JPS5579156A - Letter ring feed detector for flat table type number printer - Google Patents

Letter ring feed detector for flat table type number printer

Info

Publication number
JPS5579156A
JPS5579156A JP15456578A JP15456578A JPS5579156A JP S5579156 A JPS5579156 A JP S5579156A JP 15456578 A JP15456578 A JP 15456578A JP 15456578 A JP15456578 A JP 15456578A JP S5579156 A JPS5579156 A JP S5579156A
Authority
JP
Japan
Prior art keywords
letter
letter ring
ring
magnet
circuit
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
Application number
JP15456578A
Other languages
Japanese (ja)
Other versions
JPS6054193B2 (en
Inventor
Yasuo Kubota
Yasuo Kato
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.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing 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 Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to JP15456578A priority Critical patent/JPS6054193B2/en
Publication of JPS5579156A publication Critical patent/JPS5579156A/en
Publication of JPS6054193B2 publication Critical patent/JPS6054193B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To indicate a poor letter ring feed by detecting the half turning of letter ring through detection of a change in the voltage caused among the scannings of respective letter rings with Hall elements facing each other in the numbering device having a magnet at each type of letter ring.
CONSTITUTION: Hall elements are so arranged that each letter ring faces a magnet when it is normally fed. A rod 20 impacts against the fixed section to feed all letter rings normally without any half-turning. Under such a condition, the Hall elements scan the magnet 36 every type and thus, a voltage close to the reference level is developed leading a F/F circuit 60, an alarm 62 or the like to fail to work. But, if the letter ring 22X for instance causes a half turning, the Hall element 38 fails to develop voltage when it faces this letter ring. Therefore, a comparator 56X detects an extremely smaller input than the reference voltage and turns the F/F circuit on through an OR circuit to actuate the alarm 62.
COPYRIGHT: (C)1980,JPO&Japio
JP15456578A 1978-12-12 1978-12-12 Character wheel feed detection device for flatbed number printing machines Expired JPS6054193B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15456578A JPS6054193B2 (en) 1978-12-12 1978-12-12 Character wheel feed detection device for flatbed number printing machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15456578A JPS6054193B2 (en) 1978-12-12 1978-12-12 Character wheel feed detection device for flatbed number printing machines

Publications (2)

Publication Number Publication Date
JPS5579156A true JPS5579156A (en) 1980-06-14
JPS6054193B2 JPS6054193B2 (en) 1985-11-29

Family

ID=15587010

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15456578A Expired JPS6054193B2 (en) 1978-12-12 1978-12-12 Character wheel feed detection device for flatbed number printing machines

Country Status (1)

Country Link
JP (1) JPS6054193B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63298395A (en) * 1987-05-29 1988-12-06 ヤマハ株式会社 Electronic percussion instrument

Also Published As

Publication number Publication date
JPS6054193B2 (en) 1985-11-29

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