EP0235632B1 - Papiertransporteinrichtung für Einzelblätter und Endlospapierbahnen in Druckern, insbesondere in Matrixdruckern - Google Patents

Papiertransporteinrichtung für Einzelblätter und Endlospapierbahnen in Druckern, insbesondere in Matrixdruckern Download PDF

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Publication number
EP0235632B1
EP0235632B1 EP87101953A EP87101953A EP0235632B1 EP 0235632 B1 EP0235632 B1 EP 0235632B1 EP 87101953 A EP87101953 A EP 87101953A EP 87101953 A EP87101953 A EP 87101953A EP 0235632 B1 EP0235632 B1 EP 0235632B1
Authority
EP
European Patent Office
Prior art keywords
roller
lever
friction
feed device
paper feed
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
EP87101953A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0235632A3 (en
EP0235632A2 (de
Inventor
Günter Dipl.-Ing Gomoll (FH)
Wolfgang Dipl.-Ing Hauslaib (Fh)
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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 Mannesmann AG filed Critical Mannesmann AG
Priority to AT87101953T priority Critical patent/ATE63718T1/de
Publication of EP0235632A2 publication Critical patent/EP0235632A2/de
Publication of EP0235632A3 publication Critical patent/EP0235632A3/de
Application granted granted Critical
Publication of EP0235632B1 publication Critical patent/EP0235632B1/de
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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/48—Apparatus for condensed record, tally strip, or like work using two or more papers, or sets of papers, e.g. devices for switching over from handling of copy material in sheet form to handling of copy material in continuous form and vice versa or point-of-sale printers comprising means for printing on continuous copy material, e.g. journal for tills, and on single sheets, e.g. cheques or receipts
    • 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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/26—Pin feeds
    • B41J11/30—Pin traction elements other than wheels, e.g. pins on endless bands
    • 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
    • B41J13/10—Sheet holders, retainers, movable guides, or stationary guides
    • 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
    • B41J13/10—Sheet holders, retainers, movable guides, or stationary guides
    • B41J13/103—Sheet holders, retainers, movable guides, or stationary guides for the sheet feeding section

Definitions

  • the invention relates to a paper transport device for single sheets and continuous paper webs in printers, in particular in matrix printers, with a pressure abutment and friction roller pairs associated therewith, and a tractor for the endless web, wherein an inlet friction roller pair for a single sheet is arranged in front of the print abutment for a single sheet and a push tractor for an endless paper web are and wherein a Auslaut friction roller pair is provided behind the pressure abutment.
  • Such paper transport devices require the processing of single sheets and continuous paper webs in a rough division of finite and endless paper webs, the threading of the single sheets and continuous paper webs and the processing, i.e. Printing and feeding should be largely trouble-free. In such paper transport devices, however, not only single sheets and continuous paper webs, but also flight tickets, check cards, receipts of all kinds, stickers and the like are. processed.
  • unused empty paper web sections are required in order to bring the respective paper path into the effective range of the drive elements.
  • the arrangement of the drive elements can contribute to the formation of waves which ultimately lead to a paper jam, ie to a malfunction of the printer operation.
  • more and more special properties of such a paper transport device are required, such as, for example, the retraction of a paper web when the paper type is selected incorrectly.
  • the item of CH-A-626 832 which relates to a ticket printer, can alternately print single tickets and tickets attached to a paper web.
  • the respective other friction roller of an inlet friction roller pair and an outlet friction roller pair cannot be lifted off, so that the contact pressure of the friction rollers cannot be changed in such a way as to pull the ticket or the paper web taut.
  • a wave-free printing and the feeding out as well as the retraction of an incorrectly chosen paper type is not possible. It is also not intended to avoid empty paper web sections, which, however, is due to the peculiarity of a ticket printer.
  • the present invention has for its object to enable the insertion, wave-free printing and the removal and retraction of a paper web regardless of the choice of a finite or an endless paper web. At the same time, extremely economical use of paper when feeding into the drive elements is required in order to avoid empty paper web sections.
  • the object is achieved according to the invention in that in each case one friction roller is mounted in a stationary and rotatable manner on the printer frame and the other friction roller of the two pairs of friction rollers can be lifted off and can be re-engaged on the stationary friction roller with a fixed, mutually dependent contact force from a common force of a tension spring , wherein the contact pressure of the inlet friction roller pair is greater than the contact pressure of the outlet friction roller pair and the drives of the inlet friction roller pair and the push tractor are rotatable backwards.
  • This solution has the following advantages: The insertion of both the finite and the endless paper web takes place in the pushing method and the return of the individual paper webs in the pulling method.
  • the use of a tractor as a push tractor therefore means a spatial freedom behind the pair of outlet friction rollers, so that there are no more paper losses and that an extremely short distance between the pressure point and the pair of outlet friction rollers can be maintained, which in turn means that a short time
  • the respective paper web can be returned to the printing position. After leaving the pair of discharge friction rollers, the paper web can moreover be torn off easily without the paper having to be re-inserted manually or automatically. If, however, wave formation or even a jam occurs with multi-layer form sets, it is possible to easily remove the jam paper by opening the friction roller pairs even with such a paper transport device.
  • the predetermined dependent contact pressure is a further advantage of the two pairs of friction rollers, so that the desired train can easily be built up in the respective paper web.
  • the paper is therefore always smooth in front of the platen.
  • the paper transport device according to the invention is particularly advantageously suitable for bar-shaped pressure abutments with a more straight line of the paper web, but it can also be used advantageously
  • the removable friction rollers are each mounted on an inlet or outlet roller lever which can be rotated about a pivot bearing.
  • one of the friction rollers can be rotatably mounted in a stationary manner and the other friction roller is mounted on the respective roller lever and can be pivoted with it.
  • the outlet roller lever is rotatably mounted on an axis running parallel to the pressure abutment and that at least one profile section is provided on the axis, on which a spring lever is also fixed in a rotationally fixed manner.
  • a leg spring is supported with its one leg and the other leg on the spring lever connected to the axle on an intermediate lever rotatably mounted on the printer frame and that the axle is rotatably arranged in the intermediate lever. This creates a toggle joint between the outlet roller lever, the spring lever and the intermediate lever.
  • the intermediate lever forms a pivot point for a tension spring and that the other pivot point for the tension spring is on the inlet roller lever.
  • the infeed roller lever is also spring-loaded and is constantly held in the active position with the infeed friction roller.
  • the contact forces between the friction roller pairs by means of the lever lengths of the roller axes of the friction rollers to the pivot bearings on the printer frame or the axis and by means of the force of the tension spring is set approximately in a ratio of 1: 1.4, the greater contact force refers to the pair of inlet friction rollers.
  • This difference in the contact forces of the inlet friction roller pair and the outlet friction roller pair has an advantageous effect on the insertion and the retraction of a finite or a continuous paper web.
  • the desired friction forces can also be transmitted in their different sizes by a friction roller pair consisting of one or more rubber-coated rollers and one steel roller each.
  • a pair of friction rollers consists of a rubber-coated roller and several smooth plastic rollers.
