EP0642999B1 - Vorrichtung zur Einführung von Bögen aus Papier - Google Patents

Vorrichtung zur Einführung von Bögen aus Papier Download PDF

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Publication number
EP0642999B1
EP0642999B1 EP94108604A EP94108604A EP0642999B1 EP 0642999 B1 EP0642999 B1 EP 0642999B1 EP 94108604 A EP94108604 A EP 94108604A EP 94108604 A EP94108604 A EP 94108604A EP 0642999 B1 EP0642999 B1 EP 0642999B1
Authority
EP
European Patent Office
Prior art keywords
sheet
sheets
manner
members
upper sheet
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
EP94108604A
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English (en)
French (fr)
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EP0642999A1 (de
Inventor
Marcelino Requena
Bernard Gamper
Guiseppe Bortolotti
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.)
Olivetti Engineering SA
Original Assignee
OCD SA
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
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Publication of EP0642999A1 publication Critical patent/EP0642999A1/de
Application granted granted Critical
Publication of EP0642999B1 publication Critical patent/EP0642999B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/06—Rollers or like rotary separators
    • B65H3/0661—Rollers or like rotary separators for separating inclined-stacked articles with separator rollers above the stack
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/06—Rollers or like rotary separators
    • B65H3/0669—Driving devices therefor

