KR20170100364A - Method of improving abrasion resistance of overlay layer for protecting a thermal transfer printing surface - Google Patents

Method of improving abrasion resistance of overlay layer for protecting a thermal transfer printing surface Download PDF

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Publication number
KR20170100364A
KR20170100364A KR1020160022841A KR20160022841A KR20170100364A KR 20170100364 A KR20170100364 A KR 20170100364A KR 1020160022841 A KR1020160022841 A KR 1020160022841A KR 20160022841 A KR20160022841 A KR 20160022841A KR 20170100364 A KR20170100364 A KR 20170100364A
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South Korea
Prior art keywords
thermal transfer
overlay layer
card
overlay
temperature
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KR1020160022841A
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Korean (ko)
Inventor
권오종
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주식회사 에스아이디허브
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Priority to KR1020160022841A priority Critical patent/KR20170100364A/en
Publication of KR20170100364A publication Critical patent/KR20170100364A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/38—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for embossing, e.g. for making matrices for stereotypes
    • B41J3/385—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for embossing, e.g. for making matrices for stereotypes of plates, e.g. metal plates, plastic cards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/14—Multicolour printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/26—Printing on other surfaces than ordinary paper
    • B41M1/30—Printing on other surfaces than ordinary paper on organic plastics, horn or similar materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/12—Transfer pictures or the like, e.g. decalcomanias
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0041—Digital printing on surfaces other than ordinary paper
    • B41M5/0064—Digital printing on surfaces other than ordinary paper on plastics, horn, rubber, or other organic polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/34—Multicolour thermography
    • B41M5/345—Multicolour thermography by thermal transfer of dyes or pigments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/30—Embodiments of or processes related to thermal heads
    • B41J2202/35—Thermal printing on id card
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
    • B41M2205/40—Cover layers; Layers separated from substrate by imaging layer; Protective layers; Layers applied before imaging

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electronic Switches (AREA)

Abstract

The present invention relates to a method for improving the abrasion resistance of an overlay layer for protecting a thermal print surface, comprising the steps of: using a thermal transfer ribbon having a thermal transfer ribbon having a dye and protective overlay formed on the lower surface of a PET film base, A method of printing an identification card, comprising the steps of: (a) placing an identification card having an image or text printed on one side thereof on the thermal transfer printer; (b) moving the thermal transfer ribbon of the thermal printer to align a protective overlay to be positioned on the upper surface of the identification card; (c) aligning the thermal transfer head so as to be spaced apart from the upper surface of the thermal transfer ribbon in a preheated state at a preheat temperature; (d) moving a state in which the lower surface of the thermal transfer head is in close contact with the upper surface of the thermal transfer ribbon to form an overlay layer on the upper surface of the ID card, Forming a reinforcing overlay layer and a general overlay layer to laminate; (e) separating the thermal transfer head from the thermal transfer ribbon, and then removing the ID card and slowly cooling the card at room temperature, so that an image or text printed on one side of the ID card can be stored for a long period of time have.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of improving the abrasion resistance of an overlay layer for protecting a thermal transfer printing surface,

The present invention relates to a method for improving wear resistance of an overlay layer for thermal transfer printing surface protection.

In the ID card printer market, not only ID cards printed text and photo images on general PVC cards and polyester PVC cards, but also abrasion resistance (abrasion resistance) on a member card printed with text or barcode information Basically it is a big issue. This is one of the technical / business elements that is basically required in the card printing industry.

