JPH0241945U - - Google Patents
Info
- Publication number
- JPH0241945U JPH0241945U JP12204888U JP12204888U JPH0241945U JP H0241945 U JPH0241945 U JP H0241945U JP 12204888 U JP12204888 U JP 12204888U JP 12204888 U JP12204888 U JP 12204888U JP H0241945 U JPH0241945 U JP H0241945U
- Authority
- JP
- Japan
- Prior art keywords
- insulating substrate
- allowable value
- edge
- distance
- thermal head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000758 substrate Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Electronic Switches (AREA)
Description
第１図は、この考案の一実施例に係るサーマル
ヘツドの絶縁基板切断前の抵抗体及び電極パター
ンを説明する図、第２図ａ、第２図ｂ及び第２図
ｃは、それぞれ絶縁基板縁部―発熱抵抗体中心間
の距離と共通電極―検査用電極間の導通状態を説
明する図、第３図は、同サーマルヘツド及び従来
のサーマルヘツドの製造工程を説明する図、第４
図は、従来のサーマルヘツドの検査を説明する図
、第５図は、同従来のサーマルヘツドの要部断面
図である。
２ａ：絶縁基板縁部、３：発熱抵抗体列、４：
共通電極、５：個別電極、６：検査用電極、７：
検査用抵抗体。
FIG. 1 is a diagram illustrating the resistor and electrode patterns before cutting the insulating substrate of a thermal head according to an embodiment of the present invention, and FIG. 2 a, FIG. 2 b, and FIG. Figure 3 is a diagram explaining the distance between the edge and the center of the heating resistor and the conduction state between the common electrode and the test electrode. Figure 3 is a diagram explaining the manufacturing process of the same thermal head and a conventional thermal head.
This figure is a diagram for explaining the inspection of a conventional thermal head, and FIG. 5 is a sectional view of a main part of the conventional thermal head. 2a: edge of insulating substrate, 3: heating resistor row, 4:
Common electrode, 5: Individual electrode, 6: Inspection electrode, 7:
Resistor element for inspection.
Claims (1)
体列を形成すると共に、この発熱抵抗体列に通電
する電極とを形成してなるサーマルヘツドにおい
て、 前記絶縁基板縁部上には、一対の検査用電極を
設け、これら検査用電極は、前記絶縁基板縁部と
前記発熱抵抗体列との距離の最小許容値となる位
置より前記絶縁基板上中央側では分離し、前記距
離が最小許容値と最大許容値との間の位置では検
査用抵抗体により結ばれ、前記距離が最大許容値
以上の位置では短絡していることを特徴とするサ
ーマルヘツド。[Claims for Utility Model Registration] A thermal head comprising a heating resistor array formed on an insulating substrate along the edge of the insulating substrate, and an electrode for supplying current to the heating resistor array, comprising: A pair of test electrodes is provided on the edge of the substrate, and these test electrodes are located at a position closer to the center of the insulating substrate than a position where the distance between the edge of the insulating substrate and the heat generating resistor row is the minimum allowable value. A thermal head characterized in that they are separated, connected by a test resistor at a position where the distance is between a minimum allowable value and a maximum allowable value, and are short-circuited at a position where the distance is greater than or equal to the maximum allowable value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12204888U JPH0616763Y2 (en) | 1988-09-17 | 1988-09-17 | Thermal head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12204888U JPH0616763Y2 (en) | 1988-09-17 | 1988-09-17 | Thermal head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0241945U true JPH0241945U (en) | 1990-03-22 |
| JPH0616763Y2 JPH0616763Y2 (en) | 1994-05-02 |
Family
ID=31369612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12204888U Expired - Lifetime JPH0616763Y2 (en) | 1988-09-17 | 1988-09-17 | Thermal head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0616763Y2 (en) |
-
1988
- 1988-09-17 JP JP12204888U patent/JPH0616763Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0616763Y2 (en) | 1994-05-02 |
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