EP0629925B1 - Vorbehandlungsgerät für Empfängermaterial - Google Patents

Vorbehandlungsgerät für Empfängermaterial Download PDF

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Publication number
EP0629925B1
EP0629925B1 EP19940304262 EP94304262A EP0629925B1 EP 0629925 B1 EP0629925 B1 EP 0629925B1 EP 19940304262 EP19940304262 EP 19940304262 EP 94304262 A EP94304262 A EP 94304262A EP 0629925 B1 EP0629925 B1 EP 0629925B1
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EP
European Patent Office
Prior art keywords
receptor material
conditioning apparatus
receptor
heating
path
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP19940304262
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English (en)
French (fr)
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EP0629925A1 (de
Inventor
Etienne Marie De Cock
Lucien Amedé De Schampelaere
Wim Martha Victor Smet
Eric Florent Louisa Soulliart
Ludo Verluyten
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Xeikon NV
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Xeikon NV
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Publication date
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Priority to EP19940304262 priority Critical patent/EP0629925B1/de
Publication of EP0629925A1 publication Critical patent/EP0629925A1/de
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Publication of EP0629925B1 publication Critical patent/EP0629925B1/de
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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/65—Apparatus which relate to the handling of copy material
    • 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
    • G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
    • G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
    • G03G15/1695—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer with means for preconditioning the paper base before the transfer
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00535—Stable handling of copy medium
    • G03G2215/00666—Heating or drying device

