotating arm 4b rotates in the direction of the arrow X around the bottle 4C, as shown in FIG. 4, and its tip moves downward.

The light source chamber 8 is a space formed within the lower case 2b,
Its lower part is open, and a transparent glass (transparent member) 13 is provided in this open part. The discharge lamp 9 is made of a xenon lamp or the like used as a strobe for a camera, and flashes when the above-mentioned discharge switch Sb is operated, and the intensity of the flash varies depending on the set state of the charging switch Sa. In other words, when the charging switch Sa is set to 1iI at the original plate creation position in the 1st stage, the light flashes strongly, and when it is set at the recording paper transfer position H in the 2nd stage, the light flashes weaker than in the 1st stage. 10 is arranged above the discharge lamp 9 and reflects the light from the discharge lamp 9 toward the transparent glass 13 side below. The holding member 11.11 is the operating lever 4
, 4, and when pressed down by the operating lever 4.4, the thermal transfer sheet 14, which will be described later, is pushed down and separated from the transparent glass 13, as shown in FIG. , transparent original plate sheet (described later)
The resin sheet 15 can be set, and when pulled up, the original sheet 15 is held on the lower surface of the transparent glass 13, as shown in FIG.

That is, each of the holding members 11 has a flat plate shape,
The locking portions 11a are located at the lower ends of the locking portions rLJ in the direction facing each other.
As shown in FIG. 2, guide portions 11b, 11b are provided at both ends of the body, and abutment portions 11c, llc are provided at the upper end (lower end in FIG. 2), and these parts are bent as a whole. is constantly pulled upward (downward in FIG. 2) by the coil spring 16. In this case, the lower end locking part 1
As shown in FIG. 5, the original sheet 1a is pressed against the lower surface of the transparent glass 13 by sandwiching the edge of the original sheet 15 into a recess 13a formed at the edge of the transparent glass 13. Note that the recess 13a of the transparent glass 13 is the locking portion 11a.
Guide portions 11b, 11b at both ends are formed deeply so that the locking portion 11a does not protrude downward from the center of the original sheet 15 when the original sheet 15 is sandwiched therebetween.
are vertically movably provided in respective guide grooves 2h, 2h formed on both sides of the lower case 2b. The contact portions 11c and llc at the upper end are each bent slightly outward and inclined, and each upper end thereof is always in contact with the rotating arm 4b of the operating lever 4 located above. coil spring 16
has its lower end attached to the upper end of the holding member 11 between the abutting parts 11c and llc, and its upper end passes between the bifurcated tips of the rotating arm 4b of the operating lever 4 to the lower partition plate above it. It is attached to the attachment hole 2°i of 2e, thereby constantly pulling up the holding member 11 upward.

The holder 3 is used to attach the thermal transfer sheet 14 to the apparatus main body 2, and a lower case 2b is attached to the lower part of the apparatus main body 2.
It is removably attached to cover the

