US3881587A - Device for controlling the movement of the printing head in printers - Google Patents

Device for controlling the movement of the printing head in printers Download PDF

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Publication number
US3881587A
US3881587A US410559A US41055973A US3881587A US 3881587 A US3881587 A US 3881587A US 410559 A US410559 A US 410559A US 41055973 A US41055973 A US 41055973A US 3881587 A US3881587 A US 3881587A
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US
United States
Prior art keywords
printing head
printing
operating lever
head
movement
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.)
Expired - Lifetime
Application number
US410559A
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English (en)
Inventor
Katsuhiko Okabe
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.)
Nidec Copal Corp
Koparu KK
Original Assignee
Nidec Copal 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 Nidec Copal Corp filed Critical Nidec Copal Corp
Application granted granted Critical
Publication of US3881587A publication Critical patent/US3881587A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B41J19/00—Character- or line-spacing mechanisms
    • B41J19/18—Character-spacing or back-spacing mechanisms; Carriage return or release devices therefor

Definitions

  • ABSTRACT A device for controlling the movement of the printing [3O] Fnreign Application Priority Data head in printers comprising an operating lever pivotably mounted on the printing head and a cam plate ar- Nov.
  • the present invention relates to a printer which is adapted to print by reciprocating a printing head along a platen and. more particularly. to a device for controlling the movement of the printing head in printers arranged to push the printing head for printing during ad- I vancing movement of the printing head and to release SUMMARY OF THE INVENTION
  • the primary object of the present invention is to provide a device for controlling the movement of the printing head in printers of simple construction for which it is easy to design and machine the component parts.
  • This object can be attained, according to the present invention, by pivotably mounting an operating lever which can be rotated in only one direction on a swingable printing head, engaging said operating lever with a cam plate arranged along the path for movement of the printing head, and controlling the movement of the printing head by said cam plate through said operating lever.
  • Said cam plate has a cam portion serving to push the printing head to the platen and a cam portion serving to release the printing head from the platen.
  • the printing head has a spring for pushing the printing head toward the platen.
  • reference numeral l designates a pair of guide shafts supported by a body frame of a printer which is not illustrated here.
  • Numeral 2 designates a head base slidably mounted on guide shafts l and reciprocated by a mechanism not illustrated here.
  • Said head base has a pair of upright arms 2:: and a pin 211 secured to the bottom thereof.
  • Numeral 3 designates a printing head having a printing portion 3a and protruberances 3b and 30. As the protruberance 3b is pivotably mounted to arms 2a by a shaft 4, the printing head 3 is pivotably supported by the head base 2 for movement between a first printing position and a second non-printing position.
  • Numeral 5 designates a first spring provided between the pin 2b and printing head 3 and urging the printing head clockwise.
  • Numeral 6 designates an operating lever pivotably mounted on the printing head 3 and having a bent portion 6a which engages with the side portion of the printing head.
  • Numeral 8 designated a pin secured to the operating lever 6.
  • Numeral 9 designates a second spring wound around a shaft 7, both ends of said spring 9 being respectively hooked to the pin 8 and the side portion of the printing head 3. The spring 9 urges the operating lever 6 clockwise.
  • Numeral l0 designates a cam plate attached to the body frame in parallel with guide shaftsl and hav. ing a cam surface 10A to be engaged with the pin 8.
  • the cam surface 10A comprises a high portion 1011, low portions 10b and 10b, step portion and slope portion 10d.
  • the printing portion 3a of the printing head 3 is facing the platen not illustrated here through a paper to be printed and the drawing showsthe condition that the printing portion 3a is pushed against the platen. i.e., the condition that the printing head 3 is held in the printing position.
  • the operating lever 6 turned counterclockwise around the shaft 7, against the force of the spring 9, by means of the step portion 10c and serves to pull up the pin 8 from the low portion 10b of the cam surface 10A to the high portion 10a.
  • the pin 8 is placed on the high portion 10a of the cam surface 10A and is moved leftward sliding along the high portion 104:.
  • the printing head 3 is moved leftward with the printing portion 3a kept as released from the platen.
  • the pin 8 is first raised from the low portion 10b of the cam surface 10A to the high portion 10a passing through the slope portion 10d.
  • the operating lever 6 is subjected to a force to turn clockwise.
  • the bent portion 6a engages with the side face of the printing head 3, the operating lever 6 cannot be turned clockwise. Consequently, said clockwise force works as a force to turn the printing head 3 counterclockwise resisting against tension of the spring 5.
  • the printing head 3 is brought to the condition that the printing portion 3a is pushed against the platen through the printing paper when the pin 8 reaches the high portion 10a of the cam surface 10A. This pushed condition is kept as it is as far as the pin 8 is kept on the high portion 100 of the cam surface 10A during the rightward movement of the head base 2.
  • the spring 5 is used for releasing the printing head 3 from the platen.
  • a device for controlling the movement of a printing head comprising:
  • a printing head having a printing portion thereon and movable along a recording surface of a recording paper faced to said printing portion and also rotatable about an axis extending parallel to said recording surface between a first position with said printing portion contacting said recording surface and a second position with said printing portion removed from said recording surface.
  • cam plate having a slope portion at one end thereof engageable with said operating lever for moving said printing head against the bias of said first spring from said second position to said first position