Definitions

  • the present invention relates to a sheet feeder for printers or typewriters comprising a sheet feeder channel having a support for retaining a stack of sheets, drive rollers arranged on a drive shaft so moving the upper sheet of the stack to bring it opposite a writing head, and an alignment stop arranged downstream of the introduction channel (FR-A-2 401 778).
  • Such devices are known for introducing sheets of paper used in printers, typewriters or in other devices such as photocopying devices. These known devices use a series of introduction rollers of appreciable diameter associated with the printing cylinder to obtain good alignment of the sheet of paper during its introduction.
  • the object of the present invention is to remedy the aforementioned drawbacks and to provide an introduction device small size ensuring precise alignment of the sheet fed into the printer.
  • the insertion device is characterized, for this purpose, in that the alignment stop is fixed and arranged so that the upper sheet is stressed in a first phase by the drive rollers with its front edge against said alignment stop, and at least one movable deflector element is intended to cooperate with this upper sheet to remove in a second phase its front edge from the alignment stop and to bring this edge towards the drive rollers so the top sheet comes into contact with the periphery of the drive rollers.
  • This arrangement ensures very good alignment of the paper while allowing a small footprint, in particular a small diameter of the drive rollers constituting the cylinder. This advantage is particularly important for so-called portable printers.
  • the device comprises retractable movable guide elements arranged in said introduction channel opposite the support so as to direct the sheets inside the retaining corners of this support during the insertion of a stack of sheets. in the introduction channel.
  • This construction allows even in the presence of an insertion channel and a fixed paper support easy and safe insertion of the stack of sheets of paper into the channel.
  • the support is provided with movable support members intended to urge the sheets against the drive rollers when the upper sheet of the stack must be selected to be brought opposite the writing head.
  • This arrangement allows precise control of the paper selection.
  • the device comprises retractable mobile loading stops arranged near said support and driven so as to project into the insertion channel to retain a stack of sheets during its insertion into the channel and so as to be retracted when moving the top sheet to the writing head.
  • the device comprises a control shaft arranged parallel to the roller drive shaft and comprising first cams intended to control the movement of the movable deflector element.
  • This arrangement ensures a very small footprint and a low manufacturing price.
  • control shaft further comprises second, respectively third, cams arranged so as to control the advance of the movable guide elements, respectively movable loading stops in the introduction channel to facilitate the insertion of sheets in the insertion channel and removal of these guide elements, respectively of these loading stops, during the movement of the upper sheet towards the writing head, of the fourth cams arranged so as to control the advancement of the movable support members under the effect of elastic members for the displacement of the selected upper sheet and the withdrawal of these members against the effect of said elastic members when the movement of the selected upper sheet is completed.
  • Figure 1 is a top view of this embodiment integrated in a printer, the part shown in Figure 2 being removed for clarity.
  • Figure 2 is a front view from above of part of the embodiment.
  • Figure 4 shows the cross-sectional view in active positions of the device.
  • FIG. 5 is a detailed view of FIG. 1.
  • Figure 6 illustrates a unidirectional sectional coupling
  • the insertion device 1 partially illustrated in FIG. 1 is associated with a printer 2 comprising a frame 3, a carriage 4 sliding on a bar 5 and comprising a writing head 6.
  • the frame may of course also contain other organs, such as a keyboard and a microcomputer.
  • the introducer has a bidirectional electric drive motor 10 which can be of the stepping type. This motor drives, on the one hand, drive rollers 11 secured to a drive shaft 12 and, on the other hand, a control shaft 13 which controls the movement of the various mobile elements of the introduction device.
  • the clutch device 21 is constituted by a disc 30 integral in rotation with the control shaft 13. This disc comprises a toothing 31 intended to cooperate in the engaged position with a corresponding toothing 32 secured to the wheel 22 of the second unidirectional coupling 20.
  • lug 33 which, in the disengaged position as shown in solid lines in Figure 5, is biased by a leaf spring 34 in an opening 35 formed in the fixed wall 36 integral with the frame 3.
  • a lever 40 mounted to rotate on the frame by means of a pivot 41 cooperates through one 42 of its ends with the disc 30 to release the lug 33 from the opening 35 and to engage the two teeth 31 and 32 against the effect of the spring 34, as illustrated in broken lines in FIG. 5.
  • the wheel 22 drives the disc 30 which in turn drives the control shaft 13 controlling during the rotation of a revolution the movement of the different mobile elements of the introducer.
  • the lug 33 sliding on the wall 36 falls back into the opening 35, under the effect of the spring 34 and the shaft 13 is thus disengaged from the wheel 22 and the motor 10.
  • the lever 40 cooperates at its end 43 with the movable carriage 4, when the latter is in a predetermined position at the left end of the printer. It is understood that the clutch can also be controlled by any other manual or automatic device.
  • Figures 3 and 4 show in cross section the various movable elements in the rest position and in the active positions.
  • the assembly unit 50 shown separately in FIG. 2 is mounted on the introduction device to form an introduction channel 51 for the sheets with a support 52 intended to hold a stack of sheets 53.
  • This support 52 includes lateral guides 54,55 (fig. 2) with lower retaining corners 56 intended to cooperate with the lower corners of the sheets.
  • the lateral guide 54 on the right in FIG. 2 is integral with a movable slide 58 which can be moved laterally by the adjustment button 59 to adjust the lateral guides to the paper size.
  • the introduction channel 51 further comprises retractable movable guide elements 60 in the form of controlled fins, capable of being engaged in the introduction channel 51 to direct the sheets inside the retaining corners 56 when inserting a stack of sheets into the feed channel (see Figure 3). These guide elements 60 are pivoted outside the channel 51 during the selection of a sheet (see FIG. 4).
  • the support 52 for the sheets is provided at its lower edge with retractable mobile loading stops 64 which can project into the insertion channel 51 to retain a stack of sheets during its insertion (see FIG. 3). This is particularly useful, when the sheets are too small to be retained by the corners 56. These loading stops are retracted (see FIG. 4) when the highest sheet 53a is moved towards the printer head .
