EP1217463A2 - Digitale Druck- oder Kopiermaschine - Google Patents
Digitale Druck- oder Kopiermaschine Download PDFInfo
- Publication number
- EP1217463A2 EP1217463A2 EP01128009A EP01128009A EP1217463A2 EP 1217463 A2 EP1217463 A2 EP 1217463A2 EP 01128009 A EP01128009 A EP 01128009A EP 01128009 A EP01128009 A EP 01128009A EP 1217463 A2 EP1217463 A2 EP 1217463A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- substrate
- printing
- copying machine
- machine according
- heating device
- 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
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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
- B65H5/00—Feeding articles separated from piles; Feeding articles to machines
- B65H5/36—Article guides or smoothers, e.g. movable in operation
- B65H5/38—Article guides or smoothers, e.g. movable in operation immovable in operation
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2406/00—Means using fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2406/00—Means using fluid
- B65H2406/10—Means using fluid made only for exhausting gaseous medium
- B65H2406/11—Means using fluid made only for exhausting gaseous medium producing fluidised bed
Definitions
- the invention relates to a digital printing or copying machine for one-sided or double-sided printing of a substrate using at least a toner according to the preamble of claim 1.
- the contacting and non-contacting melting processes use, for example, toners whose glass transition temperature (T G ) is in a range from 45 ° C. to 75 ° C.
- the glass transition temperature at which the toner begins to soften, starting from the solid state can be influenced by the choice of raw materials and by the addition of certain additives to the toner.
- a fixing device for the toner having at least one heating device, both the toner and the substrate itself are heated.
- the surface temperature of the substrate must be in the range of the glass transition temperature of the toner or above.
- the toner already reaches or exceeds the glass transition temperature (T G ) in the area of the heating device.
- Printing and copying machines are known in which the substrate is double-sided is printed or coated, whereby for printing the front and Back either one and the same imaging and transmission device and heater or separate imaging and Transmission device and heating device can be used.
- the substrate is often with the help of a conveyor belt on which the substrate rests on the at least one imaging and transfer device and passed the associated heating device. Doing so first transfer a first toner image to and onto a first substrate side fixed. A second toner image is then applied to the second substrate side transferred and fixed. When the second toner image is melted there is therefore first substrate side with the already fixed first toner image thereon on the conveyor belt.
- the disadvantage here is that during melting of the second toner image, the first toner image can heat up so far that it becomes soft and tends to stick to the conveyor belt. This can be too cause several unwanted effects: sticking it can cause a substrate jam during the transfer of the substrate from the conveyor belt a subsequent part of the machine. Furthermore, the appearance of the Toner image in the areas where it sticks to the conveyor belt change. This leads to problems with the image quality, for example, that Toner image has an uneven gloss.
- a digital printing or copying machine is used to solve the task proposed, which has the features of claim 1. It includes at least one fixing device for fixing a to a substrate transferred toner image is used.
- the toner image can be single or multi-colored.
- in the Connection with the present invention also includes a "toner image” understood a coating having at least one toner layer.
- the substrate can be an arc or a continuous path for example made of paper or cardboard. To fix the liquid or Dry toner on the substrate, this is on a heater that part the fixing device is passed.
- the printing or Copier is characterized by a guide device for free floating displacement of the substrate in the effective range of the heating device out.
- “Floating” means that the substrate has no contact another surface, for example a conveyor belt, a support plate or the like. If the substrate is printed on both sides, it points on one side (underside) of a first toner image that is already on the substrate is fixed when one transferred to the other, second side of the substrate (upper side) second toner image is melted by means of the heating device. It can the first toner image is heated until it tends to stick / stick, when it comes into contact with a surface.
- the substrate during the melting process of the second toner image at least as long as it is suspended so that the first toner image is so far cooled down, that it no longer tends to stick to surfaces, one can Damage or deterioration in the quality of the first toner image be excluded. It can therefore have a consistent image quality and one Uniform gloss of the toner images on the front and back of the substrate can be guaranteed.
- the front of the substrate - depending on the view - both can form the top as well as the bottom, that is, the first toner image can be on the front or back of the substrate. The the same applies to the second toner image.
- the floating state of the substrate by at least one on the to be fixed Top having toner image and / or the bottom of the substrate acting Air cushion is accessible.
- Another function of the air cushion can be in it exist that substrate and possibly one already fixed on the substrate Cool toner image. For this purpose, it points to the generation of the air cushion air used has a correspondingly low temperature. It is also possible that the air cushion also preheats the substrate at the same time should. For this purpose, warm or hot air is applied to the substrate applied.
- Figure 1 shows a section of an embodiment of an example working according to the electrographic or electrophotographic process Printing or copying machine 1, namely a fixing device 3, which is used for fixing a toner image transferred to a substrate 5 is used. That to be fixed
- the toner image is here on the top 7 of the substrate 5, that is, opposite the fixing device 3.