  • plastic rollers When using plastic rollers it is also advantageous that a plastic roller is axially articulated and axially displaceably mounted on a drive shaft with a polygon cross section. This design connects both a suitable system to the course of the Paper web with the most favorable distribution of the friction forces across the paper web width.
  • roller body is mounted on the drive axle with an approximately articulated center bar and by means of a resilient plastic ring.
  • the basic position of the paper transport device is also ensured in that the outlet roller lever is supported on a support block.
  • the pressure abutment (2) is advantageously designed as a so-called silenced pressure beam.
  • the push tractor (15) lies horizontally, so that the continuous paper web (16) is pushed into the vertical with a deflection radius (22).
  • the friction roller pairs (11, 12 and 13, 14) are in a fixed relationship with regard to their contact pressure.
  • a prerequisite for this is that a friction roller (11 and 14) is mounted on the printer frame (2b) by means of a rotary bearing (2c).
  • the respective other friction rollers (12 or 13) can be lifted off and can be re-adjusted to the stationary friction roller (11 or 14) with a fixed, dependent contact pressure.
  • An inlet roller lever (4) and an outlet roller lever (3) are used for this purpose, of which the inlet roller lever (4) is pivotally mounted about a pivot bearing (2d).
  • the outlet roller lever (3) is rotatably connected to an intermediate lever (3a) via an axis (8), and the intermediate lever (3a) is rotatably mounted on the printer frame (2b) via the pivot bearing (2d).
  • the outlet roller lever (3) carries the adjustable friction roller (12) and the inlet roller lever (4) carries the friction roller (13).
  • the outlet roller lever (3) is rotatably connected to the axis (8) running parallel to the pressure abutment (2) via a profile section (8a). On the axis (8), the profile section (8a) is designed as a D-profile.
  • the axis (8) is rotatably supported in a bushing (30).
  • the bushing (30) is inserted in the intermediate lever (3a) in a rotationally fixed manner.
  • the inlet roller lever (4) is supported on this bushing (30) when the axis (8) is pivoted under the force of a tension spring (5).
  • the intermediate lever (3a) which is rotatably mounted on the printer frame (2b) and which can be pivoted about a pivot bearing (2d) and carries a leg spring (10), one leg (10a) of which is attached to the intermediate lever (3a) and the other leg (10b) of which engages a spring lever (9).
  • the spring lever (9) is non-rotatably connected to the axle (8).
  • a link point (3b) for the tension spring (5) is also provided on the intermediate lever (3a).
  • the other articulation point (4a) for the tension spring (5) is located on the inlet roller lever (4).
  • the tension spring (5) therefore exerts a force which pulls the friction roller (13) against the friction roller (14) as torque around the swivel bearing (2d) of the inlet roller lever (4).
  • the contact forces (F1 and F2) between the friction roller pairs (11/12 and 13/14) by means of the distances (a, b, c, d), the force (F - spring) the tension spring (5) is set approximately in the ratio 1: 1.4, the larger contact pressure (F2) referring to the inlet friction roller pair (13/14).
  • alpha 46.5 degrees
  • beta 6 degrees
  • a 46.3 mm
  • b 32.6 mm
  • c 12 mm
  • d 17.7 mm.
  • the friction roller pair (13/14 or 11/12) consists of a rubber-coated roller (11a or 14a) and a (knurled) steel roller (12a or 13a).
  • the friction conditions are also determined by the fact that all of the rollers are driven by the friction roller pairs (11/12 or 13/14).
  • the plastic roller (18) shown in Fig. 4 can be used.
  • the plastic roller (18) is axially articulated and axially displaceable about the drive axis (12b), the drive axis (12b) being provided with a polygon cross section (12c).
  • the roller body (18b) has only one web (18c) located approximately in the middle of the length, to which a resilient plastic ring (18d) is assigned, so that the roller body (18) oscillates through the spring arms (18e) and the ring cavities (18f) can.
  • the paper transport device works as follows: The discontinued friction roller pair (11/12) performs two tasks. It tensions the single sheet (17) or the continuous paper web (16). It exits the respective paper type after leaving the inlet friction roller pair (13/14) or the tractor (15) from the printer.
  • the outlet friction roller pair (11/12) covers a distance that is 0.2% greater than that of the tractor (15) or the inlet friction roller pair (13/14).
  • the pair of inlet friction rollers (13/14) is the determining factor. For this reason, the friction force of this pair of rollers is greater than that of the discontinued pair of friction rollers (11/12). Contributing to this effect are that the friction roller (14) is rubber-coated, that the friction roller (13) forms a (knurled) steel roller, that the friction roller (11a) is rubber-coated and that the axle (12) has two or more smooth plastic rollers (18) wearing.
  • the selected lever lengths (a, b, c, d), the angle values for alpha and beta ensure that the frictional force of the outlet friction roller pair (11/12) is always less than that of the inlet friction roller pair (13/14).
  • Push tractor drives can become problematic with multi-layer form sets. A feature of this is also due to the deflection radius (22). This creates a path difference between the first and last paper layer of a multi-layer paper form.
  • the rubber-coated friction roller (11a) exerts friction on the paper.
  • the plastic rollers (18) only have a guiding and pressing function. The smooth surface of the plastic rollers (18) exerts hardly any frictional forces on the paper.
  • the axis (12) is nevertheless driven to compensate for the braking effect of the bearing friction.
  • the first layer of paper is therefore not braked on the plastic roller (18), which can often lead to the formation of waves and ultimately to a paper jam.
  • the friction roller pairs (11/12 and 13/14) can be removed using the outlet roller lever (3) can be opened.
  • the drive axle (12b) is pivoted with the intermediate lever (3a), the leg spring (10) being compressed against its force and the spring lever (9) in the direction (23a) is pivoted.
  • the drive axis (12a) is pivoted with its D-profile section (8a), whereby the infeed roller lever (4) is pivoted about its pivot bearing (2d) in the sense that the outfeed friction roller (13 ) from the friction roller (14).