  • the support 52 is further provided with movable support members 66 in the form of pads whose function is to urge the sheets against the drive rollers 11, when the upper sheet 53a (FIG. 4) must be selected to be brought into look of the writing head 6. These movable support members 66 are removed from the channel 51 to avoid the selection of the next sheet and to allow easy positioning of the stack of paper sheets when it is inserted into the channel.
  • the introduction channel comprises a fixed alignment stop 67 constituted by a part integral with the frame of the introduction device.
  • This stop 67 is arranged so that, during a first phase of driving the upper sheet 53a by the drive rollers 11, this sheet is urged with its front edge against this stop 67 to obtain a precise alignment.
  • deflector elements 68 which are retracted in the rest position and the first phase of the selection of the upper sheet 53a (see FIGS. 3 and 4 in solid lines).
  • these deflector elements 68 are pivoted so as to cooperate with the upper sheet 53a to remove its front edge from the alignment stop 67 and to bring this edge towards the drive rollers 11 so that this upper sheet 53a comes into contact with the periphery of these rollers, as shown in dashed lines 68a in FIG. 4.
  • the sheet 53a is then pressed against the drive rollers 11 and when the latter are rotated clockwise in FIG. 4, the sheet passes between the backpressure rollers 70,71 and the drive rollers 11 to pass in front of the writing head 6 and be brought in front of an opto-electronic detector 72, which controls the stopping of the feeding of the sheet to the position which corresponds to the first printing line.
  • control shaft 13 has first cams 78 intended to cooperate with the deflector elements 68 to move the latter from a retracted position to an active position and vice versa by rotation around the axis 79.
  • the support members 66 are articulated on the frame 87 by means of pivots 92.
  • Two springs 93 with elastic metal rods urge the support members 66 towards their active position indicated in broken lines on the Figure 8, in which they press the sheets against the drive rollers 11.
  • Third cams 94 cooperate with the springs 93 to move the support members 66 to their retracted position shown in solid lines in Figure 8 to allow the setting in place of a packet of sheets on the support 52.
  • FIG. 8 there is also shown one of the fixed retaining corners 56 integral with the lateral guide 55 and which has a rounded internal shape to facilitate the release of the upper sheet 53a during its selection.
  • the mechanism for controlling the loading stops 64 is explained in more detail with reference to FIG. 9.
  • These mobile stops 64 are pivotally mounted on a stirrup-shaped part 96 by means of a pivot 97.
  • the stirrup-shaped part 96 is itself articulated on the frame 87 by means of a pivot 98 and comprises in its lower part a toothing 99 intended to cooperate with a cam 100 integral with the control shaft 13 and which also has a toothing 101.
  • a coil spring 102 connects the rear part of the loading stops 64 to the frame 87 and biases the latter towards their position where they are retracted from the channel d introduction 51.
  • the cam 100, the part 96 and the loading stops 64 are brought into the position indicated in broken lines in FIG. 9, or they retain sheets on the support 52 An additional rotation of the control shaft 13 releases the mechanism which returns to the position shown in solid lines in FIG. 9.
  • this introduction device is as follows. In the rest position, in which a stack of sheets can be placed on the support 52, as shown in FIG. 3, the guide elements 60 and the loading stops 64 are in their active position. The support members 66 and the deflector elements 68 are in their retracted position. Following a paper feed command, the lever 40 causes the clutch device 21 to be clutched. The motor 10 then firstly rotates in the second direction to drive the control shaft 13d in rotation. 'A predetermined angle such that the support members 66 urge the sheets 53 against the drive rollers 11 and such that the guide elements 60 and the loading stops 64 are retracted.
  • a second step the direction of the motor 10 is then reversed to rotate the drive rollers 11 which release the upper sheet 53a under the corners of retainer 56 and move it downwards to urge it by its front edge against the alignment stop 67. A small additional stroke is made at this time so as to ensure by pressure a precise alignment of the sheet 53a.
  • the motor 10 rotates in the second direction and the control shaft 13 causes, via the cams 78, the advancement of the deflector elements 68 which urge the upper sheet 53a against the drive rollers 11 (FIG. 4).
  • the motor 10 rotating in the first direction drives the sheet to the writing head 6 and to the opto-electronic detector 72 which records its exact passage.
  • the rotation of the motor rotating in the second direction causes the withdrawal of the support members 66 and the deflector elements 68 by means of the cams 94 and 78 and the advancement of the guide elements 60 and the loading stops 64 by action of the cams 91 and 100.
  • the motor 10 rotates in the first direction to carry out the driving of the sheet 53a opposite the writing head.
  • the sheet is transported by the wheels 73, 74 engaged with the motor 10 turning in the first direction to be deposited in the receptacle 75.
  • This construction ensures reliable paper transport with precise alignment of the sheet to be printed while making it possible to considerably reduce the size of the device.
  • Another advantage results from the fact that the manufacture and assembly of the device are simplified considering that the movable elements associated with the support 52 of paper and its introduction channel 51 are arranged on a separate assembly unit 50 (fig. 2). The assembly of this unit 50 is carried out separately and the whole of the unit 50 can then be placed on the frame 3 comprising the motor 10 and the drive and control shafts 12, 13 with their related elements as illustrated. in FIG. 1. This construction also facilitates repairs or allows rapid replacement of the assembly unit 50.
  • the embodiment described above is in no way limiting and that it can receive any desirable modifications within the framework as defined by claim 1.
  • certain elements, such as the loading stops 64 or the guide elements 60 can be omitted in simplified variants.
  • the movable support members 66 may be replaced by a movable sheet support capable of being moved or pivoted to apply the sheets during selection elastically against the drive rollers 11.
  • the latter can be replaced by a striking cylinder or printing.
  • the drive of the drive shaft 12 and the control shaft 13 can also be carried out by two separate motors.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pile Receivers (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Handling Of Cut Paper (AREA)