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  • Common Mechanisms (AREA)
  • Handling Of Sheets (AREA)
  • Electronic Switches (AREA)
  • Electrophotography Using Other Than Carlson'S Method (AREA)
US410559A 1972-11-01 1973-10-29 Device for controlling the movement of the printing head in printers Expired - Lifetime US3881587A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1972126456U JPS5227630Y2 (de) 1972-11-01 1972-11-01

Publications (1)

Publication Number Publication Date
US3881587A true US3881587A (en) 1975-05-06

Family

ID=14935659

Family Applications (1)

Application Number Title Priority Date Filing Date
US410559A Expired - Lifetime US3881587A (en) 1972-11-01 1973-10-29 Device for controlling the movement of the printing head in printers

Country Status (3)

Country Link
US (1) US3881587A (de)
JP (1) JPS5227630Y2 (de)
DE (1) DE2354137C2 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3987883A (en) * 1975-04-17 1976-10-26 International Business Machines Corporation Ribbon lifting mechanism for a wire matrix printer
US4050568A (en) * 1975-12-05 1977-09-27 Sperry Rand Corporation Stylus carriage drive
US4170422A (en) * 1975-02-03 1979-10-09 Texas Instruments Incorporated Printhead alignment mechanism
US4300844A (en) * 1979-08-22 1981-11-17 Hewlett-Packard Company Moving head printer mechanism
US4911567A (en) * 1987-07-06 1990-03-27 Seiko Instruments Inc. Print head press-contact device
US5672017A (en) * 1995-06-16 1997-09-30 Alps Electric Co., Ltd. Thermal printer

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS529443A (en) * 1975-07-11 1977-01-25 Sharp Corp Driving device of printer head
JPS5321608A (en) * 1976-08-10 1978-02-28 Nippon Electric Co Automatic printing media thickness sensor
JPS5633717Y2 (de) * 1976-11-30 1981-08-10
KR910008218B1 (ko) * 1989-11-30 1991-10-12 삼성전자 주식회사 비디오 프린터의 칼라 기록장치

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2829592A (en) * 1954-12-30 1958-04-08 Ibm Print actuating member control mechanism
US2851141A (en) * 1955-06-20 1958-09-09 Ibm Wire printing typewriter
US3300017A (en) * 1965-04-30 1967-01-24 Sperry Rand Corp Electrosensitive printing apparatus with print head continuously moved across paper
US3313389A (en) * 1963-09-25 1967-04-11 Ibm Constant torque drive means for typewriter
US3592311A (en) * 1968-10-02 1971-07-13 Ibm Wire printing head

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3646570A (en) * 1970-02-13 1972-02-29 Scope Inc Printing head mechanism

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2829592A (en) * 1954-12-30 1958-04-08 Ibm Print actuating member control mechanism
US2851141A (en) * 1955-06-20 1958-09-09 Ibm Wire printing typewriter
US3313389A (en) * 1963-09-25 1967-04-11 Ibm Constant torque drive means for typewriter
US3300017A (en) * 1965-04-30 1967-01-24 Sperry Rand Corp Electrosensitive printing apparatus with print head continuously moved across paper
US3592311A (en) * 1968-10-02 1971-07-13 Ibm Wire printing head

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4170422A (en) * 1975-02-03 1979-10-09 Texas Instruments Incorporated Printhead alignment mechanism
US3987883A (en) * 1975-04-17 1976-10-26 International Business Machines Corporation Ribbon lifting mechanism for a wire matrix printer
US4050568A (en) * 1975-12-05 1977-09-27 Sperry Rand Corporation Stylus carriage drive
US4300844A (en) * 1979-08-22 1981-11-17 Hewlett-Packard Company Moving head printer mechanism
US4911567A (en) * 1987-07-06 1990-03-27 Seiko Instruments Inc. Print head press-contact device
US5672017A (en) * 1995-06-16 1997-09-30 Alps Electric Co., Ltd. Thermal printer
CN1073940C (zh) * 1995-06-16 2001-10-31 阿尔卑斯电气株式会社 热敏打印机

Also Published As

Publication number Publication date
JPS4980629U (de) 1974-07-12
DE2354137C2 (de) 1983-06-01
DE2354137A1 (de) 1974-05-09
JPS5227630Y2 (de) 1977-06-23

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