EP0330276A2 - Dispositif pour presser une pile de feuilles de papier contre des rouleaux de séparation - Google Patents

Dispositif pour presser une pile de feuilles de papier contre des rouleaux de séparation Download PDF

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Publication number
EP0330276A2
EP0330276A2 EP89200408A EP89200408A EP0330276A2 EP 0330276 A2 EP0330276 A2 EP 0330276A2 EP 89200408 A EP89200408 A EP 89200408A EP 89200408 A EP89200408 A EP 89200408A EP 0330276 A2 EP0330276 A2 EP 0330276A2
Authority
EP
European Patent Office
Prior art keywords
guide shaft
arrangement according
leaf spring
cassette
pressure
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
EP89200408A
Other languages
German (de)
English (en)
Other versions
EP0330276A3 (en
EP0330276B1 (fr
Inventor
Udo Weiss
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.)
Philips Intellectual Property and Standards GmbH
Koninklijke Philips NV
Original Assignee
Philips Patentverwaltung GmbH
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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 Philips Patentverwaltung GmbH, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Philips Patentverwaltung GmbH
Publication of EP0330276A2 publication Critical patent/EP0330276A2/fr
Publication of EP0330276A3 publication Critical patent/EP0330276A3/de
Application granted granted Critical
Publication of EP0330276B1 publication Critical patent/EP0330276B1/fr
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
    • B65H1/00—Supports or magazines for piles from which articles are to be separated
    • B65H1/08—Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device
    • B65H1/12—Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device comprising spring

Definitions

  • the invention relates to an arrangement for pressing a stack of paper sheets lying on a pressure plate in a cassette against separating rollers for single sheet removal, e.g. in the case of a printer, with a guide shaft mounted at the beginning of the cassette, on which the pressure plate, which is under spring pressure, can be pivoted on one side and is supported with an adjustable contact pressure.
  • Such an arrangement is e.g. made known by DE-OS 34 27 514.
  • the pressure spring generating the contact pressure is attached to a special slide, which in turn is mounted on a carrier plate mounted on the guide shaft.
  • the contact pressure is adjusted by means of various locking positions of the spring within the slide.
  • the invention has for its object to simplify an arrangement of the type mentioned with regard to the adjustability of the contact pressure.
  • This object is achieved according to the invention in that the one end of a leaf spring rotatably with the rotatably mounted Guide shaft is coupled, while the other end of the leaf spring rests directly on the pressure plate, and that the guide shaft is arranged in different rotational positions.
  • a special carrier plate for holding the leaf spring is superfluous.
  • the leaf spring is attached to the already existing guide shaft for the pressure plate with simple means.
  • the adjustability of the contact pressure is carried out according to the invention in a simple manner by turning the lockably arranged guide shaft.
  • the one end of the leaf spring is mounted in a molded part that is positively connected to the guide shaft.
  • This enables easy mounting of the leaf spring with the rotatable guide shaft.
  • a simple, non-rotatable coupling between the leaf spring on the one hand and the guide shaft on the other hand takes place in a further embodiment of the invention in that the guide shaft is flattened, ie has a D-shaped cross section, and that the inner bore of the molded part is adapted to this cross-sectional profile of the guide shaft.
  • the molded part can be slid in the longitudinal direction of the guide shaft.
  • the molded part has two lateral webs with D-shaped openings adapted to the shape of the guide shaft and fastening means for holding one end of the leaf spring.
  • the bracket is convenient characterized in that a support with lateral grooves and at least one latching cam is provided between the webs, the leaf spring end received by the grooves having at least one latching opening for engagement of the latching cam. This ensures on the one hand a secure positive connection and on the other hand a secure mounting of the end of the leaf spring on the molded part.
  • the leaf spring held at one end in the molded part slides with its free end on the underside of the pressure plate, so that when the guide shaft rotates, a secure transmission of force to the pressure plate is ensured without the risk of jamming.
  • the arcuate shape according to a further advantageous embodiment of the invention ensures a sufficient contact pressure at all times.
  • the guide shaft is actuated in a simple manner, preferably via a lever which is arranged in the lateral region of the cassette and is non-rotatably connected to the guide shaft.
  • this lever can preferably be locked in a first position on the cassette in the pivoted-off state.
  • the lever is used to swivel the pressure plates to allow the paper to be inserted.
  • the lever can preferably be locked in several positions in the swiveled-in state, the lever engaging in a rotating part, which in turn is arranged to be fixable in several positions on the cassette.
  • a cassette preferably has two pressure plates which are rotatably mounted on the same guide shaft and can be actuated simultaneously and in the same sense when the guide shaft is actuated.
  • These pressure plates can be arranged such that either both are displaceable or non-displaceably mounted in the longitudinal direction of the guide shaft or that only one of the two pressure plates is longitudinally displaceable, while the other e.g. is immovably arranged on a side edge of the cassette. Different paper sizes can thus be taken into account in a simple manner.
  • the simple arrangement according to the invention for adjusting the pressure forces between paper and separating rollers makes it possible to process different types of paper and paper weights in a reliable manner.
  • the pressure forces can be changed with a single lever with an effect on both pressure plates, wherein the pressure plates can be arranged to be displaceable or lockable in the direction of the guide shaft.
  • FIG. 1 shows a cassette 10 with side walls 11 for receiving a stack of paper 12.
  • separating rollers 13 are arranged, which are part of a device for single sheet removal.
  • the separating rollers 13 are driven by a drive, not shown.
  • a guide shaft 14 rotatably mounted in the side walls 11, on which two pressure plates 15, 16 are rotatably arranged.
  • the guide shaft 14 has a flat 17 and carries two molded parts 18, 19 for receiving two leaf springs 20, 21 with their ends 20a, 21a.
  • the inner bores of the molded parts (guide parts 18, 19) sit positively on the flattened guide shaft 14.
  • the free ends 20b, 21b lie freely on the underside of the pressure plates 15, 16.
  • the guide shaft 14 is actuated by a laterally attached lever 22, which is firmly connected to the guide shaft 14 and is adjustable from the outside.
  • the lever 22 is used to pivot the pressure plates 15, 16 to insert the paper 12 possible.
  • the end position determines the size of the pressure.
  • the lever 22 engages in an additional rotating part 23, which can be fixed to the cassette in three positions 23a, 23b, 23c, for example. This creates a separation between paper loading and pressure setting.
  • FIG. 3 shows a partial view in direction A according to FIG. 1.
  • the lever 22 engages with a projection 22a either in a locking opening 10a of the cassette (position 24) or - after rotation - in locking openings 23 'of the rotating part 23 (positions 25 / 23a, 23b, 23c).
  • the rotating part 23 is rotatably mounted on the guide shaft 14 and has a latching cam 23 ⁇ for engaging in latching openings 10b of the cassette 10.
  • Fig. 4 shows in three different views, partly. on average, a plastic guide part 19 with lateral webs 26, whose D-shaped openings 27 are adapted to the cross-sectional profile of the guide shaft 14.
  • a support for the end 21a of a leaf spring 21 is designated, which is held by lateral clamping grooves 29.
  • a pin is designated, which engages in a corresponding latching opening of the leaf spring 21, whereby a reliable mounting of the leaf spring 21 in the guide part 19 is ensured.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
EP89200408A 1988-02-25 1989-02-20 Dispositif pour presser une pile de feuilles de papier contre des rouleaux de séparation Expired - Lifetime EP0330276B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3805822A DE3805822A1 (de) 1988-02-25 1988-02-25 Anordnung zum anpressen eines papierstapels gegen vereinzelungsrollen
DE3805822 1988-02-25

