EP0033226A2 - Mécanisme de sélection de caractères pour imprimantes en série - Google Patents

Mécanisme de sélection de caractères pour imprimantes en série Download PDF

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Publication number
EP0033226A2
EP0033226A2 EP81300288A EP81300288A EP0033226A2 EP 0033226 A2 EP0033226 A2 EP 0033226A2 EP 81300288 A EP81300288 A EP 81300288A EP 81300288 A EP81300288 A EP 81300288A EP 0033226 A2 EP0033226 A2 EP 0033226A2
Authority
EP
European Patent Office
Prior art keywords
shaft
character
selecting mechanism
thimble
print
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.)
Granted
Application number
EP81300288A
Other languages
German (de)
English (en)
Other versions
EP0033226B1 (fr
EP0033226A3 (en
Inventor
Shigemitsu Matsumori
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
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 filed Critical NEC Corp
Publication of EP0033226A2 publication Critical patent/EP0033226A2/fr
Publication of EP0033226A3 publication Critical patent/EP0033226A3/en
Application granted granted Critical
Publication of EP0033226B1 publication Critical patent/EP0033226B1/fr
Expired 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
    • B41J7/00—Type-selecting or type-actuating mechanisms
    • B41J7/50—Type-face selected by combinations of two movements of type carrier
    • B41J7/52—Type-face selected by combinations of two movements of type carrier by combined rotary and sliding movement

Definitions

  • This invention relates to a character selecting mechanism for a print head for a aerial printer and it has particular, though not exclusive, application to a print head comprising a petal-type print thimble.
  • the invention is particularly concerned with a character selecting mechanism which can be used for selecting one from two characters each arranged at a different distance along the length of a print head.
  • a petal-type print thimble comprises cylindrically disposed fingers on each of which two characters are arranged vertically one above the other. For character selection, the print thimble is rotated bi-directionally and/or it is moved vertically to select the character.
  • a mechanical movement must be carried out in both the rotational and the vertical directions, using, for example, a servomotor and a magnet.
  • the print thimble is arranged on a torque-transmission mechanism including a slide sleeve assembly and a spline shaft, so as to enable the thimble to be rotated under the control of the servomotor and to be moved vertically under the control of the magnet.
  • the torque-transmission mechanism is complicated and it includes parts which are delicate and difficult to manufacture. Any slackness of the torque-transmission mechanism results in a deterioration of the positioning of a character.
  • the magnet selects one of two predetermined print positions (up and down) of the thimble.
  • a position other than those determined by the two predetermined print positions of the thimble for example where H 2 0 or H 2 is to be printed
  • minute shifting of the paper is very difficult.
  • the vertical positions of umlauts ( ⁇ ) for a capital and a small letter are different from each other there is a further problem. It is impossible with the previously proposed printer to use a single umlaut type or character element for both a capital and a small letter, unless the previously mentioned minute shifting of the printing paper is carried out.
  • a character selecting mechanism for a serial printer having a print head incorporating a plurality of characters arranged radially about an axis thereof, characterised in that the said selecting mechanism comprises a driving motor for rotating the said print thimble connected to a shaft of the said driving motor and a longitudinal movement selecting means for moving the said shaft axially.
  • a type carriage assembly 100 for a serial printer includes a print head incorporating a petal-type print thimble 3.
  • the print thimble 3 has sixty four fingers 15 arranged cylindrically.
  • Two characters 14 are arranged vertically on, i.e. at different distances along, each finger, allowing for a total of one hundred and twenty eight characters on the print thimble 3.
  • the print thimble 3 is mountedm a mounting member 4, which is secured with a shaft 5 of a servomotor 1, in the form, for example, of a stepping motor.
  • the servomotor 1 drives the mounting member 4 which in turn rotates the print thimble 3 to the desired finger position.
  • a longitudinal movement or vertical selecting means 2 is provided below the servomotor 1.
  • a print hammer (not shown) is incorporated in such a way that its action strikes the inside wall of a finger 15 of the print thimble 3.
  • the print hammer carries a magnet.
  • a solenoid driver (not shown)
  • the hammer is driven in free flight and strikes the finger 15 of the selected print thimble character 14.
  • the hammer is reseated in its original position by virtue of the reaction produced by a recoil force, together with the force exerted by the magnet.
  • the stepping motor 1 comprises a stator 6, a rotor 7 secured to the shaft 5, and bearings 8 and 9 for supporting the shaft 5.
  • the shaft 5 carrying the rotor 7 is not only able to rotate but it is also able to move vertically.
  • the longitudinal or vertical selecting means 2 incorporates, for example, a stepping motor having a rotor and a stator and a shaft 10 which is connected to a cam 11.
  • a roller 12 provided on the shaft 5 contacts the cam 11 in order to minimise the effects of friction.
  • Rotation of the cam 11 moves the shaft 5 vertically by a distance defined by the angle of rotation of the cam 11.
  • a difference in distance between the uppermost and the lowermost positions of the shaft 5 corresponds to the pitch of the vertically disposed characters 14 on the finger 15.
  • a spring 13 provided in the stepping motor 1 urges the shaft 5 towards the cam 11.
  • the print thimble 3 may be positioned, with a high degree of accuracy, at a position determined by the stepping number of the stepping motor 2.

