JP4641156B2 - Magnetic card manufacturing method, transfer sheet manufacturing method - Google Patents

Description

The present invention relates to a manufacturing how such a magnetic card. In particular is directed to how to attach a picture by transferring the pattern of the surface from the transfer sheet, a pattern was formed by an electrophotographic method to transcription sheet, then, it relates to a manufacturing method of transferring the card surface.
Therefore, the technical field to which the present invention relates relates to the field of manufacture and use of magnetic cards.

  Portable bill-sized magnetic cards are widely used as cash cards, credit cards, bank cards, employee ID cards, transportation cards, and the like. Since these cards are carried by individuals and used for a long period of time, they are required to be durable and beautifully painted on the surface.

Various methods have been conventionally used for painting on the card surface.
As a direct printing method, the core sheet (two front and back) that is the inner sheet of the card substrate and the oversheets on both sides are integrated by hot-pressing, and then the magnetic tape transferred to the oversheet is concealed After performing concealing printing, pattern printing, and glossy overprinting, a method of hot pressing again is employed.
For printing, offset printing and silk screen printing are used, and a plate making process is required and a press twice is required, so that it is mainly used for manufacturing a large number of cards.

As a transfer method, the core sheet (two sheets on the front and back sides), the front and back oversheets on which magnetic tape has been transferred, and a transfer sheet on which a pattern has been printed are temporarily bonded, and then hot-pressed to thermally bond the substrates. In addition, a method of transferring the pattern on the transfer sheet to the oversheet has been performed. This transfer method has an advantage in the process that requires only one hot press.
However, even in the case of the transfer method, it is necessary to print a pattern on the transfer sheet, and there is a problem that a plate making / press plate process and a main machine printing process are required.

  Here, the direct printing method and the transfer method will be described in more detail with reference to the drawings. FIG. 4 is a diagram for explaining a conventional direct printing method, and FIG. 5 is a diagram for explaining a transfer method.

  In the case of the direct printing method, as shown in FIG. 4, first, a hot press for integrating four layers of the front surface side core sheet 11, the back surface side core sheet 12, the front surface side oversheet 13, and the back surface side oversheet 14. I do. The magnetic tapes 8 and 9 are previously transferred to the front and back oversheets 13 and 14. Further, the back side core sheet 12 is printed with a ground color print 12c on the back side and instructions for use, etc. Although not shown, the front side core sheet 11 is also printed with alignment marks and the like. Is. These printings are performed by offset or silk screen printing.

  In general, a hard vinyl chloride sheet, a polyethylene terephthalate (PET) sheet, or a PET-G sheet is used as a material for the card substrate. In order to finish the entire thickness of the card base 10 to a prescribed 0.76 ± 0.08 mm, the front and back core sheets 11 and 12 are white sheets having a thickness of about 0.28 mm, and the front and back oversheets 13 and 14 are 0.00. Usually, a transparent sheet having a thickness of about 10 mm is used.

  After the hot press, printing of a concealing layer 13c for concealing the magnetic tape 8 on the surface side oversheet 13 surface, a pattern 13p, and a glazing overprint 13g is sequentially performed. The masking layer 13c is often formed by silk screen printing, and the pattern 13p and the gloss overprint 13g are performed by offset or silk screen printing. In this case, since the smoothness and gloss of the card are insufficient in the surface state of the glazing overprint 13g, it is usual to perform hot press again after printing.

Also in the case of the transfer method, as shown in FIG. 5, the card base material having the same quality and the same thickness is used as in the direct printing method.
First, four layers of the front side core sheet 11, the back side core sheet 12, the front side oversheet 13, and the back side oversheet 14, and the transfer on which the concealing layer 26, the pattern layer 24, the anchor layer 23, and the release layer 22 are printed. A sheet (PET base material) 2 is temporarily attached, and then a step of hot pressing is performed to integrate the sheets.
After the hot press, the concealing layer 26, the pattern layer 24, the anchor layer 23, and the release layer 22 are transferred to the surface side oversheet 13, thereby concealing the magnetic tape 8 and expressing a beautiful pattern, and the release layer 22 is protected. Also serves as a layer.

Magnetic tapes 8 and 9 are preliminarily transferred to the front and back oversheets 13 and 14, and the ground color printing 12 c and usage instructions are printed on the back side core sheet, and the alignment marks are also printed on the front side core sheet 11. Are printed in the same manner as in the case of direct printing.
In the case of the transfer method, there is an advantage that only one hot press process is required, but there is a problem that the base film 21 of the transfer sheet is peeled and removed last, and cannot be reused.

