EP0992864A2 - Farbauftragsfixierung - Google Patents
Farbauftragsfixierung Download PDFInfo
- Publication number
- EP0992864A2 EP0992864A2 EP99117814A EP99117814A EP0992864A2 EP 0992864 A2 EP0992864 A2 EP 0992864A2 EP 99117814 A EP99117814 A EP 99117814A EP 99117814 A EP99117814 A EP 99117814A EP 0992864 A2 EP0992864 A2 EP 0992864A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- radiation
- carrier
- infrared
- application
- infrared radiation
- 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
- 238000010438 heat treatment Methods 0.000 claims abstract description 33
- 230000003595 spectral effect Effects 0.000 claims abstract description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000007648 laser printing Methods 0.000 claims abstract description 5
- 230000005855 radiation Effects 0.000 claims description 150
- 239000003973 paint Substances 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 23
- 238000010521 absorption reaction Methods 0.000 claims description 22
- 239000000843 powder Substances 0.000 claims description 19
- 229910052736 halogen Inorganic materials 0.000 claims description 15
- 150000002367 halogens Chemical class 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 8
- 239000000969 carrier Substances 0.000 claims description 5
- 239000000112 cooling gas Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 3
- 239000012141 concentrate Substances 0.000 abstract 1
- 238000010792 warming Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 239000012876 carrier material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 210000002023 somite Anatomy 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- G03G15/2007—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using radiant heat, e.g. infrared lamps, microwave heaters
Definitions
- the invention relates to a method and an apparatus for Fixation of a color application on a sheet-like and / or endless carrier, especially of toner powder on copy paper and / or laser printing paper, the ink application being heated, to achieve a permanent connection with the wearer.
- Endless is understood to mean individual sections of the carrier in contrast to individual sheets with no space between them Sections are related. The sections for example, separated from each other on pre-perforated lines become.
- the invention further relates to the use of a By means of fixing the color application. When fixing in particular, the toner is also cross-linked.
- the Carrier can be made not only from conventional paper, but also made of special paper with resin components, foil and / or anything other carrier material.
- toner powder black or different colored color particles
- electrophotographic Applying methods to copy paper so that the outline and possibly the color of the toner powder Color order correspond to an original image.
- the toner powder immediately after it is applied to the copy paper by electrostatic forces, adhesion and / or by its Weight force at the desired location on the copy paper held.
- the toner powder is fixed by the Copy paper with the toner powder application through the space a pair of fuser rollers is promoted. At least one of the Both fuser rollers are actively heated, that is, by one Heating warmed to a temperature and held.
- the temperature of the roller surface is sufficient for the toner powder to melt and a firm connection of the toner powder with the To effect copy paper.
- the distance between the two fixing rollers is therefore set so that the Surfaces of the fixing rollers, the copy paper or the toner powder contact under a contact pressure.
- the contact pressure can contribute to fixation in addition to the warming by the melted toner powder is pressed into the copy paper surface becomes. This creates a toothing of the toner surfaces with the copy paper surface.
- the actively heated contact device by heat radiation and / or by heat conduction and / or by convection heat loses, care must be taken that the device for Apply the paint application and the one not yet applied Paint application can not be heated. Otherwise the material would of the color application before application to the sheet-like carrier subjected to a heat treatment that the Application in the desired manner prevented or difficult.
- the operating temperature of the contact device is also through limited their type and construction, with the result that the Working speed or clock rate is limited. Another The reason for a limit of the operating temperature is that the Paper at about the same temperature or even higher Temperature as the toner heats up and that the paper Damage exceeded a certain maximum temperature or is destroyed.
- the object of the present invention is a method and a device for fixing a color application on a leaf-like and / or endless carriers of the aforementioned Specify the type in whose execution or operation one for the Fixing unnecessary heating of device parts and / or the sheet-like carrier can be avoided.
- Another The object of the invention is to provide a means whose Use allows heating of the paint application, whereby a heating of not required for fixation Parts of the device and / or the carrier can be avoided.
