JP2797323B2 - Thermal transfer method and apparatus - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a thermal transfer method and an apparatus therefor.

[Prior Art] Conventionally, thermal transfer methods and stencil type methods have been known as thermal transfer methods. The heat-sensitive type is a method in which a heat-sensitive sheet is brought into close contact with an ink image forming surface of a document to apply heat energy such as a light beam so that a coloring layer of the heat-sensitive sheet is colored according to the ink image of the document. In the stencil type, the stencil printing plate is placed on the original, and a light beam is irradiated from above to transfer the image of the original to the stencil printing plate to create the stencil. Is applied, and the original image is sequentially transferred to a recording paper such as a postcard.

[Problems to be Solved by the Invention] However, since the former heat-sensitive type method uses a heat-sensitive coloring layer, if it is stored for a long time, external light is accumulated and the entire coloring layer is colored. However, there is a disadvantage that storage stability is poor. Further, in this method, when a thick line and a thin line are present in the ink image of the original, the heat energy breathed by the thick line is larger, so that the coloring layer corresponding to the thick line is formed around the line. Until the color is developed, the fidelity is poor.

In the latter stencil type method, a hole is made in the stencil printing plate by irradiating a light beam, and the ink is impregnated into the recording paper through this hole. Otherwise, the ink oozes out, resulting in poor storage stability and poor fidelity.

SUMMARY OF THE INVENTION An object of the present invention is to provide a thermal transfer method and an apparatus therefor which are excellent in storage stability and fidelity.

[Means for Solving the Problems] In the thermal transfer method of the present invention, a translucent original sheet having fine irregularities formed on at least one surface is prepared,
An ink image is formed on the concave / convex forming surface of the original sheet, and the original sheet on which the ink image is formed is transparent on the transparent member of the flash device having a transparent member and a light source lamp. A transfer sheet having a light reflection layer and a heat-sensitive ink layer is laminated on the original sheet fixed and held on the transparent member, and the recording paper is placed in close contact with the heat-sensitive ink layer. Then, the light source lamp is flashed while the thermal ink layer is pressed against the recording paper by the transparent member of the flash device, and the thermal ink layer corresponding to the ink image of the original sheet is transferred to the recording paper. In this case, the original sheet may have fine irregularities formed only on one side, or may be formed on both sides. In addition, the ink image formed on the original sheet may be a transfer of the ink image of the original to the original sheet by irradiation of light, or electrostatic imaging, printing by a thermal printer, handwriting with a writing instrument, or any of these. Are formed. Moreover, the ink image is formed on one side or both sides of the original sheet in which fine irregularities are formed on both sides.

Further, the thermal transfer device of the present invention includes a case body having a light source chamber and a power supply 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 corresponding to the
A power supply unit that flashes the light source lamp housed in the power supply room,
An original sheet having a light-transmitting property in which an ink image is formed on a concavo-convex formation surface in which fine irregularities are formed on at least one surface,
A holding member for fixing and holding the original sheet to the transparent member, a light reflection layer and a heat-sensitive ink layer, the light reflection layer facing the transparent member, and detachably attached to the case body across the transparent member. And a transfer sheet disposed between the original sheet and the recording paper.

[Operation] According to the thermal transfer method of the present invention, a translucent original sheet having fine irregularities formed on at least one surface is prepared, and an ink image is formed on the irregularity-formed surface of the original sheet. The original sheet does not use any elements that change with time, such as the penetration of a color former or ink, so that it has good preservability, excellent fidelity, and has fine irregularities on at least one surface of the original sheet. By doing so, the ink image is formed in such a manner as to penetrate the fine unevenness, so-called anchor effect is obtained, and the ink image can be formed reliably and firmly. For this reason, in addition to the transfer of the ink image of the original to the original sheet by irradiation of the light beam, the electrostatic copying, the printing by the thermal printer, and the like, the ink image can be easily formed by handwriting. Then, a transfer sheet having a light reflecting layer and a thermal ink layer is laminated on the original sheet fixed and held by the transparent member of the flash device, and the recording sheet is pressed against the thermal ink layer in close contact with the heat sensitive ink layer. When the lamp is flashed and light is irradiated from the original sheet side, the light is transmitted through the part of the original sheet other than the ink image, and the transmitted light is reflected by the light reflection layer of the transfer sheet. The image portion absorbs light rays and has heat, and this heat is transmitted to the thermal ink layer via the light reflecting layer of the transfer sheet, and the thermal ink image corresponding to the ink image is melted. It is transferred to the recording paper. In this case, since the heat-sensitive ink layer of the transfer sheet is in pressure contact with the recording paper, the transfer of the molten portion to the recording paper is more reliable, and clear transfer can be performed.