- On the underside 9 of the substrate 5 can there is another toner image already fixed on the substrate 5.
- the transport path of the substrate 5 runs parallel an imaginary horizontal H.
- the transport direction 11 of the substrate 5 is with indicated by an arrow.
- the fixing device 3 has a heating device 13 for melting the Toner image on the substrate top 7, which in this embodiment the substrate 5 is charged with hot air.
- the one indicated by an arrow Air flow 15 strikes the substrate top side 7 substantially perpendicularly.
- the machine 1 further comprises a guiding device 17 for the substrate 5 serves to substrate 5 at least in the effective range of heating device 13 free to guide, that is, the guide device 17 prevents the substrate bottom 9 comes into contact with a surface while that on the toner image located on the substrate top 7 is melted.
- the leadership facility 17 here has a first blowing device 19, not shown, the a plurality of nozzles which can be directed against the substrate underside 9 and which can be acted upon of the substrate with air under pressure. The one from the nozzles emerging air jets 21 indicated by arrows hit at an angle not equal to 90 ° to the substrate underside 9.
- the orientation of the air jets 21 is chosen here so that they each have a directional component perpendicular to Substrate underside 9 and a directional component in or parallel to the transport direction 11 of the substrate 5.
- the air jets 21 cause that there is an air cushion between the substrate underside 9 and a wall 23 forms, which prevents the substrate bottom 9 in contact with the example comes from a perforated plate 23 formed by the nozzle wall.
- There the air jets 21 are also directed in the transport direction 11, contributes to Airflow serving to generate air cushion also make some contribution to shift the substrate 5 in the transport direction 11.
- the substrate side are matched to one another in such a way that the substrate 5 in the effective range of the heater 13 is in a state of suspension is located, so neither contact to the heater 13 nor below Transport plane arranged wall 23 has.
- a suitable control device controls the Location of the substrate 5 between the heater 13 and the wall 23 and the Substrate transport speed, in particular by the air flow 15 and the air flow generated by the first blowing device 19 accordingly established.
- the distance of the substrate from the heating device or Wall 23 is therefore adjustable.
- Such a control device can also based on the following embodiment, in which the One or more air flows are applied to the substrate.
- Figure 2 shows a section of a further embodiment of the Fixing device 3 and the guide device 17.
- the heating device 13 of the Fixing device 3 is formed here by a radiation device 24 by means of of which the substrate 5 can be exposed to electromagnetic radiation.
- the Guide device 17 comprises a first blowing device, not shown in detail 19, which is arranged below the transport path of the substrate.
- the first Blowing device 19 has a parallel to the transport path of the substrate aligned first base plate 25 in which a number of through openings 27 are introduced.
- the through openings 27 are on their transport route opposite side of the base plate 25 with a compressed air supply device, not shown connected so that over the acting as nozzles Through openings 27 each have an air jet 29 onto the substrate underside 9 is attachable, creating an air cushion that prevents that The substrate comes into contact with the first base plate 25.
- the guide device 17 shown in Figure 2 also has a second Blower device 31, which is used to generate an air cushion between the fixing substrate image having substrate top 7 and a second Base plate 33, which is part of the second blowing device 31, is used.
- the second Base plate 33 is at a distance above the transport path of substrate 5 to the first base plate 25 and arranged parallel to this.
- the substrate transport path thus runs here in the free space 35 between the Base plates 25, 33.
- the second base plate 33 also has nozzles serving through openings 37, which on the free space 35th opposite side with a compressed air supply device, not shown are connected, so that one over each of the through openings 37 Air jet 39 can be applied vertically to the substrate top 7.
- a protective plate 41 arranged parallel to second base plate 33 extends.
- the relatively thin protective plate 41 the can be formed by a film, for example, has no through openings on, so that when compressed air is applied to the intermediate space 43 between the second base plate 33 and the protective plate 41 as with an arrow 45 indicated - the compressed air through the through openings 37 for generation an air cushion between the second base plate 33 and the substrate top 7 arrives.
- the second base plate 33 and the protective plate 41 are made of a radiation-transparent Material produced and - as can be seen from Figure 2 - in the radiation path arranged between the radiation device 24 and the substrate 5.
- An advantageous embodiment provides that when switched on Radiator 47 the radiation device 24 UV to near infrared radiation in the direction of the substrate 5 emits.
- the protective plate 41 and the second base plate 33 leave up to 95% of that of the Radiation device 24 emitted radiation power, so that on the toner image located on the substrate 5 is melted in the desired manner. Should a malfunction occur, for example a substrate transport stop, see above the radiation device 24 is switched off, which is preferably automatic he follows.