- An essential idea of the invention is that the Color application is irradiated with infrared radiation, so that the Color application by absorption of at least part of the infrared radiation is heated.
- a radiation source for generating infrared radiation to provide and to provide an irradiation area, in which the carrier can be introduced to the infrared radiation to be exposed so that the paint application is heated.
- An advantage of the invention is that infrared radiation is so adjustable and / or controllable that a targeted Warming only for fixing the paint application on the Carrier required matter is effected.
- a targeted warming does not rule out, however, that areas of the Carriers that do not apply paint are desirably heated be, for example, following the fixation Prepare process steps or to dry the carrier. Depending on the type and material of the paint application takes place through the heating also takes place a networking of the paint application.
- the infrared radiation or its essential, radiation components causing heating in the near Infrared that spectral range is under near infrared Electromagnetic radiation understood between the visible wavelength range and about 1.4 micron wavelength lies. In particular, 80% of the radiation energy is in the Wavelength range from 0.8 to 1.8 ⁇ m. Particularly preferred is that the infrared radiation or its essential, the Radiation components causing heating, in the wavelength range between the visible range and 1.0 micron wavelength lie.
- the emission temperature of 2500 K. or higher, in particular of 2900 K or higher can higher radiation flux density of those absorbed by the paint application Infrared radiation can be achieved as the emitting Surface of the radiation source Radiation with greater radiance emitted.
- the spectral continues to shift Maximum of the emitted radiance according to the Vienna displacement law with increasing surface temperature shorter wavelengths and is expressed as a percentage distribution of the emitted radiation energy sharper, that means a certain percentage of the radiant energy is in an increasingly narrow spectral range around the wavelength spectral radiance emitted around.
- the Color application and the carrier better in the sense of a targeted Take advantage of warming. Therefore, in a training of the process according to the invention of the paint application and the carrier selected such that their absorption properties for spectrally differentiate the absorption of infrared radiation.
- the near infrared carrier is preferably low Degree of absorption, for example an absorption level of 0.1 to 0.2, and the color application in the near infrared has one Degree of absorption, for example an absorption level of 0.7 to 0.9.
- the radiant energy that is on the carrier and the is then applied mainly absorbed by the paint application. In this way there is a targeted heating of the paint application.
- the infrared radiation is preferably applied before it strikes the paint application spectrally filtered, and the filtering so on the absorption properties of the carrier and the Color order matched that the heating of the carrier is negligible is small.
- longer-wave filters are used Radiation components of the infrared radiation filtered out to the To minimize heating of the carrier.
- The has preferably device according to the invention a spectral filter for filtering out of radiation components of the radiation source, where the spectral filter between the radiation source and the Irradiation area is arranged.
- the spectral filter is a plate-like, by absorption certain spectral radiation components of active filters, in particular a quartz glass pane.
- the heating of the paint application using infrared radiation in a short time, especially within fractions of a second or a few seconds.
- unwanted warming can occur of the wearer can be effectively avoided, including the flat Shape of the carrier is helpful.
- the carrier is only heated directly at the interfaces the carrier surface and the paint application instead. A such localized warming may be desirable to get a firm connection with the paint application.
- the carrier and the paint application non-absorbed, reflected radiation components of the Infrared radiation in the direction of the wearer or the color application reflected back. In this way, the radiation energy not yet absorbed and reflected back at least partially absorbed by the paint application.
- Another option from a radiation source emitted infrared radiation effectively for heating the To use paint job is that of the radiation source not in the direction of the carrier or the color application emitted infrared radiation in the direction of the carrier or Color order is reflected.
- This is on the device side preferably a primary reflector for reflecting the generated ones Infrared radiation and for concentrating infrared radiation provided in the radiation area in which the carrier can be introduced.
- a secondary reflector for reflecting back radiation components of the Infrared radiation from the carrier and the paint application is not absorbed and reflected towards the secondary reflector are provided in the direction of the carrier.
- this has a back reflector, which from the perspective of the radiation source is arranged behind the radiation area.
- the back reflector is used to reflect radiation from the Radiation source is emitted towards the carrier.
