JPS559883A - Printing mechanism in printer - Google Patents

Printing mechanism in printer

Info

Publication number
JPS559883A
JPS559883A JP8340478A JP8340478A JPS559883A JP S559883 A JPS559883 A JP S559883A JP 8340478 A JP8340478 A JP 8340478A JP 8340478 A JP8340478 A JP 8340478A JP S559883 A JPS559883 A JP S559883A
Authority
JP
Japan
Prior art keywords
trigger lever
printing
hammer
center
gravity
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
JP8340478A
Other languages
Japanese (ja)
Inventor
Makoto Yasunaga
Nagao Mizutani
Toshio Kurihara
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch 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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP8340478A priority Critical patent/JPS559883A/en
Publication of JPS559883A publication Critical patent/JPS559883A/en
Pending legal-status Critical Current

Links

Landscapes

  • Impact Printers (AREA)

Abstract

PURPOSE: A printing mechanism for precluding the possibility of duplicated hammering and reducing the power consumption of an electromagnet, comprising a trigger lever engaged with a revolving ratchet, so that the driving force from the ratchet is transferred to a hammer via the trigger lever for printing.
CONSTITUTION: While a type drum 1 and the ractchet 14 are made to revolve synchronously, exciting current is supplied to a coil 23 according to a printing command in such a state that an ink ribbon 4 is ruuning in the direction of a column. Consequently, an iron core 24 draws an armature 20 in, and drives and actuator 14 counterclockwise. The hammer 2 types the printing drum through the ink ribbon 4 and recording paper 3; thus letters and so forth are printed on the recording paper. A straight line connecting the axis of the rotation of the hammer 2 and the center of gravity of the trigger lever is made to cross at a right angle a straight line linking the rocking center 2d of the trigger lever and its center pf gravity. By so doing, it is so constituted that there will not occur any movement of the trigger lever due to its force of inertia.
COPYRIGHT: (C)1980,JPO&Japio
JP8340478A 1978-07-08 1978-07-08 Printing mechanism in printer Pending JPS559883A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8340478A JPS559883A (en) 1978-07-08 1978-07-08 Printing mechanism in printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8340478A JPS559883A (en) 1978-07-08 1978-07-08 Printing mechanism in printer

Publications (1)

Publication Number Publication Date
JPS559883A true JPS559883A (en) 1980-01-24

Family

ID=13801482

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8340478A Pending JPS559883A (en) 1978-07-08 1978-07-08 Printing mechanism in printer

Country Status (1)

Country Link
JP (1) JPS559883A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5042376A (en) * 1987-09-02 1991-08-27 Bull Hn Information Systems Italia S.P.A. Aerodynamic damper for an impact printing actuator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5042376A (en) * 1987-09-02 1991-08-27 Bull Hn Information Systems Italia S.P.A. Aerodynamic damper for an impact printing actuator

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