- the radiation device 24 then does not send any UV to near infrared radiation more, but only thermal radiation of the parts that are involved switched on radiation device 24 have heated by this.
- the Radiation device 24 then only emits in the infrared spectral range.
- the wavelength changes the emitted radiation with the existing temperature of the switched off radiator 47, it is namely above about 3.4 microns or more.
- This radiation spectrum is, however, from the protective plate 41 and second base plate 33 absorbed almost completely, so that when switched off Radiation device 24 ultimately only in about 10% of the initial energy Residual heat radiation arrive at the substrate 5.
- Most of the residual heat radiation is preferably from the protective plate 41, that of the radiation device 24 opposite, absorbed, so that this is a significantly higher Has temperature than the second base plate 33, that of the substrate transport plane opposite. In any case, the heating of the second base plate 33 is only so high that there should be a contact between the substrate 5 and the second Base plate 33 come, the substrate 5 is not ignited.
- the second base plate 33 thus also serves as a stop for the substrate 5, so that it does not can come into contact with the radiation device 24. While the Protection plate 41 so only as a filter for a certain range of serves electromagnetic radiation, the second base plate 33 has a plurality Functions on, namely stop for the substrate 5, filter for residual heat radiation and receiving device for the nozzles of the second blowing device 31st
- the second base plate 33 is preferably by means of the compressed air flow within the space 43, which occurs when the blowing device 31 is activated sets cooled so far that they do not have a critical temperature at which a contact between the second base plate 33 and the substrate 5 this would ignite, is heated.
- FIG 3 shows a further embodiment of the fixing device 3, namely one Heating device 13, which comprises a microwave resonator 49.
- a first pressure chamber 53 is integrated extends across the width of the substrate transport path and to the substrate transport path has an opening 55, which is covered with a perforated plate 57.
- the perforated plate 57 has a number of through openings and / or slots, those when the first pressure chamber 53 is pressurized as nozzles act, which will be discussed in more detail.
- the perforated plate 57 is made of one Material with low microwave absorption, because of the resulting low heating.
- the material is chosen so that under Taking into account the cooling air flow a temperature of the perforated plate of Not 50 ° C to 100 ° C (depending on the melting temperature of the toner used) is exceeded. This can cause toner dust to stick to the Perforated plate and possibly closing holes be avoided.
- materials for the perforated plate are fluoropolymers, such as B. PVDF (polyvinylidene fluoride) or PTFE (polytetrafluoroethylene) or technical ceramic materials, such as. B. silicate ceramics, oxide ceramics (e.g. Aluminum oxide) or non-oxide ceramic.
- Microwave resonator 49 has a second pressure chamber 59 integrated into it
- Substrate transport path has an opening 61 which by means of a perforated plate 63 is covered, which is preferably made of the same material as the perforated plate 57 is made.
- This has a number of through openings and / or slots which, when the second pressure chamber 59 is pressurized with a preferably gaseous medium act as nozzles.
- the preferably with First and second pressure chambers 53, 59 can be acted upon by compressed air either with a common compressed air supply source or with one each separate compressed air supply source connected.
- the first pressure chamber 53 and the perforated plate 57 Compressed air is applied to the substrate 5, so that it is almost weightless the lower part of the microwave resonator 49 floats.
- the strength of the The air cushion is adjusted so that the distance between the substrate 5 and the upper perforated plate 63 is at least large enough to jam a substrate is avoided within the slot-shaped opening 51.
- a second one in the upper part of the microwave resonator 49 Pressure chamber 59 is provided, with the help of a second air cushion between the Substrate top 9 and the upper part of the microwave resonator 49 can be generated is. This allows contact between the substrate 5 and the perforated plate 63 be practically excluded.
- An exemplary embodiment provides that the second pressure chamber 59 is waived and that the free-floating state of the substrate 5 within the heating device 13 exclusively by means of the first pressure chamber 52 air cushion generated on the underside 9 of the substrate 5 is reached.
- the compressed air applied to the substrate 5 by means of the pressure chambers 53, 59 can be preheated, which increases the effectiveness of the heater 13. Zones can be seen in the transport direction 11 of the substrate 5 different temperature can be realized.
- the inlet area of the substrate 5 into the opening 51 very hot air by means of the pressure chambers 53, 59 applied to the substrate 5, which is the melting of the Toner image supports, while in the outlet area of the opening 51 cooler Compressed air is applied to the substrate 5 to cool it.
- the Pressure chambers 53, 59 - seen in substrate transport direction 11 - in each case divided at least two separate pressure chambers, as with dashed line 65 indicated.
- the transport path of the substrate 5 runs parallel to the horizontal H.
- the transport route of the substrate 5 in the region of the microwave resonator 49 in the vertical direction preferably - following gravity - from top to bottom.
