KR920010636B1 - Thermal head - Google Patents

Thermal head Download PDF

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KR920010636B1
KR920010636B1 KR1019890001600A KR890001600A KR920010636B1 KR 920010636 B1 KR920010636 B1 KR 920010636B1 KR 1019890001600 A KR1019890001600 A KR 1019890001600A KR 890001600 A KR890001600 A KR 890001600A KR 920010636 B1 KR920010636 B1 KR 920010636B1
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South Korea
Prior art keywords
heat
heat transfer
heat generating
thermal head
generating portion
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KR1019890001600A
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Korean (ko)
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KR900012765A (en
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하야미 스미야마
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신꼬오덴끼 가부시끼가이샤
이노마다 시게오
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Priority to KR1019890001600A priority Critical patent/KR920010636B1/en
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    • 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
    • B41J2/345—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 characterised by the arrangement of resistors or conductors
    • 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
    • B41J2/335—Structure of thermal heads

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Abstract

내용 없음.No content.

Description

써멀헤드Thermal head

제1도는 본 발명의 한 실시예를 보여주는 평면도.1 is a plan view showing one embodiment of the present invention.

제2도는 제1도의 AA선 단면도.2 is a cross-sectional view taken along the line AA of FIG.

제3도는 종래의 써멀헤드(thermal head)를 보여주는 단면도.3 is a cross-sectional view showing a conventional thermal head.

제4도는 동 써멀헤드의 세부를 보여주는 평면도이다.4 is a plan view showing details of the thermal head.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings

1 : 기판 2 : 글래스 크로스(절연층)1 Substrate 2 Glass Cross (Insulation Layer)

7a : 발열부 C1,C2a-C4a,C2b-C4b : 절연재(절연부재를 구성한다)7a: heat generating portion C 1 , C 2 aC 4 a, C 2 bC 4 b: insulating material (constituting the insulating member)

5 : 내산화막6a : 내마모막(5,6a는 보호막을 구성한다)5: oxidation resistant film 6a: wear resistant film (5 and 6a constitute a protective film)

본 발명은 써멀프린타에 사용하기 적합한 써멀헤드에 관한 것이다.The present invention relates to a thermal head suitable for use in a thermal printer.

제3도는 종래의 써멀헤드를 보여주는 단면도이다.3 is a cross-sectional view showing a conventional thermal head.

이 도면에서 (1)은 산화 알루미늄제의 기판이며, 동기판(1)의 상면에는 글래스크로스층(2)이 적층되어 있다.In this figure, reference numeral 1 denotes a substrate made of aluminum oxide, and a glass cross layer 2 is laminated on the upper surface of the sync plate 1.

글래스크로스층(2)의 상면에는 발열 저항체(3)가 형성되어 있으며, 동 저항체(2)의 상면에는 일정의 거리를 두고 전극(4a,4b)이 형성되어 있다.The heat generating resistor 3 is formed on the upper surface of the glass cross layer 2, and the electrodes 4a and 4b are formed on the upper surface of the resistor 2 at a predetermined distance.

전극(4a,4b)과의 사이에 노출된 발열저항체(3)가 형성되어 있으며, 동 저항체(2)의 상면에는 일정의 거리를 두고 전극(4a,4b)이 형성되어 있다.The exothermic resistor 3 exposed between the electrodes 4a and 4b is formed, and the electrodes 4a and 4b are formed on the upper surface of the resistor 2 at a predetermined distance.

전극(4a,4b)과의 사이에 노출된 발열저항체(3)가 발열부(3a)로 되어 있다.The heat generating resistor 3 exposed between the electrodes 4a and 4b serves as the heat generating portion 3a.

또한 전극(4a,4b)중에서 한쪽이 접지되고 다른쪽이 도면에 표시되지 않은 급전 제어부[발열부(3a)에 전류를 흐르도록 하는 기능을 가진다]의 출력단에 접속되어 있다.In addition, one of the electrodes 4a and 4b is grounded and the other is connected to an output terminal of a power supply control section (having a function of causing a current to flow in the heat generating section 3a) not shown in the figure.