That is, as shown in FIG. 2, the holder 3 has a substantially rectangular box shape with an open top, and an opening 3a is provided at the bottom of the holder 3 in correspondence with the transparent glass 13 of the light source chamber 8. Reel storage portions 3b, 3b are provided on both sides, and hook portions 3c, 3c are provided at the upper portions of the front and rear walls to protrude upward. Therefore, in the holder 3, the hook portion 3C13C removably engages with the locking recesses 2j, 2j (one not shown) provided on the lower surface of the device main body 2, that is, the lower partition plate 2e of the intermediate stage portion. It is attached to the lower part of the device main body 2. In this case, the bottom opening 3a is formed larger than the transparent glass 13 of the light source chamber 8,
When the holder 3 is attached to the main body 2 of the apparatus, the lower surface of the opening 3a is flush with the lower surface of the transparent glass 13 as shown in FIG. When pressed down, the holding member 11 passes through the opening 3a.
．． 11 protrudes downward from the reel storage portions 3b on both sides of 0.
, 3b is a part that rotatably stores the beams 17 and 17, and is separated from the inside of the holder 3 by a partition wall 3d, and the outer wall is inclined to become narrower toward the bottom, and this inclined part An opening 3e for exposing a part of the reel 17 to the outside is formed in the outer wall of the reel 17, and a shaft support 3 for pivotally supporting each shaft portion 17a of the reel 17 is formed in the front and rear parts of the inside.
f and 3f are provided. In this case, the partition wall 3d is configured so as not to impede the vertical movement of the holding member 11 and the operating lever 4 when the holder 3 is attached to the lower part of the apparatus main body 2. Further, the shaft supports 3f, 3f pivotally support the shaft parts 17a, 17a with a certain degree of frictional resistance so that the reel 17 does not rotate freely, and when the holder 3 is attached to the lower part of the device main body 2, the upper case 2a The shaft portions 17a, 17a are held down so as not to rattle in the vertical direction by regulating protrusions 2k, 2k protrudingly provided on the lower partition plate 2e. The reels 17 and 17 each contain a thermal transfer sheet 14
is wound through the lower side of the opening 3a from each reel storage part 3b, 3b, and by turning the reel part 17b exposed from each reel storage part 3b, 3b with a finger or the like against frictional resistance. The thermal transfer sheet 14 is wound up on either side. In addition, the reels 17 and 17 are respectively connected to the shaft supports 3f and 3.
Since each reel 1 is supported with frictional resistance on
The thermal transfer sheet 14 wound around 7.17 does not sag on the way and is stretched over the lower surface of the transparent glass 13 of the light source chamber 8.

FIG. 6 shows the circuit configuration of the thermal transfer device 1 described above. In FIG. This battery 12 is connected to a high voltage generation circuit 19, a flash capacitor CI, and a relay through a contact Sat that operates in conjunction with a charging switch Sa that is interposed between voltage dividing resistors R+, R2, and R3 and a connection hole of a constant voltage detection circuit 18. and trigger circuit 20. and is connected to the discharge lamp 9. The high voltage generation circuit 19 boosts the voltage of the battery 12 to a high voltage.

The charging switch Sa interlocks the contact Sat, and opens the contact Sa+ at the OFF position, and closes the contact Sat at the original production position I and the recording paper transfer position (2).

Voltage dividing resistors R1, R2, and R3 set charging voltage Vo to V.

and v2. In this case, of course Vir>v,>
The relationship is v2. The constant voltage detection circuit 18 is composed of, for example, a Zener diode and a transistor, and operates the transistor when a voltage higher than a predetermined voltage is supplied to the cathode of the Zener diode connected to the input side. When the contact Sa+ of the relay L is closed, the flash capacitor C1 is charged, and when a current flows through the transistor of the constant voltage detection circuit 1B, the contact La is opened and the light emitting diode 7 is turned on via the resistor R4. The trigger circuit 20 includes a voltage boosting transformer base, and when the discharge switch sb is closed, the voltage charged in the flashing capacitor C+ is boosted to cause the discharge lamp 9 to flash.

Next, with one heat transfer Ml, which was performed as described above,
The case of creating an original plate and transferring it to recording paper will be explained.

When creating an original, first remove the holder 3 from the bottom of the device main body 2 as shown in FIG. 2. In this state,
Operate the operating lever 4.4 of the apparatus main body 2 to push down the holding member 11.11 as shown in FIG.
Set 5. That is, the operation button 4a of the operation lever 4
When pressed from the outside, the rotating arm 4b rotates about the pin 4c in the direction of the arrow X, as shown in FIG. 11
c and press down against the coil spring 16. Then, the guide portions 11b and llb at both ends of the holding member 11 are guided by the guide grooves 2h and 2h of the lower case 2b and move downward, and the locking portion 11a at the lower end is placed in the lower part of the light source chamber 8. It is pushed out downward from the provided transparent glass 13. In this state, the locking part 11a of the holding member 11 and the transparent glass 1
Insert the original sheet (15) between 3 and 3.

