EP1976704B1 - Printer comprising an exposure head - Google Patents

Printer comprising an exposure head Download PDF

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Publication number
EP1976704B1
EP1976704B1 EP07722749A EP07722749A EP1976704B1 EP 1976704 B1 EP1976704 B1 EP 1976704B1 EP 07722749 A EP07722749 A EP 07722749A EP 07722749 A EP07722749 A EP 07722749A EP 1976704 B1 EP1976704 B1 EP 1976704B1
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EP
European Patent Office
Prior art keywords
reflectors
lamp
printer
printer according
image plane
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP07722749A
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German (de)
French (fr)
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EP1976704A2 (en
Inventor
Albrecht Schierholz
Dieter Stellmach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Phoenix Contact GmbH and Co KG
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Phoenix Contact GmbH and Co KG
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Publication date
Application filed by Phoenix Contact GmbH and Co KG filed Critical Phoenix Contact GmbH and Co KG
Priority to EP09007261A priority Critical patent/EP2093067B1/en
Publication of EP1976704A2 publication Critical patent/EP1976704A2/en
Application granted granted Critical
Publication of EP1976704B1 publication Critical patent/EP1976704B1/en
Expired - Fee Related legal-status Critical Current
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B41J11/0021—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B41J11/0021—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation
    • B41J11/00218—Constructional details of the irradiation means, e.g. radiation source attached to reciprocating print head assembly or shutter means provided on the radiation source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun

Definitions

  • the invention relates to a printer according to the preamble of claim 1, in particular a serial printer, with an exposure head for the exposure of printed images with light-curing ink.
  • Serial printers or line printers are printers that print characters one after the other within a single line. They are inexpensive to manufacture, reliable in operation and small in size, so that they are suitable as Auftischonul. Printers of this type are widely used as type printers, dot matrix printers or as ink printers. If light-curing ink is used in an ink printer, then an exposure head guided on a carriage is required in addition to the print head, which exposes and cures the printed image after printing with high radiation intensity.
  • an exposure head in which a lamp is at least partially surrounded by reflectors is arranged, with elliptical and planar reflectors are provided which direct the radiation emitted by the lamp to a light-curing ink printable image plane.
  • an "inkjet recording apparatus” known, comprising an exposure head for exposure of printed images and an exposure head housing in which a reflector is at least partially surrounded lamp is arranged, which emits in operation radiation, which passed through the reflectors on a printable with light-curing ink image plane wherein elliptical reflectors and planar reflectors are mounted in the exposure head housing and the planar reflectors are disposed on opposite side walls of the exposure head housing.
  • the printer according to the invention has an exposure head for exposure of printed images with an exposure head housing, in which a lamp is at least partially surrounded by reflectors emitted during operation radiation, which is passed through the reflectors on a light-curing ink printable image plane.
  • a lamp is at least partially surrounded by reflectors emitted during operation radiation, which is passed through the reflectors on a light-curing ink printable image plane.
  • planar reflectors are arranged on opposite side walls of the exposure head housing and designed as cross reflectors.
  • the edge region which is typically formed with a lower radiation intensity with respect to the center region, is irradiated more intensely by the printing image plane.
  • the reflection surfaces of the cross reflectors are inclined relative to the main beam direction of the lamp, that the focused beam area is reinforced at the edge in the print line direction by the reflected image of the lamp in the focal plane.
  • the cross reflectors In order to increase the edge area of the illuminated print image section, it is provided that the cross reflectors, viewed from the lamp in the direction of the print image plane, run apart like a funnel. By enlarging the illuminated print image section, the residence time required to cure the ink is reduced. Therefore, the printing speed of the printer can be increased.
  • planar reflectors are arranged on the opposite side of the lamp to the printing image plane and are designed as reflector elements.
  • the radiation emitted by the lamp in the direction opposite to the printing image plane is directed onto the printing image plane.
  • the heating of the exposure head housing is reduced by the radiation of the lamp.
  • the printer has an exposure head for exposing printed images and an exposure head housing in which a lamp is at least partially surrounded by reflectors which emits radiation during operation, which by the reflectors on a printable with a light-curing ink image plane is directed.
  • the invention provides that a fan unit is connected via at least one air duct with the exposure head, wherein the air duct opens into a cooling air space between the reflectors and the side walls of the exposure head housing.
  • the luminous element of the lamp is located in an interior space insulated from the reflectors.
  • an optimal operating state of the lamp is achieved, which has a positive effect on the life.
  • intensive cooling of the lighting head is achieved in the smallest space.
  • the lamp is mounted in the exposure head housing via at least one lamp socket, the lamp socket protruding into the air duct. This effectively cools the lampholder in the airflow and effectively reduces heat dissipation to the exposure head housing.
  • This air guide is particularly important when using a mercury vapor lamp with operating temperatures of about 900 ° C, to prevent the exposure head housing is thermally damaged.
  • a particularly advantageous embodiment of the invention provides that in the printer housing a blow-out opening for discharging heated exhaust air is provided, which is preferably arranged corresponding to the outlet opening of the air channel of the exposure head housing. This ensures that the loss heat produced in the exposure head housing by its lamp in its operation can be transported via a cooling medium such as air, for example, into the environment.
  • Fig. 4A the ellipse carrier in 2 views.
  • the invention relates to a printer, preferably a serial printer with a printer housing, in which an exposure head is mounted.
  • the exposure head is the essential component of the invention. Therefore, the figures show only the exposure head and not the printer.
  • the exposure head comprises an exposure head housing with elbows (1, 2). On the angle pieces (1, 2) a printed circuit board (3) with plug (4) and designed as a fan unit fan (10) with filter (5) are placed. Side of the two angle pieces (1, 2) identical exhaust air ducts (6, 7) are mounted, the removable segments (8, 9) have. By mutual removal of the segments (8, 9) in the exhaust air ducts (6, 7) arise output openings through which heated in the exposure head exhaust air (44) can be selectively blown on one side from the exposure head housing. At least one of these outlet openings is in fluid communication with a correspondingly provided in the printer housing discharge opening to convey the heated exhaust air from the printer, eg. In the environment.
  • the printer housing are mounted as a guide means for the exposure head and a printer head with light-curing ink carriage or rails over which the exposure head and the printer head during the printing process of the printer, controlled by a drive, traversing between two lateral end positions is moved.
  • the printer housing has only one exhaust opening.
  • the discharge opening of the printer housing and the outlet opening of the exhaust air duct (6, 7) are arranged relative to one another such that the openings are in flow connection in an end position of the exposure head. In this position, the exposure head is briefly stopped during printing and the heated exhaust air is blown out of the printer housing.
  • the exposure head additionally contains elliptical reflectors (11, 12) and cross reflectors (13, 14).
  • the light exit opening is covered by a glass pane (15), which is secured by the spring elements (16, 17) lying in the beam shadow.
  • a lamp (18) of the exposure head is not shown in this view.
  • the exposure head housing is essentially formed by the two identical angle pieces (1, 2), which are firmly connected to each other.
  • two ellipse carriers (20, 21) are inserted at a distance (19), each containing two elliptical recesses (22, 23).
  • the elliptical reflectors (11, 12) of the Inserted light exit side ago. Since the recesses (22, 23) are only slightly wider than the thickness of the elliptical reflectors (11, 12), these have after mounting the exact calculated geometric shape on its reflector surface.
  • a protective shield (28) which shields the scattered radiation of the lamps (18) towards the top and in addition the two inner tabs (24,25) of the angle pieces (1, 2) against forces of socket springs (29, 30) stabilized.
  • the printed circuit board (3) with the plug (4) for the electrical supply of the exposure head is provided, which is covered by the fan (10) with the upstream air filter (5).
  • the light exit opening of the exposure head is covered with the glass pane (15) against contamination and damage.
  • the glass pane (15) is held by spring elements (16, 17), which are engaged in the radiation shadow behind an angled bend (31, 32) of the elliptical reflectors (1, 2). As a result, annealing of the spring elements in the direct beam path is avoided.
  • the cooling air flow in the exposure head is three-dimensional and is shown for one side by the dashed line (44). On the other hand, the cooling air duct is mirror-inverted.
  • the lamp (18) emits light uniformly on all sides on its cylindrical jacket. It is arranged in a first focal point (34) of the elliptical reflectors (11, 12). In a second focal point (35) is a printing image plane (40) of the printer. Above the lamp (18), the cross reflectors (13, 14) have a region (36, 37) formed as reflector elements. This is inclined to the main beam axis (38) such that the reflected radiation (49) is largely radiated past the luminous element (39) of the lamp (18) so as not to unnecessarily heat it and to the reflected radiation (49) in addition to the exposure the print image plane (40) to use.
  • the light radiated radially by the luminous element (39) of the lamp (18) is focused by the elliptical reflectors (11, 12) in a region (45) of the printing image plane (40) and thus by a direct comparison with the direct radiation of the lamp (18) Multiple amplified.
  • this region (45) with higher irradiance in the direction of the longitudinal axis of the lamp (18) is only as long as the luminous element (39) of the lamp (18).
  • the longest possible exposure zone with a corresponding exposure intensity in the printing image plane (40) in the printing direction is advantageous.
  • the cross reflectors (13, 14) are inclined obliquely to the main beam direction (38) of the lamp (18) to the extent that the reflected images (46) of the filament (39) through the cross reflectors (13, 14 ) are respectively imaged on the printing image plane (40) following the area (45) produced by the elliptical reflectors (11, 12) with high light intensity.
  • the exposure head and the blower unit are connected to each other via an air duct, which is guided along the dashed line designated 44.
  • the air duct is guided past the luminous element (39) of the lamp (18), with the lamp socket (26, 27) protruding into the air duct.
  • This opens into a cooling air space (48) between the reflectors (11,12,13,14) and the side walls of the exposure head housing and is thereby in communication with the exhaust air duct (7, 8).

