WO2022186567A1

WO2022186567A1 - Direct heating device for card printer

Info

Publication number: WO2022186567A1
Application number: PCT/KR2022/002850
Authority: WO
Inventors: 김창범; 박종철; 박찬수; 김태호; 김환조; 이승환
Original assignee: 아이디피 (주)
Priority date: 2021-03-02
Filing date: 2022-02-28
Publication date: 2022-09-09
Also published as: KR102431852B9; KR102431852B1

Abstract

The present invention relates to a direct heating device for a card printer, wherein the direct heating device can be applied to a card printer for transfer printing. More specifically, the present invention relates to a direct heating device for a card printer, wherein the direct heating device can rapidly heat up to a temperature at which retransfer is possible and thus improve printing convenience and reduce energy costs, and exhibits excellent adhesion to a material to be printed and excellent thermal transfer characteristics, and thus can improve printing quality. The direct heating device for a card printer according to the present invention comprises: a heating roller case; and a heating roller means installed in the heating roller case. The heating roller means includes: a roller support part having a roller shaft having both ends installed in the heating roller case; a heating roller part inserted into the roller shaft; and a power terminal part for supplying power to the heating roller part.

Description

Direct heating heating device for card printer

The present invention relates to a direct heating heating device for a card printer that can be applied as a retransfer device or a laminating device in a card printer. And it relates to a direct heating type heating apparatus for a card printer that can not only enable rapid printing without waiting time, but also improve print quality due to excellent adhesion and thermal transfer properties to a printed object.

In general, various types of cards, such as credit cards, transportation cards, membership cards, medical care cards, identification cards, etc. It is manufactured through a laminating process in which a lamination patch (also called a coating film, etc.) made of a transparent material is attached by a laminating device to protect it.

The conventional card printer printing method, which prints by directly attaching a printing ribbon to the surface of these various cards, has a limitation in that it cannot print up to the edge of the plastic card.

As a card printer to solve this drawback, a retransfer printer that prints using an intermediate transfer web or an intermediate transfer film (hereinafter referred to as an 'intermediate transfer film') in addition to a printing ribbon has been developed.

For example, in the retransfer printer, as shown in FIG. 1, a printing ribbon is not directly in contact with a plastic card to print, but an intermediate transfer film is subjected to a printing process by a printing ribbon and then an intermediate transfer is performed through a lamination process (retransfer). An image printed on a film is laminated on a plastic card, which is disclosed in Korean Patent Registration No. 10-0768730.

1, in the conventional retransfer color printer, the color film supplied from the color film supply spool 50 passes through a plurality of guide rollers and transfer rollers by the driving force of the

motors

50A and 52A, while the color film winding spool ( 52), and the intermediate transfer film wound on the intermediate transfer film supply roller 80 passes through a plurality of guide rollers and transfer rollers by the driving force of the

motors

80A and 84A, while the intermediate transfer film winding roller 84 ) to be wrapped around the

The color film and the intermediate transfer film transferred in this way cross between the print head 56 and the printing platen 96 in the printing station 34, and the image is printed through primary transfer to the intermediate transfer film, and then The intermediate transfer film is transferred toward the intermediate transfer film take-up roller 84 to laminate an overlay layer of the intermediate transfer film on which the image is printed on the plastic card through secondary transfer at the lamination station 40 .

On the other hand, Republic of Korea Patent Registration No. 10-1308536 discloses a re-transfer color printer of the instantaneous direct heating method as shown in Figure 2a.

The retransfer color printer according to Patent Registration No. 10-1308536 has a structure similar to that of Patent Registration No. 10-0768730 and performs the printing process in the same manner. ), a printing ribbon supply roller 30, a printing ribbon winding roller 40, a transfer film supply roller 50, a transfer film winding roller 60, a print head 70, a transfer means 80, and a head lifting means (90) is provided.