- the reflector or reflectors are advantageously actively cooled.
- the reflector or the reflectors have a reflector body with one therein arranged cavity to preferably liquid cooling of the respective reflector from the inside of the To allow reflector surface.
- the cooling of the radiation emitted by the reflectors is minimized and thus good Controllability of the irradiation of the sheet-like carrier or guaranteed of his color application. Chilled continue to work Reflectors as protective shields against undesired heating of device parts involved in the process of heating should not be heated.
- the cooling especially the Liquid and / or gas cooling is expediently not only used with reflectors, but generally with one Part or more parts of the device that measure the intensity, Direction and / or wavelength of that from the radiation source emitted infrared radiation.
- These are in particular also spectral filters and / or radiation transmissive Envelopes of a radiation source, which inevitably one Warming by absorbing part of it subject to transmitted radiation.
- the infrared radiation is preferably spectrally different Absorption properties of the respective color partial order Voted. So in particular already fixed parts of the paint application warmed less than before parts that are not fixed, or in the best case will not be warmed more.
- the adaptation of infrared radiation to the Absorption properties are achieved in particular through filtering and / or adaptation of the emission temperature of a heat radiator.
- the use according to the invention is used to heat the paint application an infrared lamp proposed.
- the Infrared lamp is a halogen lamp.
- the infrared lamp is a tube emitter with a line-like in a radiolucent Tube, preferably in a quartz glass tube Filament is formed.
- the infrared lamp is used a plate-like spectral determined by absorption Radiation components acting spectral filter, especially with a quartz glass pane combined, the spectral filter between the radiation source, d. i.e., the incandescent body, and the Irradiation area is arranged in which the sheet-like Carrier is arranged.
- the spectral filter serves Delimitation of the flow space from the space in which the Irradiation area is located.
- any radiation-permeable covering of the Radiation source and / or one or more possibly present Cooled reflectors in the area of the radiation source is also preferred.
- the device shown in FIG. 1 has two halogen lamps 1 on, each having a filament 2 made of tungsten wire.
- the Filaments 2 are each one along the center line Quartz glass tube 8 extending perpendicular to the image direction.
- a primary reflector 4 With the halogen lamps 1 is a primary reflector 4 combined, with a constant cross-sectional profile extends parallel to the quartz glass tube 8.
- Halogen lamp 1 When switched on Halogen lamp 1 reflects the primary reflector 4 from the halogen lamp 1 not in the direction of an irradiation area emitted infrared radiation in the radiation area.
- FIG. 1 there is a Sheet of copy paper 6 in the irradiation area.
- the copy paper 6 was previously coming from the right into the radiation area promoted.
- the device or one with the Device combined copier an applicator roller 10 and an application counter roller 11.
- the axes of rotation of the application roller 10 and the application counter roller 11 are parallel aligned and positioned so that at counter-rotating movement of the rollers from top right in Fig. 1 fed copy paper (feed direction is with Arrow indicated) promoted by the pair of rollers to the bottom left becomes.
- a guide element 12 ensures that the copy paper swings in a horizontal conveying direction and thus in the Irradiation area occurs.
- the application roller 10 is used to apply toner powder Copy paper 6 through the space between the Application roller 10 and the application counter roller 11 conveyed through becomes.
- the toner powder is applied by a device, not shown the application roller 10 is applied, in accordance with the Lettering or the image of the original from which a copy is made shall be.
- the application roller 10 rolls off, the toner powder in the area of the gap to the application counter roller 11 applied to the copy paper 6. Until entry into the Irradiation area, the toner powder adheres to the copy paper 6 due to electrostatic forces.
- the copy paper comes 6 on its underside with the surface of a conveyor belt 13 in contact and is circulating through the endless Movement of the conveyor belt 13 through the irradiation area conveyed through until the front end of the copy paper 6 Conveyor roller pair 15, 16 reached.
- the copy paper 6 supported by a further guide element 14.
- the copy paper 6 shown in Fig. 1 is an example three places on its top toner 7, which as described applied to the copy paper 6 by the application roller 10 has been. Both the copy paper itself and the toner 7 are shown exaggeratedly thick.