Publications (3)

Publication Number Publication Date
EP0330276A2 true EP0330276A2 (fr) 1989-08-30
EP0330276A3 EP0330276A3 (en) 1990-12-27
EP0330276B1 EP0330276B1 (fr) 1993-05-19

Family

ID=6348086

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89200408A Expired - Lifetime EP0330276B1 (fr) 1988-02-25 1989-02-20 Dispositif pour presser une pile de feuilles de papier contre des rouleaux de séparation

Country Status (4)

Country Link
US (1) US4982943A (fr)
EP (1) EP0330276B1 (fr)
JP (1) JPH01261128A (fr)
DE (2) DE3805822A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5005820A (en) * 1989-06-23 1991-04-09 International Business Machines Corporation Paper tray with leaf spring
EP0503573A3 (en) * 1991-03-11 1993-01-20 Canon Kabushiki Kaisha Sheet supplying apparatus
US6499736B2 (en) * 2000-12-01 2002-12-31 Benq Corporation Paper feeder for papers with different thickness

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4006413A1 (de) * 1990-03-01 1991-09-05 Lakufol Kunststoffe Gmbh & Co Stretchfolie
DE69104773T2 (de) * 1990-05-21 1995-03-02 Ishikawajima Harima Heavy Ind Hitzeschutzelement.
US6149147A (en) * 1997-10-08 2000-11-21 Samsung Electronics Co., Ltd. Paper pickup device in paper feeding cassette
DE10209428A1 (de) * 2002-03-05 2003-09-18 Florian Betz Vorrichtung zum Transport von einzelnen losen Blättern
US20070063423A1 (en) * 2005-09-16 2007-03-22 Kirby Alfred D Media bed

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5742862B2 (fr) * 1974-05-18 1982-09-10
US4089402A (en) * 1976-07-01 1978-05-16 Hy Grip Products Co. Sheet feeding mechanism for an automatic typewriter
US4219192A (en) * 1978-01-03 1980-08-26 Pitney Bowes Inc. Sheet loading and storing assembly
JPS5540156A (en) * 1978-09-13 1980-03-21 Ricoh Co Ltd Trouble eliminating device in paper feeding equipment
JPS56145041A (en) * 1980-04-14 1981-11-11 Ricoh Co Ltd Adjustment device of paper-feeding pressure to feed roller for paper accumulated in cassette
JPS574835A (en) * 1980-06-05 1982-01-11 Ricoh Co Ltd Paper containing device
DE3427514A1 (de) * 1984-07-26 1986-02-06 Philips Patentverwaltung Gmbh, 2000 Hamburg Vorrichtung an einem einzelblattabzug fuer drucker und dergleichen
JPS6216948A (ja) * 1985-07-15 1987-01-26 Ricoh Co Ltd 給紙装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5005820A (en) * 1989-06-23 1991-04-09 International Business Machines Corporation Paper tray with leaf spring
EP0503573A3 (en) * 1991-03-11 1993-01-20 Canon Kabushiki Kaisha Sheet supplying apparatus
US5398108A (en) * 1991-03-11 1995-03-14 Canon Kabushiki Kaisha Sheet supplying apparatus having a plurality of pressurizing means
EP0638495A3 (fr) * 1991-03-11 1995-04-12 Canon Kk Appareil d'alimentation de feuilles.
US6499736B2 (en) * 2000-12-01 2002-12-31 Benq Corporation Paper feeder for papers with different thickness

Also Published As

Publication number Publication date
US4982943A (en) 1991-01-08
DE58904377D1 (de) 1993-06-24
DE3805822A1 (de) 1989-09-07
JPH01261128A (ja) 1989-10-18
EP0330276A3 (en) 1990-12-27
EP0330276B1 (fr) 1993-05-19

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