JPS5782703A - Method and device for detecting paper thickness - Google Patents
Method and device for detecting paper thicknessInfo
- Publication number
- JPS5782703A JPS5782703A JP15818880A JP15818880A JPS5782703A JP S5782703 A JPS5782703 A JP S5782703A JP 15818880 A JP15818880 A JP 15818880A JP 15818880 A JP15818880 A JP 15818880A JP S5782703 A JPS5782703 A JP S5782703A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- wheels
- voltage
- alternating
- thickness
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
- G01B7/10—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using magnetic means, e.g. by measuring change of reluctance
- G01B7/107—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using magnetic means, e.g. by measuring change of reluctance for measuring objects while moving
Abstract
PURPOSE:To improve detection precision and durability with simple constitution, by making a voltage, induced across a secondary coil by a primary coil, correspond to the thickness of paper passing through some part of the magnetic path of the primary coil. CONSTITUTION:Copying paper moving in an arrow direction P1 is inserted between contact parts 18 and 19 of wheels 2 and 3, and a roller 17, and the generation of a gap causes the magnetic resistance of a magnetic path part 1 to vary with paper thickness. Alternating magnetic flux 16 shunted toward the roller 17 decreases and alternating magnetic flux 15 of a magnetic path 8 increases to pass in a shaft body 11, so an alternating voltage V2 induced across a secondary coil 12 rises. Paper pressure is detected by the voltage variation. Further, when the copying form is inserted between the wheels 2 and 3, and wheels 9 and 10 as shown by an arrow P2, the alternating voltage V2 decreases in inverse proportion to the paper thickness, which is detected. Thus, detection precision and durability are improved by the simple constitution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15818880A JPS5782703A (en) | 1980-11-12 | 1980-11-12 | Method and device for detecting paper thickness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15818880A JPS5782703A (en) | 1980-11-12 | 1980-11-12 | Method and device for detecting paper thickness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5782703A true JPS5782703A (en) | 1982-05-24 |
Family
ID=15666186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15818880A Pending JPS5782703A (en) | 1980-11-12 | 1980-11-12 | Method and device for detecting paper thickness |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5782703A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11914010B2 (en) | 2020-08-12 | 2024-02-27 | Bruker Biospin Gmbh | Microwave coupling device for iris apertures, comprising a plurality of conductor loops |
-
1980
- 1980-11-12 JP JP15818880A patent/JPS5782703A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11914010B2 (en) | 2020-08-12 | 2024-02-27 | Bruker Biospin Gmbh | Microwave coupling device for iris apertures, comprising a plurality of conductor loops |
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