The transfer means 80 has a configuration for transferring the overlay layer of the intermediate transfer film b that is disposed on the transfer path of the card and has passed through the print head 70 to the surface of the card, as shown in FIG. 2B, the card ( c) is arranged to face the lower conveying roller 211 provided for the conveyance and is composed of a thermal transfer head for lamination that is instantaneously heated by the applied power.

The thermal transfer head for lamination includes a head case 81 and a heating element 82 installed so that a heating surface is exposed below the head case 81 and heated to a high temperature instantaneously when power is supplied. Here, the heating element 82 is configured as a planar heating element having a right-angled shape capable of discharging heat while being heated instantaneously and rapidly when power is applied.

However, the aforementioned heating element 82 has a disadvantage in that retransfer failure due to poor contact occurs because the heating element 82 is a hard material when there are fine irregularities in the plastic card in the process of being in contact with the plastic card.

In recent years, a rotating roller type heating roller device (not shown) has been proposed as a transfer means 80 as a method to solve this disadvantage, and has a structure in which a lamp or a heater is provided as a heat source inside the roller.

However, in this conventional heating roller device, the transfer is performed after the roller is heated by the heat emitted from a heating device such as a lamp or a heater separately installed inside the roller, rather than a method in which the heating roller itself is directly heated, so the surface temperature of the roller In order to indirectly heat to a high temperature suitable for transfer (approximately 160 to 200 ℃), power consumption is large, and it takes about 3 to 10 minutes for heating, so the standby time (warm-up time) is too long, which causes serious inconvenience in use. have.

In addition, the conventional heating roller device described above has disadvantages in that the power of the heater must always be maintained in an on state unnecessarily even for intermittent transfer, so energy is wasted heavily and peripheral components are deteriorated.

The present invention has been proposed in view of the above, and it can be quickly heated to a temperature that can be transferred or laminated, so that it is possible to improve the convenience of printing and reduce energy costs, as well as excellent adhesion and thermal transfer properties to the object to be printed. An object of the present invention is to provide a direct heating heating device for a card printer to improve print quality.

Another object of the present invention is to provide a direct heating type heating device for a card printer, which is configured as a rotary heating element while stably supplying power to improve the stability and durability of operation.

In order to achieve the above object, a direct heating type heating device for a card printer according to the present invention is a direct heating type heating device for a card printer, comprising: a heating roller case; and a heating roller means installed in the heating roller case, wherein the heating roller means includes: a roller support part having a roller shaft having both ends installed in the heating roller case; a heating roller unit inserted into the roller shaft; and a power terminal unit for supplying power to the heating roller unit.

The roller support unit may include a roller connecting member connected to both ends of the roller shaft and a binding member connected to the heating roller case for binding.

The heating roller part may be configured to include a base roller having both ends connected to the roller connecting member and having the heating part formed on an outer surface thereof, and a heating part having electrode parts formed on both sides of the heating layer.

Preferably, the power terminal unit includes: a rotating terminal member connected to the roller connecting member so as to be electrically in close contact with the electrode unit; a rotation terminal pressing member for fixing the rotation terminal member to the roller connecting member; and a fixed terminal member that is electrically in close contact with the rotary terminal member to supply power.

The rotary terminal member includes a disc part having a shaft inlet hole, a plurality of contact terminal parts protruding inwardly from the periphery of the disc part and having locking protrusions formed at the ends, and an elastic terminal part protruding toward the fixed terminal member in the disc part. can be

The fixed terminal member may include a fixed terminal plate in which a shaft inlet hole is perforated and a fixed terminal connecting portion extending to the fixed terminal plate.

Preferably, the roller connecting member includes a disk-shaped body having a shaft inlet hole, a binding member seating groove recessed inside the disk-shaped body so that the rotation terminal pressing member is seated, and the rotation terminal at a boundary with the binding member seating groove portion. Doedoe having a structure having a separation preventing protrusion protruding so that the pressing member is not separated, the separation preventing protrusion may be formed to be spaced apart so that an inlet into which the contact terminal is inserted is provided.

On the other hand, the elastic terminal part may be formed in a structure having a terminal leg that is cut to have a free end on the disc part and protrudes obliquely to the outside, and a contact protrusion curved in an arc shape at an end of the terminal leg.