Although there are various prior arts regarding the method of painting a card, no prior art closely related to the present application can be found. The following is a list of patent documents that are more or less related to the present application.
Patent Document 1 describes that an image is formed with a sublimable dye on the surface of a card substrate, but in the case of a dye image, there is a problem that the light resistance of the pattern is weak. Patent Document 2 describes that a pattern is provided by direct printing on a small lot of magnetic cards. However, in the case of direct printing, there is a problem that the production of a printing plate is indispensable. Patent Document 3 describes a “magnetic card and its manufacturing method” in which a pattern is provided on the front and back of the card by a transfer method. Patent Document 4 relates to “card and its painting method”, but proposes the characteristics of the receiving layer film on the card surface.

Japanese Patent Laid-Open No. 6-8649 JP 2003-346104 A JP-A-5-92684 Japanese Patent Application No. 2002-334557

As described above, in the conventional manufacturing method using the magnetic card transfer method, a lot of time is required for preparation and plate change, such as registration, color change, and washing, at the time of offset printing on the transfer sheet. Moreover, after completion of the school, it is necessary to make a new plate and press again, and it is impossible to print variable information. In addition, although a pattern forming method by sublimation transfer has been partially implemented as in Patent Document 1, sublimation transfer is based on a dye image, and the light resistance of the pattern sometimes becomes a problem.
Therefore, the present invention relates to a manufacturing method for transferring a pattern to a magnetic card surface by a transfer method, transferring a pigment image without depending on a dye image, and manufacturing a transfer sheet that does not involve plate making, printing plate, and machine printing processes. The magnetic card transfer method has been studied, and the magnetic card manufacturing method, transfer sheet, and transfer sheet manufacturing method of the present invention have been completed.

The first of the gist of the present invention for solving the above-mentioned problems is that the transfer sheet for painting transfer is hot-pressed on a card substrate temporary stack and is painted on the card surface as follows (1), ( A method of manufacturing a magnetic card having the step 2). (1) A pattern made of color toner is formed on an anchor layer surface of a film substrate having a release layer and an anchor layer in order by an electrophotographic printer, and then a magnetic tape concealing layer is printed on the pattern surface by silk screen printing. Step of preparing a transfer sheet for transfer, (2) After the core sheet and the magnetic tape transferred oversheet as a core layer, and temporarily stacked so that the magnetic tape of the oversheet is the outermost surface on the outside, The magnetic tape surface is placed in such a manner that the concealing layer of the transfer sheet for painting transfer prepared in (1) is in contact with the surface, and then is integrated by pressing with heat.
In the above, if the color toner contains organic or inorganic particles having a particle diameter of 400 nm or less, the durability of the pattern can be increased.

A second aspect of the present invention for solving the above problems is a method of manufacturing a transfer sheet for painting transfer at the time of manufacturing a magnetic card, wherein a color document is supplied to an electrophotographic printer, and a pattern based on the color document is provided. Is formed on a substrate film surface having a release layer, and a magnetic tape concealing layer is printed on the pattern surface by silk screen printing.

A third aspect of the present invention for solving the above problems is a method for manufacturing a transfer sheet for painting transfer at the time of manufacturing a magnetic card, wherein color digital data is transmitted to an electrophotographic printer, and the color digital data is converted into the color digital data. A transfer sheet manufacturing method comprising: forming a pattern based on a base film surface having a release layer, and printing a magnetic tape concealing layer on the pattern surface by silk screen printing.

(1) The manufacturing process of the magnetic card is shortened and the delivery time can be shortened. In addition, it is possible to manufacture a card having variable data for each side. Can handle small lot orders.
(2 ) The transfer sheet manufacturing method of the present invention can form a picture using a color original or digital data, and does not go through the steps of manufacturing and printing a printing plate by a plate making and printing plate process as in the prior art. Since the transfer sheet can be produced without using a printing plate, the production time can be greatly shortened.

The present invention relates to a method for manufacturing a magnetic card, a method of manufacturing a transcription sheet, the relates, below, with reference to the drawings, first, and sequentially illustrating the transfer sheet.
Figure 1 shows a cross section of the transcription sheet, FIG 2 is a flowchart showing the process of manufacturing the transfer sheet, FIG. 3 is a sectional view showing a state of transferring a pattern to a magnetic card, a.