Landscapes

  • Character Spaces And Line Spaces In Printers (AREA)
EP19810300288 1980-01-23 1981-01-22 Mécanisme de sélection de caractères pour imprimantes en série Expired EP0033226B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP646780A JPS5928473B2 (ja) 1980-01-23 1980-01-23 活字選択機構
JP6467/80 1980-01-23

Publications (3)

Publication Number Publication Date
EP0033226A2 true EP0033226A2 (fr) 1981-08-05
EP0033226A3 EP0033226A3 (en) 1982-05-05
EP0033226B1 EP0033226B1 (fr) 1985-06-19

Family

ID=11639248

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810300288 Expired EP0033226B1 (fr) 1980-01-23 1981-01-22 Mécanisme de sélection de caractères pour imprimantes en série

Country Status (3)

Country Link
EP (1) EP0033226B1 (fr)
JP (1) JPS5928473B2 (fr)
DE (1) DE3170969D1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4389126A (en) * 1980-06-27 1983-06-21 Nippon Electric Co., Ltd. Serial impact printer having two printing modes
EP0107169A2 (fr) * 1982-10-18 1984-05-02 Nec Corporation Mécanisme pour imprimante en série, destiné à sélectionner des caractères et à faire avancer un ruban à encre
WO1985000320A1 (fr) * 1983-07-05 1985-01-31 Burroughs Corporation Imprimante a impact a roue d'impression serielle
GB2149354A (en) * 1983-11-10 1985-06-12 Epson Corp Printer
WO1985003255A1 (fr) * 1984-01-20 1985-08-01 Varitronic Systems, Inc. Systeme de positionnement d'un disque d'impression
US4600324A (en) * 1982-11-12 1986-07-15 Nec Corporation Print thimble recognizing system for a serial printer
US4653944A (en) * 1984-06-06 1987-03-31 Nec Corporation Character selecting mechanism for a serial printer
US4828410A (en) * 1983-07-05 1989-05-09 The Standard Register Company Serial print wheel impact printer
US8250719B2 (en) 2009-03-03 2012-08-28 The Clorox Company Multiple layer absorbent substrate and method of formation

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6171936A (ja) * 1984-09-17 1986-04-12 N T Tool Kk 刃具等の保持具
JPH0540953Y2 (fr) * 1985-06-21 1993-10-18
JPS63153836A (ja) * 1986-12-17 1988-06-27 Mitsubishi Electric Corp 半導体組立装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3695410A (en) * 1970-02-04 1972-10-03 I Q Devices Inc Serial printing machine
FR2281224A1 (fr) * 1974-08-06 1976-03-05 Zentronik Veb K Dispositif d'impression
FR2331444A1 (fr) * 1975-11-13 1977-06-10 Zentronik Veb K Dispositif pour regler deux plans d'impression d'un porte-caracteres

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3695410A (en) * 1970-02-04 1972-10-03 I Q Devices Inc Serial printing machine
FR2281224A1 (fr) * 1974-08-06 1976-03-05 Zentronik Veb K Dispositif d'impression
FR2331444A1 (fr) * 1975-11-13 1977-06-10 Zentronik Veb K Dispositif pour regler deux plans d'impression d'un porte-caracteres

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4389126A (en) * 1980-06-27 1983-06-21 Nippon Electric Co., Ltd. Serial impact printer having two printing modes
EP0107169A2 (fr) * 1982-10-18 1984-05-02 Nec Corporation Mécanisme pour imprimante en série, destiné à sélectionner des caractères et à faire avancer un ruban à encre
US4509872A (en) * 1982-10-18 1985-04-09 Nec Corporation Character selecting and inked ribbon feeding mechanism for a serial printer
EP0107169B1 (fr) * 1982-10-18 1988-07-13 Nec Corporation Mécanisme pour imprimante en série, destiné à sélectionner des caractères et à faire avancer un ruban à encre
US4600324A (en) * 1982-11-12 1986-07-15 Nec Corporation Print thimble recognizing system for a serial printer
WO1985000320A1 (fr) * 1983-07-05 1985-01-31 Burroughs Corporation Imprimante a impact a roue d'impression serielle
US4828410A (en) * 1983-07-05 1989-05-09 The Standard Register Company Serial print wheel impact printer
GB2149354A (en) * 1983-11-10 1985-06-12 Epson Corp Printer
WO1985003255A1 (fr) * 1984-01-20 1985-08-01 Varitronic Systems, Inc. Systeme de positionnement d'un disque d'impression
US4544289A (en) * 1984-01-20 1985-10-01 Varitronic Systems, Inc. Print disk positioning system
US4653944A (en) * 1984-06-06 1987-03-31 Nec Corporation Character selecting mechanism for a serial printer
US8250719B2 (en) 2009-03-03 2012-08-28 The Clorox Company Multiple layer absorbent substrate and method of formation

Also Published As

Publication number Publication date
EP0033226B1 (fr) 1985-06-19
JPS56104079A (en) 1981-08-19
JPS5928473B2 (ja) 1984-07-13
EP0033226A3 (en) 1982-05-05
DE3170969D1 (en) 1985-07-25

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