Further, according to the thermal transfer device of the present invention, the original sheet is fixedly held on the transparent member by the holding member, and the transfer sheet having the light reflection layer and the heat-sensitive ink layer is detachably attached to the case body. When an ink image is formed on the original sheet, the transfer sheet is removed from the case body, the original sheet is fixed and held on a transparent member by a holding member, and the original sheet is irradiated with light rays from the original sheet side. At least the upper layer portion of the ink image can be transferred to the uneven surface of the original sheet.When the ink image formed on the original sheet is copied onto recording paper, the original sheet on which the ink image has been formed is copied. By fixing and holding the transparent member with the holding member, attaching a transfer sheet to the case body, and irradiating light rays from the original sheet side. Can be transferred to the heat-sensitive ink image of a portion corresponding to the ink layer of the precursor sheet to a recording sheet, a thermal transfer method described above can be efficiently carried out.

First Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

1 to 6 show a thermal transfer device for carrying out the thermal transfer method of the present invention. This thermal transfer apparatus 1 is an apparatus main body 2
The holder 3 is configured to be detachably attached to the lower part as shown in FIG. As shown in FIGS. 1 and 2, the apparatus main body 2 has a three-stage box shape, and includes an upper case 2a forming two steps of an upper side (a lower side in FIG. 2) and a lower side (a lower side). Lower case that forms the step (upper side in Fig. 2)
2b are integrally fastened by screws (not shown), and the holder 3 is mounted so as to cover the lower case 2b. The upper case 2a has a thin hollow box shape, and as shown in FIG. 1, operation levers 4 and 4 are provided on both sides of an intermediate step portion, and a connection portion 5 of an AC adapter is provided on a front side surface. ing. The upper part of the upper case 2a has a box shape slightly smaller on both sides than the middle part, and as shown in FIG. 3, its inside is partitioned by an upper partition plate 2d provided on the upper part of the middle part. A battery storage chamber 6 is provided in the inside of the battery compartment, and a charging switch S _a , a discharging switch S _b , and a light emitting diode 7 are provided on the upper surface. The lower case 2b has a box shape slightly smaller than the intermediate stage, and as shown in FIG. 3, the inside thereof is partitioned by a lower partition plate 2e provided at a lower portion of the intermediate step, whereby the light source chamber 8 is formed. Formed under the light source 8
Inside, a discharge lamp (light source lamp) 9 and a reflector 10 are provided, and holding members 11, 11 are provided on both side surfaces so as to be slidable up and down.

 Hereinafter, each member will be described in order.

The battery storage room 6 stores the battery 12 and has an upper case
A battery cover 6a is provided on the upper left side of 2a, an electrode plate 6b is provided on the battery cover 6a, and an electrode spring 6c is provided on the back side (right side). The charging switch _Sa is composed of a slide switch, and performs charging for causing the discharge lamp 9 to flash.
Discharge switch S _b is made of push button switches and the like, by operating after completion of charging, the discharge lamp 9 is flash.
The light emitting diode 7 lights up when charging is completed, and warns of a state in which the discharge lamp 9 can flash.

The light source room 8 is a space formed in the lower case 2b,
The lower part is opened, and a transparent glass (transparent member) 13 is provided in the opened part. Discharge lamp 9 is made of a xenon lamp or the like used for the flash of a camera, and flash by operating the discharge switch S _b described above,
The degree of the flash is the same both when the original is created and when the recording paper is transferred. The reflection plate 10 is disposed above the discharge lamp 9 and reflects light from the discharge lamp 9 to the lower transparent glass 13 side.