Claims (13)

  1. Vorrichtung zur Blattzuführung für Drucker oder Schreibmaschinen mit einem Blattzuführungskanal (51), der eine Stütze (52) aufweist, die dazu bestimmt ist, einen Stapel von Blättern (53) zu halten, ferner Einzugsrollen (11), die so auf einer Einzugswelle (12) angeordnet sind, dass sie das oberste Blatt (53a) des Stapels verschieben und vor einen Schreibkopf (6) führen, sowie einen abwärts vom Zuführungskanal (51) angeordneten Richtanschlag (67), dadurch gekennzeichnet, dass der Richtanschlag (67) unbeweglich und so angeordnet ist, dass das oberste Blatt (53a) in einer ersten Phase mit seiner Vorderkante durch die Einzugsrollen (11) gegen den benannten Richtanschlag (67) gedrückt wird, und dass zumindest ein bewegliches Ablenkelement (68) dazu bestimmt ist, mit diesem obersten Blatt (53a) zusammenzuwirken, damit in einer zweiten Phase seine Vorderkante vom Richtanschlag (67) weggehoben und so zu den Einzugsrollen (11) geführt wird, dass das oberste Blatt (53a) mit der Peripherie der Einzugsrollen (11) in Berührung kommt.
  2. Vorrichtung gemäss Anspruch 1, dadurch gekennzeichnet, dass sie bewegliche, wegklappbare Führungselemente (60) umfasst, die in dem benannten Zuführungskanal (51) so gegenüber der Stütze (52) angeordnet sind, dass sie die Blätter (53) bei Eingabe eines Stapels von Blättern (53) in den Zuführungskanal (51) zwischen Haltekeile (56) dieser Stütze (52) lenken.
  3. Vorrichtung gemäss Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, dass die Stütze mit beweglichen Abstützorganen (66) ausgerüstet ist, die dazu bestimmt sind, die Blätter (53) vermittels der Federgestänge (93) gegen die Einzugsrollen (11) zu drücken, wenn das oberste Blatt (53a) des Stapels ausgewählt werden soll, um es vor den Schreibkopf (6) zu führen.
  4. Vorrichtung gemäss einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass sie bewegliche, wegklappbare Ladebügel (64) umfasst, die nahe der benannten Stütze (52) angeordnet und so betrieben werden, dass sie im Zuführungskanal (51) einen Vorsprung ergeben, um einen Stapel von Blättern (53) bei dessen Einführung in den Kanal zu halten, und bei Verschiebung des obersten Blattes (53a) zum Schreibkopf (6) zurückgezogen werden.
  5. Vorrichtung gemäss einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass sie eine Steuerwelle (13) umfasst, die parallel zur Einzugswelle (12) der Rollen (11) angeordnet ist und erste Nocken (78) aufweist, die dazu bestimmt sind, die Bewegung des beweglichen Ablenkelements (68) zu steuern.
  6. Vorrichtung gemäss Anspruch 5, dadurch gekennzeichnet, dass die Einzugswelle (12) der Rollen (11) und die Steuerwelle (13) an einen einzigen, in beiden Richtungen umlaufenden Motor (10) angeschlossen sind, wobei die Einzugswelle (12) mit einer einseitig ausgerichteten Kupplung ausgerüstet ist, die in einem ersten Drehsinn des Motors (10) von diesem mitgenommen wird, während die Steuerwelle (13) mit einer zweiten, einseitig ausgerichteten Kupplung ausgerüstet ist, die im zweiten Drehsinn des Motors (10) von diesem mitgenommen wird.
  7. Vorrichtung gemäss Anspruch 6, dadurch gekennzeichnet, dass die Steuerwelle zusätzlich zweite bzw. dritte Nocken (91, 100) aufweist, die so angeordnet sind, dass sie das Vorrücken der beweglichen Führungselemente (60) bzw. der beweglichen Ladebügel (64) im Zuführungskanal (51) steuern, um das Einlegen der Blätter in den Zuführungskanal (51) zu erleichtern, und dass sie den Rückzug dieser Führungselemente (60) bzw. dieser Ladebügel (64) steuern, wenn das oberste Blatt zum Schreibkopf (6) verschoben wird, und dass sie ferner vierte Nocken (94) aufweist, die so angeordnet sind, dass sie das Vorrücken der beweglichen Abstützorgane (66) under der Einwirkung elastischer Organe (93) für die Verschiebung des ausgewählten, obersten Blattes sowie den Rückzug dieser Organe (66) gegen die Wirkung der benannten elastischen Organe (93) nach beendeter Verschiebung des ausgewählten obersten Blattes steuern.
