GB519328A - Improvements in and relating to sheets or surfaces for use in electrochemical recording means whereby a trace is produced from which instantaneous values as well as the rate of change of values can be deduced - Google Patents
Improvements in and relating to sheets or surfaces for use in electrochemical recording means whereby a trace is produced from which instantaneous values as well as the rate of change of values can be deducedInfo
- Publication number
- GB519328A GB519328A GB2741238A GB2741238A GB519328A GB 519328 A GB519328 A GB 519328A GB 2741238 A GB2741238 A GB 2741238A GB 2741238 A GB2741238 A GB 2741238A GB 519328 A GB519328 A GB 519328A
- Authority
- GB
- United Kingdom
- Prior art keywords
- belt
- values
- trace
- deduced
- relating
- 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
-
- 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
- B41M5/20—Duplicating or marking methods; Sheet materials for use therein using electric current
Landscapes
- Duplication Or Marking (AREA)
Abstract
519,328. Recording-apparatus. HUGHES & SON, Ltd., H., SPROULE, D. O., and HUGHES, A. J. Sept. 20, 1938, No. 27412. [Class 106 (iv)] Recording apparatus embodies a band of flexible material treated with chemicals which will temporarily produce a visible mark on the band when locally decomposed electrolytically by current from a recording stylus. In one construction the belt c is saturated with iodine starch solution and whenever the stylus t is electrically connected a brown trace is made on the belt. Sodium thiosulphate or other decolourizing agent is mixed with the starch solution to cause the brown trace to fade after a short period. The belt c may dip into a tank g of the solutions to keep it saturated. An alternative chemical method of securing the above result is to saturate the belt with phenolphthalein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2741238A GB519328A (en) | 1938-09-20 | 1938-09-20 | Improvements in and relating to sheets or surfaces for use in electrochemical recording means whereby a trace is produced from which instantaneous values as well as the rate of change of values can be deduced |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2741238A GB519328A (en) | 1938-09-20 | 1938-09-20 | Improvements in and relating to sheets or surfaces for use in electrochemical recording means whereby a trace is produced from which instantaneous values as well as the rate of change of values can be deduced |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB519328A true GB519328A (en) | 1940-03-21 |
Family
ID=10259145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2741238A Expired GB519328A (en) | 1938-09-20 | 1938-09-20 | Improvements in and relating to sheets or surfaces for use in electrochemical recording means whereby a trace is produced from which instantaneous values as well as the rate of change of values can be deduced |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB519328A (en) |
-
1938
- 1938-09-20 GB GB2741238A patent/GB519328A/en not_active Expired
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