  As shown in FIG. 1, the transfer sheet 2 is provided with a release layer 22 on the surface of the base film 21, and an anchor layer 23 is formed on the release layer. The anchor layer 23 functions to increase the adhesion between the release layer 22 and the toner pattern layer 24. In order to keep the release layer 22 on the card side after transferring the pattern, it is preferable to provide the layer. The layers so far correspond to the base material 20 of the transfer sheet 2, and the base material 20 is supplied to the electrophotographic printer to provide the toner picture layer 24. The release layer 22 may not be provided when the base film 21 itself is easily peelable. However, after transfer, the release layer 22 is transferred to the card surface side to function as a protective layer. It is preferable because durability can be improved. The release layer 22 is formed to a thickness of 2 to 3 μm or less.

The material of the release layer 22 is different in material selection depending on whether it adheres to the base film 21 side at the time of peeling and peels off on the toner pattern layer 24 side. It is necessary to select a material that does not adhere firmly to the material film 21 but maintains an adhesive force that does not cause natural peeling. Usually, it is selected from various materials such as vinyl chloride-vinyl acetate copolymer, ethylene-vinyl acetate copolymer, ionomer resin, nitrified cotton-based resin, cyclized rubber-based resin, and acrylic resin. If necessary, a plasticizer, a stabilizer and the like are added, and a solvent or a diluent is added and kneaded sufficiently.
For the anchor layer 23, a polyvinyl chloride resin, a polyvinyl acetate resin, a vinyl chloride-vinyl acetate copolymer resin, an acrylic resin, a polyester resin, a polyurethane resin, a polyamide resin, a modified rubber, or the like is used. be able to. Since this layer is offset-printed, the thickness becomes a slight thickness of 1 to 2 μm or less.

  The color toner picture layer 24 is formed by an electrophotographic printer, and a picture layer made of a color toner containing a color pigment is printed thereon. Various commercially available products can be used for the color toner for electrophotography. Some color toners contain a dye, but light resistance is required for the pattern of the magnetic card. Therefore, the colorant is preferably a toner mainly composed of a pigment. The toner contains carbon in black, but other toners appear to use organic pigments.

Here, image formation of electrophotography will be briefly described.
Electrophotographic development methods include a wet development method and a dry development method. A method using organic dyes, additives and binder resin dispersed in isoparaffinic petroleum solvent is a wet development method, and a method using organic pigments and additives dispersed in a binder resin and pulverized as a powder is dry development. This powder is called toner. Today, the dry development method is the mainstream. In some cases, a toner used in the dry development method is used by mixing a magnetic material such as a ferrite called a carrier in addition to an organic dye, an additive, and a binder resin. In such a two-component system, the toner is charged by contact with the carrier.

Organic dyes for color toners are required to be charged in addition to the properties as colorants. Organic dyes have various functional groups in the dye skeleton, but generally they are positively charged when they have an electron-donating substituent in the molecular structure, and are easily negatively charged when they have an electron-withdrawing substituent. In addition, the chargeability can be controlled by the number of these functional groups, and this property is actively used.
In addition, (1) the transparency of the toner is high in order to superimpose multiple colors, (2) the affinity with the binder resin is high, and the melt miscibility is good, (3) against heat and light. Properties such as stability and excellent bleed resistance, (4) good spectral reflectance characteristics, and (5) good environmental resistance characteristics are required. Since these characteristics are taken into consideration, it is possible to form a pattern having higher durability than a sublimable dye image or the like.

  Organic dyes include dyes and pigments, but dyes are superior in transparency and coloring power. In the case of a pigment, if the particle size is large, transparency and coloring power are inferior. In order to increase transparency, the particle diameter of the color toner needs to be shorter than the shortest visible light wavelength (400 nm).

  As organic dyes for color toners, yellow benzidine, monoazo, disazo, diphenylamine, azomethine, rhodanine and pyridone dyes are known. As for magenta, xanthene, imidazole, rhodamine, quinacridone, perylene, thioindigo, anthraquinone, and monoazo are known. For cyan, copper phthalocyanine is mainly used, but other phthalocyanine pigments, triphenylmethane lake pigments, aniline blue, and anthraquinone pigments are also known.