5는 내산화막이며, 전극(4a,4b)을 덮도록 형성되어 있다.5 is an oxidation resistant film and is formed so as to cover the electrodes 4a and 4b.

또, 내산화막(5)의 상면에는 내마모막(6)이 형성되어 있다. 내산화막(5)과 내마모막(6)은 보호막을 구성한다.Moreover, the wear resistant film 6 is formed in the upper surface of the oxidation resistant film 5. The oxidation resistant film 5 and the wear resistant film 6 constitute a protective film.

여기서 제4도는 상술한 써멀헤드의 세부를 보여주는 평면도이며, 이 도면에 제시된 바와 같이 발열부(3a)는 장방형으로 되어 있다.4 is a plan view showing the details of the thermal head described above, and as shown in this figure, the heat generating portion 3a has a rectangular shape.

이와 같이 구성된 써멀헤드에 있어서 발열부(3a)에 전류가 흐르면 동발열부(3a)의 전면이 균일하게 발열한다.In the thermal head configured as described above, when a current flows through the heat generating portion 3a, the entire surface of the same heat generating portion 3a generates heat uniformly.

이로인해 도면에 표시되지 않은 피전사용지에는 제4도의 파선(D)이 보여주는 형상의 돗트(점 : 인쇄되는 면적단위)인쇄가 행해진다.As a result, dots (dots: printed area units) printed in the shape shown by the broken line D in FIG.

그러나 써말프린타에 있어서 화상의 농도를 단계별로 조절(

Figure kpo00001
)을 표현하기 위해서는 인쇄되는 돗트의 크기를 제어하는 것이 바람직하나, 상술한 바와 같이 종래의 써멀헤드에 있어서는 발열부(3a)의 형상에 기초로 하는 형상만이 돗트인쇄가 가능하여다.However, in thermal printers, the image density can be adjusted step by step.
Figure kpo00001
It is preferable to control the size of the dot to be printed. However, as described above, in the conventional thermal head, only the shape based on the shape of the heat generating portion 3a can be dot printed.

본 발명은 상술한 사정을 감안한 것으로서 인쇄되는 돗트의 크기를 제어할 수가 있는 써멀헤드를 제공하는 것을 목적으로 하고 있다.In view of the above-described circumstances, an object of the present invention is to provide a thermal head capable of controlling the size of a dot to be printed.

상기 문제점을 해결키위해 본 발명은 기판의 한쪽의 면상에 절연층과 발열부와, 보호층이 순차적으로 적층되어 이루어지는 써멀헤드에 있어서 전술한 발열부에서 발생되는 발열량에 대응하는 면적까지 과열되는 전열부재를 해당 발열부의 위쪽에 설치하는 것을 특징으로 한다.In order to solve the above problems, the present invention provides a heat transfer that is overheated to an area corresponding to the heat generation amount generated in the above-described heat generating portion in a thermal head in which an insulating layer, a heat generating portion, and a protective layer are sequentially stacked on one surface of the substrate. The member is provided above the heat generating portion.

상기 구성에 의하면 발열부에서 발생한 발열량에 따라 전열부재의 과열되는 면적을 설정할 수가 있음으로 해당 발열부에 흘리는 전류의 통전시간 또는 그 진폭을 제어함으로 인해 전열부재의 과열범위를 설정할 수가 있다.According to the above configuration, the area of overheating of the heat transfer member can be set according to the amount of heat generated by the heat generation unit, and thus the overheating range of the heat transfer member can be set by controlling the energization time of the current flowing through the heat generation unit or its amplitude.

따라서 인쇄되는 돗트의 크기를 제어할 수가 있다.Therefore, the size of the dot to be printed can be controlled.

이하 도면을 참조하여 본 발명의 실시예에 대해 설명한다.Hereinafter, embodiments of the present invention will be described with reference to the drawings.

제1도는 본 발명의 한 실시예를 보여주는 평면도, 제2도는 제1도의 AA선 단면도이다.1 is a plan view showing an embodiment of the present invention, Figure 2 is a cross-sectional view taken along line AA of FIG.

또한 이들 도면에 있어서 전술한 제3도와 대응하는 부분에는 동일의 부호를 붙이고 그 설명은 생략한다.In addition, in these drawings, the same code | symbol is attached | subjected to the part corresponding to FIG. 3 mentioned above, and the description is abbreviate | omitted.