Korean Registered Patent No. 1308536 (Registered on Mar. 9, 2019, titled as "re-transfer color printer of instant direct heating type") is a re-transfer color printer which comprises card transfer means for transferring a card, A print ribbon feed roller on which a rolled-up print ribbon is installed, a print ribbon take-up roller on which the print ribbon on which printing has been performed is wound, a transfer film feed roller on which the intermediate transfer film wound in a roll form is installed, A printing head which is disposed at a crossing point of a conveying path of the printing ribbon and the intermediate transfer film and which is moved toward the printing roller side opposed to print the printing layer of the printing ribbon on the overlay layer of the intermediate transfer film, And a conveying roller which is disposed on a conveying path of the card and which transfers the overlay layer of the intermediate transfer film which has passed through the print head to the surface of the card, And the thermal transfer head for stacking is lowered to press the overlay layer of the intermediate transfer film so as to be coated on the card, and when the coating is completed, the overlay layer is pressed again A rear case having a pair of side plates connected to the upper case and aligned with the rotation axis of the conveying roller, and a head lifting unit configured to raise the rear side of the thermal transfer head, And a heating element fixing member coupled to a front surface of the rear case and provided with a heating element; The head lifting unit includes a lifting bracket coupled to the upper case, a lifting bracket coupled to the lifting and lowering bracket for moving the lifting and lowering bracket vertically A cam driving shaft installed to rotate the elevating cam, a pair of supporting brackets provided on the elevating bracket such that an opening is formed at the center, a pressing member vertically movably provided between the pair of supporting brackets, And an elastic member provided on a bottom portion of the pressing member.

Such a conventional technique has a problem in that the process of re-transferring the overlay layer of the intermediate transfer film to the card is not performed by a heating roller indirectly heated by a heater as in the prior art, It is possible to perform the re-transfer process of the card quickly without waiting time at low power, but there is a problem that the wear of the overlay layer can not be improved due to the use of the card.

Referring to FIGS. 1 and 2, in the conventional printing method of an ID card printer, a special dye applied to the dye sublimation ribbon 30 is applied to the upper surface of a PVC ID card 10 by a thermal transfer head Printing head 50 is transferred to the upper front surface of the card to print a monochrome pattern such as a text character or a bar code or to print a figure such as a portrait or a background photograph.

Here, the thermal transfer (dye sublimation) ribbon 30 comprises a PET film base 31, a dye and protective overlay 33 applied to the lower surface of the PET film base 31, And a back coating layer 35 formed on the upper surface of the protective overlay 33. Since the dye and protective overlay 33 shown in FIG. 1 is after the image IM and the text TX are already printed, to be.

Generally, YMCKO ribbons are used for printing, which are yellow, magenta, cyan, and black, which mainly consist of three primary colors, black, which prints mainly text and bar codes, and overlay As shown in FIG. The overlay layer is a key coating technology that protects the prints, and protects the cardholder from spreading or changing color when he or she is touched by hand, pressed by another object, or scratched. Also, discoloration due to oxidation and discoloration due to slight light are prevented.

However, the overlay layer OL shown in FIG. 2 is damaged when there is frequent friction and pressure such as repetitive actions taken out of the wallet and affects the overall printing quality. Therefore, one of the major functions of the printer manufacturer is the abrasion resistance of the overlay layer. As a national demand with a particularly harsh environment, India, the Middle East and South American countries are mainly dealing with the verification of abrasion resistance, and even in the case of Iran, overlay layers are transferred even when printing a single black (K = Black). Although the overlay layer is important to the actual user, all the existing printer manufacturers have almost the same abrasion resistance and do not present any problems.

The reason for this is that most printer manufacturers use the same physical overlay as the DNP company's ribbon, so use the same or similar thermal head (50) according to DNP's quality policy manual and use the same overlay transfer method This is because the company recognizes the range of functions it possesses as a limit without providing any room for improvement. Therefore, additional laminating equipment and consumables have been added to compensate for this.

On the other hand, there are separate domestic ribbons and printers, but domestic printers are also optimized for ribbons provided by DNP in Japan, and domestic ribbons are applied. .

SUMMARY OF THE INVENTION It is an object of the present invention, which is created to solve the above-described problems, to provide a color image forming apparatus and a color image forming method, The present invention also provides a method for improving the wear resistance of an overlay layer for thermal transfer printing surface protection that can partially improve the abrasion resistance of an image transferred to a cyan color and a black color transferred text or a barcode.