- the halogen lamps 1 are switched on. Due to the low thermal inertia of the filaments 2, the operating temperature of the filaments 2 is reached within fractions of a second after switching on. If the copy paper 6 enters the radiation area with its front edge, the full radiation power of the halogen lamps 1 is available at least approximately. Accordingly, the radiation spectrum emitted by the halogen lamps 1 changes only slightly from this point in time until the halogen lamps 1 are switched off. In particular, the circuit flux density of the radiation impinging on the copy paper 6 is more than 300 kW / m 2 . In order to maintain the constant operating temperature of approximately 2900 K on the surface of the filaments 2, the electric glow current is regulated by the filaments 2.
- That of the halogen lamps 1 at a filament surface temperature radiation emitted by 2900 K essentially exists from short-wave infrared radiation. Longer-wave components of the emitted radiation will be at least partially absorbed by the quartz glass tubes 8.
- An additional, in 1 spectral filter (not shown) can be provided to certain radiation components, which after the passage of the Radiation through the quartz glass tubes 8 are still present, filter out. These radiation components exist in particular in long-wave infrared radiation components and in radiation components, at the wavelength of the copy paper 6, printing or already fixed toner of a different color have a high degree of absorption.
- the radiation from the Infrared lamps 1 emitted in different directions.
- On Part of the radiation is, for example, directly in the direction of Toner 7 is emitted on the copy paper 6 and from the toner 7 absorbed.
- Another part of the radiation is directed towards the Primary reflector 4 emits and from this in the direction of Toner 7 reflects.
- Another part of the radiation is reached directly, or after reflection by the primary reflector 4, places the copy paper 6, which do not carry a color application. Because of the low degree of absorption of the copy paper 6 for the emitted and possibly filtered radiation these radiation parts essentially from the copy paper reflected.
- An essential part of the reflected radiation strikes the primary reflector 4 or a secondary reflector 5 on the underside of a reflector body 3, in the trough-shaped recesses arranged the halogen lamps 1 are, the surfaces of the trough-shaped recesses with a reflective layer are coated or preferably consist of polished aluminum, so that the Primary reflector 4 is formed. From the primary reflector 4 or a significant part of the secondary reflector 5 incident infrared radiation back towards the copy paper 6 reflected back. There the radiation either hits on the toner 7 or on places of the copy paper 6 that are not Wear toner. Accordingly, part of the incident radiation continues the chain of reflection. As a result the majority of the halogen lamps 1 emitted radiation absorbed by the toner 7 and in heat implemented.
- the radiation area laterally, that is, in Direction of the application roller 10, in the direction of the conveyor rollers 15, 16 or in directions transverse to the image surface preferably further to the side of the radiation area Reflectors provided that the radiation in the radiation area throw back.
- the Distance of the reflector body 3 to the top of the conveyor belt 13, on which the copy paper 6 is located clearly be less than shown in Fig. 1. That way too can cause radiation losses due to leakage from the side Irradiation area can be minimized.
- Fig. 2 shows a reflector arrangement of such a device. Except for the reflector body already described with reference to FIG. 1 3 with the primary reflector 4 and the secondary reflector 5 the reflector arrangement has a total of 4 side reflector bodies 23, of which only due to the sectional view two are shown. The other side reflector bodies, not shown are located above and below the 2 at the level of the side reflector body shown 23. The side reflector bodies point to their Irradiation room side secondary reflectors 21, the preferably have a surface of polished aluminum. Furthermore, there is a back reflector body in the reflector arrangement 24 is provided with a back reflector 22. The back reflector 22 is shown on the back of the dashed lines leaf-like carrier directed.
- the reflector arrangement is that of the reflectors 4, 5, 21, 22 bordered irradiation room almost completely closed. Therefore, only slight radiation losses occur Radiation emerges from the radiation room. All in all is the proportion of radiation that is indirect, i.e. that is, at least a reflection, starting from the radiation source on the leaf-like carrier or its color application, larger than 60% of the radiation emitted.