The operation levers 4, 4 are provided from both side surfaces to the lower surface of the intermediate step portion, and move up and down holding members 11, 11 described later. Each of the operation levers 4 includes an operation button 4a and a rotating arm 4b, and a pin 4c Thus, it is rotatably attached to the upper case 2a. That is, the operation button 4a is left in the button insertion holes 2f formed on both sides of the upper case 2a, and
The upper case 2a is rotatably mounted by the pin 4c, and rotates around the pin 4c to enter and exit the upper case 2a. The rotating arm 4b is a plate-like member bent in an “L” shape, and has an upper case.
The lower partition plate 2e in 2a is disposed in a notch 2g formed corresponding to the button insertion hole 2f, and its tip is divided into two forks and extends to contact the lower surface of the lower partition plate 2e. Therefore, when the operation button 4a is pressed from the outside, the operation arm 4 rotates the rotation arm 4b around the pin 4c in the direction of the arrow X as shown in FIG. 4, and the tip moves downward.

The holding members 11, 11 move up and down in conjunction with the operation of the operation levers 4, 4, and when pushed down by the operation levers 4, 4, they are pushed out below the transparent glass 13 as shown in FIG. At the same time, as shown in FIG. 6, a later-described thermal transfer sheet 14 is pushed downward from the transparent glass 13 to be separated from the transparent glass 13 so that an original sheet (resin sheet) 15 described later can be set. As shown in FIG. 5, the original sheet 15 is held on the lower surface of the transparent glass 13. That is, each of the holding members 11 has a flat plate shape, and at the lower end thereof, an engaging portion 11a is bent in an "L" shape in a direction facing each other. 11b, 11b are provided, and contact portions 11c, 11c are provided at the upper end (the lower end in FIG. 2),
All of them are always drawn upward (downward in FIG. 2) by the coil spring 16. In this case, the locking part at the lower end
As shown in FIG. 5, 11a sandwiches the edge of the original sheet 15 into a recess 13a formed in the edge of the transparent glass 13 and presses the original sheet 15 against the lower surface of the transparent glass 13. In addition,
In the state where the concave portion 13a of the transparent glass 13 has the locking portion 11a sandwiching the original sheet 15, the locking portion 11a is positioned from the center of the original sheet 15.
Are formed deeply so as not to protrude downward. The guide portions 11b, 11b at both side ends are provided in the respective guide grooves 2h, 2h formed on both side surfaces of the lower case 2b so as to be vertically movable. The upper end contact portions 11c, 11c are slightly bent outward and inclined, respectively, and their respective upper ends are always in contact with the upper pivot arm 4b of the operation lever 4. Coil spring
16 is a holding member 11 whose lower end is between the contact portions 11c, 11c.
The upper end of the holding member 11 is attached to the mounting hole 2i of the lower partition plate 2e above the lower end of the pivoting arm 4b of the operating lever 4 through the bifurcated tip of the operating lever 4.
Is always raised upward.

The holder 3 attaches the thermal transfer sheet 14 to the apparatus main body 2 and is detachably mounted on a lower portion of the apparatus main body 2 by covering a lower case 2b. That is, as shown in FIG. 2, the holder 3 has a substantially square box shape with an open top, and an opening 3a is provided at the bottom thereof in correspondence with the transparent glass 13 of the light source chamber 8, and this opening 3a is formed. Reel storage sections 3b, 3b are provided on both sides with the hook section 3 above the front and rear walls.
c and 3c are provided to protrude upward. Therefore,
The holder 3 has hooks 3c, 3c provided on the lower surface of the apparatus main body 2, that is, locking recesses 2j, 2j provided on the lower partition plate 2e of the intermediate step.
(One not shown) by releasably engaging
It is mounted on the lower part of the apparatus main body 2. In this case, the bottom opening
3a is formed larger than the transparent glass 13 of the light source chamber 8, and when the holder 3 is mounted on the apparatus main body 2, the lower surface of the opening 3a is in contact with the lower surface of the transparent glass 13 as shown in FIG. When the holding members 11, 11 are pushed down,
The holding members 11, 11 protrude downward through the opening 3a.
The reel storage sections 3b, 3b on both sides are sections for rotatably storing the reels 17, 17, and the holders 3 are respectively formed by partition walls 3d.
The outside wall is inclined so as to become narrower downward, and an opening 3e that exposes a part of the reel 17 to the outside is formed on the outside wall of the inclined portion, and the front and rear of the inside is formed. A shaft support 3f for supporting each shaft 17a, 17a of the reel 17,
3f is provided. In this case, the partition wall 3d is configured so as not to hinder the vertical movement of the holding member 11 and the operation lever 4 when the holder 3 is attached to the lower part of the apparatus main body 2. The shaft supports 3f, 3f support the shafts 17a, 17a with a certain degree of frictional resistance so that the reel 17 does not rotate freely. When the holder 3 is attached to the lower part of the apparatus main body 2, the upper case 2a The shaft portions 17a, 17a are pressed by the regulating projections 2k, 2k projecting from the lower partition plate 2e so as not to rattle in the vertical direction. The heat transfer sheet 14 is wound around the reels 17 through the lower side of the opening 3a from each of the reel housings 3b, 3b, and the reels 17b, which are exposed from each of the reel housings 3b, 3b, resist frictional resistance with a finger or the like. Then, the thermal transfer sheet 14 is wound around either side. In addition,
Since the reels 17, 17 are supported by the bearings 3f, 3f, respectively, with frictional resistance, the thermal transfer sheet 14 wound around the reels 17, 17 does not sag in the middle, and the light source chamber 8
Is stretched on the lower surface of the transparent glass 13.