It is an object of the present invention to provide a method of printing an ID card using a thermal transfer printer having a thermal transfer ribbon having a dye and a protective overlay formed on a lower surface of a PET film base and a thermal transfer head, Placing an ID card having an image or text printed on one side thereof on the thermal transfer printer; (b) moving the thermal transfer ribbon of the thermal printer to align a protective overlay to be positioned on the upper surface of the identification card; (c) aligning the thermal transfer head so as to be spaced apart from the upper surface of the thermal transfer ribbon in a preheated state at a preheat temperature; (d) moving a state in which the lower surface of the thermal transfer head is in close contact with the upper surface of the thermal transfer ribbon to form an overlay layer on the upper surface of the ID card, Forming a reinforcing overlay layer and a general overlay layer to laminate; (e) removing the thermal transfer head from the thermal transfer ribbon, then removing the ID card and slowly cooling the thermal transfer head at room temperature, wherein the preheating temperature (占 폚) of the thermal transfer head in step (c) Wherein the temperature of the thermal print head is in a range of 50 to 60% of a maximum temperature of the thermal head, and when the image or text of the ID card of the step (d) is transferred, And the remaining portion is transferred at a preheating temperature (占 폚), and the curing heating temperature (占 폚) of the thermal transfer head is 75 to 80% of the maximum temperature of the thermal transfer head. Can be achieved by a method for improving wear resistance of a protective overlay layer.

Preferably, the protective overlay thickness of the thermal transfer ribbon of the present invention is 1.5 to 1.8 μm, and the area of the image or text is less than 70% of the area of the ID card.

Preferably, the thickness of the reinforced overlay layer of the present invention is 20 to 50% of the thickness of the conventional overlay layer.

Preferably, step (h) is further included between step (d) and step (e) of the present invention, wherein step (H) And forming a second hardened overlay layer, wherein the second hardened overlay layer is transferred while the temperature of the thermal head is at a hardening heating temperature (占 폚).

Preferably, the method further comprises (K) between step (d) and step (e) of the present invention, wherein step (K) Forming a second overlay layer and forming a third overlay layer on a top surface of the overlay layer, wherein the second and third overlay layers are formed on the top surface of the overlay layer, Is transferred in a state of being transferred.

The present invention has the effect of preserving the printed image or text on one side of the ID card for a long period of time.

1 and 2 are cross-sectional views illustrating a conventional thermal transfer printing method.
3 is a cross-sectional view illustrating a step of improving wear resistance of an overlay layer for protecting a thermal transfer print surface according to an embodiment of the present invention.
4 is a cross-sectional view illustrating an overlay layer-formed ID card according to another embodiment of the present invention.
5 is a cross-sectional view illustrating an overlay layer-formed ID card according to another embodiment of the present invention.

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

A method for improving the wear resistance of the overlay layer for protecting the thermal transfer printing surface of the present invention will be described with reference to FIG. The method for improving the wear resistance of the overlay layer for protecting the thermal transfer printing surface according to the present invention preferably proceeds continuously after the image (IM) or text (TX) is printed on one side of the ID card (10).

(a) Preparing an ID card and preparing for transcription

An ID card 10 is provided on a thermal transfer printer (not shown) to print an image IM or text TX. Here, the image (IM) or text (TX) printing process of the ID card 10 using the thermal printer is a well-known process, and therefore, a detailed description thereof will be omitted. It is to be noted that the ID card 10 is generally made of PVC, but it is not limited thereto and various synthetic resin materials can be used.

The image (IM) or text (TX) is printed in color or black ink.

The image IM or the text TX printed on the upper surface of the ID card 10 is preferably printed at a position at least 3 to 5 mm away from the edge of the ID card 10. [ This is because the overlay layer OL transferred to the upper surface of the image IM or text TX is exposed to the atmosphere when the image IM or the text TX touches the edge of the ID card 10 .

The thermal transfer ribbon 30 is then moved so that the protective overlay 33 is positioned on the top surface of the ID card 10. The thermal transfer ribbon 30 includes a PET film base 31, a dye and protective overlay 33 applied to the lower surface of the PET film base 31, (Back Coating Layer) 33. The thermal transfer ribbon 30 applied to this embodiment is in the form of a conventional roll wound on an unwinder (not shown) and a rewinder (not shown).

The thermal transfer head (50) is arranged to be spaced apart from the upper surface of the thermal transfer ribbon (30) in a preheated state. The preheating temperature of the thermal transfer head 50 is 50 to 60% of the maximum temperature of the thermal transfer head 50 and the hardening heating temperature of the thermal transfer head 50 is 75 to 80% Temperature (° C).

