EP0043008B1 - Stacking device for fanfolded web - Google Patents

Stacking device for fanfolded web Download PDF

Info

Publication number
EP0043008B1
EP0043008B1 EP19810104442 EP81104442A EP0043008B1 EP 0043008 B1 EP0043008 B1 EP 0043008B1 EP 19810104442 EP19810104442 EP 19810104442 EP 81104442 A EP81104442 A EP 81104442A EP 0043008 B1 EP0043008 B1 EP 0043008B1
Authority
EP
European Patent Office
Prior art keywords
paper
stack
tray
infold
release
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
EP19810104442
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0043008A1 (en
Inventor
Floyd Arthur Gregory
Robert Allan Ryan
Frederick William Singer
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 EP0043008A1 publication Critical patent/EP0043008A1/en
Application granted granted Critical
Publication of EP0043008B1 publication Critical patent/EP0043008B1/en
Expired 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
    • B65H45/00—Folding thin material
    • B65H45/02—Folding limp material without application of pressure to define or form crease lines
    • B65H45/06—Folding webs
    • B65H45/10—Folding webs transversely
    • B65H45/101—Folding webs transversely in combination with laying, i.e. forming a zig-zag pile
    • B65H45/1015—Folding webs provided with predefined fold lines; Refolding prefolded webs, e.g. fanfolded continuous forms
    • 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
    • B41J11/58—Supply holders for sheets or fan-folded webs, e.g. shelves, tables, scrolls, pile holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/11—Dimensional aspect of article or web
    • B65H2701/112—Section geometry
    • B65H2701/1123—Folded article or web
    • B65H2701/11231—Fan-folded material or zig-zag or leporello

Definitions

  • the invention relates generally to high speed stacking devices for fanfolded paper and more particularly to such devices that maintain more positive control over the paper and its path from a printing station to the stacker and that urge restoration of previous folds in the web.
  • each of the stackers relies on the free-fall of the paper to reform on the stacking tray.
  • the flipping devices are quite accurate in stacking but become expensive due to the increased mechanism required and have a limited speed because of their inertia.
  • Another object of this invention is to provide apparatus for high speed stacking of fanfold paper which hastens restoration of the web "memory" of previous folds by making use of the paper inertia to add impetus to the refolding of both infolds and outfolds at the stacker tray.
  • a still further object of this invention is to provide stacking apparatus for continuous fanfold paper webs which maintains transverse bends in the paper to retain its flexibility during folding allowing more reliable formation of infolds and outfolds.
  • the main advantage offered by the invention is the provision of an apparatus for properly stacking fanfolded paper webs after leaving a printer in a safe, effective and simple manner.
  • infold and "outfold” are used frequently.
  • infold is intended to mean the folded edge of a fanfold web adjacent to the stack aligning surface in the stacker and the term “outfold” is intended to mean the folded edge of the web opposite the infold edge at the open side of the stack.
  • fanfolded paper 10 in the form of a web is carried from a source, not shown, between a reciprocating print head 11 and platen 12 by a pair of forms tractors 13 and 14, and is discharged at a point of release 15 between a deflector plate 16 and tractor door 17.
  • Pins 18 at the periphery of each tractor wheel engage marginal perforations in the web to move the paper.
  • Auxiliary stationary arches 19 support the web intermediate the tractor wheels and ramps 20 divert folds from the top edge of deflector 16.
  • Tractors 13, 14 are movably secured to square shaft 21 by means of release clamps 22 for adjustment to the width of the web.
  • Shaft 21 is driven by a suitable motor or power source, not shown.
  • Arched supports 19 can likewise be added or removed necessary for the web support.
  • Paper web 10 is discharged into a stacker that comprises generally a stack aligner panel 30 and stacker tray 31.
  • the aligner panel is supported on frame 32 and is tilted approximately 15° with respect to the vertical. It extends from the frame to the deflector plate 16 and serves as a support against which the incoming infold edges can rest as they accumulate into a stack.
  • Aligner plate 30 has ribs 33 formed thereon which engage the web. The tilt of the aligner may vary from 5° to 25° but has been found preferable at a slope at about 15°.
  • the aligner surface is shown as formed with ribs 33, it may be alternately made up of a plurality of rods, strips or slots.
  • Aligner panel 30 has mounted therewith a lead screw 34 which is directly coupled to motor 37 and rotatable in guides 35 and 36 at the rear of the aligner plate.
  • the lead screw is rotated in either direction by motor 37 mounted on the underside of frame 32 by an adapter bracket 38.
  • stacker tray 31 Attached to the lead screw by means of a traveling nut, not shown, is stacker tray 31.
  • the tray has a complex surface of first and second tray portions 40, 41 that form surfaces normal to the back plate and a transitional curve portion 42 joining the two flat portions.
  • Surface portion 40 is lower than the remaining surface of the tray to accommodate the build-up of infold edges.
  • the transverse transitional portion 42 limits the build-up to infold and outfold edges preventing additional build-up at the stack corners. Build-up occurs because the paper creases do not immediately refold to their former thicknesses.
  • Tray 31 is guided during changes in levels by rods 43 attached to frame 32.
  • motor 37 is controlled through a height control circuit 45 and a stack height sensor to maintain the required distance within an acceptable range of approximately 1 to 3 cm.
  • the sensor shown comprises a light source 46 and light detector 47 arranged to sense obliquely across the receiving surface. Other sensing devices and arrangements can also be used.
  • Height control circuit 45 employs a delay in the output of detector 47 to prevent the momentary blocking of the light beam by properly stacking incoming paper from actuating the motor to lower the tray. When the delay is exceeded, however, the motor operates to lower the stacking tray. When the printer is stopped, the tray may be lowered by an override switch. When printing resumes or after a stop, motor 37 acts to raise the tray until light is blocked and then again reverses to lower tray 31 a fixed increment. This action allows for recovery due to possible forms removal or stack attention during a stop condition.
  • the web When the paper is carried by tractors 13, 14 to the point of discharge 15, the web is then being directed downwardly toward tray 31.
  • the tray height is adjusted so that the receiving surface for the paper is less than a form length but greater than half a form length from the point of discharge.
  • Sufficient paper is fed through by the tractors to allow the leading form to be manually oriented on the tray so that the paper will fold in its original directions and thus properly orient succeeding infolds and outfolds. Thereafter, the stacker will operate independently.
  • Tray height can be adjusted to accommodate forms of different lengths by changing the location of the stack height sensor 47 and light source 46 at the sides of the aligner panel 30. Any adjustment should insure that the distance from the stack surface to the point of release is less than a form length and thereby maintain a more positive drilling force on the form.
  • a radius of the tractor doors along the lower edge 44 allows the web to bend outward in a transverse radius and maintain its flexibility without letting longitudinal bends develop.
  • Continued push by the tractor on the next form causes the preceding form to roll smoothly onto the already preceding stacked form.
  • the following form begins to roll toward the infold edge.
  • Deflector plate 16 in con- . junction with maintaining the control of a form by the tractors 13, 14 and tractor doors 17 provide a significant combination of guiding effects to restore the fold memory and initiate a transverse bend in the paper to insure a rolling flexibility as additional paper is pushed toward the stack. If the stacker tray did not have the two levels as shown, fold edges on either side tend to build higher than the center so that the stacked surface becomes dished with both the infold and outfold edges higher than the center.
  • the disclosed stacker may be modified in several aspects. Such modifications might include movement of the tray by different means, for example, by pneumatic means or by use of a belt or chain drive. Further, the input drive for the paper could be pressure or friction rolls instead of the tractor wheels. The form aligner plate could be coated with a low friction material in lieu of being ribbed.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Pile Receivers (AREA)
EP19810104442 1980-06-30 1981-06-10 Stacking device for fanfolded web Expired EP0043008B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16442780A 1980-06-30 1980-06-30
US164427 1988-03-04

