EP0013720B1 - Steuervorrichtung für den Papiereinzug an einer Schreibwalze - Google Patents

Steuervorrichtung für den Papiereinzug an einer Schreibwalze Download PDF

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Publication number
EP0013720B1
EP0013720B1 EP79104887A EP79104887A EP0013720B1 EP 0013720 B1 EP0013720 B1 EP 0013720B1 EP 79104887 A EP79104887 A EP 79104887A EP 79104887 A EP79104887 A EP 79104887A EP 0013720 B1 EP0013720 B1 EP 0013720B1
Authority
EP
European Patent Office
Prior art keywords
driving means
platen
cam
paper
channel
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
Application number
EP79104887A
Other languages
English (en)
French (fr)
Other versions
EP0013720A1 (de
Inventor
Ronald Eugene Hunt
Ernest George Souliere
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of EP0013720A1 publication Critical patent/EP0013720A1/de
Application granted granted Critical
Publication of EP0013720B1 publication Critical patent/EP0013720B1/de
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
    • B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/26—Registering devices
    • 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
    • B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/02—Rollers
    • B41J13/03—Rollers driven, e.g. feed rollers separate from platen

Definitions

  • the present invention relates generally to the handling of paper in a printer with a cylindrical platen and more particularly a device for controlling the alignment of the paper, of the supply thereof by the rear and front rollers cooperating with the platen and opening and closing the paperweight rod.
  • control structure does not bear any resemblances to that described in said publication.
  • device that can be controlled by said control structure is different from said publication.
  • This mechanism of the prior art although it facilitates the operation of the feed rollers when the operator has to place a sheet in the machine, does not facilitate or automate the various other operations necessary for the establishment of the sheet.
  • the positioning of the sheet requires the execution, in a well-determined sequence, of various other operations, such as aligning the paper with respect to the platen, removing the paperweight rod, the rotation of the platen to advance the paper to the first printing line and the replacement of the paperweight rod.
  • the subject of the present invention is a device by which the operations necessary for placing the sheet of paper in a typewriter or printer are carried out automatically in the appropriate sequence, the only tasks remaining to be performed manually by the operator being the introduction of the sheet of paper until its front edge abuts on an alignment member and the operation of a control button which triggers the appropriate sequence of operations necessary for the establishment of the sheet of paper.
  • the device according to the present invention comprises, as is the case for the device described in the aforementioned document US-A-2 121 853, a cylindrical plate selectively driven in rotation by a first drive means, as well as rollers of 'front and rear power supply mounted. on a cradle which can pivot to bring the rollers in contact with the plate or move them away from it.
  • the cradle is driven by a second drive means by means of coupling means.
  • a control button, or cycle initiating means allows the operator to initiate an operating cycle of the second drive means, a cycle during which the roller cradle moves from a first to a second position and returns to its first position.
  • the control device is formed of a modular unit 1 ( Figure 1) and a flexible comb 20 ( Figure 2).
  • Unit 1 is mounted at one end of the chassis 2 of a printer by means of a support 3 which also carries a drive motor 4 having a motion transmission shaft 5 with worm screw 6.
  • the support 3 carries also an axis 7 on which a pinion 8 with cam is rotatably mounted.
  • the pinion 8 has teeth 9, on its periphery, which mesh with the endless screw 6.
  • the front face of the pinion 8 comprises an integral cam 10 whose guide surface 11 is intended to control the paperweight rod.
  • the outer face of the cam 10 has a stud 19 which projects in the vicinity of its outer periphery.
  • This stud 19 is movable in a buttonhole 12 formed in an arm 13 of the flexible comb 20.
  • the lower end of the arm 13 is fixed to a rod 14 rotatably mounted in the chassis of the printer 2.
  • the rod 14 is an element of the flexible comb 20 which has teeth 15, 16, 17, etc. (see Figure 8).