For example, if the maximum temperature of the thermal transfer head 50 is 100 占 폚, the preheating temperature is 50 to 60 占 폚, and the hardening heating temperature is 75 to 80 占 폚.

The preheating temperature of the thermal transfer head 50 according to the prior art is the same as the preheating temperature of the present embodiment.

(b) Overlay transfer and partial curing

The overlay layer OL is formed on the upper surface of the ID card 10 while the lower surface of the thermal transfer head 50 is in close contact with the upper surface of the thermal transfer ribbon 30, ) Is transferred to the printed upper surface, it is heated to the hardening heating temperature, and the other upper surface is transferred to the preheating temperature.

As a result, the upper portion of the image IM or text TX is divided into a reinforced overlay layer PSA-I (PSA-T) and a normal overlay layer OL-1. And a portion where the image IM or the text TX is not formed is formed as a general overlay layer OL-1.

Here, the thickness of the reinforced overlay layer (PSA-I) (PSA-T) is preferably 20 to 50% of the thickness of the general overlay layer OL-1. When the thickness of the reinforcing overlay layer (PSA-I) (PSA-T) is thicker than the thickness of the general overlay layer OL-1, there is a disadvantage that the abrasion resistance is excellent but the impact resistance is lowered.

(c) slow cooling

After the thermal transfer head 50 is detached from the thermal transfer ribbon 30, the ID card 10 on which the reinforced overlay layer PSA-I (PSA-T) and the general overlay layer OL-1 are formed is removed After completion of the work, it is slowly cooled at room temperature.

Technical support of output program software

In order to implement the present invention, it is necessary to manually and automatically set the space of the image (IM) and the text (TX), which are partially pre-printed at the time of outputting, to perform partially enhanced printing.

① Partial Enhancement Print command of black (K) print space

In the card output program, when black (K) printing such as text and bar code is set, unlike the general output method, the output signal is sent to a separate channel which is different from the image output. Therefore, since the interval set by the user in the input part of the output program or the format set according to the form is already defined in the program, it is set as a section condition for the partial enhancement print command and a margin of 1.5 to 2 mm Setting.

② Partial enhancement print command for yellow, magenta, cyan print space

As with the black (K) method above, all images made up of yellow, magenta, and cyan are set by the user in the output program or because the defined interval is already defined in the program , It is set as a section condition for the partial enhancement print command, and a margin of about 1.5 to 2 mm is set based on the edge portion of the section.

Application scope of the present invention

(1) The technique of the present invention corresponds to a case where an image and a text are partially printed on the face of a PVC card in an ID card printer. In the case of partial reinforcement (image or text) thermal transfer, about 70% or more of the total area of the thermal transfer ribbon is partially reinforced printing , The thermal transfer ribbon shrinks excessively, which may cause the ribbon to slip at a speed during printing or cause the ribbon to break. Therefore, it is desirable that the partially reinforced thermal transfer of the overlay layer be set to an area of less than about 70% of the total area of the PVC card. Also, in general ID card printing, about 30% to 50% of the total area of the PVC card is printed, so that it can be used in a practical manner.

(2) It is preferable to use a ribbon having a thickness of 1.5 to 1.8 탆 for the protective overlay 33 of the thermal transfer ribbon 30.

Abrasion resistance test

The abrasion resistance test of the overlay layer by the method of the present invention and the conventional method was performed as follows.

- Test printer: Zebra P330i

- Ribbon consumables:

   1 DNP YMCKO (Comparative Example 1), Domestic YMCKO (Comparative Example 2)

   (2) Domestic YMCKO adjusted by the present invention (overlay thickness: 1.5 to 1.8 占 퐉) (Example)

- Durability Tester: Taber 5135 (speed 60m / s)

Figure pat00001

Referring to Table 1, in the case of the ribbons of the present embodiment, the overlay layer was not worn for 40 minutes and the durability was stable. However, in the case of using the ribbon of Comparative Examples 1 and 2, Minute, it was found that the abrasion resistance of the overlay layer by the method of the present invention was excellent.