  8. Vorrichtung gemäss Anspruch 7, dadurch gekennzeichnet, dass sie Steuerorgane (14) umfasst, die so angeordnet sind, dass sie während eines kompletten Arbeitsganges der Verschiebung des obersten Blattes (53a) zum Schreibkopf (6)
    - in einem ersten Arbeitstakt eine Drehung des Motors (10) in dem benannten zweiten Drehsinn steuern, um das Vorrücken der Abstützorgane (66) vermittels der vierten Nocken (94) zu bewirken, damit das oberste Blatt gegen die Einzugsrollen (11) gedrückt wird, und ferner um den Rückzug der Führungselemente (60) und der Ladebügel (64) vermittels der zweiten und dritten Nocken (91, 100) zu bewirken;
    - in einem zweiten Arbeitstakt eine Drehung im ersten Drehsinn steuern, um den Antrieb der Rollen (11) und die Verschiebung des obersten Blattes (53a) zu bewirken, und zwar so, dass letzteres mit seiner Vorderkante gegen den Richtanschlag (67) gedrückt wird;
    - in einem dritten Arbeitstakt eine Drehung im zweiten Drehsinn steuern, um mit Hilfe der ersten Nocken (78) ein Vorrücken des Ablenkelements (68) zu bewirken, das das oberste Blatt (53a) am Anschlag gegen die Einzugsrollen (11) drückt;
    - in einem vierten Arbeitstakt eine Drehung im ersten Drehsinn steuen, um das Blatt bis zum Schreibkopf (6) zu bewegen;
    - in einem fünften Arbeitstakt eine Drehung im zweiten Drehsinn steuern, um den Rückzug der Abstützorgane (66) und des Ablenkelements (68) mit Hilfe der vierten und ersten Nocken (74, 78) sowie das Vorrücken der Führungselemente (60) und der Ladebügel (64) mit Hilfe der zweiten und dritten Nocken (91, 100) zu bewirken;
    - in einem sechsten Arbeitstakt im ersten Drehsinn steuern, um das Blatt unter den Schreibkopf (6) zu bewegen.
  9. Vorrichtung gemäss einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass sie abwärts vom Schreibkopf (6) angeordnete Transportelemente (73, 74) umfasst, die aus Profilrädern (73, 74) bestehen und dazu bestimmt sind, auf die Hinterkante des Blattes einzuwirken, um das Blatt abzuheben und es zur Ablage in einem Behälter (75) für bedruckte Blätter zu bringen.
  10. Vorrichtung gemäss einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass sie Spürorgane (72) umfasst, die dafür geeignet sind, den Durchlauf des Blattes zu erkennen, und dadurch eine genaue Positionierung des Gedruckten auf dem Blatt ermöglichen.
  11. Vorrichtung gemäss einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, dass sie eine Kupplungsvorrichtung (21) umfasst, die zwischen der zweiten, einseitig ausgerichteten Kupplung (20) und der Steuerwelle (13) angeordnet und so ausgelegt ist, dass sie auf einen Betriebsbefehl hin einen Mitnahmekontakt zwischen der zweiten, einseitig ausgerichteten Kupplung (20) und der Steuerwelle (13) herstellt.
  12. Vorrichtung gemäss Anspruch 6, dadurch gekennzeichnet, dass die zweite Vorrichtung für einseitig ausgerichtete Kupplung (21) aus einem Rad (22) mit gekrümmten Schaufeln (23) besteht, wobei die Enden der Schaufeln (23) mit den Zähnen (24) eines Zahnrades (25) zusammenwirken, das um das Schaufelrad (22) herum angeordnet ist.
  13. Vorrichtung gemäss einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass sie eine getrennte Baueinheit (50) aufweist, auf der die mit dem Zuführungskanal (51) und der Stütze (52) zusammenhängenden beweglichen Elemente montiert sind, wobei sich diese Einheit dafür eignet, als ein Ganzes auf den übrigen Teil der Vorrichtung montiert zu werden.
EP94108604A 1993-09-10 1994-06-06 Vorrichtung zur Einführung von Bögen aus Papier Expired - Lifetime EP0642999B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH02735/93A CH689277A5 (fr) 1993-09-10 1993-09-10 Dispositif d'introduction de feuilles.
CH2735/93 1993-09-10