  • the rod 14 has a groove 18 in which is fixed a flexible blade in which are cut radial tongues forming the teeth 15, 16, 17, etc. of the flexible comb 20.
  • An axis 21 is mounted in the printer chassis 2.
  • An arm 22 is pivotally mounted on the axis 21 and includes a cam follower 23 whose end follows the guide surface 11 of the cam pinion 8 for driving the arm 22 in rotation in a first and in a second direction.
  • the arm 22 and the rod 21 are not mounted on the support 3.
  • An axis 25, oriented towards the outside, is mounted in the upper part 24 of the support 3 and carries the arm 26 of a rocking button 31 and a restoration spring 27.
  • a support 28 of the rocking button, comprising contact surfaces 29 and 30 is integral with the upper part of the arm 26.
  • the tilting button 31 is mounted on the upper part of the support 28.
  • the spring 27 is biased by one of the surfaces 29 or 30 along the end 32 or 33 which has been pressed in by the operator.
  • the spring 27 recalls the arm 26 and the rocking button 31 in their position shown.
  • An axis 34 oriented towards the outside is also mounted on the support 3 and passes through a curved buttonhole 35 formed in the arm 26.
  • This buttonhole 35 is located below the axis 25 and its ends 36 and 36 limit tilting or the rotation of the control button 31 and of the arm 26.
  • a shunt leg 38 and a magnet-carrying leg 39 are integral with the arm 26.
  • a permanent magnet 41 is fixed to an outer end 40 of the leg 39.
  • the support 3 also carries a switching assembly 42 on which are mounted blade switches 43 and 44.
  • the blade switches 43 and 44 are connected to the input / output conductors 45, 46 and 47.
  • signals are applied to conductors 45, 46 and 47 to start and stop the motor 4 and to start and stop a drive motor not shown. These two motors are activated at different times.
  • a curved magnet 80 is embedded in the rear face of the pinion 8 and can be positioned, by the rotation of said pinion 8 relative to the reed switch 43 to cut the motor 4 and start the platen drive motor.
  • the comb 20 is designed to be installed in a device 50.
  • the device 50 is composed of a platinum cradle 51 and yokes such as 52 and 53 which are identical; we therefore only describe the yoke 52.
  • the yoke 52 is integral with the cradle 51 and has two legs 54 and 55 oriented downward which form between them a passage 56 provided for receiving an axis 57 whose ends are mounted in the chassis d printer 2.
  • the device 50 rotates around the axis 57 under the action of the teeth 15 of the comb 20 coming into contact with the contact surfaces 58 and 59 of the legs 54 and 55.
  • the cradle 51 has three windows.
  • the front feed roller 60 is arranged in one of them and in another is arranged the rear feed roller 61.
  • a paper alignment unit 62 can be arranged in the third window of the cradle 51.
  • a element 63 oriented downwards is fixed to the cradle 51 and carries an axis 64 on which a reference 65 is rotatably mounted.
  • the paper alignment element 62 is integral with the reference 65 which has a leg 66 oriented downwards which has a contact surface 67 which is biased by the tooth 16 to cause the positioning of the paper alignment element 52 with respect to the printer platen 68.
  • the front feed roller 60 is arranged so as to cause the application of the paper 71 against the platen 68. So that the roller 60 is in this position; the comb 20 must have been rotated counterclockwise and the tooth 15 must be in contact with the surface 58. In this position of the tooth 15, the device 50 is kept in the position of FIG. 4 At this instant, the alignment element 62 is in contact with the paper 71 and presses it against the plate 68. After the sheet 71 has been advanced to the first writing line, another sheet 72 can be inserted into the printer from the back of the plate 68.
  • the second clockwise arc allows the tooth 15 to come into contact with the surface 59 and causes the device 50 to rotate counterclockwise.
  • the rear feed roller 61 is driven towards the platen 58 to cause the application of the paper 71 against said platen 68.
  • the third arc of rotation in the clockwise direction of the comb 20 allows the tooth 16 to come in contact with the surface 67 of the leg 66 of the reference 65 to separate the alignment element 62 'from the plate 68.
  • the first arc of counterclockwise rotation of the comb 20 after its third arc of clockwise rotation causes the tooth 16 to separate from the surface 67.
  • the alignment element 62 is released or authorized to move towards the plate 68 under the stress of a spring not shown.