Definitions

  • This invention relates to a paper receptor material conditioning apparatus, in particular to such an apparatus for conditioning a moving paper web prior to entry into an electrostatographic printer.
  • An electrostatographic printing apparatus is intended for making a large number of prints and finds use, e.g., in the field wherein classical offset printing machines are applied for making thousands of prints in a single run.
  • Electrostatographic printing operates according to the principles and embodiments of non-impact printing as described, e.g., in Principles of Non-Impact Printing by Jerome L Johnson - Palatino Press - Irvine CA, 92715 USA.
  • Electrostatographic printing includes electrographic printing in which an electrostatic charge is deposited image-wise on a dielectric recording member as well as electrophotographic printing in which an overall electrostatically charged photoconductive dielectric recording member is image-wise exposed to conductivity increasing radiation producing thereby a "direct” or “reversal” toner-developable charge pattern on said recording member.
  • the toner image is transferred onto a printing stock material, usually paper in the form of a web whereon the toner image is fixed, whereupon the web is cut into sheets containing the desired print frame.
  • a printing stock material usually paper in the form of a web whereon the toner image is fixed, whereupon the web is cut into sheets containing the desired print frame.
  • the transfer efficiency of toner onto the receptor paper is not only dictated by the contact of the paper with the toner-laden recording member and the deposited charge but also by the conductivity of the paper and particularly by its water content. Paper is not a simple insulating dielectric, so the electrical properties of plain paper have some influence on toner transfer.
  • Paper types with high porosity i.e. high permeability for gases loaded with ions by corona discharge do not allow an efficient toner transfer.
  • Variation in gas permeability or porosity between different paper types is due to overall thickness, degree of filling with clays, sizings, and other paper treating substances.
  • a paper web conditioning apparatus for conditioning a moving paper receptor material suitable for use in an electrostatographic printer, said apparatus comprising
  • the paper receptor material may consist of paper or may comprise, for example, paper containing synthetic fibres or paper coated on at least one side with a non-paper material, for example, with a synthetic polymeric material.
  • the moisture control means is enclosed in a heating cabinet having a receptor material entrance, a receptor material exit, means for the entrance of fresh air and exhaust means for expelling moist air produced by heating the receptor material.
  • a cooling cabinet may be provided comprising means for cooling the heated receptor material with dry air to bring its temperature within the range of 15 to 30°C before leaving the apparatus.
  • the heating cabinet is connected to a cooling cabinet.
  • the conditioning apparatus comprises control means for controlling said heating means, and optionally said cooling means, in response to the electrical condition of the receptor material sensed by said sensing means.
  • the output from the sensing means may be fed to a visual indicator from which the operator may check the condition of the receptor material and make adjustments to the moisture control means to bring the electrical condition of the receptor material within a desired range.
  • the invention also provides a method for conditioning a moving receptor material for use in an electrostatographic printer, said method comprising:
  • the heating means may comprise a heated rotatable drum or cylinder in contact with at least one side of said receptor material as it moves along said receptor material path.
  • the heating means may comprise a radiant-heat dryer having at least one radiant-heat source positioned to project infrared radiation onto at least one side of the receptor material as it moves along the receptor material path.
  • the radiant-heat dryer has a dominant energy output wavelength within the range of from 1.5 ⁇ m to 10 ⁇ m.
  • the moisture control means may comprise at least one nozzle positioned to direct a stream of hot air onto at least one side of the receptor material as it moves along the receptor material path.
  • the heating means may even be a dielectric dryer containing at least one radio-frequency or microwave source positioned such that the receptor material moves through the electromagnetic field of the source as it moves along the receptor material path.
  • the temperature to which the receptor material is heated by the heating means is preferably at least 120°C, such as about 150°C. Too high a temperature may lead to damage being caused to the receptor material.
  • the receptor material is conditioned to a moisture content of from 1 to 2% by weight, preferably up to 1.5%. We prefer that the moisture content does not fall below 0.5%, since receptor material which is too dry might result in high triboelectric charges to be generated thereon, the discharge of which in the printer may have undesirable effects.
  • the sensing means may comprise a corona discharge device positioned adjacent the receptor material path to build up a predetermined electrostatic charge on at least one side of the receptor material and, in a first embodiment, means positioned downstream of the corona discharge device for sensing the level of electrostatic charge retained on the receptor material.
  • the supply current fed to the corona discharge device is preferably within the range of 1 to 10 ⁇ A/cm, most preferably from 2 to 5 ⁇ A/cm, depending upon the receptor material characteristics and will be positioned at a distance of from 3 mm to 10 mm from the path of the receptor material.
  • means are positioned downstream of the corona discharge device for sensing the decay of electrostatic charge on said receptor material.
  • the means for sensing the decay of electrostatic charge on said receptor material may comprise a plurality of spaced electrometers positioned adjacent said receptor material path and means for comparing output signals from said electrometers.
  • a receptor material charge discharging device such as an AC corona device, is positioned downstream of the charge sensing means for discharging the static charge on the receptor material before it leaves the apparatus.
  • the receptor material conditioning apparatus is coupled to an electrostatographic printer for forming an image onto a receptor material.
  • the printer may comprise at least one toner image-producing electrostatographic station having rotatable endless surface means onto which a toner image can be formed, means for conveying the receptor material past the stations and means for transferring the toner image on the rotatable surface means onto the receptor material.
  • the humidity of the atmosphere inside said electrostatographic printer is controlled. This is done with the aim of maintaining the electrical condition of the receptor material within a desired range.
  • the receptor material is in the form of a web, for example supplied from a roll, but the invention is equally applicable to receptor material in the form of separate sheets.
  • a printer 10 having a supply station 13 in which a roll 14 of web material 12 is housed in sufficient quantity to print, say, 3 to 5,000 images.