Then, when the pressure on the operating lever 4 is released, each holding member 11 is pulled up by the coil spring 16 as shown in FIG. Concave SL 3 provided on the edge of 13
As a result, the original sheet 15 is attached to the lower surface of the transparent glass 13. As shown in FIGS. 7 and 8, the original sheet 15 is a transparent resin sheet made of polypropylene, polyester, etc., with fine irregularities 15b formed on one side 15a. This minute unevenness is
For example, it is formed by honing. One surface 15a of the honed original sheet 15 becomes cloudy like ground glass due to the diffused reflection from the fine irregularities 15b, and becomes translucent. However, the original version sheet) 1
5 must have translucency for the reason described later, and for this purpose, it is basically necessary to form irregularities on a highly transparent resin sheet, so in this invention. The original sheet 15 is defined as having translucency regardless of whether it is processed to form an uneven surface or not. This plate sheet) 15 has fine irregularities 15b.
Transparent glass 13 with one side 15a formed with facing outward.
Attach to. After the original sheet 15 is attached, place the main body 2 on top of the original 21 with the original sheet 15 facing down (see FIG. 7), and place the original sheet 15 on the original 21.
Close it to 1. In this case, since the holder 3 is not attached to the lower part of the apparatus main body 2, the original sheet 15 attached under the transparent glass 13 directly contacts the original 21. The original 21 is made by laminating an extremely thin resin sheet 21a of about 5 to 30 m thick and a thin paper 21b made of Japanese paper or the like with an adhesive 21c, and forming an ink image 21d on the resin sheet 21a. Ink image 21d
It is preferable that carbon powder with good heat absorption rate is mixed into resin, and it is formed by electrostatic photography or a thermal printer. In this way, the ink image 21d of the original 21
The unevenness 15b of the original plate sheet 15 is brought into direct contact with the original plate plate, thereby making it possible to create an original plate.

A charging switch 2 provided on the top surface of the device main body 2
Set S, at the master production position I. Then, the contact Sat shown in FIG. 6 is closed, charging of the flash capacitor CI starts, and as the flash capacitor CI is charged, the voltage Vo increases, and at the same time, the constant voltage detection circuit 18
When the input side voltage V1 reaches a predetermined value, the relay L contacts,
is opened, charging of the flash capacitor C1 is stopped, and the light emitting diode 7 is simultaneously turned on. The lighting of the light emitting diode 7 indicates that flash preparation is complete. In this state, when the discharge switch Sb is closed, the voltage stored in the flash capacitor C1 is supplied to the trigger circuit 20, a high voltage is applied to the trigger electrode of the discharge lamp 9, and the discharge lamp 9 emits a strong flash. emits.

In this way, when the discharge lamp 9 emits a flash of light, the light beam passes through the transparent glass 13 provided at the bottom of the light source chamber 8 and the original sheet 15 below it and onto the original 21, as shown in FIG. irradiated. As described above, when the original 21 is irradiated with the light beam from the discharge lamp 9, the original 21 is in close contact with the lower surface of the original sheet 15.
The upper layer of the ink image 21d on the surface of the document 21 (that is, carbon contained in the ink, etc.) is transferred to the lower surface of the upper original plate sheet 15 as an image 22a as shown in FIG. As a result, the original plate 22 is created. In this case, if the flash energy from the discharge lamp 9 is large, the original 2
Almost all of the ink image 21d of No. 1 is on the original plate sheet 15.
transcribed into.

Next, the case where the image 22a transferred using this original plate 22 is transferred onto the recording paper 23 will be described. In this case, first, the reel 1 around which the thermal transfer sheet) 14 is wound is
7.17 is stored in each reel storage part 3b, 3b of the holder 3, and this holder 3 is attached to the lower part of the main body 2 of the apparatus. That is, each end of the thermal transfer sheet 14 is attached to the reel 1.
As shown in FIG. Insert from above reel 17.1
7 are rotatably supported by the shaft supports 3f. In this state, align the holder 3 with the lower part of the device main body 2.