제1도에 있어서, 7은 발열저항체이며, 이 발열저항체(7)의 상면에 소정의 거리를 두고 전극(4a,4b)이 형성되어 있다.In FIG. 1, 7 is a heat generating resistor, and the electrodes 4a and 4b are formed in the upper surface of this heat generating resistor 7 by predetermined distance.

이들 전극(4a,4b)의 사이에 노출된 부분의 발열저항체(7)가 발열부(7a)로 되어 있다.The heat generating resistor 7 in the portion exposed between these electrodes 4a and 4b serves as the heat generating portion 7a.

또, 발열부(7a)는 그 폭 방향의 길이가 발열저항체(7)의 폭 방향의 길이보다 짧게 형성되어 있다.In addition, the length of the heat generating portion 7a is formed shorter than the length of the heat generating resistor 7 in the width direction.

부호 C1,C2a,C3a,C4a,C2b,C3b,C4b는 각각 알루미늄으로 형성된 전열재이다.Reference numerals C 1 , C 2 a, C 3 a, C 4 a, C 2 b, C 3 b, and C 4 b are heat transfer materials formed of aluminum, respectively.

전열제(C1)는 그 폭 방향의 길이가 발열부(7a)의 폭 방향의 길이와 일치하는 장방형으로 형성되어, 발열부(7a)의 중앙부분에 위치하도록 배치되어 있다.The heat transfer agent C 1 is formed in a rectangular shape whose length in the width direction coincides with the length in the width direction of the heat generating portion 7a, and is disposed so as to be located at the center portion of the heat generating portion 7a.

전열재(C2a,C2b)는 각각 평면이 “

Figure kpo00002
”자상으로 형성되어 전열재(C1)에서 소정거리 떨어져 동 전열재(C1)를 도면 좌우방향에서 끼우도록 배치되어 있다.The heat transfer materials (C 2 a, C 2 b) are each flat
Figure kpo00002
It is formed so as to be shaped so as to be spaced apart from the heat transfer material C 1 by a predetermined distance so as to sandwich the heat transfer material C 1 in the left and right directions of the drawing.

전열재(C3a,C3b)는 각각 평면이 “

Figure kpo00003
”자상으로 형성되어 전열재(C2a,C2b)에서 소정거리 떨어져 이들 전열재(C2a,C2b)를 도면 좌우방향에서 끼우도록 배치되어 있다.The heat transfer material (C 3 a, C 3 b) is each flat
Figure kpo00003
"Is formed in a stab is disposed so as to sandwich from the heat transfer material (C 2 a, C 2 b ) at a distance away from these heat-transfer material (C 2 a, C 2 b ) for drawing the left and right directions.

전열재(C4a,C4b)는 각각 평면이 “

Figure kpo00004
”자상으로 형성되어 전열재(C3a,C3b)에서 소정거리 떨어져 이것들 전열재(C3a,C3b)를 도면 좌우방향에서 끼우도록 배치되어 있다.The heat transfer material (C 4 a, C 4 b) has a flat plane, respectively.
Figure kpo00004
"Is formed in a stab is disposed so as to sandwich from the heat transfer material (C 3 a, C 3 b ) at a distance away from these heat-transfer material (C 3 a, C 3 b ) for drawing the left and right directions.

이들 전열재(C1,C2a~C4a,C2b~C4b)는 각각 제2도의 단면도에 제시하는 바와 같이 모두 동일한 두께로 내산화막(5)의 상면에 형성되어 있다.These heat transfer materials C 1 , C 2 a to C 4 a and C 2 b to C 4 b are each formed on the upper surface of the oxidation resistant film 5 with the same thickness as shown in the cross-sectional view of FIG. 2.

또, 이들 전열재(C1,C2a~C4a,C2b~C4b)는 전열부재를 구성한다.In addition, these heat transfer materials C 1 , C 2 a to C 4 a, C 2 b to C 4 b constitute a heat transfer member.