- the reflector body 3 has a cavity, not shown on.
- liquid preferably water
- the reflector body 3 an input port 25 for introducing the liquid and an outlet port 26 for discharging the liquid.
- the direction of flow is indicated by arrows in FIG. 2.
- the coolant takes on the inside of the reflectors 4, 5 heat on, inevitably through absorption part of the radiation energy absorbed by the reflectors 4, 5 arises.
- the side reflector body 23 and / or the back reflector body 24 can be cooled in a similar manner.
- the conveyor roller pair 15, 16 met in addition to Funding function two more functions. For toners or Color orders, which are not only caused by heating but also by printing are fixed, the conveyor roller pair 15, 16 exercises the required Print on the warmed toner or paper out. Furthermore, the conveyor roller pair 15, 16 cools the toner 7 and the copy paper 6. Subsequent components of the copier therefore do not have to be temperature resistant.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fixing For Electrophotography (AREA)
- Resistance Heating (AREA)
Abstract
Description
- Fig.1
- ein Ausführungsbeispiel für eine erfindungsgemäße Vorrichtung als Bestandteil eines Kopierers zum Kopieren von auf Papier gedruckten Texten, Bildern und dergleichen.
- Fig. 2
- einen Längsschnitt durch eine Reflektoranordnung eines zweiten Ausführungsbeispiels.
- aufgrund der Erwärmung des Farbauftrages zumindest im wesentlichen durch Strahlungserwärmung kann gezielt die zu erwärmende Materie, insbesondere der Toner, erwärmt werden. Andere Materie, beispielsweise temperaturempfindliche Vorrichtungsbauteile, werden nicht zwangsläufig erwärmt.
- durch Verwendung von Glühkörpern geringer thermischer Trägheit als Infrarot-Strahlungsemitter können die Einschaltzeiten verkürzt werden und kann Energie gespart werden.
- durch gezielte Erwärmung möglichst nur des Farbauftrages kann ebenfalls Energie eingespart werden. Bei gleicher Heizleistung wird im Vergleich zu einer Kontakterwärmung eine schnellere Erwärmung bewirkt. Taktzeiten bei der sukzessiven Fixierung von Farbaufträgen auf einer Vielzahl von blattartigen Trägern (wie beim Kopieren eines Stapels von Dokumenten oder beim Laserdruck) können somit verkürzt werden.
- bei Farbaufträgen mit unterschiedlichen Farben können Teile des Farbauftrages selektiv erwärmt und fixiert werden.
- Vorrichtungsteile, die die Intensität, Richtung und/oder Wellenlänge der von der Strahlungsquelle emittierten Infrarotstrahlung beeinflussen, etwa Reflektoren oder Spektralfilter können aktiv gekühlt werden. Bei einer Kühlung durch Gas- bzw. Luftstrom ist es vorteilhaft, eine für die Strahlung durchlässige Platte oder einen plattenartigen Gegenstand zwischen der Strahlungsquelle und dem Bestrahlungsbereich anzuordnen, um den Bereich der Strahlungsquelle zu kühlen, jedoch die Kühlgase von dem Bestrahlungsbereich fernzuhalten. Weiterhin kann der Kühlgasstrom durch geeignete Positionierung der strahlungsdurchlässigen Platte eine effektive Anströmung des Bereichs der Strahlungsquelle, insbesondere der Strahlungsquelle bzw. deren Umhüllung und/oder der dort angeordneten Reflektoren, bewirken. Die Platte gewährleistet eine ausreichende Strömungsgeschwindigkeit in dem zu kühlenden Bereich und verhindert, daß der Kühlgasstrom divergiert.