Landscapes

  • Delivering By Means Of Belts And Rollers (AREA)
  • Handling Of Cut Paper (AREA)
  • Advancing Webs (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Handling Of Sheets (AREA)
  • Handling Of Continuous Sheets Of Paper (AREA)
EP87101953A 1986-03-04 1987-02-12 Papiertransporteinrichtung für Einzelblätter und Endlospapierbahnen in Druckern, insbesondere in Matrixdruckern Expired - Lifetime EP0235632B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87101953T ATE63718T1 (de) 1986-03-04 1987-02-12 Papiertransporteinrichtung fuer einzelblaetter und endlospapierbahnen in druckern, insbesondere in matrixdruckern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3607079 1986-03-04
DE19863607079 DE3607079A1 (de) 1986-03-04 1986-03-04 Papiertransporteinrichtung fuer einzelblaetter und endlospapierbahnen in druckern, insbesondere in matrixdruckern

Publications (3)

Publication Number Publication Date
EP0235632A2 EP0235632A2 (de) 1987-09-09
EP0235632A3 EP0235632A3 (en) 1988-07-13
EP0235632B1 true EP0235632B1 (de) 1991-05-22

Family

ID=6295466

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87101953A Expired - Lifetime EP0235632B1 (de) 1986-03-04 1987-02-12 Papiertransporteinrichtung für Einzelblätter und Endlospapierbahnen in Druckern, insbesondere in Matrixdruckern

Country Status (5)

Country Link
US (1) US4834277A (enrdf_load_stackoverflow)
EP (1) EP0235632B1 (enrdf_load_stackoverflow)
JP (1) JPS62227669A (enrdf_load_stackoverflow)
AT (1) ATE63718T1 (enrdf_load_stackoverflow)
DE (2) DE3607079A1 (enrdf_load_stackoverflow)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0616766Y2 (ja) * 1987-12-25 1994-05-02 シチズン時計株式会社 プリンタトップカバー
JP2689469B2 (ja) * 1988-04-08 1997-12-10 セイコーエプソン株式会社 プリンタ紙送り機構
JP2574883Y2 (ja) * 1988-05-13 1998-06-18 沖電気工業株式会社 水平インサータプリンタ
US5295616A (en) * 1988-05-24 1994-03-22 Ricoh Company, Ltd. Switchable automatic document feeder capable of feeding continuous form documents or single sheet documents
US5335837A (en) * 1988-05-24 1994-08-09 Ricoh Company, Ltd. Automatic document feeder responsive to paper jam
US5018889A (en) * 1989-02-15 1991-05-28 Tokyo Electric Co., Ltd. Sheet conveying apparatus for a printer
DE3906611A1 (de) * 1989-03-02 1990-09-06 Philips Patentverwaltung Anordnung zur verstellung eines druckers
JPH02269077A (ja) * 1989-04-11 1990-11-02 Brother Ind Ltd プリンタの用紙給送装置
DE69026418T2 (de) * 1989-05-08 1996-09-19 Canon Kk Aufzeichnungsvorrichtung
US5083880A (en) * 1989-07-19 1992-01-28 Fujitsu Limited Printing media feeding apparatus for printers
JP2928298B2 (ja) * 1989-12-15 1999-08-03 株式会社リコー 自動原稿送り装置
JP2925614B2 (ja) * 1989-12-20 1999-07-28 株式会社リコー 自動原稿送り装置
US5602571A (en) * 1990-03-14 1997-02-11 Canon Kabushiki Kaisha Sheet feeding apparatus and recording system with it
JP3034902B2 (ja) * 1990-04-18 2000-04-17 株式会社リコー 用紙給送装置
US5232210A (en) * 1990-07-03 1993-08-03 Ricoh Company, Ltd. Document feeding method for a recycling automatic document feeder
EP0478300B1 (en) * 1990-09-27 1997-04-23 Canon Kabushiki Kaisha Method and apparatus for serial recording
US5264873A (en) * 1992-09-04 1993-11-23 Eastman Kodak Company Traction surfaces for thermal printer capstan drives
US5294204A (en) * 1992-12-18 1994-03-15 Clary John G Multi-line printer for slips or the like
CN1074382C (zh) * 1996-09-12 2001-11-07 阿尔卑斯电气株式会社 打印机用自动供纸装置
JP3088963B2 (ja) * 1997-02-03 2000-09-18 ニスカ株式会社 ヒンジ装置
DE19749603C2 (de) * 1997-11-10 1999-11-25 Oce Printing Systems Gmbh Vorrichtung zum traktorlosen Transport eines bandförmigen Aufzeichnungsträgers in einem elektrografischen Druck- oder Kopiergerät
US6641314B2 (en) * 2001-03-09 2003-11-04 Fuji Photo Film Co., Ltd. Color thermal printer having tension roller
US6612562B2 (en) 2001-12-21 2003-09-02 Pitney Dowes Inc. Method and system for feeding media to a printer
US7066670B2 (en) * 2004-02-10 2006-06-27 Tallygenicom Lp Printing method and apparatus
ATE437975T1 (de) * 2004-04-13 2009-08-15 Applied Materials Gmbh & Co Kg Führungsanordnung mit mindestens einer führungswalze für die führung von bändern in bandbehandlungsanlagen
JP4527522B2 (ja) * 2004-06-01 2010-08-18 セイコーインスツル株式会社 熱活性化装置およびシート材の搬送方法

