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WO1997010533A1 - Etrier guide d'une station de fixage avec bord deflecteur anti-usure - Google Patents

Etrier guide d'une station de fixage avec bord deflecteur anti-usure Download PDF

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Publication number
WO1997010533A1
WO1997010533A1 PCT/DE1996/001589 DE9601589W WO9710533A1 WO 1997010533 A1 WO1997010533 A1 WO 1997010533A1 DE 9601589 W DE9601589 W DE 9601589W WO 9710533 A1 WO9710533 A1 WO 9710533A1
Authority
WO
WIPO (PCT)
Prior art keywords
fixing device
fixing
recording medium
saddle
edge
Prior art date
Application number
PCT/DE1996/001589
Other languages
German (de)
English (en)
Inventor
Wilhelm-Georg Dommel
Norbert Mendisch
Josef Windele
Original Assignee
OCé PRINTING SYSTEMS GMBH
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 OCé PRINTING SYSTEMS GMBH filed Critical OCé PRINTING SYSTEMS GMBH
Publication of WO1997010533A1 publication Critical patent/WO1997010533A1/fr

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/65—Apparatus which relate to the handling of copy material
    • G03G15/6517—Apparatus for continuous web copy material of plain paper, e.g. supply rolls; Roll holders therefor
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
    • G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
    • G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
    • G03G15/2017—Structural details of the fixing unit in general, e.g. cooling means, heat shielding means
    • G03G15/2028—Structural details of the fixing unit in general, e.g. cooling means, heat shielding means with means for handling the copy material in the fixing nip, e.g. introduction guides, stripping means
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/65—Apparatus which relate to the handling of copy material
    • G03G15/6588—Apparatus which relate to the handling of copy material characterised by the copy material, e.g. postcards, large copies, multi-layered materials, coloured sheet material
    • G03G15/6591—Apparatus which relate to the handling of copy material characterised by the copy material, e.g. postcards, large copies, multi-layered materials, coloured sheet material characterised by the recording material, e.g. plastic material, OHP, ceramics, tiles, textiles
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00367—The feeding path segment where particular handling of the copy medium occurs, segments being adjacent and non-overlapping. Each segment is identified by the most downstream point in the segment, so that for instance the segment labelled "Fixing device" is referring to the path between the "Transfer device" and the "Fixing device"
    • G03G2215/00413—Fixing device
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00443—Copy medium
    • G03G2215/00451—Paper

Definitions

  • the invention relates to a fixing device for fixing toner images on a tape-shaped recording medium in a printing or copying device.
  • a fixing device of the type mentioned is known from DE-C2- 4235668. It contains a guide saddle with a deflection edge over which the recording medium is fed to the actual fixing area.
  • This guide saddle can serve on the one hand to heat the recording medium, and on the other hand it stabilizes the recording medium run.
  • the record carrier slides over the sliding surface of the saddle and the deflection edge.
  • the deflection edge is subject to much higher wear than the sliding surface. If the deflecting edge is worn, this leads to an inaccurate feeding of the recording medium to the subsequent fixing area, which significantly impairs the fixing quality and thus the print quality.
  • the entire guide saddle must be replaced. This is complex and causes an undesired long interruption of the printing operation or makes it necessary to readjust the entire fixing station.
  • the object of the invention is therefore to design a fixing device of the type mentioned at the outset in such a way that wear occurring in particular in the region of the deflecting edge of the guide saddle can be remedied in a very short time without changing the entire guide saddle.
  • the deflection edge is designed to be exchangeable and, at least in the area of contact with the recording medium, is made of highly wear-resistant material, there is no need to completely replace the deflection saddle in the event of wear. This avoids long interruptions in operation of the printing device. There is no need for time-consuming readjustment of the fixing station.
  • the deflection edge consists of a surface-hardened steel shaft, which is arranged in a receiving groove at the end of the guide saddle so that it can rotate.
  • the steel shaft can be rotated by simply releasing the holder, and a new, unused area can thus be brought into contact with the recording medium. The original state is thus restored without readjustment.
  • FIG. 1 shows a schematic side view of a fixing station with an unheated pivoting saddle having an exchangeable deflecting edge
  • FIG. 2 shows a plan view of the region of the exchangeable deflecting edge of the fixing station in FIG. 1,
  • FIG. 3 shows a schematic side view of a fixing station with a heated swivel saddle and an exchangeable deflecting edge
  • FIG. 4 shows a plan view of the region of the exchangeable deflecting edge of the fixing station in FIG. 3.
  • An electrographic printing device for printing tape-like recording media of different tape widths contains a heat-setting station shown in FIGS. 1 and 2.
  • the heat-setting station is designed to accommodate two recording medium webs which are guided next to one another and which are coupled via a turning device. This enables duplex printing on a continuous paper web, a front toner image being fixed in the first pass through the fixing station and, after deflection in the second parallel pass, a rear toner image being fixed on the paper web.
  • the fixing station essentially consists of a heated fixing roller 10 with a pressure roller 11 which can be pivoted on and off the fixing roller 10 and between which the recording medium 12 is guided.
  • a toner image adhering to the surface of the recording medium 12 is fixed in the known manner in the fixing gap between the rollers 10 and 11 by pressure and heat.
  • a pivotable guide saddle 13 arranged upstream of the rollers 10, 11 in the direction of the recording medium serves to feed the paper web 12 (recording medium) to the fixing gap between the rollers. Since the paper web 12 can already carry a fixed toner image on its rear side, the guide saddle 13 is unheated.
  • the paper web 13 with the toner image to be fixed is guided around the fixing roller 10 at a wrap angle for preheating.
  • the paper web 12 initially slides over a polished, optionally coated with PTFE sliding surface 14 of the steel guide saddle 13 and is deflected in the region of a deflection edge 15.
  • the guide saddle 13 is slightly bent in the outlet area, so that the paper web 12 of the deflecting edge 15 is fed straight and smoothly.
  • the deflection edge 15 in the illustrated embodiment consists of a steel shaft 16 extending over the width of the guide saddle 13 with a nitrided, hardened surface with a diameter of 10 mm.
  • Steel shaft 16 is in turn fixed in a rotationally secure manner on one of the tabs by means of a fastening screw 21. Secure against rotation because the small radius of the steel shaft also serves as a smoothing edge for the paper web 12. In the event of wear, the fastening screw 21 on the steel shaft 16 is loosened and the shaft 16 rotated by approximately 45 °. In this way, up to eight wear cycles can be used. If this is not sufficient for the life of the device, the steel shaft 16 can be easily replaced by loosening a fastening tab 20.
  • the guide saddle 13 consists of a preheating saddle with heating elements integrated therein, as is described in more detail in DE-C2-4235668.
  • a steel shaft 16 is used as a deflection edge, which is fastened in a rotationally fixed manner in a precisely fitting receiving groove 18 of the guide saddle 13 via a holder 17.
  • the paper images carrying the toner images are preheated in a known manner in simplex mode prior to the actual fixing in the fixing gap.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Textile Engineering (AREA)
  • Fixing For Electrophotography (AREA)