  Toner charging is basically possible with only binder resin and carrier, but the addition of a charge control agent is indispensable for the toner to be charged quickly and uniformly and not dependent on environmental changes such as humidity. It is. As a charge control agent in a black printing toner, nigrosine aniline black is used for positive charging, and azo chromium metal complex is used for negative charging. Since these are all colored, a colorless charge control agent is used for the color toner. For this positive charge, imidazolium salts and pyridinium salts are known, and for a negative charge, boron derivatives, zinc complexes, salicylic acid derivatives and the like are known.

  On the surface of the toner pattern layer 24, a normal silver-colored hiding layer 26 for hiding the magnetic tape is provided. Adhesion between the pattern layer 24 and the hiding layer 26 increases adhesion between the toner pattern layer 24 and the hiding layer 26 A layer 25 is preferably provided.

The adhesive layer 25 is a layer provided when the concealing layer 26 has a weak adhesion to the toner picture layer 24, and performs the same function as the anchor layer 23. The material used is the same as that of the anchor layer 23. In this case, since silk screen printing is performed in the same process as the masking layer, the thickness is about 1 to 8 μm.
The concealing layer 26 conceals the brown color of the magnetic tape previously transferred to the oversheet, and an ink kneaded with a white titanium pigment (TiO ₂ ) or aluminum powder with high concealing power is used.

Since the final transfer sheet is used for transferring a 24-sided or 16-sided multi-sided sheet of a wallet size card (ID-1 type), it is a sheet-like sheet. Accordingly, printing and coating after the anchor layer 23 are performed in the state of a sheet.
As the base material film 21, a heat resistant base material having a thickness of about 100 μm to 200 μm is used. Usually, a polyethylene terephthalate (PET) film is preferably used.

Next, a method for manufacturing a transfer sheet will be described with reference to the flowchart of FIG.
The release layer 22 is provided on the entire surface of the base film 21, and is coated on the continuous base film surface wound in a roll shape (S1). The release layer 22 is coated by gravure printing or roll coating as described above.
After application of the release layer 22, the base film 21 is cut into a single sheet (S2). Thereafter, the anchor layer is printed by offset printing (S3).

The formation of the pattern layer with the pigment-containing color toner by the electrophotographic printer can take two methods. The first method is a normal printing method in which a multi-sided (or one side) color original is prepared as usual, and the color original is copied (copied) onto the anchor layer coated substrate 20. is there. In this case, it is possible to use an original for only one side instead of a multi-sided original. Even for an original document for one side, an electrophotographic printer usually has a repeated copy function, so that it can be output as a transfer sheet with a multi-sided design (S4).
Since recent electrophotographic printers are provided with a CCD image sensor, a document given to the electrophotographic printer is read by the CCD image sensor, and three or four colors (cyan, magenta, yellow, black) are read. Is separated into colors. The resolution can be up to about 600 dots / 25.4 mm. The color-separated electrical signals of the respective colors are exposed to the photosensitive plate (or drum) as laser beam optical signals to form an electrostatic image.

The second method is a method in which color digital data obtained by photographing a photograph or a subject is transmitted directly to an electrophotographic printer via a personal computer (PC) and a network. The transmitted color digital data is temporarily stored in the memory, and then an image can be output on the surface of the base material 20 having the peeling layer 22 and the anchor layer 23 according to a predetermined format (S5). Personal information for each card can also be attached and output.
The transmission of image data can employ a transmission method of connecting to a Windows machine using TCP / IP (LPD) via a server or not. A connection via the Internet is also possible. In these methods, it is possible to transmit data from a remote place, and in the case of color digital data obtained by photographing a subject, there is no need to print a photograph.

As is well known in the art of electrophotographic printer image formation, (1) charging of a photoreceptor (photosensitive drum) with a charging roll, (2) exposure of the photoreceptor with laser light, (3) development with toner, (4 ) Transfer to a printing medium, and (5) fixing.
Even if there is only one photosensitive drum, it is possible to perform color copying by alternately exposing each color, but in the case of high speed, four photosensitive drums are used. There are various models for each company, such as when the photosensitive drum is installed horizontally or vertically, but any model may be used. Exposure to the photosensitive drum is performed by a laser unit and a polyhedral mirror.

Fixing is a process of fixing the color toner to the printing material by applying heat (about 150 to 180 ° C.) and pressure. If the printing material is a PET sheet, the fixing is sufficient. It has heat resistance. However, polyvinyl chloride and polyethylene sheets are insufficient.
The electrophotographic printer has image quality adjustment functions such as brightness / saturation / contrast, etc., and a function to finely adjust the toner density of black / cyan / magenta / yellow. A reproducible method of production is also possible.
In recent years, electrophotographic printers with high functions have been developed for on-demand printing, but such models may be used.