As shown in FIG. 7, the original sheet 15 attached to the lower surface of the transparent glass 13 of the light source chamber 8 is made of a transparent resin sheet such as polypropylene or polyester.
a, 15a are formed with fine irregularities 15b. The fine irregularities 15b are formed by, for example, honing. The surface of the honed original sheet 15 becomes opaque like a ground glass and becomes translucent due to the irregular reflection of the fine irregularities 15b, but has translucency. The original sheet 15 can form an ink image not only by electrostatic copying and printing by a thermal printer, but also by handwriting with a writing instrument as described later. In this case, it is desirable to make the thickness of the original sheet 15 extremely thin, about 5 to 30 μm, in consideration of the low heat absorption of the ink image formed by the writing instrument. For this reason, the original sheet 15 is difficult to be mounted, so that the original sheet 15 is bonded to a frame-shaped support 24 as shown in FIG. Since the frame-shaped support 24 is a frame having a hollow central portion, the thermal transfer sheet 14
If the recording paper 23 described below cannot be pressed against
An elastic sheet (not shown) may be provided under 23. The original 21 that can be transferred by the original sheet 15 includes an object on which an ink image is formed by carbon toner, a print record printed by a summer printer using a thermal ink sheet, a newspaper and a magazine printed by ink. And the like, or a written record written with a writing instrument using a pencil, a ball-point pen, or ink. In short, manuscript 21
It is desirable that the ink image 21a is obtained by mixing carbon powder having a good heat absorption rate into a resin.

The thermal transfer sheet 14 wound around each of the reels 17 of the holder 3 transfers the image transferred to the original sheet 15 onto a recording paper 23 such as plain paper, as shown in FIG. A light reflecting layer having a total thickness of about 3 to 50 μm and comprising a metal deposited layer of nickel (Ni), aluminum (Al), copper (Cu) or the like on the upper surface of a transparent or opaque base film 14a such as polyester; 14b, and a heat-meltable ink layer 14c made of a color ink having a heat-melt property is formed on the lower surface of the base film 14a.

Next, the case where the original 22 is created and transferred to the recording paper 23 by the thermal transfer device 1 configured as described above will be described.

When preparing the master 22, the holder 3 is first removed from the lower part of the apparatus main body 2 as shown in FIG. In this state, the operating levers 4 and 4 of the apparatus main body 2 are operated to push down the holding members 11 and 11 as shown in FIG. Set sheet 15. That is, when the operation button 4a of the operation lever 4 is pushed from the outside, as shown in FIG. 4, the rotation arm 4b rotates around the pin 4c in the arrow X direction, and the tip of the rotation arm 4b is held. The respective contact portions 11c of the member 11 are pushed down against the coil spring 16. Then, the holding member 11 is moved downward with the guide portions 11b, 11b at both ends thereof being guided by the guide grooves 2h, 2h of the lower case 2b, and the locking portion 11a at the lower end thereof is positioned below the light source chamber 8. It is extruded downward from the provided transparent glass 13. In this state, the original sheet 15 is inserted between the locking portion 11a of the holding member 11 and the transparent glass 13 while being supported by the frame-shaped support 24. In this case, if necessary, the original sheet 15 may be bonded to the frame-shaped support 24. When the pressing of the operation lever 4 is released, as shown in FIG. 5, each holding member 11 is pulled up by the coil spring 16, and the locking portion 11 a at the lower end makes the edge of the original sheet 15 It is sandwiched in the recess 13a provided on the edge. As a result, the original sheet 15 is attached in close contact with the lower surface of the transparent glass 13. After the original sheet 15 is attached in this manner, the apparatus body 2 is placed on the original 21 with the original sheet 15 down.
(See Fig. 7), and place the original sheet 15
Press against 21. In this case, since the holder 3 is not attached to the lower part of the apparatus main body 2, fine irregularities 15 b formed on the lower surface 15 a of the original sheet 15 mounted under the transparent glass 13 are directly applied to the original 21. Crimp. This allows
The master 22 can be created.