- 1
- Halogenlampe
- 2
- Glühfaden
- 3
- Reflektorkörper
- 4
- Primärreflektor
- 5
- Sekundärreflektor
- 6
- Kopierpapier
- 7
- Toner
- 8
- Quarzglasröhre
- 10
- Auftragswalze
- 11
- Auftragsgegenwalze
- 12
- Führungselement
- 13
- Förderband
- 14
- Führungselement
- 15
- Förderwalze
- 16
- Förderwalze
- 21
- Sekundärreflektor
- 22
- Rückreflektor
- 23
- Seitenreflektorkörper
- 24
- Rückreflektorkörper
- 25
- Eingangsanschluß
- 26
- Ausgangsanschluß
Claims (21)
- Verfahren zur Fixierung eines Farbauftrages (7) auf einem blattartigen Träger (6), insbesondere von Tonerpulver auf Kopierpapier, wobei der Farbauftrag (7) erwärmt wird, um eine dauerhafte Verbindung mit dem Träger (6) zu erzielen,
dadurch gekennzeichnet,
daß der Farbauftrag (7) mit Infrarotstrahlung bestrahlt wird, so daß der Farbauftrag (7) durch Absorption mindestens eines Teils der Infrarotstrahlung erwärmt wird. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet,
daß die Infrarotstrahlung oder ihre wesentlichen, die Erwärmung bewirkenden Strahlungsanteile im nahen Infrarot liegen. - Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß die Infrarotstrahlung von einer Strahlungsquelle (1) emittiert wird, die eine Emissionstemperatur von 2500 K oder höher hat, insbesondere von 2900 K oder höher. - Verfahren nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
daß der Farbauftrag (7) und/oder der Träger (6) derart ausgewählt werden, daß sich ihre Absorptionseigenschaften für die Absorption von Infrarotstrahlung spektral unterscheiden, und daß durch Einstellung der spektralen Verteilung der eingestrahlten Infrarotstrahlung diese überwiegend von dem Farbauftrag (7) absorbiert wird. - Verfahren nach Anspruch 4,
dadurch gekennzeichnet,
daß die Infrarotstrahlung vor dem Auftreffen auf dem Farbauftrag (7) spektral gefiltert wird und daß die Filterung derart auf die Absorptionseigenschaften des Trägers (6) und des Farbauftrages (7) abgestimmt wird, daß die Erwärmung des Trägers (6) relativ zu der des Farbauftrags vernachlässigbar klein ist. - Verfahren nach Anspruch 5,
dadurch gekennzeichnet,
daß bei der Filterung längerwellige Strahlungsanteile der Infrarotstrahlung herausgefiltert werden, um die Erwärmung des Trägers (6) zu minimieren. - Verfahren nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet,
daß von dem Träger (6) und dem Farbauftrag (7) nicht absorbierte, reflektierte Strahlungsanteile der Infrarotstrahlung in Richtung des Trägers (6) bzw. des Farbauftrages (7) zurückreflektiert werden. - Verfahren nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet,
daß eine Mehrzahl der blattartigen Träger mit Farbaufträgen nacheinander durch einen Bestrahlungsbereich gefördert wird, in dem die Infrarotbestrahlung stattfindet, und daß die Infrarotbestrahlung abhängig von der Förderung, insbesondere abhängig von dem Durchqueren eines Trägers durch den Bestrahlungsbereich, gestartet und gestoppt wird. - Verfahren nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet,
