JPS5772577A - Abnormal condition detector in sheet folding - Google Patents
Abnormal condition detector in sheet foldingInfo
- Publication number
- JPS5772577A JPS5772577A JP14963180A JP14963180A JPS5772577A JP S5772577 A JPS5772577 A JP S5772577A JP 14963180 A JP14963180 A JP 14963180A JP 14963180 A JP14963180 A JP 14963180A JP S5772577 A JPS5772577 A JP S5772577A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- switch
- crease
- abnormality
- state
- 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
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
Abstract
PURPOSE: To make it possible to early and surely detect abnormality in sheet folding a sheet folding device for a lineprinter by regarding as abnormality when the reversely returning interval of a rotary sleeve which is rotated each time when the crease of the sheet passes therealong, is longer than a reference time interval.
CONSTITUTION: The crease of sheets 2 which are periodically dropped in the direction indicated by an arrow B, are checked by an impeller 4 on their ways so as to be forcedly retained on a receiving table 5. Just before that, the creases of the sheets 2 rotate sheet detecting pieces 16 which turns on a proximity switch 21 and returns to its original position by the dead weight of itself when the crease of each sheet leaves therefrom. In this state, if abnormality in sheet folding arises, operating time intervals of the proximity switch 21 are not constant so that the switch 21 is maintained for a long time in the turning-off state. Further, if the sheet is folded at a position other than its predetermined crease position, the switch 21 is maintained for a long time in the state that the switch is not turned off due to the swelling of the sheet. By comparing the operating time interval of the switch 21 with a reference time interval which is determined by a positional signal of guide rods 3 manually set every folding length, abnormality is surely detected.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14963180A JPS5772577A (en) | 1980-10-24 | 1980-10-24 | Abnormal condition detector in sheet folding |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14963180A JPS5772577A (en) | 1980-10-24 | 1980-10-24 | Abnormal condition detector in sheet folding |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5772577A true JPS5772577A (en) | 1982-05-06 |
Family
ID=15479441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14963180A Pending JPS5772577A (en) | 1980-10-24 | 1980-10-24 | Abnormal condition detector in sheet folding |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5772577A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5986556A (en) * | 1982-11-11 | 1984-05-18 | Fujitsu Ltd | System for detecting condition of floding |
JPH0359964U (en) * | 1990-09-06 | 1991-06-12 |
-
1980
- 1980-10-24 JP JP14963180A patent/JPS5772577A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5986556A (en) * | 1982-11-11 | 1984-05-18 | Fujitsu Ltd | System for detecting condition of floding |
JPH0359964U (en) * | 1990-09-06 | 1991-06-12 |
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