  • the second counter-clockwise rotation arc of the comb 20 causes the tooth 15 to separate from the surface 59, which allows the roller 61 to be moved away from the plate 58.
  • the third anti-clockwise rotation arc -comb of the comb 20 brings the tooth 15 into contact with the surface 58 to apply the front feed roller 60 against the plate 68 and thus cause the contact of the paper 71 and the plate.
  • the rear feed roller 61 is removed from the stage 68 and the alignment element 62 is in contact with it. This allows the front edge 73 of the sheet 71 to pass between the roller 61 and the plate 68.
  • the front edge 73 is brought into abutment against the element ' 62 to align the sheet 71. After aligning the edge front 73 against the alignment element 62, this must be distant from the plate 68 to allow a continuous passage for the sheet 71 around the plate 68.
  • the rear feed roller 61 must be applied against the plate 68 to cause the sheet 71 and said plate 68 to come into contact. Then, the plate 68 is rotated until the front edge 73 has passed the feed roller before 60 and the sheet 71 is arranged at the first printing line. After the paper 71 has thus been advanced, the alignment member 62 is pressed against the platen 68 to hold the sheet 71 in position while the rear feed roller 61 is away from the platen 68 and the front roller 60 is applied against it. The application of the front roller 60 against the platen 68 causes the sheet 71 to contact the platen and allows the sheet to be fed during printing.
  • the first table A relates to a paper loading operation which begins with the introduction of the paper and ends with the positioning of said paper at the first printing line.
  • the second table B relates to an operation for removing the paper from the platen to allow the execution of an adjustment by the operator or the removal of the paper from the printer.
  • the initial loading operation begins with the introduction of a sheet of paper 71 into the printer from the rear of the platen 68.
  • the alignment element paper 62 must be in contact with the plate 68 and the rear feed roller 61 must be released from the latter.
  • the advent edge 73 of the latter is therefore aligned against the alignment element 62.
  • the end 33 of the rocking button 31 is momentarily depressed, which causes the switch to close.
  • the rotation of the motor 4 drives the comb 20 in a clockwise rotation to apply the rear roller 61 against the plate 68 in order to cause the paper to be tightened 71 against the plate 68.
  • the alignment element 62 will be released from the plate 68.
  • the rotation of the pinion 8 continues until the magnet 80 embedded in the rear side of the pinion 8 arrives in a position causing the opening of the reed switch 43, which cuts the motor 4 and causes the application of signals to lines 45 to 47 towards a motor for driving in rotation of the plate 68.
  • the plate is driven in rotation on a certain arc by a stepping motor, a servomotor or other similar motor e, until the front edge 73 has advanced sufficiently to allow the printing of the first line on the sheet 71.
  • the drive motor of the stage is then stopped and a signal or signals are again applied by lines 45 to 47 to restart the motor 4.
  • the paperweight rod 74 fixed to the arm 22 has been rotated counterclockwise around the axis 21 to release it from the plate 68.
  • the paperweight rod 74 must be engaged against the plate 68 to apply the front part 81 of the sheet 71 on the plate 68.
  • FIGS. 3 and 4 The position and the state of the elements composing the device of the present invention at the moment when the plate 68 is rotated to advance the front part 81 to a first writing line, are shown in Figures 5 and 6.
  • the elements s making up the device of the present invention must be in the positions and states shown in FIGS. 3 and 4 for feeding by the front roller of the sheet 71 during the rotation of the plate 68 for printing.
  • Table B describes en detait a paper release operation for which the front feed rollers 60 and rear 61 must be released from the plate 68.
  • the positions and states of the elements making up the device of the present invention should be those of the figures 1 and 2. The order of operations is noted in parentheses in the table.
  • the motor 4 is started for a predetermined time, then it is switched off. This is due to the application of a signal or signals on lines 45 to 47. This operating period is determined by logic not shown. Similarly, a logic which is not shown controls the starting of the drive motor of the plate on a given arc, then, in sequence, the restarting of the motor 4.