- the microwave resonator 49 is constructed similarly or identically to that in FIG. 3 shown, thus has first and second pressure chambers 53, 59, with their help a contact between the substrate 5 and the walls of the opening 51 in the Microwave resonator 49 can be prevented.
- FIG 4 shows another embodiment of the guide device 17, which here has a holding device 67, not shown, by means of which the substrate 5 is detectable at its leading edge area.
- “Capture” means that the holding device 67 holds the substrate 5 non-positively and / or positively.
- the Holding device 67 is here at the free end of at least one about an axis 69 pivotable pivot lever 71 attached.
- the pivot lever 71 is -in Seen substrate transport direction - arranged next to the microwave resonator.
- the guide device 17 shown in FIG. 4 is a heating device 13 Assigned fixing device 3, which is constructed essentially identically to that described with reference to Figure 3.
- One difference is that the Microwave resonator 49, the recesses for the formation of the first and second pressure chambers 53, 59, but not with one Compressed air supply device are connected. In the embodiment So there is no / no air cushion in the slot-shaped opening 51 of the Microwave resonator 49 generated.
- Figure 5 shows a longitudinal section through an embodiment of the holding device 67, which comprises a strip 77 which, when installed, extends transversely to the Substrate transport direction 11 extends.
- the strip 77 has a slit-shaped Opening 79 on, via a connecting channel 81 with a vacuum device connected is.
- the detection of the substrate 5 takes place here in such a way that the opening 79 is subjected to negative pressure, as a result of which the substrate 5, as in FIG Figure 5 shown - sucked onto the bar 77 and held there.
- the height h of the bar 77 is smaller than the height of the slot-shaped opening 51 in Microwave resonator 49, so that the bar 77 contactlessly through the opening 51 can be passed.
- the holding device 67 according to a desired trajectory
- an articulated gear instead of the at least one pivot lever 71 an articulated gear, a crank arm or a wheel mechanism or the like can be used. It is important that the trajectory of the Holding device 67 is selected so that the substrate 5 during transport through the Microwave resonator 49 has no contact with it.
- the embodiment of the guide device described with reference to Figures 4 and 5 17 can also be used in connection with a heating device for Melt the toner image on the substrate 5 with electromagnetic Radiation, hot air or the like.
- the holding device 67 can also have a gripper device, by means of which the substrate 5 can be clamped.
- the strip 77 can also have a plurality of suction openings formed by bores.
- FIG. 6 shows a further embodiment of the machine 1, namely one Cutout in the area of their fixing device 3.
- the same parts are the same Provide reference numerals, so that in this respect to the description of the previous figures.
- the heater 13 is another Exemplary embodiment of the guide device 17 according to the invention, which is an electrostatically charged conveyor belt guided over rollers 83 and 85 87 includes. This serves to apply the substrate 5 to the fixing device 13 convict.
- the heating device 13 is a stationary guide element 89 arranged, which is formed here by a guide plate.
- the inherent rigidity of the Substrate 5 and / or the special shape of the electrostatic conveyor belt 87 and / or the special shape of the guide element 89 enable one straight transport of the substrate 5 without the substrate 5 bending.
- the transport path of the substrate 5 here runs parallel to the horizontal.
- the heating device 13, as seen in the transport direction 11 of the substrate 5, is one Downstream cooling device 91, for cooling the substrate and the located toner image is used.
- the cooling device 91 are two further guide elements Subordinate 93 and 95, which the substrate 5 in a between two Transport rollers 97 and 99 formed nip guide.
- this is Substrate 5 in the area of the heating device 13 and the cooling device 91 free floating, that is, it has no contact with a surface, so that when it is melted on the top 7 of the substrate Toner image by means of the heater 13 an impairment of the on Underside of substrate 9, already fixed toner image excluded can be.
- Cooling device 91 To support the substrate 5 in the area of the heating device 13 and Cooling device 91, so that it does not bend, can be the underside of the substrate 9 by means of a blowing device, not shown, from below using compressed air are applied, as indicated by arrows 103.
- the effective range / fixing range of the heating device 13 - viewed in the substrate transport direction 11 - is very short, preferably less than 20 cm, for example 10 cm.
- the heating device 13 must be designed such that it can transmit a very high energy density to the substrate, so that it is possible to melt the toner image in the desired manner over this short distance.
- the heating device 13 can be formed, for example, by a radiation device which has at least one high-intensity lamp which emits predominantly in the UV range. In principle, every wavelength range of this UV lamp can be used for melting. However, the UV range is preferred because the toners used usually absorb the electromagnetic radiation very well in this spectrum and the intensity of the light sources in this range is very high.
- the toner (s) of the toner image and the substrate absorb the radiation very well, but the light sources in this area are often not of sufficient intensity or the light source, for example a CO 2 laser, is too expensive.
- the radiation device can, for example, also have a xenon flash lamp, by means of which light pulses are applied to the toner image in order to melt it.