이어서 제2도에 있어서 (6a)는 전열재(C1,C2a~C4a,C2b~C4b)를 덮도록 형성된 내마모막이며, 이내마모막(6a)의 상면에는 전열재(C1,C2a~C4a,C2b~C4b)의 각개 사이의 중간선상이 계곡 밑바닥으로 이루어지는 V자모양의 절결부(切缺部)(8,8,…)가 형성되어 있다.Subsequently, in FIG. 2, (6a) is a wear resistant film formed to cover the heat transfer materials C 1 , C 2 a to C 4 a and C 2 b to C 4 b, and the upper surface of the inner wear film 6a is V-shaped cutouts (8, 8,...) In which the middle line between each of the heat transfer materials (C 1 , C 2 a to C 4 a, C 2 b to C 4 b) forms the bottom of the valley. ) Is formed.

또한 내산화막(5)과 내마모막(6a)은 보호막을 구성한다.In addition, the oxidation resistant film 5 and the wear resistant film 6a constitute a protective film.

이와 같이 형성된 써멀헤드에 있어서 발열부(7a)에 전류가 흐르면, 동 발열부(7a)의 전면이 균일하게 발열한다.When a current flows through the heat generating portion 7a in the thermal head thus formed, the entire surface of the heat generating portion 7a generates heat uniformly.

그리하여 발생한 발열량에 따라 전열재(C1,C2a~C4a,C2b~C4b)각각에 전해지는 범위가 전해진다.Thus, the range transmitted to each of the heat transfer materials C 1 , C 2 a to C 4 a and C 2 b to C 4 b is transmitted according to the amount of generated heat.

이 경우 각 전열재(C1,C2a~C4a,C2b~C4b)는 각각 그 면적과 발열부(7a)로부터의 거리에 따라 안쪽의 것일수록 단시간에 고온이 된다.In this case, each of the heat transfer materials C 1 , C 2 a to C 4 a, C 2 b to C 4 b becomes high temperature in a short time as the inner ones depend on the area and the distance from the heat generating portion 7a.

따라서 발열부(7a)에 흐르는 전류의 통전시간을 길게, 또는 전류의 진폭을 크게 함으로서 전열재 C1→C2a, C2b→C3a, C3b→C4a, C4b의 순으로 고온이 되며, 예를들면, 열전사식(熱轉寫式)의 프린터에 적용한 경우, 전사필름에 도포된 잉크도 각 전열재 C1,C2a~C4a,C2b~C4b가 고온이 되는 순서로 용해하는 범위가 확대되어 간다.Therefore, the heat conduction material C 1 → C 2 a, C 2 b → C 3 a, C 3 b → C 4 a, C 4 b by lengthening the energization time of the current flowing through the heat generating portion 7a or increasing the amplitude of the current. In the order of high temperature, for example, when applied to a thermal transfer printer, the ink applied to the transfer film is also transferred to each heat transfer material C 1 , C 2 a to C 4 a, C 2 b to C 4 b is going to be expanded in the range dissolved in the order that they are subject to high temperatures.

이 용융된 잉크는 피전사용지에 전사됨으로 전사되는 돗트도 서서히 커져간다.This melted ink is transferred to the paper to be used, and the dot to be transferred gradually increases.

이와 같이 발열부(7a)에 흐르는 전류의 통전시간 또는 그 진폭을 변화시킴으로 인해 인쇄되는 돗트의 크기를 제어할 수가 있다.In this way, the size of the printed dot can be controlled by changing the energization time of the current flowing through the heat generating section 7a or its amplitude.

따라서 돗트의 크기를 변경시킴으로 인해 농도 제조(단계별 조절)의 표현이 가능하게 된다.Therefore, by changing the size of the dot it is possible to express the concentration manufacturing (step adjustment).

감열식의 써멀프린터(열을 가함으로서 발색하는 감열용지를 사용하는 프린터)에 적용해도 마찬가지로 발열부에 흐르는 전류의 통전시간 또는 그 진폭을 변경함으로써 감열지가 발색하는 돗트의 크기를 제어할 수가 있다.Similarly, when applied to a thermal thermal printer (a printer using a thermal paper that develops color by applying heat), it is possible to control the size of the dot of the thermal paper by changing the energization time of the current flowing through the heat generating unit or its amplitude.

