GB2145667A - Thermal head for a serial printer - Google Patents
Thermal head for a serial printer Download PDFInfo
- Publication number
- GB2145667A GB2145667A GB08421724A GB8421724A GB2145667A GB 2145667 A GB2145667 A GB 2145667A GB 08421724 A GB08421724 A GB 08421724A GB 8421724 A GB8421724 A GB 8421724A GB 2145667 A GB2145667 A GB 2145667A
- Authority
- GB
- United Kingdom
- Prior art keywords
- head body
- terminals
- thermal head
- heat radiator
- radiator plate
- 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
Classifications
-
- 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
-
- 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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/05—Insulated conductive substrates, e.g. insulated metal substrate
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/118—Printed elements for providing electric connections to or between printed circuits specially for flexible printed circuits, e.g. using folded portions
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0058—Laminating printed circuit boards onto other substrates, e.g. metallic substrates
Landscapes
- Electronic Switches (AREA)
Abstract
A thermal head (9) for a serial printer comprises a head body (1) having terminals (3), a heat radiator plate (5a) larger in size than the head body (1) and held against the back of the head body (1), and a flexible printed circuit (7) connected to the terminals (3) of the head body (1) and having terminals (7a) for external connection which are spaced at increased pitches arid held against the heat radiator plate (5a). <IMAGE>
Description
SPECIFICATION
Thermal Head for Serial Printers
The present invention relates to a thermal head for serial printers which is easily attachable to and detachable from an external connector.
Figures 1a and 1b of the accompanying drawings are a front elevational view and a side elevational view of a head body for being mounted on a printer body of a serial printer such as a thermaltransfer printer or a thermal printer. The head body, designated at 1, is fixed to the printer body and has a dot-forming heater 2 on an upper righthand portion as shown in Figure la. The heater 2 is connected by an electrically conductive pattern 4 to one-sided terminals 3 disposed on a lower portion of the head body 1 for external connection.
The thermal head body 1 has a service life capable of printing up to about 10 through 20 million characters. The printer body of a heavy-duty printer has a service life up to about 60 through 100 million characters. Therefore, in order to use the thermal head body 1 having the service life up to about 10 through 20 million characters in the heavy-duty printer, the terminal head body has to be replaceable. One possible replaceable head body 1a, shown in the front elevational view of
Figure 2a, is of a size larger than the conventional head body 1. With the larger size, the head body 1a can easily be handled upon replacement, and one-sided terminals 3a for external connection can be spaced at increased pitches P. The larger pitches P between the one-sided terminals 3a allow the head body 1a to be attached to, detached from, and positioned with respect to a printer connector (not shown).Figure 2b is a side elevational view of
Figure 2a.
As shown in Figures 3a and 3b in front and side elevations, respectively, a heat radiator plate 5 is held against the back of the head body 1 a, thus constituting a thermal head 6.
The head body 1 a of the above thermal head 6 has an electrically conductive pattern 4a which is normally fabricated by a thin-film process. As the size of the head body 1 a is greater, therefore, the cost of the material of the head body 1a also becomes higher. In addition, the percentage of stock utilization per unit area of the material such as ceramic of the head body 1a itself becomes poorer.
As a result, the cost of manufacture of the head body 1a is increased.
With the above prior problems in view, it is an object of the present invention to provide a thermal head for serial printers which can easily be handled and replaced and is relatively less costly to manufacture.
A thermal head for a serial printer according to the present invention uses a conventional head body, a heat radiator plate having a size larger than the head body and held against the back of the head body, and a flexible printed circuit connected to terminals of the head body and having terminals for external connection which are held against the heat radiator plate.
The above and other objects, features and advantages of the present invention will become more apparent from the following description when taken in conjunction with the accompanying drawings in which preferred embodiments of the present invention are shown by way of illustrative example.
Figure la is a front elevational view of a conventional thermal head body;
Figure lb is a side elevational view of the thermal head body shown in Figure 1a;
Figure 2a is a front elevational view of a conventional large-size thermal head body;
Figure 2b is a side elevational view of the thermal head body shown in Figure 2a;
Figure 3a is a front elevational view of a thermal head employing the head body of Figure 2a;
Figure 3b is a side elevational view of the thermal head of Figure 3a;
Figure 4a is a front elevational view of a thermal head according to the present invention;
Figure 4b is a side elevational view of the thermal head illustrated in Figure 4a;
Figure 5 is a side elevational view of a thermal head according to another embodiment of the present invention; and
Figure 6 is a side elevational view of a thermal head according to still another embodiment of the present invention.