- hot air is applied to the toner image in order to melt it.
- water vapor can also be added to the hot air.
- this acts on the toner image with microwave radiation.
- FIG. 7 shows a perspective view of a section of an embodiment of the heating device 13 shown in FIG. 6 first microwave resonator 105, to which a second microwave resonator is directly attached 107 connects. These each have a slit-like shape, extending transversely to the Substrate transport direction 6 extending opening 109 through which the substrate 5, as described with reference to FIG. 3, is guided in a free-floating manner. It is it can be seen that the range of action of the microwave resonators 105, 107 -in Top view of the transport path of the substrate seen - very small or is short. However, by means of such a heating device 13 transmit a very high energy density to the substrate 5 without contact become.
- one of the microwave resonators 105, 107 is often sufficient to melt the toner image in the desired manner.
- One of the two microwave resonators can therefore optionally be dispensed with.
- the standing wave field In order to achieve a homogeneous heating with only one microwave resonator with a standing wave field, the standing wave field must oscillate periodically in a suitable manner periodically perpendicular to the feed / substrate transport direction.
- the width b 1 of the microwave resonator 105 and the width b 2 of the microwave resonator 107 are each preferably in a range from 2 cm to 4 cm.
- the microwave resonators emit microwaves that have a frequency of, for example, 2450 GHz.
- the two microwave resonators serve to ensure homogeneous heating of the toner image.
- the guide device described with reference to FIG. 6 17 also readily in the case of one running in the vertical direction Transport path of the substrate 5 can be used. It is preferably the Direction of transport from top to bottom, i.e. following gravity, what advantages in stabilizing the substrate 5 made of a flexible material brings with it. Furthermore, the displacement of the substrate 5 by gravity supports or possibly only in the area of the fixing device 3 caused by gravity.
- Relationships used in subclaims point to the others Training the subject of the main claim by the features of respective subclaim; they are not a waiver of attainment an independent, objective protection for the combinations of features to understand the related subclaims.
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Abstract
Description
- Figur 1
- einen Ausschnitt eines Ausführungsbeispiels einer Fixiereinrichtung mit einem ersten Ausführungsbeispiel der erfindungsgemäßen Führungseinrichtung;
- Figur 2
- ein zweites Ausführungsbeispiel der Führungseinrichtung;
- Figur 3
- eine Seitenansicht eines Ausführungsbeispiels einer Heizeinrichtung;
- Figur 4
- eine Seitenansicht der Heizeinrichtung gemäß Figur 3 mit einem weiteren Ausführungsbeispiel der Führungseinrichtung;
- Figur 5
- einen Längsschnitt durch ein Ausführungsbeispiel einer Leiste, die Teil einer Halteeinrichtung für ein Substrat ist;
- Figur 6
- einen Ausschnitt aus einem Ausführungsbeispiel einer Druck- oder Kopiermaschine im Bereich einer Fixiereinrichtung und
- Figur 7
- eine perspektivische Darstellung eines weiteren Ausführungsbeispiels der Heizeinrichtung.
- 1
- Druck- oder Kopiermaschine
- 3
- Fixiereinrichtung
- 5
- Substrat
- 7
- Oberseite
- 9
- Unterseite
- 11
- Transportrichtung
- 13
- Heizeinrichtung
- 15
- Luftströmung
- 17
- Führungseinrichtung
- 19
- 1. Blaseinrichtung
- 21
- Luftstrahlen
- 23
- Wand
- 24
- Strahlungseinrichtung
- 25
- 1. Grundplatte
- 27
- Durchgangsöffnungen
- 29
- Luftstrahl
- 31
- 2. Blaseinrichtung
- 33
- 2.Grundplatte
- 35
- Freiraum
- 37
- Durchgangsöffnungen
- 39
- Luftstrahl
- 41
- Schutzplatte
- 43
- Zwischenraum
- 45
- Pfeil
- 47
- Strahler
- 49
- Mikrowellenresonator
- 51
- Öffnung
- 53
- 1.Druckkammer
- 55
- Öffnung
- 57
- Lochplatte
- 59
- 2.Druckkammer
- 61
- Öffnung
- 63
- Lochplatte
- 65
- Linie
- 67
- Halteinrichtung
- 69
- Achse
- 71
- Schwenkhebel
- 73
- Bewegungsbahn
- 75
- Bewegungsbahn
- 77
- Leiste
- 79
- Öffnung
- 81
- Verbindungskanal
- 83
- Rolle
- 85
- Rolle
- 87
- Transportband
- 89
- Führungselement
- 91
- Kühleinrichtung
- 93
- Führungselement
- 95
- Führungselement
- 97
- Transportrolle
- 99
- Transportrolle
- 101
- Vorderkante
- 102
- Hinterkante
- 103
- Druckluft
- 105
- Mikrowellensonator
- 107
- Mikrowellenresonator
- 109
- Öffnung
- H
- Horizontale
- h
- Höhe
- b1
- Breite Resonator I
- b2
- Breite Resonator II
Claims (26)
- Digitale Druck- oder Kopiermaschine (1) zum einseitigen oder doppelseitigen Bedrucken eines Substrats (5) unter Verwendung mindestens eines Toners, mit mindestens einer Fixiereinrichtung (3) zum Fixieren des Tonerbildes auf dem Substrat (5), wobei die Fixiereinrichtung (3) mindestens eine Heizeinrichtung (13) zum Aufschmelzen des Tonerbildes aufweist, an der das Substrat (5) vorbeiführbar ist, gekennzeichnet durch eine Führungseinrichtung (17) zur frei schwebenden Verlagerung des Substrats (5) im Wirkungsbereich der Heizeinrichtung (13).
