EP1752836A1 - Toner fusing device with a supply of fusing oil - Google Patents
Toner fusing device with a supply of fusing oil Download PDFInfo
- Publication number
- EP1752836A1 EP1752836A1 EP05017603A EP05017603A EP1752836A1 EP 1752836 A1 EP1752836 A1 EP 1752836A1 EP 05017603 A EP05017603 A EP 05017603A EP 05017603 A EP05017603 A EP 05017603A EP 1752836 A1 EP1752836 A1 EP 1752836A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- fusion
- fusing
- toner
- spreading
- 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
Links
Images
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, and comprising at least one working roller, which is preferably arranged axis-parallel to the fusion roller and is in abutting contact with the surface of the fusion roller, or which can be brought into abutting contact with the surface of the fusion roller.
- a device of the aforementioned type has been known from EP-A-0 864 941 .
- 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.
- the object of the invention is to further improve a device of the aforementioned type in view of a controlled and/or uniform film of a liquid fusion adjuvant.
- 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.
- the spreading roller which can be moved in axial direction in accordance with the invention, is intended to be only in linear abutment, this being achieved by making the surface of the spreading roller of a hard and largely inelastic material.
- the surface of the spreading roller may be smoothed, or more particularly, polished.
- 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.
- the figure shows a fusion roller 1, which can be driven by means of a rotation generator 2 to rotate in the direction of the arrow.
- Fusion roller 1 is used to fuse a printing image to a printing material 8; to achieve this, said fusion roller can be heated in order to melt-deposit a preferably powder-shaped toner that forms the printed image on a printing material 8 and to incorporate said toner in said printing material.
- fusion roller 1 works together with an impression cylinder 9, which is only suggested in the drawing.
- a film of a fusing oil is first applied in a uniformly spread manner to the fusion roller, namely to the generated surface of fusion roller 1. This is done with a donor roller 6 that rotates in a direction opposite to fusion roller 1, said donor roller, in turn, receiving the fusing oil from a metering roller 4, which removes the fusing oil from a fusing oil reservoir 3. To do so, metering roller 4 is immersed below fluid level 10 of a fusing bath. The thusly removed fusing oil is first spread and squegeed by means of a squegee 5 to form a film on metering roller 4 before said film is transferred to donor roller 6.
- 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.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fixing For Electrophotography (AREA)
Abstract
Therefore, the object of the invention is to further improve a device of the aforementioned type in view of a controlled and/or uniform film of a liquid fusion adjuvant.
In accordance with the invention, this object is achieved in that the working roller (6,7) or at least one working roller (6,7) can be moved in an oscillating manner in its axial direction.
Description
- 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, and comprising at least one working roller, which is preferably arranged axis-parallel to the fusion roller and is in abutting contact with the surface of the fusion roller, or which can be brought into abutting contact with the surface of the fusion roller.
- A device of the aforementioned type has been known from
EP-A-0 864 941 . In addition to the fusion 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. - Before each fusing operation, 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. However, 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.
- Therefore, the object of the invention is to further improve a device of the aforementioned type in view of a controlled and/or uniform film of a liquid fusion adjuvant.
- In accordance with the invention, 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.
- Preferably, 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.
- Preferably, 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. In so doing, the film is adjusted in a uniform and controlled manner even before its transfer to the fusion roller. To achieve this, 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. Therefore, preferably, the spreading roller, which can be moved in axial direction in accordance with the invention, is intended to be only in linear abutment, this being achieved by making the surface of the spreading roller of a hard and largely inelastic material. In addition, the surface of the spreading roller may be smoothed, or more particularly, polished.
- 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.
- The figure shows a fusion roller 1, which can be driven by means of a
rotation generator 2 to rotate in the direction of the arrow. Fusion roller 1 is used to fuse a printing image to aprinting material 8; to achieve this, said fusion roller can be heated in order to melt-deposit a preferably powder-shaped toner that forms the printed image on aprinting material 8 and to incorporate said toner in said printing material. To achieve this, fusion roller 1 works together with animpression cylinder 9, which is only suggested in the drawing. - To prevent the toner after the fusing step from adhering to fusion roller 1, a film of a fusing oil is first applied in a uniformly spread manner to the fusion roller, namely to the generated surface of fusion roller 1. This is done with a
donor roller 6 that rotates in a direction opposite to fusion roller 1, said donor roller, in turn, receiving the fusing oil from a metering roller 4, which removes the fusing oil from afusing oil reservoir 3. To do so, metering roller 4 is immersed belowfluid level 10 of a fusing bath. The thusly removed fusing oil is first spread and squegeed by means of asquegee 5 to form a film on metering roller 4 before said film is transferred todonor roller 6. - In addition, a
friction roller 7 abuts againstdonor 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 oppositedonor roller 6, so that the fusing oil film ondonor roller 6 is spread even more uniformly in a controlled manner. Alternatively,friction roller 7 could be provided as an intermediate member betweendonor roller 7 and metering roller 4.
Claims (7)
- 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 and which contacts the toner for fusing, and comprising at least one working roller which is arranged preferably axis-parallel to the fusion roller and in abutting contact with the surface of the fusion roller, or which can be brought into abutting contact with said fusion roller,
characterized in that
the working roller can be moved in an oscillating manner in its axial direction. - Device as in Claim 1, characterized in that the working roller can be driven in an oscillating manner.