  A concealing layer 26 for concealing the magnetic tape 8 is printed on the surface of the toner image layer 24 by electrophotography (S7). It is preferred to coat layer 25 (S6). Since the binder layer made of vinyl chloride / vinyl acetate / vinyl alcohol copolymer is usually used for the masking layer 26, it is preferable to form a thin film layer made only of the resin on the adhesive layer 25 as well.

The concealing layer 26 conceals the brown color of the magnetic tape 8 that has been previously transferred to the oversheet, and is an ink obtained by kneading the binder resin with a white titanium pigment (TiO ₂ ) or aluminum powder with high concealing power. Is used. The substance is made of aluminum powder, but is commonly called “silk silver” printing. The adhesive layer 25 and the hiding layer 26 are preferably obtained by silk screen printing in order to obtain a high hiding power. The printing thickness of the concealing layer 26 after drying is about 1 to 4 μm. The transfer sheet of the present invention is completed through the above steps.

Next, the manufacturing method of the magnetic card of this invention is demonstrated.
When transferring a picture to a magnetic card, as shown in the cross-sectional view of FIG. 3, first, two layers of core sheets 11 and 12, and oversheets 13 and 14 to which magnetic tapes 8 and 9 have been transferred in advance on both surfaces are provided. Then, a laminated body 10k temporarily prepared so that the magnetic tapes 8 and 9 are on the outer surface is prepared. The backsheet 5 is printed on the oversheet 14 by silk screen or offset printing. This process is the same as in the case of the conventional transfer painting method, and as the material for the card substrate, generally a hard vinyl chloride sheet, a polyethylene terephthalate (PET) sheet, or a PET-G sheet is used. Yes. In order to finish the entire thickness of the card base 10 to the specified 0.76 ± 0.08 mm, the front and back core sheets 11 and 12 are white sheets of about 0.28 mm thickness, and the front and back oversheets 13 and 14 are 0.10 mm thick. The same applies to the use of a transparent sheet of a degree.

In order to transfer the pattern to the temporary stack 10k, the transfer sheet 2 manufactured as described above is placed in contact with the transfer surface of the magnetic tape 8 of the oversheet 13, and two metal press mirrors are placed. Between the face plates P, the temporary stacked laminate 10k is inserted and hot pressing is performed. Although not shown, a transfer sheet may be used on both sides to conceal the magnetic tape 9 on the oversheet 14 side.
The hot press conditions are, for example, a temperature of 100 to 200 ° C., a pressure of 15 to 30 kg / cm ² , a time of 5 to 25 minutes, and a preferred specific example is a temperature of 150 ° C., a pressure of 25 kg / cm ² and a time of 15 minutes. Thereafter, while maintaining the pressure, for example, it takes 20 minutes or more to cool to room temperature as slowly as possible.

  After cooling, by peeling off the base film 21 of the transfer sheet 2, the release layer 22 remains on the toner pattern layer 24 side, and a magnetic card with excellent surface gloss can be obtained. There is no need to repress.

<Manufacture of transfer sheet>
A release layer 22 was formed by gravure coating a release ink on a 150 μm thick polyethylene terephthalate (PET) film (A4 size), and an anchor layer 23 was offset printed thereon to produce a transfer sheet substrate 20 ( (See FIG. 1).

  The pattern layer 24 was formed by copying the color pattern onto the transfer sheet base material 20 using an electrophotographic printer [Docucenter Color 400 (manufactured by Fuji Xerox Co., Ltd.)] using a four-sided card pattern as a document. As the pigment-based toner, a dedicated toner cartridge [K] [C] [M] [Y] (product codes CT200168 to CT200191) manufactured by Fuji Xerox Co., Ltd. was used. In addition, a dedicated drum cartridge [A1] [A2] [A3] [A4] (product code CT350107) manufactured by Fuji Xerox Co., Ltd. was used as the photoreceptor.

  On the surface of the pattern layer 24, an adhesive layer 25 and a concealing layer 26 were printed by silk screen printing to complete the transfer sheet 2. For the adhesive layer 25, a vinyl chloride-based medium [“VAHS medium” manufactured by Showa Ink Co., Ltd.] was used, and for the concealing layer 26, about 10% by mass of silver paste (aluminum powder) was added to the same medium. A thing was used. The thickness of the masking layer 26 was 5 to 6 μm.