- Druck- oder Kopiermaschine nach Anspruch 1, dadurch gekennzeichnet, dass der Schwebezustand des Substrats (5) durch zumindest ein auf die das zu fixierenden Tonerbild aufweisende Oberseite (7) und/oder die Unterseite (9) des Substrats (5) wirkendes Luftkissen erreichbar ist.
- Druck- oder Kopiermaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Führungseinrichtung (17) mindestens eine erste Blaseinrichtung (19) zum Erzeugen eines ersten Luftkissens auf der Substratunterseite (9) aufweist, wobei die erste Blaseinrichtung (19) mindestens eine gegen die Substratunterseite (9) richtbare Düse zum Beaufschlagen des Substrats (5) mit unter Druck stehender Luft (21) umfasst.
- Druck- oder Kopiermaschine nach Anspruch 3, dadurch gekennzeichnet, dass der Luftstrahl (21) zumindest eine senkrecht zur Substratunterseite (9) und gegebenenfalls eine in Transportrichtung (11) des Substrats (5) gerichtete Richtungskomponente aufweist.
- Druck- oder Kopiermaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet , dass die erste Blaseinrichtung (19) eine parallel oder im Wesentlichen parallel zum Transportweg des Substrats (5) ausgerichtete erste Grundplatte (25) umfasst, die mehrere, jeweils eine Düse bildende Durchgangsöffnungen und/oder Schlitze aufweist.
- Druck- oder Kopiermaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zum Aufschmelzen des Tonerbildes mittels der Heizeinrichtung (13) die den zu fixierenden Toner aufweisende Substratoberseite (7) mit heißer Luft (15) beaufschlagbar ist.
- Druck- oder Kopiermaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Führungseinrichtung (17) mindestens eine zweite Blaseinrichtung (31) zur Erzeugung eines zweiten Luftkissens auf der das zu fixierende Tonerbild aufweisenden, der Heizeinrichtung (13) gegenüberliegenden Oberseite (7) des Substrats (5) umfasst.
- Druck- oder Kopiermaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die zweite Blaseinrichtung (31) mindestens eine parallel oder im Wesentlichen parallel zum Transportweg des Substrats (5) ausgerichtete zweite Grundplatte (33) umfasst, die mehrere, jeweils eine Düse bildende Durchgangsöffnungen (37) und/oder Schlitze aufweist.
- Druck- oder Kopiermaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Heizeinrichtung (13) von einer Strahlungseinrichtung (24) gebildet ist, mittels derer das Substrat (5) mit elektromagnetischer Strahlung beaufschlagbar ist und dass im Strahlungspfad zwischen der Strahlungseinrichtung (24) und dem Substrat (5) die zweite Grundplatte (33) angeordnet ist.
- Druck- oder Kopiermaschine nach Anspruch 9, dadurch gekennzeichnet, dass im Strahlungspfad zwischen der Strahlungseinrichtung (24) und der zweiten Grundplatte (33) eine durchgangsöffnungsfreie Schutzplatte (41) angeordnet ist.
- Druck- oder Kopiermaschine nach einem der vorhergehenden Ansprüche 9 und 10, dadurch gekennzeichnet, dass die zweite Grundplatte (33) und die Schutzplatte (41) aus einem transparenten, die von der im eingeschalteten Zustand der Strahlungseinrichtung (24) emittierten elektromagnetischen Strahlung durchlässigen Material bestehen.
- Druck- oder Kopiermaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Freiraum (43) zwischen der Schutzplatte (41) und der zweiten Grundplatte (33) mit unter Druck stehender Luft beaufschlagbar ist.
- Druck- oder Kopiermaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Heizeinrichtung (13) mindestens einen Mikrowellenresonator (49) umfasst, der eine schlitzförmige Öffnung (51) aufweist, durch die das Substrat (5) frei schwebend geführt ist, und dass in den Mikrowellenresonator (49) mindestens eine Blaseinrichtung zur Erzeugung eines Luftkissens auf der Ober- und/oder Unterseite des Substrats (5) integriert ist.
