JPS5671180A - Recording paper terminal detection system - Google Patents
Recording paper terminal detection systemInfo
- Publication number
- JPS5671180A JPS5671180A JP14602279A JP14602279A JPS5671180A JP S5671180 A JPS5671180 A JP S5671180A JP 14602279 A JP14602279 A JP 14602279A JP 14602279 A JP14602279 A JP 14602279A JP S5671180 A JPS5671180 A JP S5671180A
- Authority
- JP
- Japan
- Prior art keywords
- output
- marks
- becomes
- terminal
- level
- 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
- Handling Of Sheets (AREA)
- Facsimiles In General (AREA)
Abstract
PURPOSE: To detect terminal notice marks surely, by providing plural terminal notice marks on the reverse side of the recording paper terminal and by comparing the read output for them with he read output for no marks and by amplifying the comparision result differentially and by detecting the terminal on a basis of the continuity quantity of these marks.
CONSTITUTION: The output of photosensor 14 for no marks is amplified by amplifirer A and is held in capacitor C (sample hold), and a part of the output becomes the positive input of comparator COM. Simultaneously, the ouput of amplifier A is divided by resistances R2 and R3 and becomes the inversion input of comparator COM. In this case, output S1 of comparator COM is set to a low level. When the recording paper terminal mark is detected, the output of photosensor 14 is lowered, and the inversion input of the comparator becomes small, and output S1 becomes high-level, and counter CTR starts counting clock CP. When high-level S1 continues for a prescribed time, output Q4 becomes high-level to report the paper end.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14602279A JPS5671180A (en) | 1979-11-13 | 1979-11-13 | Recording paper terminal detection system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14602279A JPS5671180A (en) | 1979-11-13 | 1979-11-13 | Recording paper terminal detection system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5671180A true JPS5671180A (en) | 1981-06-13 |
Family
ID=15398321
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14602279A Pending JPS5671180A (en) | 1979-11-13 | 1979-11-13 | Recording paper terminal detection system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5671180A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5881573A (en) * | 1981-11-11 | 1983-05-16 | Nippon Steel Weld Prod & Eng Co Ltd | Method for taking out wire for welding |
-
1979
- 1979-11-13 JP JP14602279A patent/JPS5671180A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5881573A (en) * | 1981-11-11 | 1983-05-16 | Nippon Steel Weld Prod & Eng Co Ltd | Method for taking out wire for welding |
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