JPS5735734A - Transmission light measuring device - Google Patents
Transmission light measuring deviceInfo
- Publication number
- JPS5735734A JPS5735734A JP11239680A JP11239680A JPS5735734A JP S5735734 A JPS5735734 A JP S5735734A JP 11239680 A JP11239680 A JP 11239680A JP 11239680 A JP11239680 A JP 11239680A JP S5735734 A JPS5735734 A JP S5735734A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- record
- medium
- output
- photodetecting element
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
- G01V8/20—Detecting, e.g. by using light barriers using multiple transmitters or receivers
Abstract
PURPOSE:To exactly detect a kind and quantity of a medium, by storing an output in case a medium of a transmission photodetecting element part has no record, and an output before a record appears, while there is a record, and changing it over when it is used. CONSTITUTION:A medium 2 is irradiated by a light source 11 and is photoelectrically converted by a reflection photodetecting element 12. The light source 1 irradiates a transmission photodetecting element 3 through the medium 2. An output of the reflection photodetecting element 12 is delayed by the time alpha when the medium 2 moves between the fields of view of both the photodetecting elements 12, 3, by a delaying circuit 16 through a printing discriminating circuit 15. When the reflection photodetecting element 12 detects a record, a signal 113 becomes small, a signal 144 becomes ''1'', and a signal 115 is delayed by the time alpha. A sampling circuit 19 makes an output 102 of an amplifier 4 an output signal 116 as it is, when the signal 115 is ''0'' (there is no record in the signal 113), and stores the signal 102 in that case and makes it the output signal 116, when the signal 115 becomes ''1''. In this way, the output signal exactly detects a kind and quantity of a medium, irrespective of whether there is a record or not.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11239680A JPS5735734A (en) | 1980-08-14 | 1980-08-14 | Transmission light measuring device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11239680A JPS5735734A (en) | 1980-08-14 | 1980-08-14 | Transmission light measuring device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5735734A true JPS5735734A (en) | 1982-02-26 |
JPS6223816B2 JPS6223816B2 (en) | 1987-05-25 |
Family
ID=14585606
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11239680A Granted JPS5735734A (en) | 1980-08-14 | 1980-08-14 | Transmission light measuring device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5735734A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04106307U (en) * | 1990-12-27 | 1992-09-14 | 道廣 菅 | traffic safety clothing |
-
1980
- 1980-08-14 JP JP11239680A patent/JPS5735734A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6223816B2 (en) | 1987-05-25 |
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