Then, set the charging switch S _a provided on the upper surface of the apparatus main body 2 to the ON state. Then, charging starts,
When the charging is completed, the light emitting diode 7 turns on. When the discharge switch _Sb is operated in this state, the discharge lamp 9
Emits a strong flash. When the discharge lamp 9 emits a flash as described above, the light beam is applied to the original 21 through the transparent glass 13 provided at the lower part of the light source chamber 8 and the original sheet 15 below the light source, as shown in FIG. You. Then, since the fine irregularities 15b of the original sheet 15 are in pressure contact with the ink image forming surface of the original 21, the heat energy of the light beam transmitted through the original sheet 15 is absorbed by the ink image 21a of the original 21. As the ink image 21a is melted, the temperature of the original sheet 15 in a portion pressed against the ink image 21a increases,
As shown in FIG. 8, the ink image 21a has its upper layer (that is, carbon or the like contained in the ink) bite into the fine irregularities 15b of the original sheet 15, and is transferred as a transfer ink image 22a. You. As a result, the ink image 21a of the original 21 is faithfully transferred to the original sheet 15, and the original 22 is created. In this case, if the flash energy from the discharge lamp 9 is large, almost all of the ink image 21a of the original 21 is transferred to the original sheet 15.

Next, a case where the original transfer is performed to the recording paper 23 using the original 22 will be described.

In this case, the above-mentioned original plate 22 may be used as it is, but here, another additional ink image 22b is formed on the above-mentioned original plate 22. This additional ink image 22b is used for electrostatic copying,
It is formed by handwriting with a writing instrument other than printing by a thermal printer. In this case as well, the original sheet 15
Ink image on the fine irregularities 15b formed on the surface 15a
Since the recess 22b penetrates, the additional ink image 22b is formed reliably and clearly. Further, the additional ink image 22b may be on both the upper and lower surfaces of the original plate 15, but is preferably a transfer ink image.
The upper surface side where 22a is not formed is preferable. This is the transfer ink image 22a formed beforehand when forming the additional ink image 22b.
In order not to pollute. Further, it is desirable that the additional ink image 22b is formed so as not to overlap with the transfer ink image 22a formed in advance.

When the main transfer on the recording paper 23 is performed by using the master 22 on which the additional ink image 22b is formed in addition to the transfer ink image 22a, first, the reel on which the thermal transfer sheet 14 is wound
17 and 17 are stored in the respective reel storage portions 3b and 3b of the holder 3,
This holder 3 is mounted on the lower part of the apparatus main body 2. That is, the respective ends of the thermal transfer sheet 14 are wound around the reels 17 and 17, respectively, and the intermediate thermal transfer sheet 14 is disposed below the holder 3 as shown in FIG. Inserted through the side of the holder 3 from above the reel storage portions 3b, 3b, and each shaft portion 17a of the reel 17, 17,
f ... is rotatably supported. In this state, the holder 3 is made to correspond to the lower part of the apparatus main body 2, and the hooks 3c, 3c provided before and after the holder 3 are engaged with the locking recesses 2j on the apparatus main body 2 side. Thereby, the holder 3 is mounted on the lower part of the apparatus main body 2. When the holder 3 is mounted in this manner, only the original plate 22 held on the lower surface of the transparent glass 13 of the light source chamber 8 projects downward from the opening 3a of the holder 3, and the thermal transfer sheet 14 is stretched on the lower surface. The apparatus main body 2 on which the thermal transfer sheet 14 is stretched as described above is disposed on the recording paper 23, and the thermal transfer sheet 14 is brought into close contact with the recording paper 23. As a result, transfer to the recording paper 23 becomes possible.