daß ein Teil oder mehrere Teile, die die Intensität, Richtung und/oder Wellenlänge der von einer Strahlungsquelle (1) emittierten, in den Bestrahlungsbereich einfallenden Infrarotstrahlung beeinflussen, flüssigkeits- und/oder gasgekühlt werden. - Verfahren nach einem der Ansprüche 1 bis 9
dadurch gekennzeichnet,
daß der Farbauftrag durch die Infrarotbestrahlung vernetzt wird. - Vorrichtung zur Fixierung eines Farbauftrages (7) auf einem blattartigen und/oder endlosen
Träger (6), insbesondere von Tonerpulver auf Kopierpapier und/oder Laserdruckpapier, wobei der Farbauftrag (7) erwärmt wird, um eine dauerhafte Verbindung mit dem Träger (6) zu erzielen,
gekennzeichnet durcheine Strahlungsquelle (1) zum Erzeugen von Infrarotstrahlung undeinen Bestrahlungsbereich, in den der Träger (6) einbringbar ist, um dort der Infrarotstrahlung ausgesetzt zu werden, so daß der Farbauftrag erwärmt und fixiert wird. - Vorrichtung nach Anspruch 11,
gekennzeichnet durch,
einen Primärreflektor (4) zum Reflektieren der erzeugten Infrarotstrahlung und zum Konzentrieren der Infrarotstrahlung in dem Bestrahlungsbereich. - Vorrichtung nach Anspruch 11 oder 12,
gekennzeichnet durch
einen Sekundärreflektor (5) zum Zurückreflektieren von Strahlungsanteilen der Infrarotstrahlung, die von dem Träger (6) und dem Farbauftrag (7) nicht absorbiert und in Richtung des Sekundärreflektors (5) reflektiert werden, in Richtung des Trägers (6). - Vorrichtung nach Anspruch 12 oder 13,
dadurch gekennzeichnet,
daß der Reflektor (4, 5, 21, 22) bzw. die Reflektoren einen einen Hohlraum aufweisenden Reflektorkörper (3, 23, 24) haben zur Flüssigkeitskühlung des jeweiligen Reflektors (4, 5, 21, 22) von einer Innenseite der Reflektorfläche. - Vorrichtung nach einem der Ansprüche 11 bis 14,
gekennzeichnet durch
einen Spektralfilter zum Herausfiltern von Strahlungsanteilen der Strahlungsquelle (1), der zwischen der Strahlungsquelle (1) und dem Bestrahlungsbereich angeordnet ist. - Vorrichtung nach Anspruch 15,
dadurch gekennzeichnet,
daß der Spektralfilter ein plattenartiger, durch Absorption bestimmter spektraler Strahlungsanteile wirkender Filter ist, insbesondere eine Quarzglasscheibe. - Vorrichtung nach einem der Ansprüche 11 bis 16,
dadurch gekennzeichnet,
daß eine Zwangskonvektionskühleinrichtung zum Kühlen eines strahlungsdurchlässigen Bestandteils der Vorrichtung mittels eines Kühlgases, insbesondere zum Kühlen des Spektralfilters und/oder zum Kühlen einer einen Glühkörper der Strahlungsquelle (1) umgebenden Umhüllung vorgesehen ist. - Vorrichtung nach einem der Ansprüche 11 bis 17,
dadurch gekennzeichnet,
daß aus Sicht der Strahlungsquelle (1) hinter dem Bestrahlungsbereich ein Rückreflektor (22) zum Reflektieren von Strahlungsanteilen vorgesehen ist. - Verwendung einer Infrarotlampe zur Fixierung eines Farbauftrages (7) auf einem blattartigen und/oder endlosen Träger (6), insbesondere von Tonerpulver auf Kopierpapier und/oder Laserdruckpapier, wobei der Farbauftrag durch von der Infrarotlampe (1) erzeugte Infrarotstrahlung aufgrund von Strahlungsabsorption erwärmt wird und eine dauerhafte Verbindung mit dem Träger eingeht.
