JPS559883A - Printing mechanism in printer - Google Patents
Printing mechanism in printerInfo
- 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
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
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)
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 |
-
1978
- 1978-07-08 JP JP8340478A patent/JPS559883A/en active Pending
Cited By (1)
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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