4, another embodiment of the present invention is a method of forming a second reinforced overlay layer (PSA) on an upper surface of an ID card 10 and a top surface of a toughened overlay layer (PSA-I) (PSA-T) 3, the detailed description or illustration thereof will be omitted.

Here, the second reinforced overlay layer (PSA) is formed by the same method as the method of forming the reinforced overlay layer (PSA-I) (PSA-T).

Referring to FIG. 5, another embodiment of the present invention is similar to the embodiment of FIG. 4 except that a third overlay layer OL-3 is formed on the upper surface of the overlay layer OL- And therefore, detailed description and illustration thereof will be omitted.

Here, the third reinforced overlay layer OL-3 is formed by the same method as that of forming the reinforced overlay layer PSA-I (PSA-T) and the second reinforced overlay layer OL-2. The third reinforced overlay layer (OL-3) is previously disclosed in which only one overlay panel is formed using a separate ribbon separate from the YMCK panel since the properties of the overcoat layer can not be different from that of the YMCK panel.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

10: ID card
30: Thermal ribbon
31: PET film base 33: overlay
35: back coated side
50: Thermal transfer head

Claims (5)

A method of printing an ID card using a thermal transfer printer having a thermal transfer ribbon having a dye and a protective overlay formed on a lower surface of a PET film base and a thermal transfer head,
(a) placing an ID card having an image or text printed on one side thereof on the thermal transfer printer;
(b) moving the thermal transfer ribbon of the thermal printer to align a protective overlay to be positioned on the upper surface of the identification card;
(c) aligning the thermal transfer head so as to be spaced apart from the upper surface of the thermal transfer ribbon in a preheated state at a preheat temperature;
(d) moving a state in which the lower surface of the thermal transfer head is in close contact with the upper surface of the thermal transfer ribbon to form an overlay layer on the upper surface of the ID card, Forming a reinforcing overlay layer and a general overlay layer to laminate;
(e) detaching the thermal transfer head from the thermal transfer ribbon, and then removing the ID card and slowly cooling at room temperature,
The preheating temperature (占 폚) of the thermal transfer head in the step (c) is a temperature which is 50 to 60% of the highest temperature of the thermal transfer head,
In the case of transferring the image or the portion printed with the text of the ID card in the step (d), the temperature of the thermal transfer head is transferred in the state of the curing heating temperature (占 폚), and the remaining part is transferred to the preheating temperature Wherein the curing heating temperature (占 폚) of the thermal transfer head is 75 to 80% of a maximum temperature of the thermal transfer head.
The method according to claim 1,
Wherein the protective overlay thickness of the thermal transfer ribbon is from 1.5 to 1.8 μm and the area of the image or text is less than 70% of the area of the ID card.
The method according to claim 1,
Wherein the thickness of the reinforced overlay layer is 20-50% of the thickness of the conventional overlay layer.
The method according to claim 1,
Further comprising (H) between the step (d) and the step (e)
Wherein step (H) further comprises forming a second reinforced overlay layer on the top surface of the ID card and on the top surface of the toughened overlay layer,
Wherein the second reinforcing overlay layer is transferred while the temperature of the thermal transfer head is at a hardening heating temperature (占 폚).
The method according to claim 1,
Further comprising (K) between the step (d) and the step (e)
Wherein step (K) comprises forming a second reinforced overlay layer on the upper surface of the ID card and on the upper surface of the toughened overlay layer, and forming a third overlay layer on the upper surface of the overlay layer,
Wherein the second and third overlay layers are transferred while the temperature of the thermal head is a hardening heating temperature (占 폚).
KR1020160022841A 2016-02-25 2016-02-25 Method of improving abrasion resistance of overlay layer for protecting a thermal transfer printing surface KR20170100364A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102585438B1 (en) 2022-09-26 2023-10-10 주식회사 알타이아이앤씨 Clear patch ribbon for thermal transfer printing and preparation method of the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102585438B1 (en) 2022-09-26 2023-10-10 주식회사 알타이아이앤씨 Clear patch ribbon for thermal transfer printing and preparation method of the same
WO2024071834A1 (en) * 2022-09-26 2024-04-04 주식회사 알타이아이앤씨 Protective patch ribbon for thermal transfer printer, and manufacturing method therefor

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