EP1752836B1 - Dispositif de fixage par fusion de toner avec fourniture d'huile de fixage - Google Patents

Dispositif de fixage par fusion de toner avec fourniture d'huile de fixage Download PDF

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Publication number
EP1752836B1
EP1752836B1 EP20050017603 EP05017603A EP1752836B1 EP 1752836 B1 EP1752836 B1 EP 1752836B1 EP 20050017603 EP20050017603 EP 20050017603 EP 05017603 A EP05017603 A EP 05017603A EP 1752836 B1 EP1752836 B1 EP 1752836B1
Authority
EP
European Patent Office
Prior art keywords
roller
fusion
fusing
spreading
working
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 - Fee Related
Application number
EP20050017603
Other languages
German (de)
English (en)
Other versions
EP1752836A1 (fr
Inventor
Sönke SCHMIDT
Wolfgang Eberhard Luxem
Gregory Leo Kowalsky
Rüdiger Schlien
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to DE200560005472 priority Critical patent/DE602005005472T2/de
Priority to EP20050017603 priority patent/EP1752836B1/fr
Publication of EP1752836A1 publication Critical patent/EP1752836A1/fr
Application granted granted Critical
Publication of EP1752836B1 publication Critical patent/EP1752836B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • G03G15/20—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
    • G03G15/2025—Structural details of the fixing unit in general, e.g. cooling means, heat shielding means with special means for lubricating and/or cleaning the fixing unit, e.g. applying offset preventing fluid
    • 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
    • G03G2215/20—Details of the fixing device or porcess
    • G03G2215/2093—Release agent handling devices

Definitions

  • the invention relates to a device for fusing toner, in particular powder toner, to a printing material, said device comprising at least one fusion roller, which can be warmed or heated for fusing and which contacts the toner; a donor roller which is in abutting contact with a surface of the fusion roller; and at least one working roller, which is preferably arranged axis-parallel to the fusion roller and is in abutting contact with a surface of the donor roller, or which can be brought into abutting contact with the surface of the donor roller.
  • this device comprises metering rollers for the removal of fusing oil from a fusing oil bath, an applicator or donor roller for the application and transfer of the picked-up fusing oil to the fusion roller, a spreading roller for the uniform spreading of the fusing oil on the fusion roller, and a cleaning roller for cleaning the spreading roller.
  • This fusion roller is arranged in an axis-parallel manner with respect to said working rollers.
  • a fusing oil film is applied to the fusion roller, so that, after fusing, the heated or melt-deposited toner detaches more easily from the fusion roller and does not adhere to said fusion roller.
  • Adhering toner would contaminate the fusion roller for subsequent fusing operations and, as a result, subsequently fused prints would be negatively affected.
  • the fusing oil can also impair subsequently fused prints, in particular for example, create shiny streaks on subsequent printed images if said fusing oil is applied in too large an amount, or not uniformly, to the fusion roller. In the worst case, the entire transport path used by the printing material could be contaminated by fusing oil and, in particular, also damage verso prints.
  • this object is achieved in that the working roller, or at least one working roller, can be moved in an oscillating manner in its axial direction.
  • the axial motion ensures a uniform and controlled film by spreading and/or eliminating said film.
  • the working roller can be driven in an oscillating manner, in which case appropriately suitable drives are known per se from other contexts, for example, from ink friction wheels used in the rotary press printing machines of DE-A-42 31 260 .
  • the axially movable working roller may be any of the aforementioned rollers, in particular also a cleaning roller; however, a development of the invention preferably provides that the working roller is a spreading roller or a friction roller for spreading a liquid fusion adjuvant, specifically a fusing oil. As a result of this, in accordance with the invention, the film is spread and controlled particularly well on the fusion roller in order to specifically avoid streaking.
  • the spreading roller is in contact with an axis-parallel donor roller, which, in turn, applies or transfers the fusion adjuvant to the fusion roller.
  • the film is adjusted in a uniform and controlled manner even before its transfer to the fusion roller.
  • the spreading roller could be arranged in an axis-parallel manner between the donor roller and a removal or metering roller that acts as transfer member and removes the fusion adjuvant from a reservoir, however, the spreading roller is preferably arranged next to the metering roller in order to avoid a longer transfer link chain which, due to friction losses, could impair the rotation of all the rollers.
  • One embodiment of an inventive device is shown in the drawing by a single figure, depicted schematically and basically only in side elevation or in a sectional view.
  • a friction roller 7 abuts against donor roller 6, said friction roller being drivable in accordance with the invention in such a manner that it oscillates in its axial direction and, at the same time, being rotatable in the direction opposite donor roller 6, so that the fusing oil film on donor roller 6 is spread even more uniformly in a controlled manner.
  • friction roller 7 could be provided as an intermediate member between donor roller 7 and metering roller 4.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fixing For Electrophotography (AREA)