  • the web 12 is conveyed from the supply station 13, through the paper conditioning apparatus 11 into a tower-like printer housing 44 in which a support column 46 is provided, housing four similar printing stations A to D which are arranged to print yellow, magenta, cyan and black images.
  • a further station E is provided in order to optionally print an additional colour, for example a specially customised colour.
  • the web of paper 12 is conveyed in an upwards direction past the printing stations in turn.
  • the printing stations A to E are mounted in a substantially vertical configuration resulting in a reduced footprint of the printer and additionally making servicing easier.
  • the column 46 may be mounted against vibrations by means of a platform 48 resting on springs 50, 51.
  • the image on the web is fixed by means of the image-fixing station 16 and fed to a cutting station 20 (schematically represented) and a stacker 52 if desired.
  • the web 12 is conveyed through the printer by two drive rollers 22a, 22b one positioned between the conditioning station 11 and the first printing station A and the second positioned between the image-fixing station 16 and the cutting station 20.
  • the drive rollers 22a, 22b are driven by controllable motors, 23a, 23b.
  • One of the motors 23a, 23b is speed controlled at such a rotational speed as to convey the web through the printer at the required speed, which may for example be about 125 mm/sec.
  • the other motor is torque controlled in such a way as to generate a web tension of, for example, about 1 N/cm.
  • each printing station comprises a cylindrical drum 24 having a photoconductive outer surface 26.
  • a charging device 28 capable of uniformly charging the drum surface
  • an exposure station 30 which will image-wise and line-wise expose the photoconductive drum surface causing the charge on the latter to be selectively dissipated, leaving an image-wise distribution of electric charge to remain on the drum surface.
  • This so-called "latent image” is rendered visible by a developing station 32 which brings a toner developer in contact with the drum surface 26. The toner particles are attracted to the latent image on the drum surface by the electric field between the drum surface and the developer so that the latent image becomes visible.
  • the toner image adhering to the drum surface 26 is transferred to the moving web 12 by a transfer corona device 34.
  • the moving web 12 is in face-to-face contact with the drum surface 26 over a wrapping angle ⁇ of about 15° determined by the position of guide rollers 36.
  • the transfer corona device being on the opposite side of the web to the drum, and having a high potential opposite in sign to that of the charge on the toner particles, attracts the toner particles away from the drum surface 26 and onto the surface of the web 12.
  • the transfer corona device typically has its corona wire positioned about 7 mm from the housing which surrounds it and 7 mm from the paper web.
  • a typical transfer corona current is about ⁇ 3 ⁇ A/cm.
  • the transfer corona device 34 also serves to generate a strong adherent force between the web 12 and the drum surface 26, causing the latter to be rotated in synchronism with the movement of the web 12. Circumferentially beyond the transfer corona device 34 there is positioned a web discharge corona device 38 driven by alternating current.
  • the drum surface 26 is pre-charged by a corona 40, causing any residual toner which might still cling to its surface to become loosened so that it may be collected at a cleaning unit 42 known in the art.
  • the cleaning unit 42 includes a rotating cleaning brush 43. After cleaning, the drum surface is ready for another recording cycle.
  • the web After passing the first printing station A, as described above, the web passes successively to printing stations B, C, D and E, where images in other colours are transferred to the web. It is critical that the images produced in successive stations be in register with each other. In order to achieve this, the start of the imaging process at each station has to be critically timed.
  • the paper web 12 is unwound from a supply roll 14 and led through an entrance slit 53 into a heating cabinet 54 wherein the paper web 12 follows a curved path defined by a plurality of rollers 100. Between the first and second of said rollers 100, the paper web is in contact with a metal heating drum 55, having a tubular infrared heating source 56 inside.
  • a fan 57 mounted in a wall of the cabinet 54 expels moist air out of the cabinet 54 while ambient air enters through the inlet slits 58.
  • the heated paper web 12 passes through a slot 59 into a cooling cabinet 60, wherein by means of ventilators 61 and 62 cold dry air is circulated along both sides of the paper web 12, as indicated by the arrows 63 and 64.
  • the cooling box 65 has a tight entrance slit 66 closed by a felt brush and contains heat-exchangers 67 and 68 in which circulating cold water (at a temperature of for example 5° to 7°C) is passed, through cold water inlets 69 and outlets 70.
  • a reservoir (not shown) is connected to the drain holes 77 of the cooling box 65 to collect condensed water which is then led to a drain.
  • the paper web 12 leaves the cooling box 65 via a tight exit slit 71 and enters a housing 78 containing a sensing means.
  • the paper web 12 follows a curved path into contact with an earthed metal drum 72 and closely adjacent a DC corona discharge unit 73, from which it receives a predetermined corona charge.
  • the paper web 12 then passes an electrometer head 74, downstream of the corona discharge unit 73, which measures the remaining charge level as a voltage which is related to the electrical condition of the paper.
  • the signal from the electrometer head 74 passes via a line 102 to an electronic control device 101.
  • the control device 101 processes said signal in accordance with a previous calibration of the apparatus and controls the supply of electrical power via line 103 to the heating source 56 to automatically adjust the heat energy supply in accordance with the remaining charge level sensed by the electrometer 74 to bring the condition of the paper within the desired range.
  • the corona current is about 3 ⁇ A/cm and the thickness of the paper is about 100 ⁇ m, with a weight of 100g/m 2 , for good subsequent toner transfer results the electrometer should typically detect a charge height of at least 5.5 x 10 2 V.
  • the paper web passes from the exit slot 76 directly into the printer shown in Figure 1.
  • the web drive for the printer serves to drive the paper web 12 from its supply roll 14 through the conditioning apparatus, the paper web being maintained in a tensioned state by the brake 15 acting on the roll 14.
  • the output signal from the electrometer head 74 may alternatively or additionally be fed to a visual indicator from which the operator may check the condition of the paper web.
  • two spaced electrometer heads 74a and 74b are positioned adjacent the paper web path downstream of the corona discharge unit 73.
  • the control device (not shown in Figure 4) compares the signals received from the two electrometers 74a and 74b to determine the rate of decay of electrostatic charge on the paper web. This rate of decay, being indicative of the electrical condition of the paper web, is then used to automatically adjust the heat energy supply in accordance with the rate of charge decay sensed by the electrometer heads 74a, 74b to bring the condition of the paper within the desired range.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)

