JPS5595585A - Printer - Google Patents

Printer

Info

Publication number
JPS5595585A
JPS5595585A JP265079A JP265079A JPS5595585A JP S5595585 A JPS5595585 A JP S5595585A JP 265079 A JP265079 A JP 265079A JP 265079 A JP265079 A JP 265079A JP S5595585 A JPS5595585 A JP S5595585A
Authority
JP
Japan
Prior art keywords
hammer
flight
time
cam
character
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
JP265079A
Other languages
Japanese (ja)
Inventor
Yoshihiro Mitsui
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.)
Seiko Epson Corp
Suwa Seikosha KK
Epson Corp
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
Epson Corp
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 Seiko Epson Corp, Suwa Seikosha KK, Epson Corp filed Critical Seiko Epson Corp
Priority to JP265079A priority Critical patent/JPS5595585A/en
Priority to GB8000892A priority patent/GB2046670B/en
Publication of JPS5595585A publication Critical patent/JPS5595585A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J9/00—Hammer-impression mechanisms
    • B41J9/26—Means for operating hammers to effect impression
    • B41J9/36—Means for operating hammers to effect impression in which mechanical power is applied under electromagnetic control

Landscapes

  • Impact Printers (AREA)

Abstract

PURPOSE: To obtain high reliability and good character alignment by a method wherein a hammer is actuated with an electromagnet and a spring at the time of printing and the hammer is returned by a cam to control the flight start position, then the time of flight of the hammer gets stabilized.
CONSTITUTION: Drive pulse 42 is applied to coil 3 by means of timing signal 41, which corresponds to desired character 2; whereby a polarity opposing to permanent magnet 31 is created on ferrite core 4 to cause the repulsion between the both parts. Hammer 7 starts up the flight as shown in condition 43 from point t3 where the control of cam 33 is released as shown in condition 44, and runs into character 2 at the time of flight time T3. Hammer 7, being returned by the collision, is returned again immediately by means of cam 33 and spring 32; hammer 7 being retained by the action of the magnetic circuit including permanent magnet 31, thus to prevent a re-absorption phenomenon. The stability of flight start time t3 contributes greatly to the stability of flight time T3, thus resulting in the remarkable improvement of the character alignment.
COPYRIGHT: (C)1980,JPO&Japio
JP265079A 1979-01-12 1979-01-12 Printer Pending JPS5595585A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP265079A JPS5595585A (en) 1979-01-12 1979-01-12 Printer
GB8000892A GB2046670B (en) 1979-01-12 1980-01-10 Printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP265079A JPS5595585A (en) 1979-01-12 1979-01-12 Printer

Publications (1)

Publication Number Publication Date
JPS5595585A true JPS5595585A (en) 1980-07-19

Family

ID=11535223

Family Applications (1)

Application Number Title Priority Date Filing Date
JP265079A Pending JPS5595585A (en) 1979-01-12 1979-01-12 Printer

Country Status (2)

Country Link
JP (1) JPS5595585A (en)
GB (1) GB2046670B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57116668A (en) * 1981-01-14 1982-07-20 Hitachi Ltd Heat sensitive recording device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1223837A (en) * 1983-09-26 1987-07-07 Takeshi Takemoto Electromagnetic printing hammer device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57116668A (en) * 1981-01-14 1982-07-20 Hitachi Ltd Heat sensitive recording device

Also Published As

Publication number Publication date
GB2046670A (en) 1980-11-19
GB2046670B (en) 1983-02-02

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