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US3330458A (en) * 1965-05-17 1967-07-11 Quik Chek Electronics And Phot Removable pressure roller mechanism
US3561660A (en) * 1968-10-28 1971-02-09 Burroughs Corp Swiveling pressure roller assembly
US3753483A (en) * 1970-03-20 1973-08-21 Memorex Corp Typewriter dual feed apparatus
DE2533782C3 (de) * 1975-07-29 1980-01-17 Welcker, Friedrich, 5850 Hohenlimburg Papierandruckrolle für Schreibmaschinen o.dgl
DE2715428C2 (de) * 1977-04-04 1982-05-19 Mannesmann AG, 4000 Düsseldorf Vorrichtung zum Bedrucken von Formularen, insbesondere von Tickets
US4272001A (en) * 1979-10-15 1981-06-09 Stephen Horniak Ticket dispenser
JPS6316531Y2 (enrdf_load_stackoverflow) * 1981-06-19 1988-05-11
DE3214549C2 (de) * 1982-04-20 1985-01-17 Siemens AG, 1000 Berlin und 8000 München Transportvorrichtung für randgelochtes Faltpapier und für Rollenpapier
JPS58203074A (ja) * 1982-05-24 1983-11-26 Tokyo Electric Co Ltd プリンタ
DE3481294D1 (de) * 1983-04-26 1990-03-15 Siemens Ag Papiertransportvorrichtung fuer einzelblaetter und endlospapier in druckeinrichtungen.
US4606663A (en) * 1983-11-29 1986-08-19 Siemens Aktiengesellschaft Switchable paper transport device for single sheets and continuous paper in printers
EP0168397A4 (en) * 1984-01-20 1987-04-07 Varitronic Systems Inc PRECISE FEEDING AND GUIDING MECHANISM OF A STRIP.

Also Published As

Publication number Publication date
DE3770182D1 (de) 1991-06-27
US4834277A (en) 1989-05-30
DE3607079A1 (de) 1987-10-15
ATE63718T1 (de) 1991-06-15
JPS62227669A (ja) 1987-10-06
DE3607079C2 (enrdf_load_stackoverflow) 1988-08-25
EP0235632A3 (en) 1988-07-13
EP0235632A2 (de) 1987-09-09

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