Each hook portion 3C13c provided at the front and rear of the holder 3 is engaged with the locking recess 2j on the device main body 2 side. This results in
A holder 3 is attached to the lower part of the device main body 2. When the holder 3 is attached in this way, only the M plate 22 held on the lower surface of the transparent glass 13 of the light source chamber 8 protrudes downward from the opening 3a of the holder 3, as shown in Figure t55, and the lower surface A thermal transfer sheet) 14 is stretched. The apparatus main body 2 with the thermal transfer sheet 14 stretched over it in this manner is placed on the recording paper 23, and the thermal transfer sheet 14 is brought into close contact with the recording paper 23. This makes it possible to transfer the image onto the recording paper 23.

In this state, when transferring to the recording paper 23,
As in the case of creating the original plate described above, first, the charging switch Sa is set to the recording paper creating position (2). In this case, all operations until the discharge lamp 9 is flashed are the same as in the case of producing the original, except that the input to the constant voltage detection circuit 18 is the connection between the resistors R2 and R3. That is, the voltages Vl and V2 increase as the charging voltage Vo increases, and have a relationship of V+>V7. therefore,
When the constant voltage detection circuit 18 is connected to the master production position, it is more effective than when it is connected to the recording paper production position H.
Works late. In other words, the recording paper transfer position 21n is better when the charging switch Sa is set to the original plate creation position ■.
The charging time for the flash capacitor C1 is longer than when the setting is set to , and the flash capacitor C1 is charged to a higher voltage. Therefore, the flash energy of the discharge lamp 9 is greater when creating the original plate.
It is smaller in the case of recording paper transfer.

After the flash capacitor CI is charged to a high voltage in this way, the discharge switch Sb is closed and the discharge lamp 9 is caused to flash. Then, as shown in FIG. 9, the leading line is irradiated through the original sheet 15 onto the thermal transfer sheet 14 below. When the light beam is irradiated onto the original 22 in this way, the original 22 has an ink image 21 of the original 21 on its lower surface.
Since there is an image 22a formed by transferring a part of the image 22a, the light rays do not pass through this image 22a, and since this image 22a is made of black carbon or the like which has good heat absorption, The image 22a absorbs light and generates heat; however, other parts transmit light and do not generate heat.On the other hand, the lower thermal transfer sheet 14 has a total thickness of approximately A light reflecting layer 14b made of a metal vapor deposited layer such as nickel (Xi), aluminum (A), copper (Cu), etc. is formed on the upper surface of a transparent or opaque base film 14a of about 3 to 50 g and made of polyester or the like. , a heat-sensitive ink layer 14c made of heat-melting color ink or the like is formed on the lower surface of the base film 14a.Therefore, the light beams that have passed through the portion of the original 22 other than the image 22a are transferred to the thermal transfer sheet (14). Light reflective layer 14b
The thermal transfer sheet 14 in this area does not have any heat, but the image 22a of the original plate 22 has heat due to the irradiated light, and this heat is transferred to the thermal transfer sheet 1).
The light is transmitted to the heat-sensitive ink layer 14c through the reflective layer 14b and the base film 14a of No. 4, and only this portion of the heat-sensitive ink layer 14c is melted, and this melted portion 14d is transferred to the lower recording material as shown in FIG. The image is thermally transferred onto the paper 23. As a result, an image corresponding to the image 22a of the original plate 22 is transferred to the recording paper 2.
3 is transferred reliably and clearly. In addition, another recording paper 2
3, rotate either one of the reels 17 and 17 exposed from the holder 3 with your fingers, and pull out the thermal transfer sheet 14 necessary for one transfer under the original plate 22. All you have to do is set it and flash the discharge lamp 9 in the same way as described above.By repeating this process, you can transfer as many sheets as you like, and you can also easily transfer it to bound recording paper such as a notebook. I can do it.