Abstract

Dispositif de fixage destiné à fixer les images de toner sur un support en ruban (12) dans une imprimante ou une photocopieuse, comportant une zone de thermofixage pourvue d'un cylindre de fixage (10, 11) et d'un étrier guide (13) pouvant pivoter en fonction des besoins, placé en amont de la zone de thermofixage par rapport au sens de progression du support. L'étrier présente, au niveau de son extrémité tournée vers la zone de fixage, un bord déflecteur (15) qui amène le support (12) à la zone de thermofixage. Le bord déflecteur (15) se présente de préférence sous forme d'un arbre en acier (16) anti-usure, pouvant être monté rotatif dans un support (17) de l'étrier guide.
PCT/DE1996/001589 1995-09-12 1996-08-27 Etrier guide d'une station de fixage avec bord deflecteur anti-usure WO1997010533A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1995133717 DE19533717C1 (de) 1995-09-12 1995-09-12 Führungssattel in einer Fixierstation mit verschleißarmer Umlenkkante
DE19533717.4 1995-09-12

Publications (1)

Publication Number Publication Date
WO1997010533A1 true WO1997010533A1 (fr) 1997-03-20

Family

ID=7771927

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1996/001589 WO1997010533A1 (fr) 1995-09-12 1996-08-27 Etrier guide d'une station de fixage avec bord deflecteur anti-usure

Country Status (2)

Country Link
DE (1) DE19533717C1 (fr)
WO (1) WO1997010533A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009024912A1 (de) 2009-06-15 2011-02-03 OCé PRINTING SYSTEMS GMBH Vorrichtung und Verfahren zum Ändern der Temperatur einer Bedruckstoffbahn in einem Drucker oder Kopierer

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5936274A (ja) * 1982-08-24 1984-02-28 Canon Inc 定着装置
EP0572050A2 (fr) * 1989-12-13 1993-12-01 Siemens Nixdorf Informationssysteme Aktiengesellschaft Appareil d'impression Electrofotographique pour l'impression sur les deux faces d'une bande de papier sans fin, comprenant une unité de fixage thermique
DE4235668A1 (de) * 1992-10-22 1994-04-28 Siemens Nixdorf Inf Syst Wärmefixiereinrichtung mit einer Glättungskante am Vorwärmsattel
WO1994027193A1 (fr) * 1993-05-19 1994-11-24 Siemens Nixdorf Informationssysteme Aktiengesellschaft Dispositif d'impression electrographique de supports d'enregistrement sous forme de bandes de differentes largeurs

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5936274A (ja) * 1982-08-24 1984-02-28 Canon Inc 定着装置
EP0572050A2 (fr) * 1989-12-13 1993-12-01 Siemens Nixdorf Informationssysteme Aktiengesellschaft Appareil d'impression Electrofotographique pour l'impression sur les deux faces d'une bande de papier sans fin, comprenant une unité de fixage thermique
DE4235668A1 (de) * 1992-10-22 1994-04-28 Siemens Nixdorf Inf Syst Wärmefixiereinrichtung mit einer Glättungskante am Vorwärmsattel
WO1994027193A1 (fr) * 1993-05-19 1994-11-24 Siemens Nixdorf Informationssysteme Aktiengesellschaft Dispositif d'impression electrographique de supports d'enregistrement sous forme de bandes de differentes largeurs

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 008, no. 133 (P - 281) 20 June 1984 (1984-06-20) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009024912A1 (de) 2009-06-15 2011-02-03 OCé PRINTING SYSTEMS GMBH Vorrichtung und Verfahren zum Ändern der Temperatur einer Bedruckstoffbahn in einem Drucker oder Kopierer

Also Published As

Publication number Publication date
DE19533717C1 (de) 1997-04-10

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