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  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Microbiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Ink Jet (AREA)
  • Facsimile Heads (AREA)

Description

Die Erfindung betrifft einen Drucker gemäß dem Oberbegriff des Anspruchs 1, insbesondere einen Serialdrucker, mit einem Belichtungskopf zur Belichtung von Druckbildern mit lichtaushärtender Tinte.The invention relates to a printer according to the preamble of claim 1, in particular a serial printer, with an exposure head for the exposure of printed images with light-curing ink.

Serialdrucker bzw. Zeilendrucker sind Drucker, die Zeichen für Zeichen nacheinander innerhalb einer Zeile drucken. Sie sind kostengünstig herzustellen, zuverlässig im Betrieb und klein in den Abmessungen, so dass sie sich als Auftischgeräte eignen.
Drucker dieser Art sind als Typendrucker, Nadeldrucker oder als Tintendrucker weit verbreitet. Wird in einem Tintendrucker lichthärtende Tinte verwendet, dann ist zusätzlich zum Druckkopf ein auf einen Schlitten geführter Belichtungskopf erforderlich, der das Druckbild nach dem Drucken mit hoher Strahlungsintensität belichtet und damit aushärtet.Serial printers or line printers are printers that print characters one after the other within a single line. They are inexpensive to manufacture, reliable in operation and small in size, so that they are suitable as Auftischgeräte.
Printers of this type are widely used as type printers, dot matrix printers or as ink printers. If light-curing ink is used in an ink printer, then an exposure head guided on a carriage is required in addition to the print head, which exposes and cures the printed image after printing with high radiation intensity.