In addition, a plurality of the elastic terminal portions may protrude alternately in the direction of protrusion so that the electric connection relationship is stably maintained during the forward and reverse rotation of the heating roller portion.

The heating unit may include a cushion layer laminated on the outer surface of the heating layer, and a Teflon layer laminated on the outer surface of the cushion layer.

According to the direct heating type heating device for a card printer according to the present invention, the heating roller part of the heating roller means for performing the transfer is directly heated, and it is possible to quickly heat up to a temperature at which re-transfer is possible, thereby improving the convenience of printing. There is an effect of not only saving energy costs because a preheating process is unnecessary, but also improving the printing quality because the heating roller part has flexibility and has excellent adhesion and thermal transfer characteristics to the object to be printed.

In addition, the direct heating type heating device for a card printer according to the present invention maintains a stable electrical connection relationship with the fixed terminal member even when the rotating terminal member is rotated together with the heating roller unit, so the stability and durability of operation can be improved. There is this.

1 to 2b are views for explaining a direct heating type heating device for a conventional card printer;

3A and 3B are perspective views for explaining a direct heating type heating device for a card printer according to an embodiment of the present invention, wherein FIG. 3A shows a shape shown on one side, and FIG. 3B shows a shape shown on the other side.

4 is an exploded perspective view showing a part of a direct heating heating device for a card printer according to an embodiment of the present invention;

5 is a cross-sectional view for explaining a heating roller means of a direct heating type heating device for a card printer according to an embodiment of the present invention;

6A to 6C are views for explaining a heating roller means of a direct heating type heating device for a card printer according to an embodiment of the present invention. An exploded perspective view, Figure 6c is a cross-sectional view of the heating roller means.

7 is an exploded perspective view illustrating the heating roller part of the direct heating type heating device for a card printer according to an embodiment of the present invention;

8 is a perspective view showing a rotating terminal member of a direct heating type heating device for a card printer according to an embodiment of the present invention.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings 3a to 8, and the same reference numerals are given to the same components in FIGS. 3a to 8 to be described.

On the other hand, in each drawing, a detailed description of a configuration that can be easily recognized by a person skilled in the art from the general technology, and an action and effect thereof will be simplified or omitted. In addition, since the present invention is characterized by a direct heating type heating device for a card printer, the related parts will be mainly shown and described, and the description of the remaining parts will be simplified or omitted.

And, the direct heating type heating device for a card printer according to the present invention can be applied as a thermal transfer means of a general card printer, but in this embodiment, an example applied to a card printer for re-transfer will be described.

3A and 3B are perspective views for explaining a direct heating type heating device for a card printer according to an embodiment of the present invention, wherein FIG. 3A shows a shape shown on one side, and FIG. 3B shows a shape shown on the other side. 4 is an exploded perspective view showing a part of the direct heating type heating device for a card printer according to an embodiment of the present invention, and FIG. 5 is a heating roller means of the direct heating type heating device for a card printer according to an embodiment of the present invention. It is a cross-sectional view for explanation.

3A to 5, a direct heating type heating device for a card printer according to an embodiment of the present invention includes a heating roller case (1) and a heating roller means (2) installed in the heating roller case (1). Doedoe, the heating roller means 2 is characterized in that it is configured to enable rapid heating, and to improve adhesion and thermal transfer characteristics with the object to be printed.

The heating roller case (1) includes a main body part (11) installed inside the retransfer card printer, and a roller installation part (12) disposed under the main body part (11) and provided with a heating roller means (2). ), a terminal assembly bracket 13 installed in an assembly hole provided on the side between the main body part 11 and the roller installation part 12 and to which a fixing terminal member 233 to be described later is fixed is provided.

The main body part 11 is a plate-shaped front plate 111, a pair of side plates 112 orthogonally formed on both sides of the front plate 111, and a sensor bracket 113 formed on one surface of the front plate 111. , a sensor cover 114 assembled to perform a function of protecting and fixing the sensing means 3 installed on the sensor bracket 113 is provided.

The roller installation part 12 is a horizontal plate 121 connected to the lower end of the side plate 112 so that a roller rotation space in which the heating roller means 2 is rotatably installed is provided. It is composed of a shaft binding plate 122 protruding from the shaft, and the shaft binding plate 122 has a shaft hole 122a into which a bushing 213a inserted into the roller shaft 81 of the heating roller means 2 is inserted. have.

The detection means 3 is composed of a temperature sensor that detects the heating temperature of the heating roller means 2, but in addition, an optical sensor capable of detecting the printing start point of the intermediate transfer film (not shown) is installed. can be

6A to 6C are views for explaining a heating roller means of a direct heating type heating device for a card printer according to an embodiment of the present invention, wherein FIG. 6A is a perspective view of a main part of the heating roller means, and FIG. 6B is a heating roller means 6c is a cross-sectional view of the heating roller means. 7 is an exploded perspective view illustrating a heating roller part of a direct heating type heating device for a card printer according to an embodiment of the present invention, and FIG. 8 is a rotating terminal member of a direct heating type heating device for a card printer according to an embodiment of the present invention. is a perspective view showing

5 to 8, the heating roller means 2 is installed under the heating roller case 1 to transfer the printed layer of the intermediate transfer film to the plastic card through the thermal transfer process. A support unit 21 , a heating roller unit 22 , and a power terminal unit 23 are provided.

The roller support unit 21 includes a rod-shaped roller shaft 211 having both ends installed in the heating roller case 1, a roller connecting member 212 connected to both ends of the roller shaft 211, and a heating roller case (1). It is composed of a binding member 213 connected for binding with.

The roller connecting member 212 is a disk-shaped body 212a having a shaft inlet hole formed therein, a binding member seating groove portion 212b that is recessed to have a step inside the disk-shaped body 212a so that the rotary terminal pressing member 232 is seated; and a separation prevention protrusion 212c protruding at the boundary with the binding member seating groove portion 212b to prevent the rotation terminal pressing member 232 from being separated from the seated state. A plurality of protrusions are spaced apart from each other at regular intervals so that the inlet 212d into which the close contact terminal portion 231b is inserted is provided.

The binding member 213 is assembled to the shaft hole 122a of the shaft binding plate 122 and includes a bushing 213a having insertion holes to be inserted into both ends of the roller shaft 211, a heating roller part 22 and a power terminal part ( 23) is composed of an E-ring installed on the roller shaft 211 so as not to be separated.

The heating roller part 22 has a generally cylindrical shape having a hollow part, and is provided with a base roller 221 and a heating part 222 .

The base roller 221 is inserted into the roller shaft 211, both ends thereof are connected to the roller connecting member 212, and performs the function of a base on which the heating part 222, the cushion layer and the Teflon layer can be laminated on the outer surface. It is configured in the form of a pipe made of thin aluminum material so that it can be heated quickly.

The heating part 222 is formed in a substantially cylindrical shape to be coupled to the outer surface of the base roller 221 and the electrode parts 222b are formed on both sides of the central heating layer 222a, and the electrode part 222b is the heating layer 222a. The contact terminal portion 231b of the rotary terminal member, which will be described later, is in close contact with the portion receiving power for heating of connected.

For example, the heat generating unit may be composed of a known cylindrical heat generating film commonly referred to as a fuser fixing film, and the fuser film has a property of being heated to 200 degrees or more within a few seconds when power is applied. .

In addition, a cushion layer (reference numeral omitted) and a Teflon layer (reference numeral omitted) are sequentially stacked on the heating layer 222a. The cushion layer is stacked on top of the heating layer 222a and performs a buffering action so that a stable antistatic action is achieved even when there are fine irregularities on the hard plastic card. Preferably, the cushion layer is formed of a coating layer having a thickness of about 0.6 mm by a material commonly called silicone rubber so as to be flexible in response to an external force.

The Teflon layer is a thin film layer laminated on the outer surface of the cushion layer and is formed of a Teflon tube (PFA Tube).

In addition, the heating part 222 may be configured in a manner of forming a heating layer (not shown) and an electrode part (not shown) on the outer surface of the base film layer (not shown) formed in a cylindrical shape. Here, the heating layer is formed of a conductive material for heating, such as a polymer containing carbon, so as to generate heat by electric resistance when power is supplied, and the electrode part is formed of a conductive material for heating, such as copper or nickel, to apply power to the heating layer. A conductive material for an electrode having a low electrical resistance value may be laminated by deposition or the like.

Meanwhile, the power terminal unit 23 is a component for supplying power to the heating roller unit 22 , and includes a rotating terminal member 231 , a rotating terminal pressing member 232 , and a fixed terminal member 233 .

The rotating terminal member 231 is configured to be connected to the roller connecting member 212 so as to be electrically in close contact with the electrode part 222b, and is formed of a conductive metal and has a shaft inlet hole 231d. It includes a plurality of contact terminal portions 231b protruding inwardly at the periphery of the portion 231a and having locking protrusions formed at the ends, and an elastic terminal portion 231c protruding inward from the disk portion 231a.

The elastic terminal part 231c includes a terminal leg 231c1 that is cut to have a free end on the disk part 231a and protrudes obliquely to the outside, and a contact protrusion 231c2 curved in an arc shape at the free end of the terminal leg 231c1. It is formed in a structure with

In addition, the elastic terminal portion 231c protrudes in pairs so that the electric connection relationship is stably maintained during the forward and reverse rotational operation of the heating roller portion 22 , the protrusion directions of which are alternated with each other.

The fixed terminal member 233 is configured to be electrically in close contact with the rotating terminal member 231 to supply power, and is formed of a thin conductive metal plate and has a fixed terminal plate 233a having a shaft inlet hole 233c punched therein, and a fixed terminal plate 233a. ) is extended in a straight line and consists of a fixed terminal connection portion 233b having a fastening hole 233d perforated at the upper end.

The rotation terminal pressing member 232 is a binding member for fixing the rotation terminal member 231 to the roller connecting member 212, and has an elastic cutout to apply a pressing force to the upper surface of the contact terminal portion 231b of the rotation terminal member 231. It consists of rings.

Hereinafter, the operation of the direct heating type heating device for a card printer according to an embodiment of the present invention will be briefly described.

First, the re-transfer part of the re-transfer card printer that laminates and prints the image printed on the intermediate transfer film (not shown) on the card by the direct heating heating device for the card printer (not shown, see Fig. 2a, transfer of Fig. 2a) The means 80 is installed in the installed portion).

As described above, when the retransfer card printer is operated in a state where the direct heating type heating device for the card printer is mounted, the card (not shown) is disposed to face the heating roller means 2 and the lower transport roller (not shown, FIG. 2a ) (refer to reference numeral 211 of )). At this time, the heating roller case 1 is lowered by a head driving device (not shown).

As such, when the heating roller case 1 is lowered, the heating roller unit 22 is lowered and the intermediate transfer film is in direct contact with the card surface to perform thermal transfer, so the image printed on the intermediate transfer film is transferred from the card surface to the card. printed on the surface.

At this time, since the heating roller unit 22 has a cushion layer, when it comes into contact with the card surface, the contact area is deformed flat and makes surface contact while forming a small fixing nip. This is improved and stable printing can be performed.

On the other hand, looking more closely at the operation process of the heating roller means 2 described above, when the card passes between the lower conveying rollers (not shown) disposed to face each other on the lower side after being lowered by the head driving device (not shown), each other By the action, the heating roller part 22 is rotated idle. Even in this rotation process, the heating roller part 22 is stably supplied with power from the outside by the above-described power terminal part 23, so that the heating part 222 is heated. action is performed

In the power transfer process, when power is supplied to both fixed terminal members 233 through a power line (not shown), the rotating terminal member through the elastic terminal portion 231c in contact with the fixed terminal plate 233a of the rotating terminal member 231 (231). At this time, as shown in FIG. 8, the elastic terminal part 231c has a structure in which a contact protrusion 231c2 curved in an arc shape is formed at the free end of the terminal leg 231c1, and is elastically in close contact with the fixed terminal member 233. In addition, since the protruding directions are alternately protruded as a pair, the electrical connection relationship can be stably maintained even during the forward and reverse rotational operations of the heating roller unit 22 .

Subsequently, the power transferred to the rotating terminal member 231 is transferred to the electrode part 222b of the heating part 222 to which the contact terminal part 231b is in contact, and the heating layer 222a electrically connected thereto is heated by electrical resistance. .

On the other hand, when the printing operation is completed by the above-described action and the heating roller case 1 including the heating roller means 2 is raised under the control of the control unit, one retransfer process is completed, and this operation is repeated. This enables continuous printing.

Although the configuration and operation of the direct heating type heating device for a card printer according to an embodiment of the present invention described above has been described, this is an example and those of ordinary skill in the art will not depart from the technical spirit of the present invention. It will be appreciated that substitutions and variations of some of the above-described embodiments are possible.

Therefore, it should be understood that the protection scope of the present invention extends to the invention described in the claims and their equivalents.

The direct heating type heating device for a card printer according to the present invention can rapidly heat up to a temperature that can be re-transferred or laminated, so that it is possible to improve printing convenience and to print quickly without waiting time. Since it can improve the stability and durability of operation, it can be applied as a direct heating heating device for various printers in addition to card printers.

Claims

In the direct heating type heating device for card printer,

heating roller case; and a heating roller means installed in the heating roller case, wherein the heating roller means includes: a roller support part having a roller shaft having both ends installed in the heating roller case; a heating roller unit inserted into the roller shaft; and a power terminal unit for supplying power to the heating roller unit;

The roller support portion includes a roller connecting member connected to both ends of the roller shaft and a binding member connected for binding with the heating roller case,

The heating roller part includes a base roller having both ends connected to the roller connecting member, and a heating part coupled to an outer surface of the base roller and having electrode parts formed on both sides of the heating layer,

The power terminal unit, a rotating terminal member connected to the roller connecting member so as to be electrically in close contact with the electrode unit, a rotating terminal pressing member for fixing the rotating terminal member to the roller connecting member, and supplying power to the rotating terminal member It includes a fixed terminal member that is electrically in close contact so as to

The rotary terminal member includes a disc part having a shaft inlet hole, a plurality of contact terminal parts protruding inwardly from the periphery of the disc part and having a locking protrusion formed at the end, and an elastic terminal part protruding toward the fixed terminal member in the disc part A direct heating heating device for card printers.
According to claim 1,

The fixed terminal member includes a fixed terminal plate in which a shaft inlet hole is perforated and a fixed terminal connecting portion extending to the fixed terminal plate,

The roller connecting member includes a disk-shaped body having a shaft inlet hole formed therein, a binding member seating groove recessed inside the disk-shaped body to seat the rotation terminal pressing member, and the rotation terminal pressing member at a boundary with the binding member seating groove portion. A direct heating type heating device for a card printer, characterized in that it has a structure having a separation preventing protrusion that protrudes so as not to be separated, and wherein the separation preventing protrusion is formed to be spaced apart to provide an inlet into which the contact terminal is inserted.
3. The method of claim 2,

The elastic terminal part is cut to have a free end in the disc part and is formed in a structure having a terminal leg that protrudes obliquely to the outside and a contact protrusion curved in an arc shape at an end of the terminal leg,

A direct heating type heating device for a card printer, characterized in that a plurality of the elastic terminal portions protrude alternately with each other so that an electrical connection relationship is stably maintained during forward and reverse rotation of the heating roller portion.
4. The method of claim 3,

The heating unit direct heating type heating device for a card printer, characterized in that it comprises a cushion layer laminated on the outer surface of the heating layer, and a Teflon layer laminated on the outer surface of the cushion layer.