Figure 4a shows in front elevation a thermal head 9 according to the present invention, and Figure 4b shows the thermal head 9 in righthand side elevation.
A head body 1 is of the same construction as that of the conventional head body shown in Figure 1a. A heat radiator plate 5a is fixedly held against the back of the head body 1 and has a size greater than that of the head body 1. The heat radiator plate 5a has a portion enlarged in a widened shape below terminals 3 on the head body 1. To the terminals 3 on the head body 1, there is connected one end of a flexible printed circuit 7 fixedly held against the heat radiator plate 5a and having an opposite end supporting one-sided terminals 7b for external connection. Terminals 7b are connected through an electrically conductive pattern 7a to the terminals 3.The one-sided terminals 7b are fixedly held against a lower end of the heat radiator plate 5a and spaced at increased pitches P commensurate with the enlarged portion of the heat radiator plate 5a.
The thermal head 9 can be handled with ease since it is greater in size than the head body 1. The terminals 7b spaced at increased pitches P and held against the heat radiator plate 5a allow easy attachment to, detachment from, and positioning with respect to a connector (not shown) mounted on a printer body.
Figure 5 shows in side elevation a thermal head 9a according to another embodiment of the present invention. The thermal head 9a is composed of a flexible printed circuit 7 fixedly held against the back of a heat radiator plate 5a, and a head body 1 fixedly held against the face of the heat radiator plate 5a and having terminals 3 connected to the flexible printed circuit 7 through an insulated space (not shown) defined in the heat radiator plate 5a.
Figure 6 illustrates in side elevation a thermal head 9b according to still another embodiment of the present invention. The thermal head 9b has a radiator fin 5b integral with an upper end of a heat radiator plate 5a for an improved heat radiation efficiency.
The present invention as described above has the following advantages:
(1) The thermal head can easily be handled since the heat radiator plate held against the back of the head body is greater in size than the head body.
(2) The flexible printed circuit is connected to the head body terminals and has terminals for external connection. This arrangement allows a conventional head body to be used as it is.
(3) With the pitches between the terminals for external connection of the flexible printed circuit being increased, the thermal head can easily be replaced, that is, attached to and detached from the connector of the printer body.
(4) Since the terminals for external connection are held against the heat radiator plate, the heat radiator plate can guide the terminals for easy positioning at the time they are coupled to the connector.
Although certain preferred embodiments have been shown and described, it should be understood that many changes and modifications may be made therein without departing from the scope of the appended claims.
Claims (5)
1. A thermal head for a serial printer, comprising:
(a) a head body having terminals;
(b) a heat radiator plate larger in size than said head body and held against the back of the head body; and
(c) A flexible printed circuit electrically connected to said terminals of the head body and having other terminals for external connection which are spaced apart commensurate with said larger heat radiator plate and held against said heat radiator plate.
(2) A thermal head according to claim 1, wherein said flexible printed circuit has a portion enlarged in a substantially widened shape beyond said terminals of the head body.
3. A thermal head according to claim 1, wherein said flexible printed circuit is held against the back of said heat radiator plate and connected to said terminals of the head body through said heat radiator plate.