In this state, when transferring to the recording paper 23,
As with the original creation described above, first, set the charging switch S _a ON state, by operating the discharge switch S _b after charging is completed, the discharge lamp 9 is flash. Then, as shown in Fig. 10, the light beam
The thermal transfer sheet 14 thereunder is radiated through 15. When the light beam irradiates the master 22 in this manner, the transfer ink image 22a and the additional ink image 22b are provided on the master 22 as described above. Does not pass through, and the transfer ink image 22a and the additional ink image 22b contain light-absorbing black carbon and the like. With. Since the other portions transmit light, they do not have heat. Therefore, the light transmitted through the portion of the master 22 other than the ink image 22a is reflected by the light reflecting layer 14b of the thermal transfer sheet 14, and the heat transfer sheet 14 in this portion does not have heat, but the transfer ink of the master 22 does not have heat. Since the image 22a and the portion of the additional ink image 22b have heat due to the irradiated light beam, this heat is transmitted to the hot-melt ink layer 14c via the light reflection layer 14b and the base film 14a of the thermal transfer sheet 14, and The hot-melt ink layer 14c is melted, and the melted portion 14d
As shown in the figure, the image is thermally transferred to the lower recording paper 23. As a result, the transfer ink image 22a and the additional ink image 2
The image corresponding to 2b is reliably and clearly transferred to the recording paper 23.

Then, when transferring to another recording paper 23 again, one of the reels 17, 17 exposed from the holder 3 is turned with a finger or the like, and the thermal transfer sheet 14 necessary for one transfer is transferred to the original plate. The discharge lamp 9 may be flashed in the same manner as described above by pulling out and setting a new one under 22. By repeating this, any number of sheets can be transferred, and furthermore, it can be easily transferred to a recording paper bound with a note or the like. In this case, when the transfer ink image 22a transferred to the original sheet 15 is thermally transferred to recording paper via a normal ink sheet, the transfer ink image 22a is transferred little by little to the ink sheet, so that several It becomes unusable just to transfer it to the recording paper. However, in the present invention, the thermal transfer sheet 14 in which the light reflection layer 14b made of a metal deposition layer is formed on the upper surface of the ink sheet is used, and the transfer ink image 22a of the original sheet 15 is in contact with the light reflection layer 14b. Is not transferred to the light reflecting layer 14b at all, and an extremely large amount of recording paper 2
3 ... can be transferred.

On the other hand, when replacing the original plate 22, the operation levers 4, 4
When the respective operation buttons 4a, 4a are pressed from the outside, the respective locks 11a, 11a of the holding members 11, 11 are pushed down below the transparent glass 13, as shown in FIG. 6, and the locks 11a, 11a As a result, the thermal transfer sheet 14 is separated below the transparent glass 13, so that it is not necessary to remove the holder 3 from the apparatus main body 2, and the original plate 22 can be easily and easily replaced.

In the above-described embodiment, the original sheet 15 is used as the original 22. However, the invention is not limited thereto, and the original sheet 15 to which the ink image 21a of the original 21 has been transferred can be used as it is as a copy.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS.

In the thermal transfer method of the second embodiment, fine irregularities 30b are formed only on one surface (upper surface) 30a of the original sheet 30, and an ink image 30c is formed on the irregular surface.
This is a method of transferring to the recording paper 23 by using the thermal transfer device 1 of the first embodiment described above. That is, similarly to the first embodiment, the original sheet 30 is formed by forming fine irregularities 30b on the upper surface 30a of a transparent resin sheet made of polypropylene, polyester, or the like by honing or the like, and has a light transmitting property. In addition, as in the first embodiment, the original sheet 30 is used to form an ink image by electrostatic copying, printing by a thermal printer, handwriting with a writing instrument, or the like. It is also possible to transfer the ink image 21a as a transfer ink image. Also in this case, in consideration of the low heat absorption of the ink image by the writing implement, it is desirable to make the thickness of the original sheet 30 extremely thin, about 5 to 30 μm. Therefore, it is attached and attached to the frame-shaped support 24 as in the first embodiment described above.