[Effects of the Invention] As explained in detail above, according to the thermal transfer method of the present invention, the thermal energy of the light rays irradiated from the translucent resin sheet side is absorbed by the ink image of the document, and the ink image is As the ink image is melted, the temperature of the portion of the resin sheet that is in close contact with the ink image is increased, so that the ink image is transferred only to the upper layer side or almost to the entire resin sheet.

In this case, since the resin sheet has fine irregularities formed in advance, the ink image is transferred in such a way that it bites into the irregularities, resulting in a so-called anchor effect.

Therefore, since thermal transfer is performed without using any elements that change over time such as a coloring agent, it has good maintainability and excellent fidelity.

In this case, if a thin paper and a resin film are used as the original to form the ink image, and the ink image is formed on the resin film, the ink image of carbon, etc. The image can be transferred clearly and the quality of the transferred image can be improved.

Further, in the thermal transfer device of the present invention, a transparent resin film on which fine irregularities are formed is held on a transparent member, and a light source is turned on while the irregularity-formed surface of the resin film is in close contact with the ink image forming surface of the document. Since it emits a flash of light, the above-described thermal transfer method can be carried out efficiently.

[Brief explanation of the drawing]

1 to 10 show an embodiment of the present invention. FIG. 1 is an external perspective view of a thermal transfer device, FIG. 2 is a perspective view of a state in which a holder is removed from the main body of the device, and FIG. A cross-sectional view of the thermal transfer device, Figure 4 is a cross-sectional view with the operating lever operated, Figure 5 is a cross-sectional view with the original plate set, Figure 6 is a diagram showing the circuit configuration of the thermal transfer device, and Figure 7 is a cross-sectional view of the thermal transfer device. Fig. 8 is an enlarged cross-sectional view of the main part of the original plate created by a thermal transfer device, and Fig. 9 is an enlarged sectional view of the main part of the original plate when thermal transfer is performed on recording paper using the original plate. FIG. 10 is an enlarged sectional view of the main part of the transferred recording paper. ■・・・Thermal transfer device, 8...Light source chamber, 9
...Discharge lamp (light source lamp), 11...
...Holding member, 13...Transparent glass (transparent member), 14...Thermal transfer sheet, 14b...
・Light reflective layer, 14c...Thermal ink layer, 15.
...Original plate sheet (resin sheet), 15a...
. . . One surface (irregularity forming surface), 15b . . . Fine unevenness, 21 . . . Original document, 21ci . . . Ink image, 22 . . . Original plate, 22a ...Statue, 23...Recording paper. Patent Applicant Casio Meter 'Ba Co., Ltd. rfJ-1- Figure 5 Figure Figure Figure Figure Figure

Claims (3)

[Claims] (1) A translucent resin sheet with fine irregularities formed on one surface and an original on which an ink image is formed are brought into close contact with the irregularity-formed surface of the resin sheet and the ink image-formed surface of the original. A thermal transfer method characterized in that at least an upper layer portion of the ink image is transferred to the resin sheet by irradiating a light beam from the resin sheet side. (2) The thermal transfer method according to claim 1, wherein the document comprises thin paper and a resin film, and the ink image is formed on the resin film. (3) A case body having a light source chamber and a power supply chamber, a light source lamp disposed within the light source chamber, a light reflecting plate disposed on the back side of the light source lamp, and a case body provided opposite to the light reflecting plate. a transparent member that is housed in the power supply room and that flashes the light source lamp; and a transparent resin film that has fine irregularities formed on one side, and the transparent member that is placed in the transparent member with the irregularity-formed surface facing outward. a holding member held on the member, the uneven surface of the resin film is brought into close contact with the ink image forming surface of the document, and the light source lamp is flashed to transfer at least the upper layer of the ink image to the resin sheet. A thermal transfer method characterized by: