JPS5657176A - Paper control circuit - Google Patents
Paper control circuitInfo
- Publication number
- JPS5657176A JPS5657176A JP13331079A JP13331079A JPS5657176A JP S5657176 A JPS5657176 A JP S5657176A JP 13331079 A JP13331079 A JP 13331079A JP 13331079 A JP13331079 A JP 13331079A JP S5657176 A JPS5657176 A JP S5657176A
- Authority
- JP
- Japan
- Prior art keywords
- slice level
- r1wr5
- rom8
- ffs
- resistors
- 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
Landscapes
- Conveying Record Carriers (AREA)
- Character Input (AREA)
Abstract
PURPOSE: To make initial adjustment and adjustment for maintenance needless, by setting automatically a slice level without increment of the number of levels even for fluctuation of the output level of a paper detector.
CONSTITUTION: Light source 3 and photoelectric conversion element 1 are arranged opposedly to each other while interposing paper 4, and presence or absence of paper 4 is detected by element 1, and the detection signal is amplified by amplifier 2, thereby setting a slice level. This slice level setting circuit is provided with FFs 5W7, resistors R1WR5, operational amplifier 11, and comparator 12, and ROM8 is connected between FFs 5W7 and resistors R1WR5. An adding circuit is constituted with ROM8, resistors R1WR5, and amplifier 11, and nonlinear outputs O1WO5 of the slice level are output on a basis of states of ouputs X, Y and Z of FFs 5W7 by ROM8, and the slice level is set automatically by comparator 12, thus making initial adjustment and adjustment for maintenance needless.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13331079A JPS5657176A (en) | 1979-10-16 | 1979-10-16 | Paper control circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13331079A JPS5657176A (en) | 1979-10-16 | 1979-10-16 | Paper control circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5657176A true JPS5657176A (en) | 1981-05-19 |
JPS6115476B2 JPS6115476B2 (en) | 1986-04-24 |
Family
ID=15101676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13331079A Granted JPS5657176A (en) | 1979-10-16 | 1979-10-16 | Paper control circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5657176A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5771080A (en) * | 1980-10-22 | 1982-05-01 | Fujitsu Ltd | Medium detector |
JPS58184686A (en) * | 1982-04-22 | 1983-10-28 | Oki Electric Ind Co Ltd | Medium detection system |
-
1979
- 1979-10-16 JP JP13331079A patent/JPS5657176A/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5771080A (en) * | 1980-10-22 | 1982-05-01 | Fujitsu Ltd | Medium detector |
JPS6160477B2 (en) * | 1980-10-22 | 1986-12-20 | Fujitsu Ltd | |
JPS58184686A (en) * | 1982-04-22 | 1983-10-28 | Oki Electric Ind Co Ltd | Medium detection system |
JPH0357510B2 (en) * | 1982-04-22 | 1991-09-02 | Oki Electric Ind Co Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPS6115476B2 (en) | 1986-04-24 |
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