Landscapes

  • Handling Of Cut Paper (AREA)
  • Handling Of Sheets (AREA)

Claims (5)

1. Steuervorrichtung zum Zuführen eines Papierbogens (71) in einen Drucker, bestehend aus: einer zylinderförmigen Schreibwalze (68), die durch ein erstes Antriebsmittel wahlweise angetrieben wird, vordere und hintere Papierführungsrollen (60, 61), die mit einem Positionssteuermittel (50) gekuppelt sind, um sie selektiv in Kontakt mit der Schreibwalze (68) zu bringen oder abzuheben, wobei die Rollen in einem Rollenträger (51) geführt sind, der schwenkbar zu Schreibwalze (68) angeordnet ist, einem zweiten Antriebsmittel (4), das mit dem Positionssteuermittel (50) verbunden ist, um letzteres zu verschieben, einem vom Bediener betätigbaren Auslösehebel (31), um einen Operationszyklus des zweiten Antriebsmittels (4) auszulösen, und Kupplungsmittel (8, 19, 13, 14, 20) zum Kuppeln des Rollenträgers (51) an das zweite Antriebsmittel (4) für den Übergang von der ersten in die zweite Position und für seine Rückkehr in die erste Position im Laufe eines Operationszyklus des zweiten Antriebsmittels (4), dadurch gekennzeichnet,
daß ein Papierhaltebügel (74) beweglich zwischen einer ersten Position, in der er in Kontakt mit der Schreibwalze (68) ist, und einer zweiten Position, in der er davon abgehoben ist, angeordnet ist,
daß der Rollenträger (51) schwenkbar zur Schreibwalze (68) angeordnet ist, zwischen einer ersten Position, in der die vorderen Papierführungsrollen (60) in Kontakt mit der Schreibwalze (68) stehen, während die hinteren Papierführungsrollen (61) abgehoben sind, und einer zweiten Position, in der die betreffenden Positionen der Papierführungsrolle umgekehrt sind,
daß ein Ausrichtmittel (62) für die Vorderkante (73) des Papierbogens (71) auf dem Rollenträger (51) angeordnet ist, zur Einstellung in eine erste Position, in der es im Bereich zwischen den vorderen und hinteren Zuführrollen (60,61), in Kontakt mit der Schreibwalze (68) ist, und eine zweite Position, wo es von der Schreibwalze (68) abgehoben ist, wobei das Ausrichtmittel (62) in seine erste Position zurückfedert und mit den Kupplungsmitteln (8, 19, 13, 14, 20) verbunden ist, um von den letzteren in seine zweite Position gebracht zu werden, sobald der Rollenträger (51) in seine zweite Position gebracht ist,
daß der Papierhaltebügel (74) mit einer Nocke (10) verbunden ist, die von dem zweiten Antriebsmittel (4) in Drehung versetzt wird, wobei die Nocke (10) aufeinanderfolgend den Übergang des Papierhaltebügels (74) von seiner ersten in seine zweite Position und seine Rückkehr in die erste Position während eines Operationszyklus des zweiten Antriebsmittels (4) auslöst,
daß Schaltmittel (43, 44, 80) angeordnet sind, die mit der Nocke (10) und dem zweiten Antriebsmittel (4) verbunden sind und die bei Ankunft der Nocke (10) in einer vorbestimmten Endstellung während eines Operationszyklus des zweiten Antreibsmittels (4) das Anhalten des letzteren steuert, wobei die vorbestimmte Position der Nocke (10) der zweiten Position des Rollenträgers (51), des Ausrichtelements (62) und des Papierhaltebügels (74) entspricht,
daß logische Elemente vorgesehen sind, welche beim Anhalten des zweiten Antriebsmittels (4) wirksam werden, das das erste Antriebsmittel steuert, so daß dieses die Schreibwalze (68) über einen vorbestimmten Drehwinkel antreibt, und sobald der Bogen durchlaufen ist, den Stillstand des ersten Antriebsmittels und die Wiederaufnahme des Zyklus des zweiten Antriebsmittels (4) steuert.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Kupplungsmittel (8, 19, 13, 14, 20) zum Kuppeln des Rollenträgers (51) an das zweite Antriebsmittel (4) bestehen aus: einem durch das zweite Antriebsmittel (4) in Drehung versetztes Getrieberad (8), einen fest mit der Peripherie des Getrieberades (8) verbundenen Zapfen (19), einen Arm (13) mit einer Aussparung (12), in der sich der Zapfen (19) bewegt, wobei ein Ende des Arms (13) auf einem drehbar auf dem Druckergestell (2) angebrachten Stab (14) angeordnet ist, und ein Element (20), das mit dem Stab (14) fest verbunden ist, um die Bewegung des letzteren an den Rollenträger (51) zu übertragen.
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Nocke (10) auf dem Getrieberad (8) befestigt ist.
4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß der Papierhaltebügel (4) auf einem Arm (22) befestigt ist, der in Bezug auf das Druckergestell (2) drehbar ist, wobei der Arm (22) ein mit der Nocke (10) zusammenwirkendes Nockenfolgeelement (23) aufweist.
5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Schaltmittel (43, 44, 80) wenigstens einen normalerweise geschlossenen Reedschalter (43) und einen auf dem Getrieberad (8) befestigten Magneten (80) aufweisen, wobei der Magnet (80) die Öffnung des normalerweisen geschlossenen Schalters (43) und das Anhalten des Zyklus des zweiten Antriebsmittels (4) bewirkt, sobald die Nocke (10) in der vorgegebenen Endstellung ankommt.
EP79104887A 1978-12-26 1979-12-04 Steuervorrichtung für den Papiereinzug an einer Schreibwalze Expired EP0013720B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US973360 1978-12-26
US05/973,360 US4211499A (en) 1978-12-26 1978-12-26 Paper feeding control apparatus

Publications (2)

Publication Number Publication Date
EP0013720A1 EP0013720A1 (de) 1980-08-06
EP0013720B1 true EP0013720B1 (de) 1982-05-05

Family

ID=25520814

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79104887A Expired EP0013720B1 (de) 1978-12-26 1979-12-04 Steuervorrichtung für den Papiereinzug an einer Schreibwalze

Country Status (6)

Country Link
US (1) US4211499A (de)
EP (1) EP0013720B1 (de)
JP (1) JPS5587587A (de)
CA (1) CA1128450A (de)
DE (1) DE2962744D1 (de)
IT (1) IT1162597B (de)

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EP0063588B1 (de) * 1980-11-04 1986-04-09 Wang Laboratories Inc. Durch die obere papierandruckschiene gesteuerte papierzuführ- und -fördereinrichtung
DE3209085C2 (de) * 1981-03-17 1986-03-27 Canon K.K., Tokio/Tokyo Papierzufuhrmechanismus
JPS5816874A (ja) * 1981-07-24 1983-01-31 Ricoh Co Ltd プリンタ
IT1155264B (it) * 1982-02-03 1987-01-28 Olivetti & Co Spa Introduttore di documenti
JPS5939574A (ja) * 1982-08-30 1984-03-03 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション ベイル開閉装置
US4714364A (en) * 1984-08-10 1987-12-22 Ricoh Company, Ltd. Automatically returned paper ball assembly of a printer
JPS61132361A (ja) * 1984-11-30 1986-06-19 Tokyo Juki Ind Co Ltd 印字装置における印字用紙送り機構
JPS6397909A (ja) * 1986-10-08 1988-04-28 ジーティーイー・コントロール・デバイセズ・オブ・プエルトリコ・インコーポレイテッド フアイバオプチツク　スプライスアツセンブリ
US4988224A (en) * 1986-10-09 1991-01-29 Genicom Corporation Universal ribbon cartridge for high-speed printers
CH689277A5 (fr) * 1993-09-10 1999-01-29 Ocd Sa Dispositif d'introduction de feuilles.
KR100472482B1 (ko) * 2002-11-27 2005-03-09 삼성전자주식회사 기록매체의 배출기구 및 그를 구비한 잉크젯 프린터
GB2422764A (en) 2005-02-07 2006-08-09 Advanced Engineering Tech Ltd Grass treatment apparatus having removable cassette
CN108778971B (zh) 2016-04-15 2021-01-22 惠普发展公司，有限责任合伙企业 旋转和摆动的压纸杆臂

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US1874256A (en) * 1930-05-01 1932-08-30 Underwood Elliott Fisher Co Typewriting machine
US1969773A (en) * 1932-01-15 1934-08-14 L C Smith & Corona Typewriters Typewriting machine
US2121853A (en) * 1936-12-04 1938-06-28 Burroughs Adding Machine Co Typewriter
US2881893A (en) * 1954-10-28 1959-04-14 Standard Register Co Strip feeding device
US2864484A (en) * 1955-03-01 1958-12-16 Standard Register Co Strip feeding mechanism
US3223221A (en) * 1963-03-13 1965-12-14 Royal Typewriter Co Inc Paper handling mechanism
JPS5026611B2 (de) * 1972-09-12 1975-09-02
JPS6021869B2 (ja) * 1976-04-12 1985-05-29 エプソン株式会社 紙送り機構
JPS5492408A (en) * 1977-12-28 1979-07-21 Ricoh Kk Paper supplying apparatus of letter printing apparatus

Also Published As

Publication number Publication date
CA1128450A (en) 1982-07-27
DE2962744D1 (en) 1982-06-24
IT7927809A0 (it) 1979-12-04
US4211499A (en) 1980-07-08
EP0013720A1 (de) 1980-08-06
IT1162597B (it) 1987-04-01
JPS5753193B2 (de) 1982-11-11
JPS5587587A (en) 1980-07-02

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