The original sheet 30 on which the ink image 30c is formed as described above.
When the image is transferred onto the recording paper 23 using the original as a master, the operating lever 4 is first operated to release the locking portion 11a of the holding member 11 as shown in FIG. Transparent glass 1
In a state where the original sheet 30 is pressed down, the original sheet 30 on which the ink image 30c is formed is arranged on the lower surface of the transparent glass 13, and the original sheet 30 is fixed to the transparent glass 13 by the locking portion 11a of the holding member 11. Hold. In this case, the original image sheet 30 on which the ink image 30c is formed is brought into close contact with the lower surface of the transparent glass 13 so as to face the ink image forming surface. After the original sheet 30 is mounted in this manner, the holder 3 is mounted on the apparatus main body 2 and the thermal transfer sheet is moved across the lower side of the original sheet 30.
Cross over 14. Then, the apparatus main body 2 is arranged on the recording paper 23 with the thermal transfer sheet 14 facing down. Then, as shown in FIG. 11, the original sheet 30 is pressed by the transparent glass 13 and pressed against the thermal transfer sheet 14, and the thermal transfer sheet 14 is pressed against the recording paper 23. As a result, transfer to the recording paper 23 becomes possible.

In this state, when transferring to the recording paper 23,
As in the first embodiment, sets the charging switch S _a ON state, by operating the discharge switch S _b after charging is completed, the discharge lamp 9 is flash. Then, as shown in FIG. 11, the light beam is irradiated on the thermal transfer sheet 14 therebelow through the original sheet 30. When the original sheet 30 is irradiated with the light rays as described above, the original sheet 30 is provided with the ink image 30c as described above, and thus the ink image 30c absorbs the light rays and has heat. This heat is transmitted to the hot-melt ink layer 14c via the light reflection layer 14b and the base film 14a of the heat transfer sheet 14, and the hot-melt ink layer 14c in this portion is melted. Is thermally transferred to the lower recording paper 23. This allows
The image corresponding to the ink image 30c of the original sheet 30 is the recording paper 2
3Transferred securely and clearly.

The transfer sheet 14 in each of the above-described embodiments does not necessarily have to have the light reflecting layer 14b on the upper surface of the base film 14a and the heat-melting ink layer 14c on the lower surface. May be provided with a hot-melt ink layer, or a light-reflective layer and a hot-melt ink layer may be sequentially laminated on the lower surface of the base film. In this case, a transparent heat resistant material such as polyimide is used as the base film. It is necessary to use a film.

Further, the frame-shaped support 24 may be provided on either the upper surface or the lower surface of the original sheet 15, and is not necessarily required to be frame-shaped, but may be surface-shaped. In this case, any transparent material may be used.

[Effects of the Invention] As described above in detail, according to the thermal transfer method of the present invention, a translucent original sheet having fine irregularities formed on at least one surface is prepared, and the irregularities of the original sheet are prepared. Since an ink image is formed on the formation surface, no element that changes over time such as a coloring agent or ink penetration is used as the original sheet at all, and therefore, it has good storability, excellent fidelity, and the original sheet. By forming the fine unevenness on at least one surface, the ink image is formed in such a manner as to penetrate the fine unevenness, so-called anchor effect can be obtained, and the ink image can be reliably and firmly formed.
For this reason, in addition to the transfer of the ink image of the original to the original sheet by irradiation of the light beam, the electrostatic copying, the printing by the thermal printer, and the like, the formation of the ink image by handwriting can be easily performed. Then, a transfer sheet having a light reflecting layer and a thermal ink layer is laminated on the original sheet fixed and held by the transparent member of the flash device, and the recording sheet is pressed against the thermal ink layer in close contact with the heat sensitive ink layer. Flashing lamp,
When a light beam is irradiated from the original sheet side, the light beam is transmitted through the portion of the original sheet other than the ink image, and the transmitted light is reflected by the light reflection layer of the transfer sheet. Absorbs heat and transfers the heat to the heat-sensitive ink layer via the light reflection layer of the transfer sheet, melting the heat-sensitive ink layer corresponding to the ink image, and transferring the fused portion to the recording paper. Is done. In this case, since the heat-sensitive ink layer of the transfer sheet is in pressure contact with the recording paper, the transfer of the molten portion to the recording paper is more reliable, and clear transfer can be performed.