4. A thermal head according to claim 1, wherein said heat radiator plate has an integral radiator fin.
5. A thermal head for a serial printer substantially as hereinbefore described with reference to
Figures 3 to 6 of the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983134093U JPS6041248U (en) | 1983-08-30 | 1983-08-30 | Thermal head of serial printer |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8421724D0 GB8421724D0 (en) | 1984-10-03 |
| GB2145667A true GB2145667A (en) | 1985-04-03 |
| GB2145667B GB2145667B (en) | 1987-11-04 |
Family
ID=15120266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08421724A Expired GB2145667B (en) | 1983-08-30 | 1984-08-28 | Thermal head for serial printers |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS6041248U (en) |
| KR (1) | KR860001439Y1 (en) |
| DE (1) | DE3431781A1 (en) |
| GB (1) | GB2145667B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2594749A1 (en) * | 1986-02-21 | 1987-08-28 | Sagem | THERMAL HEAD OF SERIAL TYPE FOR PRINTER |
| US6064415A (en) * | 1997-05-30 | 2000-05-16 | Seiko Instruments Inc. | Thermal head and its fabrication method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0630886B2 (en) * | 1987-06-30 | 1994-04-27 | ロ−ム株式会社 | Thermal head |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1294411A (en) * | 1969-05-08 | 1972-10-25 | Texas Instruments Inc | Improvements in or relating to thermal printing systems |
| GB2019782A (en) * | 1978-01-23 | 1979-11-07 | Energy Conversion Devices Inc | Heat applying microfilm recording apparatus |
| EP0085177A2 (en) * | 1982-02-01 | 1983-08-10 | International Business Machines Corporation | Thermal print head having glazed metal substrate |
-
1983
- 1983-08-30 JP JP1983134093U patent/JPS6041248U/en active Pending
-
1984
- 1984-08-23 KR KR2019840008276U patent/KR860001439Y1/en active IP Right Grant
- 1984-08-28 GB GB08421724A patent/GB2145667B/en not_active Expired
- 1984-08-29 DE DE19843431781 patent/DE3431781A1/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1294411A (en) * | 1969-05-08 | 1972-10-25 | Texas Instruments Inc | Improvements in or relating to thermal printing systems |
| GB2019782A (en) * | 1978-01-23 | 1979-11-07 | Energy Conversion Devices Inc | Heat applying microfilm recording apparatus |
| EP0085177A2 (en) * | 1982-02-01 | 1983-08-10 | International Business Machines Corporation | Thermal print head having glazed metal substrate |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2594749A1 (en) * | 1986-02-21 | 1987-08-28 | Sagem | THERMAL HEAD OF SERIAL TYPE FOR PRINTER |
| EP0239434A1 (en) * | 1986-02-21 | 1987-09-30 | Societe D'applications Generales D'electricite Et De Mecanique Sagem | Serial thermal writing head for a printer |
| US4806947A (en) * | 1986-02-21 | 1989-02-21 | Societe D'applications Generales D'electricite | Series type thermal writing head for printer |
| US6064415A (en) * | 1997-05-30 | 2000-05-16 | Seiko Instruments Inc. | Thermal head and its fabrication method |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8421724D0 (en) | 1984-10-03 |
| DE3431781A1 (en) | 1985-03-14 |
| GB2145667B (en) | 1987-11-04 |
| JPS6041248U (en) | 1985-03-23 |
| KR860001439Y1 (en) | 1986-07-12 |
| KR850009538U (en) | 1985-12-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4963886A (en) | Thermal printing head | |
| KR960012761B1 (en) | Heater for sheet material | |
| JPH058420A (en) | Line type thermal printing head | |
| GB2145667A (en) | Thermal head for a serial printer | |
| US5343021A (en) | Heater mounted on a substrate having a hole penetrating through the substrate | |
| KR920009861B1 (en) | Thermal printing head | |
| EP0488806A3 (en) | Ink jet recording head and driving circuit therefor | |
| EP0372896A2 (en) | Recording head including electrode supporting substrate having thin-walled contact end portion | |
| US4806947A (en) | Series type thermal writing head for printer | |
| CN211843702U (en) | Thermal printing head and printer | |
| US4781113A (en) | Electric conduction printer | |
| JP3829598B2 (en) | Tube-type incandescent lamp and lamp mounting structure | |
| CN218183585U (en) | Multilayer PCB circuit board capable of being fixed fast | |
| JPH09254423A (en) | Thermal print head apparatus | |
| KR920010636B1 (en) | Thermal head | |
| JPS581566U (en) | printer | |
| EP0288844B1 (en) | Recording head for use in an electrically excited transfer recording device | |
| CN217293996U (en) | Thermosensitive word erasing device and printing equipment | |
| JPS59131474A (en) | Thermal printer | |
| CN217214475U (en) | Electrolytic capacitor dust keeper | |
| CN219036552U (en) | COB lamp area | |
| JPS633969A (en) | Thermal head | |
| JPH02286261A (en) | Thermal head | |
| US5243361A (en) | Line-type thermal printing head | |
| JP2605393Y2 (en) | Thermal head |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |