JPS5577586A - Printing pressure control system for type impact printer - Google Patents

Printing pressure control system for type impact printer

Info

Publication number
JPS5577586A
JPS5577586A JP15099778A JP15099778A JPS5577586A JP S5577586 A JPS5577586 A JP S5577586A JP 15099778 A JP15099778 A JP 15099778A JP 15099778 A JP15099778 A JP 15099778A JP S5577586 A JPS5577586 A JP S5577586A
Authority
JP
Japan
Prior art keywords
hammer
printing
velocity
analog signal
printing pressure
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
JP15099778A
Other languages
Japanese (ja)
Inventor
Akio Watanabe
Kenichi Itahara
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP15099778A priority Critical patent/JPS5577586A/en
Publication of JPS5577586A publication Critical patent/JPS5577586A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To provide a high-quality printing of uniform print density by detecting hammer flight velocity and directly controlling hammer impact velocity.
CONSTITUTION: A decoder 1 decodes printing sheet number information and printing head position information of a printer and generates printing pressure information corresponding to the magnitude of copy sheet number and of type printing area. A digital signal from the decoder 1 is converted into an analog signal by a converter 2. A comparator 3 is fed with the analog signal and the output of a hammer velocity detection mechanism 6. The comparator 3 and the mechanism 6, together with a driver circuit 4 and a hammer magnet 5, constitute a hammer flight velocity control circuit 7 for controlling hammer flight velocity at a value conrresponding to the analog signal from the converter 2.
COPYRIGHT: (C)1980,JPO&Japio
JP15099778A 1978-12-08 1978-12-08 Printing pressure control system for type impact printer Pending JPS5577586A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15099778A JPS5577586A (en) 1978-12-08 1978-12-08 Printing pressure control system for type impact printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15099778A JPS5577586A (en) 1978-12-08 1978-12-08 Printing pressure control system for type impact printer

Publications (1)

Publication Number Publication Date
JPS5577586A true JPS5577586A (en) 1980-06-11

Family

ID=15509017

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15099778A Pending JPS5577586A (en) 1978-12-08 1978-12-08 Printing pressure control system for type impact printer

Country Status (1)

Country Link
JP (1) JPS5577586A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6480565A (en) * 1987-09-22 1989-03-27 Canon Kk Impact printer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5474120A (en) * 1977-11-03 1979-06-14 Philips Nv Printer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5474120A (en) * 1977-11-03 1979-06-14 Philips Nv Printer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6480565A (en) * 1987-09-22 1989-03-27 Canon Kk Impact printer

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