JPS54105948A - Mark detector - Google Patents
Mark detectorInfo
- Publication number
- JPS54105948A JPS54105948A JP1273278A JP1273278A JPS54105948A JP S54105948 A JPS54105948 A JP S54105948A JP 1273278 A JP1273278 A JP 1273278A JP 1273278 A JP1273278 A JP 1273278A JP S54105948 A JPS54105948 A JP S54105948A
- Authority
- JP
- Japan
- Prior art keywords
- mark
- film
- light
- photoelectric conversion
- end parts
- 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
Abstract
PURPOSE: To obtain a simple and economical constitution as well as to prevent the misretrieve caused by the stains or soil on the film by generating the detection signal from the photoelectric conversion element when each light guide receives the light from the mark.
CONSTITUTION: Two units of light guide 10 and 11 composed of the optical fiber bundles, and the end parts of one side of the guides are located at the position on film 1 where mark 3 passes through and also arranged at the film shifting direction (indicated by arrow) with a fixed space between. While the other end parts are positioned on the light receiving surface of photoelectric conversion element 12 (such as the photo transistor or the like). When film 1 is fed in, the beams from lamp 9 are cut off by mark 3 (if opaque) and transmitted if the mark is transparent. Then the optical signals given from mark 3 are detected by element 12 through guide 10 and 11 to be converted into the electric signals, thus producing the necessary output.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1273278A JPS54105948A (en) | 1978-02-07 | 1978-02-07 | Mark detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1273278A JPS54105948A (en) | 1978-02-07 | 1978-02-07 | Mark detector |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54105948A true JPS54105948A (en) | 1979-08-20 |
JPS6141435B2 JPS6141435B2 (en) | 1986-09-16 |
Family
ID=11813602
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1273278A Granted JPS54105948A (en) | 1978-02-07 | 1978-02-07 | Mark detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54105948A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57127270A (en) * | 1981-01-29 | 1982-08-07 | Canon Inc | Retrieving device |
-
1978
- 1978-02-07 JP JP1273278A patent/JPS54105948A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57127270A (en) * | 1981-01-29 | 1982-08-07 | Canon Inc | Retrieving device |
JPH0210985B2 (en) * | 1981-01-29 | 1990-03-12 | Canon Kk |
Also Published As
Publication number | Publication date |
---|---|
JPS6141435B2 (en) | 1986-09-16 |
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