<Picture transfer by transfer sheet>
As the card core sheets 11 and 12, a white hard vinyl chloride sheet having a thickness of 0.28 mm is used, and as the oversheets 13 and 14, the magnetic tapes 8 and 9 have been transferred, and the transparent vinyl chloride having a thickness of 0.10 mm. A sheet was used. The core sheet 12 has been printed with a back pattern, and the core sheet 11 has already been printed with alignment marks and the like.
After placing the previously prepared transfer sheet 2 on the magnetic card substrate temporary stack 10k so that the concealing layer 26 is in contact with the surface of the magnetic tape 8, a set of materials is placed between the metal press mirror plate P. Inserted and hot pressed. The pressing conditions were a temperature of 150 ° C., a pressure of 25 kg / cm ² , and a time of 15 minutes (see FIG. 3). As a result, a magnetic card 1 having a beautifully transferred pattern was obtained.

<Manufacture of transfer sheet>
A release film 22 was formed by gravure coating a release ink on a 150 μm thick PET film (A4 size), and an anchor layer 23 was offset printed thereon to produce a transfer sheet substrate 20 (see FIG. 1). .
A color pattern was copied to the transfer sheet base material 20 by an electrophotographic printer [Docucenter Color 400 (Fuji Xerox Co., Ltd.)] to form a pattern layer 24. The pattern was transferred from PC (Windows XP) to Card 1 The color digital data for the surface was formed by a method of transmitting together with four pieces of personal information. The transfer sheet 2 in which the same card pattern with four sides and each personal information was output to the A4 size transfer sheet substrate 20 was completed.

<Picture transfer by transfer sheet>
The pattern transfer to the magnetic card was performed using the same card substrate as in Example 1 and under the same pressing conditions. As a result, a magnetic card 1 having a beautifully transferred pattern was obtained.

  The magnetic cards obtained in Example 1 and Example 2 have embossability, chemical resistance specified by 5.8 of JISX6305, dimensional stability specified by 5.10, etc. It withstood the test conditions of adhesion and tackiness.

Is a diagram illustrating a transcription sheet cross section. It is a flowchart which shows the manufacturing process of a transfer sheet. It is sectional drawing which shows the state which transfers a pattern to a magnetic card. It is a figure explaining the conventional direct printing system. It is a figure explaining the conventional transfer system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Magnetic card 2 Transfer sheet 5 Back surface picture 8, 9 Magnetic tape 10 Card base | substrate 11,12 Core sheet 13,14 Oversheet 20 Base material 21 Base film 22 Peeling layer 23 Anchor layer 24 Picture layer 25 Adhesive layer 26 Concealment layer P Press mirror plate

Claims (4)

A method for producing a magnetic card having the following steps (1) and (2), wherein a transfer sheet for painting transfer is hot-pressed on a card substrate temporary stack and is painted on the card surface.
(1) A pattern made of color toner is formed on an anchor layer surface of a film substrate having a release layer and an anchor layer in order by an electrophotographic printer, and then a magnetic tape concealing layer is printed on the pattern surface by silk screen printing. Preparing a transfer sheet for transfer,
(2) The core sheet and the oversheet onto which the magnetic tape has been transferred are temporarily stacked with the core sheet as the central layer and the oversheet magnetic tape is on the outermost surface, and then the magnetic sheet is A process of placing the concealing layer of the transfer sheet for painting transfer prepared in step in contact, and then pressing and integrating them with a hot press, 2. The method of manufacturing a magnetic card according to claim 1, wherein the color toner contains an organic or inorganic pigment having a particle diameter of 400 nm or less. A method for producing a transfer sheet for painting transfer at the time of manufacturing a magnetic card, wherein a color document is supplied to an electrophotographic printer, a pattern based on the color document is formed on a substrate film surface having a release layer, and the pattern surface A method for producing a transfer sheet, comprising printing a magnetic tape concealing layer thereon by silk screen printing. A method of manufacturing a transfer sheet for painting transfer at the time of manufacturing a magnetic card, wherein color digital data is transmitted to an electrophotographic printer, and a pattern based on the color digital data is formed on a substrate film surface having a release layer, A method for producing a transfer sheet, wherein a magnetic tape concealing layer is printed on a picture surface by silk screen printing.