Claims (18)

  1. Empfängermaterial-Konditioniervorrichtung zum Konditionieren eines sich bewegenden Papierempfängermaterials (12), die für eine Verwendung in einem elektrostatografischen Drucker geeignet ist, wobei die besagte Vorrichtung umfaßt:
    (i) eine Einrichtung (100), die einen Empfängermaterialpfad durch die Vorrichtung festlegt;
    (ii) eine Heizeinrichtung (55) zum Verringern des Feuchtigkeitsgehalts des Empfängermaterials, das sich entlang des Empfängermaterialpfades bewegt;
    (iii) eine hinter der besagten Heizeinrichtung angeordnete Kühleinrichtung (65) zum Abkühlen des erwärmten Empfängermaterials, das sich entlang des Empfängermaterialpfades bewegt;
    (iv) eine hinter der besagten Kühleinrichtung angeordnete Sensoreinrichtung (73, 74), um den elektrischen Zustand des erwärmten und abgekühlten Empfängermaterials zu erfassen; und
    (v) eine Steuereinrichtung (101) zum Steuern der besagten Heizeinrichtung (55) ansprechend auf den von der besagten Sensoreinrichtung (74) erfaßten elektrischen Zustand des Empfängermaterials.
  2. Empfängermaterial-Konditioniervorrichtung nach Anspruch 1, bei welcher das Empfängermaterial (12) in Form einer Bahn vorliegt.
  3. Empfängermaterial-Konditioniervorrichtung nach Anspruch 1 oder 2, bei welcher die besagte Heizeinrichtung (55) in einem Heizraum (54) eingeschlossen ist, der einen Empfängermaterialeinlaß (53), einen Empfängermaterialauslaß (59), eine Einrichtung (58) für den Eintritt von Frischluft und eine Absaugeinrichtung (57) zum Ausstoßen von feuchter Luft aufweist, die durch ein Erwärmen des besagten Empfängermaterials (12) erzeugt wird.
  4. Empfängermaterial-Konditioniervorrichtung nach einem beliebigen vorangehenden Anspruch, bei welcher die besagte Kühleinrichtung einen Kühlraum (60) umfaßt, umfassend eine Einrichtung (65) zum Kühlen des erwärmten Empfängermaterials (12) mit trockener Luft, um seine Temperatur vor dem Verlassen der Vorrichtung in den Bereich von 15 bis 30°C zu bringen.
  5. Empfängermaterial-Konditioniervorrichtung nach den Ansprüchen 3 und 4, bei welcher der besagte Kühlraum (60) mit dem besagten Heizraum (54) verbunden ist.
  6. Empfängermaterial-Konditioniervorrichtung nach einem beliebigen vorangehenden Anspruch, bei welcher die besagte Heizeinrichtung eine erwärmte drehbare Trommel oder einen erwärmten drehbaren Zylinder (55) umfaßt, der sich in Berührung mit mindestens einer Seite des besagten Empfängermaterials (12) befindet, während es sich entlang des besagten Empfängermaterialpfades bewegt.
  7. Empfängermaterial-Konditioniervorrichtung nach einen beliebigen der Ansprüche 1 bis 6, bei welcher die besagte Heizeinrichtung einen Strahlungswärmetrockner umfaßt, der mindestens eine Strahlungswärmequelle aufweist, die angeordnet ist, um Infrarotstrahlung auf mindestens eine Seite des Empfängermaterials (12) zu werfen, während es sich entlang des besagten Empfängermaterialpfades bewegt.
  8. Empfängermaterial-Konditioniervorrichtung nach Anspruch 7, bei welcher die besagte Strahlungswärmequelle eine dominierende Energieausstoßwellenlänge innerhalb des Bereichs von 1,5 µm bis 10 µm aufweist.
  9. Empfängermaterial-Konditioniervorrichtung nach einem beliebigen der Ansprüche 1 bis 8, bei welcher die besagte Heizeinrichtung mindestens eine Düse umfaßt, die angeordnet ist, um einen Strom heißer Luft auf mindestens eine Seite des besagten Empfängermaterials (12) zu lenken, während es sich entlang des besagten Empfängermaterialpfades bewegt.
  10. Empfängermaterial-Konditioniervorrichtung nach einem beliebigen der Ansprüche 1 bis 9, bei welcher die besagte Heizeinrichtung ein dielektrischer Trockner ist, der mindestens eine Radiofrequenz- oder Mikrowellenquelle enthält, die derart angeordnet ist, daß sich das Empfängermaterial (12) durch das elektromagnetische Feld der besagten Quelle bewegt, während es sich entlang des besagten Empfängermaterialpfades bewegt.
  11. Empfängermaterial-Konditioniervorrichtung nach einem beliebigen der Ansprüche 1 bis 10, bei welcher die besagte Sensoreinrichtung (73, 74) angeordnet ist, um den elektrischen Zustand des erwärmten und abgekühlten Empfängermaterials zu bestimmen, bevor es die Vorrichtung verläßt.
  12. Empfängermaterial-Konditioniervorrichtung nach Anspruch 11, bei welcher die besagte Sensoreinrichtung (73, 74) eine Koronaentladungsvorrichtung (73) umfaßt, die dem Empfängermaterialpfad benachbart angeordnet ist, um eine vorbestimmte elektrostatische Aufladung auf mindestens einer Seite des erwärmten und abgekühlten Empfängermaterials (12) aufzubauen, sowie hinter der Koronaentladungsvorrichtung angeordnete Einrichtungen (74, 74a, 74b) zum Erfassen der Stärke der auf dem besagten aufgeladenen Empfängermaterial (12) zurückgehaltenen elektrostatischen Ladung.
  13. Empfängermaterial-Konditioniervorrichtung nach Anspruch 12, bei welcher die besagte, hinter der Koronaentladungsvorrichtung angeordnete Einrichtung (74, 74a, 74b) zum Erfassen der Stärke der auf dem besagten aufgeladenen Empfängermaterial (12) zurückgehaltenen elektrostatischen Ladung eine Einrichtung (74a, 74b) zum Erfassen der Abnahme der elektrostatischen Ladung auf dem besagten Empfängermaterial (12) umfaßt.
  14. Empfängermaterial-Konditioniervorrichtung nach Anspruch 13, bei welcher die besagte Einrichtung zum Erfassen der Abnahme der elektrostatischen Ladung auf dem besagten Empfängermaterial (12) eine Mehrzahl von im Abstand angeordneten Elektrometern (74a, 74b), die dem besagten Empfängermaterialpfad benachbart angeordnet sind, sowie eine Einrichtung zum Vergleichen von Ausgangssignalen von den besagten Elektrometern umfaßt.
  15. Empfängermaterial-Konditioniervorrichtung nach Anspruch 12, 13 oder 14, bei welcher eine Ladungs-Entladevorrichtung (75) hinter der besagten Ladungs-Sensoreinrichtung (74, 74a, 74b) angeordnet ist, um die statische Ladung auf dem aufgeladenen Empfängermaterial (12) zu entladen, bevor es die Vorrichtung verläßt.
  16. System, umfassend einen elektrostatografischen Drucker (10) und eine Empfängermaterial-Konditioniervorrichtung nach einem beliebigen der Ansprüche 1 bis 15, die mit dem besagten elektrostatografischen Drucker (10) gekoppelt ist, um ein Bild auf einem Papierempfängermaterial (12) zu erzeugen, wobei dieser Drucker umfaßt:
    - mindestens eine tonerbilderzeugende elektrostatografische Station (A, B, C, D, E) mit einer drehbaren Einrichtung (26) mit Endlosoberfläche, auf der ein Tonerbild erzeugt werden kann;
    - eine Einrichtung (22) zum Vorbeitransport des Empfängermaterials (12) an der besagten mindestens einen Station (A, B, C, D, E); und
    - eine Einrichtung (34) zum Übertragen des Tonerbildes auf der besagten drehbaren Oberflächen-Einrichtung (26) auf das Empfängermaterial (12).
  17. System nach Anspruch 16, bei welchem die Feuchtigkeit der Atmosphäre innerhalb des besagten elektrostatografischen Druckers gesteuert wird.
  18. Verfahren zum Konditionieren eines sich bewegenden Papierempfängermaterials für eine Verwendung in einem elektrostatografischen Drucker, wobei das besagte Verfahren umfaßt:
    (i) Bewegen des Empfängermaterials entlang eines Empfängermaterialpfades durch eine Konditioniervorrichtung;
    (ii) Erwärmen des Empfängermaterials, das sich entlang des Empfängermaterialpfades bewegt, um seinen Feuchtigkeitsgehalt zu verringern;
    (iii) anschließendes Abkühlen des Empfängermaterials entlang des Empfängermaterialpfades;
    (iv) anschließendes Erfassen des elektrischen Zustandes des Empfängermaterials; und
    (v) Steuern des besagten Erwärmens und Abkühlens des Empfängermaterials ansprechend auf den erfaßten Zustand desselben.
EP19940304262 1993-06-18 1994-06-13 Vorbehandlungsgerät für Empfängermaterial Expired - Lifetime EP0629925B1 (de)

