JPS56117942A - Abnormal sheet material detector in sheet material processor - Google Patents
Abnormal sheet material detector in sheet material processorInfo
- Publication number
- JPS56117942A JPS56117942A JP2187480A JP2187480A JPS56117942A JP S56117942 A JPS56117942 A JP S56117942A JP 2187480 A JP2187480 A JP 2187480A JP 2187480 A JP2187480 A JP 2187480A JP S56117942 A JPS56117942 A JP S56117942A
- Authority
- JP
- Japan
- Prior art keywords
- sheet material
- circuit
- output
- storage circuit
- detection value
- 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 prevent a malfunction caused by a change in the feed rate of sheet material and in the drift of a circuit by using the detection value of the n-th sheet material as a reference value to be compared with that of the (n+1)-th sheet material.
CONSTITUTION: When the front edge of the second sheet material S2 arrives between a radiation light emitting diode 42 and a photodiode 44, a storage circuit 56a sample-holds the detection value output e02 of an amplification circuit 4 using the sample pulses from a timing circuit 52a. On the other hand, since the signals for the first sheet material are not entered into a timing circuit 58, a storage circuit 57a continues holding the stored detection value output e01 of the first sheet material. Consequently, a comparator circuit 54a compares the output e02' of the amplification circuit 4 with the output e01 when the rear edge of the sheet material S2 passes through the detectors 42 and 44. Subsequently, the output e02 of the storage circuit 56a is transferred to the storage circuit 57a and is used as a reference value.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55021874A JPS5842091B2 (en) | 1980-02-23 | 1980-02-23 | Abnormal sheet material detection device in sheet material processing machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55021874A JPS5842091B2 (en) | 1980-02-23 | 1980-02-23 | Abnormal sheet material detection device in sheet material processing machine |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57209917A Division JPS58212539A (en) | 1982-11-29 | 1982-11-29 | Abnormal sheet material detecting device in sheet material processing machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56117942A true JPS56117942A (en) | 1981-09-16 |
JPS5842091B2 JPS5842091B2 (en) | 1983-09-17 |
Family
ID=12067266
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55021874A Expired JPS5842091B2 (en) | 1980-02-23 | 1980-02-23 | Abnormal sheet material detection device in sheet material processing machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5842091B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6036249A (en) * | 1983-08-08 | 1985-02-25 | Fuji Syst Kiki Kk | Device for monitoring movement of thin sheet |
JPH02147546A (en) * | 1988-08-12 | 1990-06-06 | Laurel Bank Mach Co Ltd | Paper discriminating device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5245103A (en) * | 1975-09-02 | 1977-04-09 | Voest Ag | Scraper |
JPS5315914A (en) * | 1976-07-27 | 1978-02-14 | Canon Kk | Abnormal transference detector |
-
1980
- 1980-02-23 JP JP55021874A patent/JPS5842091B2/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5245103A (en) * | 1975-09-02 | 1977-04-09 | Voest Ag | Scraper |
JPS5315914A (en) * | 1976-07-27 | 1978-02-14 | Canon Kk | Abnormal transference detector |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6036249A (en) * | 1983-08-08 | 1985-02-25 | Fuji Syst Kiki Kk | Device for monitoring movement of thin sheet |
JPS64292B2 (en) * | 1983-08-08 | 1989-01-06 | Fuji Shisutemu Kiki Kk | |
JPH02147546A (en) * | 1988-08-12 | 1990-06-06 | Laurel Bank Mach Co Ltd | Paper discriminating device |
Also Published As
Publication number | Publication date |
---|---|
JPS5842091B2 (en) | 1983-09-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term | ||
S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |