EP0013720A1 - Steuervorrichtung für den Papiereinzug an einer Schreibwalze - Google Patents

Steuervorrichtung für den Papiereinzug an einer Schreibwalze Download PDF

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Publication number
EP0013720A1
EP0013720A1 EP79104887A EP79104887A EP0013720A1 EP 0013720 A1 EP0013720 A1 EP 0013720A1 EP 79104887 A EP79104887 A EP 79104887A EP 79104887 A EP79104887 A EP 79104887A EP 0013720 A1 EP0013720 A1 EP 0013720A1
Authority
EP
European Patent Office
Prior art keywords
paper
plate
rotation
paperweight
rod
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
EP79104887A
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English (en)
French (fr)
Other versions
EP0013720B1 (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 of the paperweight rod.
  • control structure does not bear any resemblances to that described in said publication.
  • device which can be controlled by said control structure is different from said publication.
  • the device of the present invention makes it possible to control the alignment of the paper, its feeding by the rear and front rollers and the opening and closing of the paperweight rod, according to the feeding of said paper on a cylindrical printer platen .
  • the device mainly consists of a rocker button operated by the operator, reed switches, a drive motor, a cam sprocket, a flexible comb and an arm carrying a press rod -paper.
  • the sequence of operations to be performed by the operator consists in introducing a sheet of paper into the printer from the rear of the platen and aligning its front edge relative to a paper alignment member.
  • the rear feed roller is moved away from the platen to allow the paper to pass to the alignment element, then said alignment element is placed on the path of the front edge of the sheet, finally the paperweight rod is closed and applied against the plate.
  • the momentary pressing of the button rocking in the start position initiates a controlled feeding of the paper around the platen towards a first writing line.
  • the drive motor is connected to the cam gear which causes the flexible comb and the paperweight rod support arm to rotate in a first direction. The rotation of the comb in the first direction causes the movement of the rear feed roller towards the platen and that of the paper alignment element in its position out of the path of said paper.
  • the movement of the rear feed roller towards the platen has the effect of applying the paper against the platen and allowing the feeding of said paper when said platen is rotated.
  • the purpose of repositioning the alignment element of the paper is to allow the passage of said paper around said plate.
  • the rotation of the paperweight rod holder arm in a first direction causes the paperweight rod carried by its arm to move away from the plate.
  • the cam sprocket has a magnet that actuates another reed switch when the cam sprocket continues to rotate.
  • the drive motor is then turned off and the platen is rotated to advance the front edge of the paper past the paper alignment element and the front feed roller to the first print line , in a position adjacent to the paperweight rod.
  • the rotation of the plate is stopped and the drive motor is started again, which causes the rotation of the cam pinion.
  • the flexible comb is rotated in the other direction to advance the front feed roller towards the paper and cause it to be applied against the platen.
  • the paper alignment element returns to its initial position, in contact with said paper.
  • the paperweight rod support arm is rotated in the opposite direction to apply the front edge of the sheet against the platen to allow printing of said sheet.
  • Figure 1 is a view taken from one end of the control device according to the present invention, the various elements of which are in a position or state allowing the paper to be released.
  • FIG. 2 is an end view showing the position of the flexible comb of the control device according to the present invention when the elements making up the latter are in their position or their state shown in FIG. 1.
  • Figure 3 is another view taken from the same end as that of Figure 1 showing the various elements making up the control device in a position or state allowing the initial introduction of the paper.
  • FIG. 4 is another end view showing the position of the flexible comb when the various elements making up the control device are in their position or state shown in FIG. 3.
  • Figure 5 is always the same end view of the control device but the elements making it up are in a position or state allowing the paper to be fed around the platen following an initial insertion operation.
  • FIG. 6 is yet another end view showing the position of the flexible comb when the various elements of the control device are in their position or state in FIG. 5.
  • Figure 7 is a perspective view of the device order of Figures 1, 3 and 5, which shows in more detail, the various components of the latter.
  • Figure 8 is a perspective view of the device of Figures 2, 4 and 6, which shows in more detail the various elements making up the latter.
  • 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 comprises a cam follower 23 whose end follows the surface guide 11 of the cam pinion 8 to drive 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 37 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; only the yoke 52 will therefore be described.
  • 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 feed roller rear 61.
  • a paper alignment unit 62 can be arranged in the third window of the cradle 51.
  • An element 63 oriented downwards is fixed to the cradle 51 and carries an axis 64 on which a reference 65 is mounted for rotation.
  • 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 first arc of rotation clockwise allows the front feed roller 60 to move away from the plate 68. That is to say that the pressure exerted by the roller 60 is released. This is due to the fact that the tooth 15 is released from the surface 58.
  • the second clockwise arc allows the tooth 15 to come into contact with the surface 59 and causes the device 50 to rotate counterclockwise. In this case, the rear feed roller 61 is driven towards the plate 58 to cause the application of the paper 71 against said plate 68.
  • the third arc of clockwise rotation 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.
  • the latter must be moved away from the plate 68 to allow a continuous passage for the sheet 71 around the plate 68.
  • roller d rear feed 61 must be applied against plate 68 to cause contact between sheet 71 and said plate 68. Then, plate 68 is rotated until the front edge 73 has passed the feed roller before 60 and that 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 stage 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 front edge 73 of the sheet 71 is therefore aligned against the alignment element 62.
  • the end 33 of the rocking button 31 is momentarily pressed, 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 to a motor for rotating the plate 68.
  • the plate is rotated on a certain arc by a stepper 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 engine 4.
  • the paperweight rod 74 fixed to the arm 22 has been rotated counterclockwise around the axis 21 to disengage it from the plate 68.
  • the motor 4 is started again, when stopping the rotation of the plate 68, the paperweight rod 74 must be engaged against the plate 68 to apply the front part 81 of the sheet 71 to the plate 68.
  • Table B describes in detail a paper release operation for which the front 60 and rear 61 feed rollers must be released from the plate 68.
  • the positions and states of the elements making up the device of the present invention must be those of the Figures 1 and 2.
  • the order of operations is noted in parentheses in the table. It should be noted that when the end 32 of the button 31 is pressed, 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 period of operation is determined by logic (not shown) which is not within the scope of the present invention. This is also the case for the logic (not shown) which controls the starting of the plate drive motor on a given arc, then, in sequence, the restarting of the motor 4.
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 true EP0013720A1 (de) 1980-08-06
EP0013720B1 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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0266523B1 (de) * 1986-10-08 1991-01-02 GTE Products Corporation Faseroptische Spleissung

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982001514A1 (en) * 1980-11-04 1982-05-13 Wang Laboratories Paper insertion and feeding controlled by upper paper bail
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
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
WO2017180152A1 (en) 2016-04-15 2017-10-19 Hewlett-Packard Development Company, L.P. Bail arm to rotate and oscillate

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2121853A (en) * 1936-12-04 1938-06-28 Burroughs Adding Machine Co Typewriter
DE2856569A1 (de) * 1977-12-28 1979-07-05 Ricoh Kk Blattzufuehrvorrichtung fuer eine druckeinrichtung

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
US1145017A (en) * 1915-07-06 Royal Typewriter Co Inc Writing-machine.
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
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2121853A (en) * 1936-12-04 1938-06-28 Burroughs Adding Machine Co Typewriter
DE2856569A1 (de) * 1977-12-28 1979-07-05 Ricoh Kk Blattzufuehrvorrichtung fuer eine druckeinrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0266523B1 (de) * 1986-10-08 1991-01-02 GTE Products Corporation Faseroptische Spleissung

Also Published As

Publication number Publication date
JPS5587587A (en) 1980-07-02
DE2962744D1 (en) 1982-06-24
JPS5753193B2 (de) 1982-11-11
IT7927809A0 (it) 1979-12-04
IT1162597B (it) 1987-04-01
CA1128450A (en) 1982-07-27
US4211499A (en) 1980-07-08
EP0013720B1 (de) 1982-05-05

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