- Verwendung nach Anspruch 19,
wobei die Infrarotlampe (1) eine Halogenlampe ist und einen Glühkörper (2) zur Strahlungsemission aufweist, der bei Emissionstemperaturen von 2500 K oder höher, insbesondere bei Emissionstemperaturen von 2900 K oder höher, betreibbar ist. - Verwendung nach Anspruch 19 oder 20,
wobei die Infrarotlampe (1) als Röhrenstrahler mit einem sich linienartig in einer strahlungsdurchlässigen Röhre (8), insbesondere in einer Quarzglasröhre, erstreckenden Glühfaden (2) ausgebilet ist.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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DE19846669 | 1998-10-09 | ||
DE19846669 | 1998-10-09 | ||
DE19857044A DE19857044C2 (de) | 1998-10-09 | 1998-12-10 | Farbauftragsfixierung |
DE19857044 | 1998-12-10 |
Publications (3)
Publication Number | Publication Date |
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EP0992864A2 true EP0992864A2 (de) | 2000-04-12 |
EP0992864A3 EP0992864A3 (de) | 2001-08-16 |
EP0992864B1 EP0992864B1 (de) | 2005-06-29 |
Family
ID=26049426
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP19990117814 Expired - Lifetime EP0992864B1 (de) | 1998-10-09 | 1999-09-09 | Farbauftragsfixierung |
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EP (1) | EP0992864B1 (de) |
DE (1) | DE29823683U1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002012964A1 (de) * | 2000-08-09 | 2002-02-14 | Advanced Photonics Technologies Ag | Verfahren und vorrichtung zur thermischen fixierung von laserdrucken |
EP1217464A2 (de) * | 2000-12-22 | 2002-06-26 | NexPress Solutions LLC | Fixiervorrichtung zum Fixieren von Tonermaterial |
CN1317608C (zh) * | 2001-03-22 | 2007-05-23 | 肖特股份公司 | 对涂覆在载体上的一上色层进行加热和固定的方法和装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57165853A (en) * | 1981-04-04 | 1982-10-13 | Ricoh Co Ltd | Fixing method for electronic photographic offset printing plate |
EP0062998A1 (de) * | 1981-03-30 | 1982-10-20 | Xerox Corporation | Gerät zum Schmelzen mittels Strahlungsenergie |
JPH01183679A (ja) * | 1988-01-18 | 1989-07-21 | Nec Corp | 電子写真式印字装置の定着器 |
-
1998
- 1998-12-10 DE DE29823683U patent/DE29823683U1/de not_active Expired - Lifetime
-
1999
- 1999-09-09 EP EP19990117814 patent/EP0992864B1/de not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0062998A1 (de) * | 1981-03-30 | 1982-10-20 | Xerox Corporation | Gerät zum Schmelzen mittels Strahlungsenergie |
JPS57165853A (en) * | 1981-04-04 | 1982-10-13 | Ricoh Co Ltd | Fixing method for electronic photographic offset printing plate |
JPH01183679A (ja) * | 1988-01-18 | 1989-07-21 | Nec Corp | 電子写真式印字装置の定着器 |
Non-Patent Citations (4)
Title |
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PATENT ABSTRACTS OF JAPAN vol. 007, no. 006 (P-167), 11. Januar 1983 (1983-01-11) -& JP 57 165853 A (RICOH KK), 13. Oktober 1982 (1982-10-13) * |
PATENT ABSTRACTS OF JAPAN vol. 013, no. 467 (P-948), 23. Oktober 1989 (1989-10-23) & JP 01 183679 A (NEC CORP), 21. Juli 1989 (1989-07-21) * |
ROGER D. ARCHIBALD: "Laser Printer Fusing System" HEWLETT-PACKARD JOURNAL, Bd. 33, Nr. 6, Juni 1982 (1982-06), Seiten 24-26, XP002169751 Amstelveen,The Netherlands * |
STEPHEN DUNN, KEN RASCH: "ROTATING FUSER BASE, PASSIVE RADIANT BASE" XEROX DISCLOSURE JOURNAL, Bd. 5, Nr. 2, Seiten 167-168, XP002169752 Stamford, Conn.,USA * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002012964A1 (de) * | 2000-08-09 | 2002-02-14 | Advanced Photonics Technologies Ag | Verfahren und vorrichtung zur thermischen fixierung von laserdrucken |
EP1217464A2 (de) * | 2000-12-22 | 2002-06-26 | NexPress Solutions LLC | Fixiervorrichtung zum Fixieren von Tonermaterial |
EP1217464A3 (de) * | 2000-12-22 | 2006-03-22 | Eastman Kodak Company | Fixiervorrichtung zum Fixieren von Tonermaterial |
CN1317608C (zh) * | 2001-03-22 | 2007-05-23 | 肖特股份公司 | 对涂覆在载体上的一上色层进行加热和固定的方法和装置 |
Also Published As
Publication number | Publication date |
---|---|
DE29823683U1 (de) | 1999-09-30 |
EP0992864A3 (de) | 2001-08-16 |
EP0992864B1 (de) | 2005-06-29 |
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