- Druck- oder Kopiermaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Führungseinrichtung (17) eine in und entgegen der Transportrichtung (11) des Substrats (5) verlagerbare Halteeinrichtung (67) umfasst, mittels derer das Substrat (5) an seinem Vorderkantenbereich oder Hinterkantenbereich erfassbar ist.
- Druck- oder Kopiermaschine nach Anspruch 14, dadurch gekennzeichnet, dass Halteinrichtung (67) eine sich quer zur Substrattransportrichtung (11) erstreckende Leiste (77) aufweist, die mindestens eine, vorzugsweise schlitzförmige, mit einem Unterdruck beaufschlagbare Öffnung (79) aufweist.
- Druck- oder Kopiermaschine nach Anspruch 14, dadurch gekennzeichnet, dass zur Verlagerung der Halteeinrichtung (67) ein Gelenkgetriebe, eine Kurbelschwinge oder ein Rädermechanismus einsetzbar ist.
- Druck- oder Kopiermaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Führungseinrichtung (17) mindestens ein der Heizeinrichtung (13) unmittelbar vorgeordnetes, verlagerbares erstes Führungselement, insbesondere Transportband (87) oder Rolle, aufweist, das zum Transport des Substrat (5) an die Heizeinrichtung (13) und gegebenenfalls an der Heizeinrichtung (13) vorbei dient.
- Druck- oder Kopiermaschine nach Anspruch 17, dadurch gekennzeichnet, dass die Führungseinrichtung (17) mindestens ein -in Substrattransportrichtung (11) gesehen- in dem Zwischenraum zwischen dem ersten Führungselement (87) und der Heizeinrichtung (13) feststehend angeordnetes zweites Führungselement (89), insbesondere Führungsplatte, aufweist.
- Druck- oder Kopiermaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Wirkungsbereich/Fixierbereich der Heizeinrichtung (13) -in Substrattransportrichtung (11) gesehen- sehr kurz, vorzugsweise kleiner 20 cm, insbesondere in etwa 10 cm, ist.
- Druck- oder Kopiermaschine nach Anspruch 19, dadurch gekennzeichnet, dass die übertragbare Energiedichte der berührungslos arbeitenden Heizeinrichtung (13) sehr hoch ist
- Druck- oder Kopiermaschine nach Anspruch 20, dadurch gekennzeichnet, dass mittels der Heizeinrichtung (13) elektromagnetische Strahlung, heiße Luft und/oder Dampf, insbesondere Wasserdampf auf das zu fixierende Tonerbild aufbringbar ist.
- Druck- oder Kopiermaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, eine Steuereinrichtung zur Steuerung der Substratgeschwindigkeit und/oder der Lage des Substrats relativ gegenüber der Heizeinrichtung.
- Druck- oder Kopiermaschine nach einem der vorhergehenden Ansprüche, insbesondere nach Anspruch 13, dadurch gekennzeichnet , dass die schlitzförmige Öffnung (51) des Mikrowellenresonators (49) durch wenigstens eine Lochplatte (57, 63) begrenzt ist.
- Druck- oder Kopiermaschine nach Anspruch 23, dadurch gekennzeichnet , dass die Lochplatte (57, 63) aus einem Werkstoff mit geringer Mikrowellenabsorption gefertigt ist.
- Druck- oder Kopiermaschine nach einem der vorhergehenden Ansprüche, insbesondere nach Anspruch 13, dadurch gekennzeichnet, dass der Transportweg des Substrates im Bereich des Mikrowellenresonators in vertikaler Richtung, vorzugsweise von oben nach unten, verläuft.