- Device as in Claim 1 or 2, characterized in that the working roller is a spreading roller or friction roller for spreading a liquid fusion adjuvant, in particular, a fusing oil.
- Device as in Claim 3, characterized in that the spreading roller contacts an axis-parallel donor roller, which, in turn, applies or transfers the fusion adjuvant to the fusion roller.
- Device as in Claim 4, characterized in that the spreading roller is arranged in an axis-parallel manner between the donor roller and a removal roller or metering roller, which removes a fusion adjuvant from a reservoir and is arranged as a transfer member for the fusion adjuvant.
- Device as in one of the Claims 3 through 5, characterized in that the surface of the spreading roller is made of a hard and largely inelastic material.
- Device as in Claim 6, characterized in that the surface of the spreading roller has been smoothed.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20050017603 EP1752836B1 (en) | 2005-08-12 | 2005-08-12 | Toner fusing device with a supply of fusing oil |
DE200560005472 DE602005005472T2 (en) | 2005-08-12 | 2005-08-12 | Device for fixing toner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20050017603 EP1752836B1 (en) | 2005-08-12 | 2005-08-12 | Toner fusing device with a supply of fusing oil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1752836A1 true EP1752836A1 (en) | 2007-02-14 |
EP1752836B1 EP1752836B1 (en) | 2008-03-19 |
Family
ID=35455986
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20050017603 Expired - Fee Related EP1752836B1 (en) | 2005-08-12 | 2005-08-12 | Toner fusing device with a supply of fusing oil |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1752836B1 (en) |
DE (1) | DE602005005472T2 (en) |
Citations (3)
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 |
DE4231260A1 (en) | 1992-09-18 | 1994-03-24 | Heidelberger Druckmasch Ag | Drive for ink rubbers in the inking unit of rotary printing presses |
EP0864941A1 (en) | 1997-03-14 | 1998-09-16 | Agfa-Gevaert N.V. | System for application of fuser oil to a fusing unit |
-
2005
- 2005-08-12 DE DE200560005472 patent/DE602005005472T2/en active Active
- 2005-08-12 EP EP20050017603 patent/EP1752836B1/en not_active Expired - Fee Related
Patent Citations (3)
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 |
DE4231260A1 (en) | 1992-09-18 | 1994-03-24 | Heidelberger Druckmasch Ag | Drive for ink rubbers in the inking unit of rotary printing presses |
EP0864941A1 (en) | 1997-03-14 | 1998-09-16 | Agfa-Gevaert N.V. | System for application of fuser oil to a fusing unit |
Also Published As
Publication number | Publication date |
---|---|
DE602005005472T2 (en) | 2009-04-16 |
DE602005005472D1 (en) | 2008-04-30 |
EP1752836B1 (en) | 2008-03-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4237496B2 (en) | Ink system for printing press | |
CN100358717C (en) | Press | |
JP6108738B2 (en) | Keyless ink applicator | |
US20130327237A1 (en) | Systems and methods for implementing digital offset lithographic printing techniques | |
JP2017532223A5 (en) | ||
KR20110014110A (en) | Beveled edge doctor blade for drum maintenance | |
EP2303578B1 (en) | Printing module for use in an offset printing apparatus and offset printing apparatus provided with such a printing module | |
JP7130530B2 (en) | Ink separation multi-roll cleaning machine for variable data lithographic printing system | |
CN110171198A (en) | Pattern-free anilox roll inking system and method | |
JP6095910B2 (en) | Inking method and inking apparatus | |
KR101673225B1 (en) | A printing Apparatus using roll-type pad printing method of using the same | |
EP1752836B1 (en) | Toner fusing device with a supply of fusing oil | |
DE102011083456A1 (en) | Method and device for cleaning an external heating roller | |
CN108136799A (en) | Band coating unit and printing equipment | |
EP3281790A1 (en) | Anilox patterns and doctor blades for metering high viscosity pigmented inks | |
JP2007140377A (en) | Lubricant applicator and image forming apparatus | |
US10124576B2 (en) | Contamination-proof imaging member cleaning device and method | |
JP6963885B2 (en) | How to clean the blanket torso | |
KR20150079107A (en) | Roller box and Bookbinding device comprising the same | |
JP2014514980A (en) | Apparatus, printer, and method for removing material from a printer surface | |
JP2005231075A (en) | Ink feeding apparatus and flexographic printing machine | |
JPS6289979A (en) | Heat fixing device | |
JP4681340B2 (en) | Fixing device | |
JP4982121B2 (en) | Blanket cleaning liquid removal method for sheet-fed printing press | |
RU40243U1 (en) | DEVICE FOR MARKING PLASTIC PRODUCTS |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20060517 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA HR MK YU |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
AKX | Designation fees paid |
Designated state(s): DE NL |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE NL |
|
REF | Corresponds to: |
Ref document number: 602005005472 Country of ref document: DE Date of ref document: 20080430 Kind code of ref document: P |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20081222 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20110831 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20110812 Year of fee payment: 7 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: V1 Effective date: 20130301 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130301 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130301 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 602005005472 Country of ref document: DE Effective date: 20130301 |