GB1389387A - Thermographic print head and method of making same - Google Patents
Thermographic print head and method of making sameInfo
- Publication number
- GB1389387A GB1389387A GB2955873A GB2955873A GB1389387A GB 1389387 A GB1389387 A GB 1389387A GB 2955873 A GB2955873 A GB 2955873A GB 2955873 A GB2955873 A GB 2955873A GB 1389387 A GB1389387 A GB 1389387A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- print head
- thermographic
- molybdenum
- june
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K1/00—Methods or arrangements for marking the record carrier in digital fashion
- G06K1/12—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching
- G06K1/126—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching by photographic or thermographic registration
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Optics & Photonics (AREA)
- Electronic Switches (AREA)
Abstract
1389387 Selective printing RCA CORPORATION 21 June 1973 [21 June 1972] 29558/73 Heading B6F A thermographic print head includes an electrically insulating substrate 12 having a first electrically conductive layer 13 providing terminal leads 16, and a common return lead 18, a second insulating layer 28 and upon that a third electrically conducting layer. The third layer may comprise concentric rings 22 each connected by diametrically opposite passages through the second layer 28 to one of the leads 16 and the lead 18. The relative resistances of the first and third layers are chosen so that the third layer act as the heat sources, for providing an impression on a thermographic paper, without the first layer heating sufficiently to cause blurring or insufficiently so as to act as a heat sink to the third layer. The substrate 12 and layer 28 may be of "Pyrex" (Registered Trade Mark) glass. The first layer may be a thin layer of chromium, titanium, hafnium tantalum or alloys thereof overlaid with molybdenum and the third layer of molybdenum. The head is made by sputtering the metal layers and etching them as required and the second layer is also sputtered and etched photolithographically.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US26483272A | 1972-06-21 | 1972-06-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1389387A true GB1389387A (en) | 1975-04-03 |
Family
ID=23007800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2955873A Expired GB1389387A (en) | 1972-06-21 | 1973-06-21 | Thermographic print head and method of making same |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US3736406A (en) |
| JP (1) | JPS5340456B2 (en) |
| AU (1) | AU476058B2 (en) |
| CA (1) | CA990341A (en) |
| CH (1) | CH567305A5 (en) |
| DE (1) | DE2331536C3 (en) |
| FR (1) | FR2190057A5 (en) |
| GB (1) | GB1389387A (en) |
| IT (1) | IT986440B (en) |
| NL (1) | NL7308317A (en) |
| SE (1) | SE392840B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4446362A (en) * | 1979-05-21 | 1984-05-01 | Rca Corporation | Workpiece with abraded machine-readable marking therein and method of making |
| US4327283A (en) * | 1979-09-24 | 1982-04-27 | Rca Corporation | Workpiece with machine-readable marking recessed therein and method of making same |
| JPS57138961A (en) * | 1981-02-23 | 1982-08-27 | Fujitsu Ltd | Crossover formation for thermal head |
| JPS627531Y2 (en) * | 1981-03-24 | 1987-02-21 | ||
| US4391535A (en) * | 1981-08-10 | 1983-07-05 | Intermec Corporation | Method and apparatus for controlling the area of a thermal print medium that is exposed by a thermal printer |
| US5414245A (en) * | 1992-08-03 | 1995-05-09 | Hewlett-Packard Corporation | Thermal-ink heater array using rectifying material |
| DE20205708U1 (en) * | 2002-04-12 | 2003-08-21 | Heidemanns, Peter, 47839 Krefeld | Textile sample printer automatically prints information on both sides of samples during step advancement around drum |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3495070A (en) * | 1967-05-29 | 1970-02-10 | Murray H Zissen | Thermal printing apparatus |
| US3483356A (en) * | 1968-06-27 | 1969-12-09 | Sprague Electric Co | Thermal printing head |
| US3578946A (en) * | 1969-10-27 | 1971-05-18 | Ncr Co | Thermal print head wafer and method of making the same |
-
1972
- 1972-06-21 US US00264832A patent/US3736406A/en not_active Expired - Lifetime
-
1973
- 1973-05-31 CA CA172,811A patent/CA990341A/en not_active Expired
- 1973-06-13 IT IT68717/73A patent/IT986440B/en active
- 1973-06-15 NL NL7308317A patent/NL7308317A/xx unknown
- 1973-06-15 AU AU56987/73A patent/AU476058B2/en not_active Expired
- 1973-06-19 SE SE7308621A patent/SE392840B/en unknown
- 1973-06-20 JP JP6968373A patent/JPS5340456B2/ja not_active Expired
- 1973-06-20 FR FR7322538A patent/FR2190057A5/fr not_active Expired
- 1973-06-20 DE DE2331536A patent/DE2331536C3/en not_active Expired
- 1973-06-21 GB GB2955873A patent/GB1389387A/en not_active Expired
- 1973-06-21 CH CH904473A patent/CH567305A5/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| CA990341A (en) | 1976-06-01 |
| FR2190057A5 (en) | 1974-01-25 |
| DE2331536B2 (en) | 1980-05-22 |
| JPS4958841A (en) | 1974-06-07 |
| US3736406A (en) | 1973-05-29 |
| AU5698773A (en) | 1974-12-19 |
| JPS5340456B2 (en) | 1978-10-27 |
| SE392840B (en) | 1977-04-25 |
| CH567305A5 (en) | 1975-09-30 |
| DE2331536C3 (en) | 1981-02-12 |
| NL7308317A (en) | 1973-12-27 |
| AU476058B2 (en) | 1976-09-09 |
| DE2331536A1 (en) | 1974-01-17 |
| IT986440B (en) | 1975-01-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] |