또, 상기 실시예에서는 전열재(C2a~C4a,C2b~C4b)를 각각 평면이 “

Figure kpo00005
”자상으로 형성했으나 C2a와 C2b, C3a와 C4b의 각조의 전열재를 일체로 형성한 환상으로 해도 좋다.In the above embodiment, the heat transfer material (C 2 a to C 4 a, C 2 b to C 4 b) is respectively flat.
Figure kpo00005
"May be formed with cuts, but the formation of the C 2 and a C 2 b, C 3 and a monograph of the heat conductive material of C 4 b integrally cyclic.

또 전열재(C1,C2a~C4a,C2b~C4b)를 각각 알루미늄으로 형성하였지만 기타 동, 은등 열전도성이 좋은 재료이면 좋다.The heat transfer material (C 1 , C 2 a to C 4 a, C 2 b to C 4 b) is formed of aluminum, but any material having good thermal conductivity such as copper and silver may be used.

또, 전열재(C1,C2a~C4a,C2b~C4b)를 각각 내산성화막(5)의 상면에 배치했으나 이들 전열재(C1,C2a~C4a,C2b~C4b)를 발열부(7a)에 접촉시키지 않으면 되고, 예를들면 내마모막(6a)의 상면에 배치해도 좋다.In addition, although the heat transfer materials C 1 , C 2 a to C 4 a and C 2 b to C 4 b were disposed on the upper surface of the acid resistant film 5, these heat transfer materials C 1 and C 2 a to C 4, respectively. a, C 2 b to C 4 b may not be brought into contact with the heat generating portion 7a, and for example, may be disposed on the upper surface of the wear resistant film 6a.

이상에서 설명한 바와같이 본 발명에 의하면 기판의 한쪽의 면상에 절연층과 발열부와 보호층이 순차 적층되어 이루어지는 써멀헤드에 있어서 전기 발열부에서 발생되는 발열량에 따른 면적까지 과열되는 전열부재를 해당 발열부의 위쪽에 설치했음으로 발열부에 흐르는 전류의 통전시간, 또는 그 진폭을 제어함으로서 인쇄되는 돗트의 크기를 제어할 수가 있다.As described above, according to the present invention, in the thermal head in which an insulating layer, a heat generating portion, and a protective layer are sequentially stacked on one surface of the substrate, the heat transfer member is overheated to an area corresponding to the amount of heat generated by the electric heat generating portion. Since it is provided above the part, it is possible to control the size of the printed dot by controlling the energization time of the current flowing in the heat generating part or its amplitude.

Claims (3)

기판의 한쪽 면상에 절연층과 발열부와 보호층이 순차적으로 적층되어 이루어지는 써멀헤드에 있어서 상기 발열부에서 발생되는 발열량에 따른 면적까지 과열되는 전열부재를 해당 발열부의 윗쪽에 설치한 것을 특징으로 하는 써멀헤드.In a thermal head in which an insulating layer, a heat generating portion, and a protective layer are sequentially stacked on one surface of a substrate, a heat transfer member that is overheated up to an area corresponding to the amount of heat generated by the heat generating portion is provided above the heat generating portion. Thermal head. 제1항에 있어서 상기 전열부재는 상호 대항하는 포위선상 전열재가 축심을 공통으로 하여 복수개 구비하여 이루어지는 것을 특징으로 하는 써멀헤드.The thermal head according to claim 1, wherein the heat transfer member includes a plurality of heat transfer members facing each other with a common axis center. 제2항에 있어서, 상기 포위선상 전열재를 열전도성이 양호한 금속으로 형성한 것을 특징으로 하는 써멀헤드.The thermal head according to claim 2, wherein the envelope-shaped heat transfer material is formed of a metal having good thermal conductivity.
KR1019890001600A 1989-02-13 1989-02-13 Thermal head KR920010636B1 (en)

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KR1019890001600A KR920010636B1 (en) 1989-02-13 1989-02-13 Thermal head

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KR1019890001600A KR920010636B1 (en) 1989-02-13 1989-02-13 Thermal head

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KR920010636B1 true KR920010636B1 (en) 1992-12-12

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