Claims (7)

  1. Dispositif pour fondre un toner, en particulier un toner en poudre vers un matériau d'impression, ledit dispositif comprenant :
    un rouleau de fusion (1), qui peut être chauffé et qui est en contact avec le toner pendant la fusion ;
    un rouleau de donneur (6) qui est en contact bout à bout avec la surface du rouleau de fusion (1) pour appliquer un additif de fusion liquide sur la surface du rouleau de fusion (1) ; et
    un rouleau de travail (7) qui est disposé, de préférence, parallèlement à l'axe du rouleau de fusion (1) et en contact bout à bout avec la surface du rouleau de donneur (6), ou qui peut être mis en contact bout à bout avec ladite surface du rouleau de donneur (6)
    caractérisé en ce que
    le rouleau de travail (7) peut être déplacé de manière oscillante dans sa direction axiale.
  2. Dispositif selon la revendication 1, dans lequel le rouleau de travail peut être entraîné de manière oscillante.
  3. Dispositif selon la revendication 1 ou 2, dans lequel le rouleau de travail est un rouleau d'enduction ou un rouleau à friction permettant d'étendre l'additif de fusion liquide, notamment, une huile de fusion.
  4. Dispositif selon la revendication 3, dans lequel le rouleau de donneur est parallèle à l'axe du rouleau de travail.
  5. Dispositif selon la revendication 4, dans lequel le rouleau de travail est un rouleau d'enduction, et dans lequel le rouleau d'enduction est disposé parallèlement entre le rouleau de donneur et un rouleau doseur qui tire l'additif de fusion d'un réservoir et sert d'élément de transfert pour l'additif de fusion.
  6. Dispositif selon l'une quelconque des revendications 3 à 5, dans lequel le rouleau de travail est un rouleau d'enduction, et dans lequel la surface du rouleau d'enduction est constituée d'un matériau dur et très peu élastique.
  7. Dispositif selon la revendication 6, dans lequel la surface du rouleau d'enduction a été lissée.
EP20050017603 2005-08-12 2005-08-12 Dispositif de fixage par fusion de toner avec fourniture d'huile de fixage Expired - Fee Related EP1752836B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE200560005472 DE602005005472T2 (de) 2005-08-12 2005-08-12 Vorrichtung zur Fixierung von Toner
EP20050017603 EP1752836B1 (fr) 2005-08-12 2005-08-12 Dispositif de fixage par fusion de toner avec fourniture d'huile de fixage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20050017603 EP1752836B1 (fr) 2005-08-12 2005-08-12 Dispositif de fixage par fusion de toner avec fourniture d'huile de fixage

Publications (2)

Publication Number Publication Date
EP1752836A1 EP1752836A1 (fr) 2007-02-14
EP1752836B1 true EP1752836B1 (fr) 2008-03-19

Family

ID=35455986

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050017603 Expired - Fee Related EP1752836B1 (fr) 2005-08-12 2005-08-12 Dispositif de fixage par fusion de toner avec fourniture d'huile de fixage

Country Status (2)

Country Link
EP (1) EP1752836B1 (fr)
DE (1) DE602005005472T2 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3924564A (en) * 1975-01-13 1975-12-09 Xerox Corp Fusing apparatus having an articulated release material dispenser
DE4231260C2 (de) 1992-09-18 1996-05-23 Heidelberger Druckmasch Ag Druckantrieb für Farbtransportwalzen einer Rotationsdruckmaschine
DE69738252T2 (de) 1997-03-14 2008-08-14 Punch Graphix International N.V. System zum Aufbringen von Fixieröl auf einer Schmelzfixiereinheit

Also Published As

Publication number Publication date
DE602005005472T2 (de) 2009-04-16
EP1752836A1 (fr) 2007-02-14
DE602005005472D1 (de) 2008-04-30

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