- Druck- oder Kopiermaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass nach der Heizeinrichtung eine bezüglich des Substrates vorzugsweise berührungslos arbeitende Kühleinrichtung angeordnet ist.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10064583 | 2000-12-22 | ||
| DE10064583 | 2000-12-22 | ||
| DE10143988A DE10143988A1 (de) | 2000-12-22 | 2001-09-07 | Digitale Druck- oder Kopiermaschine |
| DE10143988 | 2001-09-07 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1217463A2 true EP1217463A2 (de) | 2002-06-26 |
| EP1217463A3 EP1217463A3 (de) | 2005-02-09 |
| EP1217463B1 EP1217463B1 (de) | 2009-10-21 |
Family
ID=26008061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01128009A Expired - Lifetime EP1217463B1 (de) | 2000-12-22 | 2001-11-24 | Digitale Druck- oder Kopiermaschine mit Fixiereinrichtung |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US7092664B2 (de) |
| EP (1) | EP1217463B1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1475675A1 (de) * | 2003-05-06 | 2004-11-10 | Eastman Kodak Company | Vorrichtung und Verfahren zur Handhabung von Bedruckstoff innerhalb einer Mikrowelleneinrichtung eines Bildformungsapparates |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10359666B4 (de) * | 2003-12-18 | 2011-06-16 | Eastman Kodak Co. | Verfahren und Fixiereinrichtung zum Fixieren von Toner auf einem Bedruckstoff |
| US7298994B2 (en) * | 2004-04-16 | 2007-11-20 | Eastman Kodak Company | Process and printing machine for the use of liquid print colors |
| JP4858196B2 (ja) * | 2007-01-31 | 2012-01-18 | 富士ゼロックス株式会社 | 定着装置 |
| DE102007048158B3 (de) * | 2007-10-08 | 2009-05-20 | OCé PRINTING SYSTEMS GMBH | Kühleinrichtung und Kühlverfahren für einen Bedruckstoff bei einem elektrografischen Druck- oder Kopiergerät |
| US8606165B2 (en) * | 2008-04-30 | 2013-12-10 | Xerox Corporation | Extended zone low temperature non-contact heating for distortion free fusing of images on non-porous material |
| US8422930B2 (en) * | 2010-03-25 | 2013-04-16 | Eastman Kodak Company | Safe radiant toner heating apparatus with membrane |
| JP4945651B2 (ja) * | 2010-03-26 | 2012-06-06 | シャープ株式会社 | レーザ定着装置、該レーザ定着装置を備える画像形成装置、および該画像形成装置を用いる画像形成方法 |
| US20150197034A1 (en) * | 2014-01-13 | 2015-07-16 | Saint-Gobain Placo Sas | Apparatus and Method for Constructing Building Boards Using Low Friction Surfaces |
| CN113993801B (zh) | 2019-06-25 | 2024-04-09 | 富士胶片商业创新有限公司 | 加热装置以及图像形成装置 |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1256767A (en) * | 1916-10-30 | 1918-02-19 | Sigvart C O Berg | Switch-lock. |
| DE7027581U (de) | 1969-07-24 | 1970-12-23 | Minolta Camera Kk | Fixiervorrichtung fuer elektrische kopiergeraete. |
| JPS56135867A (en) * | 1980-03-26 | 1981-10-23 | Copyer Co Ltd | Fixing device for copying machine |
| JPS57130074A (en) * | 1981-02-06 | 1982-08-12 | Sanyo Electric Co Ltd | Microwave heater |
| JPS60232581A (ja) * | 1984-05-04 | 1985-11-19 | Dainippon Screen Mfg Co Ltd | 定着装置 |
| JPH0772811B2 (ja) | 1987-11-10 | 1995-08-02 | 株式会社日立製作所 | 両面記録装置 |
| CA2056272C (en) | 1991-06-14 | 2001-10-16 | Patrick Salatto, Jr. | Combined range laser scanner |
| NL9201545A (nl) | 1992-09-04 | 1994-04-05 | Oce Nederland Bv | Stralingsfixeerinrichting. |
| DE4235667C1 (de) * | 1992-10-22 | 1994-01-05 | Siemens Nixdorf Inf Syst | Druck- oder Kopiergerät mit einer Kühleinrichtung für den Aufzeichnungsträger |
| EP0758766B1 (de) * | 1995-08-10 | 2001-05-30 | Xeikon Nv | Elektrostatografischer Drucker |
| US5895152A (en) * | 1996-11-13 | 1999-04-20 | Sharp Kabushiki Kaisha | Fixing device and fixing temperature control method |
| JPH10254282A (ja) | 1997-03-14 | 1998-09-25 | Agfa Gevaert Nv | シート供給型多層両面複写の1回パスによる融着 |
| EP0867786A1 (de) | 1997-03-14 | 1998-09-30 | Agfa-Gevaert N.V. | Schmelzfixierung von zweiseitigen mehrschichtigen Kopien in einem einzigen Umlauf |
| JPH11202738A (ja) * | 1998-01-16 | 1999-07-30 | Ricoh Co Ltd | 用紙冷却装置 |
-
2001
- 2001-11-24 EP EP01128009A patent/EP1217463B1/de not_active Expired - Lifetime
- 2001-12-10 US US10/016,335 patent/US7092664B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1475675A1 (de) * | 2003-05-06 | 2004-11-10 | Eastman Kodak Company | Vorrichtung und Verfahren zur Handhabung von Bedruckstoff innerhalb einer Mikrowelleneinrichtung eines Bildformungsapparates |
Also Published As
| Publication number | Publication date |
|---|---|
| US7092664B2 (en) | 2006-08-15 |
| EP1217463B1 (de) | 2009-10-21 |
| US20020191993A1 (en) | 2002-12-19 |
| EP1217463A3 (de) | 2005-02-09 |
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