Further, according to the thermal transfer device of the present invention, the original sheet is fixedly held on the transparent member by the holding member, and the transfer sheet having the light reflection layer and the heat-sensitive ink layer is detachably attached to the case body. When an ink image is formed on the original sheet, the transfer sheet is removed from the case body, the original sheet is fixed and held on a transparent member by a holding member, and the original sheet is irradiated with light rays from the original sheet side. At least the upper layer portion of the ink image can be transferred to the uneven surface of the original sheet.When the ink image formed on the original sheet is copied onto recording paper, the original sheet on which the ink image has been formed is copied. By fixing and holding the transparent member with the holding member, attaching a transfer sheet to the case body, and irradiating light rays from the original sheet side. Can be transferred to the heat-sensitive ink layer in the portion corresponding to the ink image of the original sheet to a recording sheet, a thermal transfer method described above can be efficiently carried out.

[Brief description of the drawings]

1 to 10 show a first embodiment of the present invention. FIG. 1 is a perspective view showing the appearance of a thermal transfer apparatus, FIG. 2 is a perspective view showing a state in which a holder is removed from an apparatus main body, and FIG. FIG. 4 is a cross-sectional view of the main body, FIG.
FIG. 6 is a cross-sectional view showing a state in which an original sheet is set, FIG. 6 is a cross-sectional view showing a state in which a holder is originally attached to the apparatus, FIG. FIG. 9 is an enlarged cross-sectional view of a main part of an original prepared by the apparatus, FIG. 9 is an enlarged cross-sectional view of a main part in a state where thermal transfer is performed on recording paper using the original, and FIG. 10 is an enlarged main part of the transferred recording paper. Sectional view,
11 and 12 show a second embodiment. FIG. 11 is an enlarged sectional view of a main part in a state in which thermal transfer is performed on a recording sheet using an original sheet, and FIG. 12 is a transferred recording sheet. 3 is an enlarged sectional view of a main part of FIG. 1 ... thermal transfer device, 2 ... device body (case body), 6
... Battery storage room (power supply room), 8 ... Light source room, 9 ... Discharge lamp (light source lamp), 10 ... Reflector, 11 ... Holding member, 12 ... Battery, 13 ... Transparent glass (transparent) Members), 14 ...
… Thermal transfer sheet, 15, 30… original sheet (resin sheet), 15a, 30a… uneven surface, 15b, 30b… fine unevenness, 21… original, 21a… ink image, 22… original , 22a…
... Transfer ink image, 22b ... Additional ink image, 23 ... Recording paper.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B41M 5/38-5/40 G03B 27/02

Claims (5)

(57) [Claims] 1. A step of preparing a translucent original sheet having fine irregularities formed on at least one surface thereof, a step of forming an ink image on the irregularity forming surface of the original sheet, a transparent member and a light source The original sheet in which the ink image is formed on the transparent member of the flash device having a lamp,
A step of fixing and holding the ink image forming surface facing the transparent member, and laminating a transfer sheet having a light reflection layer and a heat-sensitive ink layer on the original sheet fixed and held by the transparent member, Placing the recording paper in close contact with the heat-sensitive ink layer, and flashing the light source lamp in a state where the heat-sensitive ink layer is pressed against the recording paper by the transparent member of the flash device to form the original sheet. Transferring a portion of the thermal ink layer corresponding to an ink image to the recording paper. 2. The thermal transfer method according to claim 1, wherein the original sheet has fine irregularities on only one side or both sides. 3. The ink image formed on the original sheet according to claim 1, wherein the ink image of the original is transferred to the original sheet by irradiating a light beam, or is electrostatically copied, printed by a thermal printer, and a writing instrument. A thermal transfer method characterized by being formed by any one of handwriting or the like or a plurality thereof. 4. The thermal transfer method according to claim 3, wherein the ink image is formed on one side or both sides of the original sheet on which fine irregularities are formed on both sides. 5. A case body having a light source chamber and a power supply chamber, a light source lamp disposed in the light source chamber, a light reflector disposed on the back side of the light source lamp, and a light reflector facing the light reflector. The provided transparent member, a power supply device for flashing the light source lamp housed in the power supply chamber, a translucent original sheet having fine irregularities formed on at least one surface, and the original sheet A holding member for fixedly holding the transparent member, a light reflecting layer and a thermal ink layer, the light reflecting layer is detachably attached to the case body across the transparent member facing the transparent member, A thermal transfer device comprising: a transfer sheet disposed between an original sheet and a recording sheet.