JPS5537675A - Form detector - Google Patents
Form detectorInfo
- Publication number
- JPS5537675A JPS5537675A JP11092778A JP11092778A JPS5537675A JP S5537675 A JPS5537675 A JP S5537675A JP 11092778 A JP11092778 A JP 11092778A JP 11092778 A JP11092778 A JP 11092778A JP S5537675 A JPS5537675 A JP S5537675A
- Authority
- JP
- Japan
- Prior art keywords
- time constant
- circuit
- output
- constant circuit
- existence
- 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.)
- Pending
Links
Landscapes
- Conveying Record Carriers (AREA)
- Facsimiles In General (AREA)
Abstract
PURPOSE: To make it possible to detect not only the existence of a form but also double feeding by making a comparison between the outputs of two time constant circuits differing in time constant.
CONSTITUTION: Form 2 being fed in the direction A is held between feed rollers 11 and 12, and 13 and 14 and light emitting device 3 on one side is confronted to photo detector 4 on the other side. The output of photo detector 4 is supplied to the 1st time contant circuit 8 and peak detector 9 both. Output (f) of peak detector 9 is further passed through the 2nd time constant circuit 10 having a larger time constant than that of the 1st time constant circuit 8. Then, comparing output (e) of the 1st time constant circuit 8 and that (g) of the 2nd time constant circuit 10 in level by comparator 7 can obtain signal (h) on the existence of form 2.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11092778A JPS5537675A (en) | 1978-09-09 | 1978-09-09 | Form detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11092778A JPS5537675A (en) | 1978-09-09 | 1978-09-09 | Form detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5537675A true JPS5537675A (en) | 1980-03-15 |
Family
ID=14548132
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11092778A Pending JPS5537675A (en) | 1978-09-09 | 1978-09-09 | Form detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5537675A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59180091U (en) * | 1983-05-18 | 1984-12-01 | 積水化学工業株式会社 | curved pipe |
JPS62126763A (en) * | 1985-11-27 | 1987-06-09 | Nec Corp | Facsimile equipment |
-
1978
- 1978-09-09 JP JP11092778A patent/JPS5537675A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59180091U (en) * | 1983-05-18 | 1984-12-01 | 積水化学工業株式会社 | curved pipe |
JPS62126763A (en) * | 1985-11-27 | 1987-06-09 | Nec Corp | Facsimile equipment |
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