Publications (2)

Publication Number Publication Date
EP0642999A1 EP0642999A1 (de) 1995-03-15
EP0642999B1 true EP0642999B1 (de) 1997-05-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP94108604A Expired - Lifetime EP0642999B1 (de) 1993-09-10 1994-06-06 Vorrichtung zur Einführung von Bögen aus Papier

Country Status (5)

Country Link
US (1) US5478067A (de)
EP (1) EP0642999B1 (de)
JP (1) JP3600273B2 (de)
CH (1) CH689277A5 (de)
DE (1) DE69403163T2 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970063629U (ko) * 1996-05-18 1997-12-11 전자사진 프로세서의 기록용지 급지장치
TWI229653B (en) * 2003-11-13 2005-03-21 Primax Electronics Ltd Paper-pickup force adjusting mechanism

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2738855A1 (de) * 1977-08-29 1979-03-15 Siemens Ag Vorrichtung zur papierfuehrung in druckgeraeten, insbesondere bei daten- und fernschreibmaschinen
US4211499A (en) * 1978-12-26 1980-07-08 International Business Machines Corporation Paper feeding control apparatus
CA1140601A (en) * 1979-03-30 1983-02-01 Emile F. Stievenart Method and device for separating a sheet from a stack of sheets
US4556209A (en) * 1982-12-01 1985-12-03 Tokyo Shibaura Denki Kabushiki Kaisha Sheet feeding apparatus
JPS59102739A (ja) * 1983-10-31 1984-06-13 Toshiba Corp 紙葉類の搬送装置
US4795145A (en) * 1986-09-22 1989-01-03 Centronics Data Computer Corporation Cut sheet paper mechanism
US4986525A (en) * 1989-01-25 1991-01-22 Brother Kogyo Kabushiki Kaisha Sheet feed device for use in a printer or the like
US5240242A (en) * 1990-07-05 1993-08-31 Canon Kabushiki Kaisha Sheet feeding device

Also Published As

Publication number Publication date
JPH0781793A (ja) 1995-03-28
DE69403163D1 (de) 1997-06-19
EP0642999A1 (de) 1995-03-15
JP3600273B2 (ja) 2004-12-15
CH689277A5 (fr) 1999-01-29
US5478067A (en) 1995-12-26
DE69403163T2 (de) 1997-10-09

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