Publications (2)

Publication Number Publication Date
EP0043008A1 EP0043008A1 (en) 1982-01-06
EP0043008B1 true EP0043008B1 (en) 1985-04-24

Family

ID=22594430

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810104442 Expired EP0043008B1 (en) 1980-06-30 1981-06-10 Stacking device for fanfolded web

Country Status (3)

Country Link
EP (1) EP0043008B1 (ja)
JP (1) JPS5727869A (ja)
DE (1) DE3170104D1 (ja)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2560862B1 (fr) * 1984-03-07 1987-11-06 Bull Sa Appareil pour le repliage en accordeon d'une bande continue souple
US4922267B1 (en) * 1984-05-19 1995-04-11 Canon Kk Recorder having a recording device and a relatively movable stacker for stacking recorded paper.
US4651173A (en) * 1984-05-19 1987-03-17 Canon Kabushiki Kaisha Continuous-form recorder having decrumpling means for removing creases in the form
US4707156A (en) * 1984-05-24 1987-11-17 Microcomputer Accessories Inc. Printer stand and paper refolding apparatus
JPS6255138A (ja) * 1985-09-04 1987-03-10 Toray Ind Inc 連続紙の間欠送り装置
JPH0734058Y2 (ja) * 1986-09-25 1995-08-02 三菱電機株式会社 帯状体の折りたたみ装置
US5039242A (en) * 1989-12-22 1991-08-13 Spectra-Physics, Inc. Z-fold paper retainer
US6140662A (en) * 1998-09-11 2000-10-31 Hewlett-Packard Company Sensing system and method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2273162A (en) * 1940-07-19 1942-02-17 Gilman Fanfold Corp Strip separating mechanism
US3386729A (en) * 1965-07-16 1968-06-04 Uarco Inc Deleaver
DE2251324A1 (de) * 1972-10-19 1974-05-02 Rena Bueromaschf Gmbh Vorrichtung zur ablage einer vorgefalzten endlosbahn, insbesondere aus papier
US4189133A (en) * 1978-11-03 1980-02-19 International Business Machines Corporation Document stacking table lowering method, apparatus and controlling circuitry therefor

Also Published As

Publication number Publication date
DE3170104D1 (en) 1985-05-30
JPS5727869A (en) 1982-02-15
EP0043008A1 (en) 1982-01-06
JPS6251857B2 (ja) 1987-11-02

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