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EP19940304262 EP0629925B1 (de) 1993-06-18 1994-06-13 Vorbehandlungsgerät für Empfängermaterial

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EP93304774 1993-06-18
EP93304774 1993-06-18
EP19940304262 EP0629925B1 (de) 1993-06-18 1994-06-13 Vorbehandlungsgerät für Empfängermaterial

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EP0629925B1 true EP0629925B1 (de) 1996-09-04

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Publication number Priority date Publication date Assignee Title
DE19535776A1 (de) * 1995-09-26 1996-10-17 Siemens Nixdorf Inf Syst Elektrografische Druckeinrichtung zum mehrmaligen Bedrucken eines Aufzeichnungsträgers
DE69817324T2 (de) * 1998-05-08 2004-06-09 Xeikon International N.V. Gerät zur Regulierung des Feuchtigkeitsgehaltes and der Temperatur von Medien
US6049680A (en) * 1998-05-08 2000-04-11 Agfa Gevaert N.V. Apparatus for conditioning moisture content temperature of media
DE102005041848A1 (de) * 2005-09-02 2007-03-22 OCé PRINTING SYSTEMS GMBH Verfahren zur Behandlung der Oberfläche von durch eine elektrografische Druck- oder Kopiereinrichtung zu bedruckendem Papier

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JPS58174963A (ja) * 1982-04-08 1983-10-14 Fuji Xerox Co Ltd 異常コピ−防止装置
JPS5917449A (ja) * 1982-07-19 1984-01-28 Fuji Xerox Co Ltd ロ−ル紙送り装置
JPS62153073A (ja) * 1985-07-08 1987-07-08 Olympus Optical Co Ltd 画像記録装置
JPH0760275B2 (ja) * 1986-05-29 1995-06-28 松下電器産業株式会社 電子複写装置
JPH04275580A (ja) * 1991-03-01 1992-10-01 Toyo Ink Mfg Co Ltd 粉体トナーの転写方法

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