JPS5772577A - Abnormal condition detector in sheet folding - Google Patents

Abnormal condition detector in sheet folding

Info

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
Application number
JP14963180A
Other languages
Japanese (ja)
Inventor
Kiyoshi Niinuma
Akio Saito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koki Holdings Co Ltd
Original Assignee
Hitachi Koki Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Koki Co Ltd filed Critical Hitachi Koki Co Ltd
Priority to JP14963180A priority Critical patent/JPS5772577A/en
Publication of JPS5772577A publication Critical patent/JPS5772577A/en
Pending legal-status Critical Current

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
JP14963180A 1980-10-24 1980-10-24 Abnormal condition detector in sheet folding Pending JPS5772577A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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