Zur Erzielung hoher Strahlungsintensitäten ist es bei Bogenoffset-Druckmaschinen bekannt, Belichtungsköpfe mit Quecksilberdampflampen zu verwenden, die bei Betrieb Temperaturen von ca. 900°C erreichen. Derartige Belichtungsköpfe sind jedoch wegen ihrer großen Abmessungen von und der installierten großen elektrischen Leistung nicht für den Einsatz in Auftischgeräten geeignet. Die Ableitung der entstehenden Wärmemenge, die oft im Kilowattbereich liegt, würde bei Auftischgeräten zu unüberwindliche Schwierigkeiten führen. Teilweise werden flüssigkeitsgekühlte Belichtungsköpfe bei Bogenoffset-Druckmaschinen verwendet, die Kühlaggregate erfordern, deren Abmessungen allein die eines Auftischgerätes bei weitem übertreffen.To achieve high radiation intensities it is known in sheet-fed offset printing machines to use exposure heads with mercury vapor lamps, which reach temperatures of about 900 ° C during operation. However, such exposure heads are not suitable for use in tabletop devices because of their large dimensions of and installed large electrical power. The derivation of the resulting heat, which is often in the kilowatt range, would lead to insurmountable difficulties in table-top devices. In some cases, liquid-cooled exposure heads are used in sheetfed offset presses that require refrigeration units whose dimensions alone far exceed those of a tabletop device.

Auch bei Großplotteranlagen, die mit mehreren Druckköpfen auf einem Schlitten mehrere Zeilen eines Druckbildes gleichzeitig erzeugen, ist der Einsatz von Belichtungsköpfen bekannt. Sie werden mit Luft gekühlt und sind wegen ihrer großen Abmessungen von und ihrer großen elektrischen Verlustleistung nicht für Auftischgeräte geeignet. Ihre starken Lüfter erzeugen Lärm, der den zulässigen Lärmpegel von Auftischgeräten für Büroanwendungen weit überschreitet. Dieser Lärm gelangt ungedämpft direkt in die Umgebung, da die Großplotteranlagen ohne ein Gehäuse ausgestattet sind. Bei Montage eines Gehäuses besteht die Gefahr, dass sich die Wärmeenergie im Gehäuse staut und thermische Schäden verursacht. Außerdem sind die Belichtungsköpfen mit ihren zur Strahlenleitung eingesetzten Reflektoren uneffektiv für die Anforderungen eines Seriendruckers gestaltet, da sie lange gestreckte röhrenähnliche Lampen verwenden.Even with large plotter systems that produce several lines of a printed image simultaneously with several print heads on a carriage, the use of exposure heads is known. They are cooled with air and are not suitable for tabletop devices because of their large dimensions of and their large electrical power loss. Their powerful fans generate noise that far exceeds the allowable noise levels of office desk desks. This noise passes directly to the environment without being damped, since the large plotter systems are equipped without a housing. When mounting a housing there is a risk that the heat energy accumulates in the housing and causes thermal damage. In addition, the exposure heads with their reflectors used for radiation management are ineffective designed for the requirements of a serial printer, as they stretched long use tube-like lamps.

Aus der FR 2 234 966 A ist ein Belichtungskopf bekannt, in dem eine von Reflektoren zumindest teilweise umgebene Lampe angeordnet ist, wobei elliptische sowie ebene Reflektoren vorgesehen sind, die die von der Lampe emittierte Strahlung auf eine mit lichtaushärtender Tinte bedruckbare Druckbildebene leiten.From the FR 2 234 966 A an exposure head is known in which a lamp is at least partially surrounded by reflectors is arranged, with elliptical and planar reflectors are provided which direct the radiation emitted by the lamp to a light-curing ink printable image plane.

Aus der EP 1 520 718 Al ist ein "inkjet recording apparatus" bekannt, mit einem Belichtungskopf zur Belichtung von Druckbildern und einem Belichtungskopfgehäuse, in dem eine von Reflektoren zumindest teilweise umgebene Lampe angeordnet ist, die bei Betrieb Strahlung emittiert, welche durch die Reflektoren auf eine mit lichtaushärtender Tinte bedruckbare Druckbildebene geleitet wird, wobei elliptische Reflektoren sowie ebene Reflektoren in dem Belichtungskopfgehäuse montiert sind und die ebenen Reflektoren auf einander gegenüberliegenden Seitenwänden des Belichtungskopfgehäuses angeordnet sind.From the EP 1 520 718 A1 is an "inkjet recording apparatus" known, comprising an exposure head for exposure of printed images and an exposure head housing in which a reflector is at least partially surrounded lamp is arranged, which emits in operation radiation, which passed through the reflectors on a printable with light-curing ink image plane wherein elliptical reflectors and planar reflectors are mounted in the exposure head housing and the planar reflectors are disposed on opposite side walls of the exposure head housing.

Aus der US 6 649 921 B1 ist bekannt eine Lampe zumindest teilweise umgeben von Reflektoren anzuordnen, wobei die Lampe bei Betrieb Strahlung emittiert, wobei elliptische Reflektoren sowie ebene Reflektoren vorgesehen sind und die ebenen Reflektoren auf einander gegenüberliegenden Seitenwänden des Belichtungskopfgehäuses angeordnet sind.From the US 6 649 921 B1 It is known to arrange a lamp at least partially surrounded by reflectors, wherein the lamp emits radiation during operation, wherein elliptical reflectors and planar reflectors are provided and the planar reflectors are arranged on opposite side walls of the exposure head housing.

Der Erfindung liegt ausgehend von diesem Technikstand daher die Aufgabe zugrunde, einen Drucker mit einem Belichtungskopf zur Aushärtung von lichthärtender Tinte zu offenbaren, der als Auftischgerät für Büroanwendungen geeignet ist und bei dem der fokussierte Strahlbereich am Rand in Druckzeilenrichtung in der Fokusebene verstärkt wird.It is an object of the present invention to disclose a printer having an exposure head for curing light-curing ink, which is suitable as a tabletop device for office applications and in which the focused beam area on the Edge is strengthened in the print plane direction in the focal plane.

Diese Aufgabe wird erfindungsgemäß durch einen Drucker mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a printer with the features of claim 1.

Der erfindungsgemäße Drucker weist einen Belichtungskopf zur Belichtung von Druckbildern mit einem Belichtungskopfgehäuse auf, in dem eine von Reflektoren zumindest teilweise umgebene Lampe angeordnet ist, die bei Betrieb Strahlung emittiert, welche durch die Reflektoren auf eine mit lichtaushärtender Tinte bedruckbare Druckbildebene geleitet wird. Damit derartige Drucker als Auftischdrucker verwendet werden können, ist es wichtig, dass die von der Lampe auf die Druckbildebene emittierte Strahlung in ihrer Intensität groß genug ist, um die Tinte auszuhärten und dass die von der Lampe des Belichtungskopfs ausgesendete Verlustwärme mit einem in einen Auftischdrucker integrierbaren Kühler aus dem Belichtungskopf und aus dem Drucker bspw. in die Umgebung abgeführt werden kann.The printer according to the invention has an exposure head for exposure of printed images with an exposure head housing, in which a lamp is at least partially surrounded by reflectors emitted during operation radiation, which is passed through the reflectors on a light-curing ink printable image plane. In order for such printers to be used as tabletop printers, it is important that the radiation emitted by the lamp to the image plane be sufficiently intense to cure the ink and that the heat loss emitted by the lamp of the exposure head be integrated into a desktop printer Cooler from the exposure head and from the printer, for example, can be discharged into the environment.

Diese Vorteile werden erfindungsgemäß durch eine Anordnung von elliptischen Reflektoren sowie ebenen Reflektoren in dem Belichtungskopfgehäuse erreicht.These advantages are achieved according to the invention by an arrangement of elliptical reflectors and planar reflectors in the exposure head housing.

Denn durch die Kombination der geometrisch unterschiedlichen Reflektoren wird ein weit aus größerer Teil der von der Lampe in alle Richtungen emittierte Strahlung auf die Druckbildebene geleitet als allein durch elliptische Reflektoren. Dies geschieht einerseits dadurch, dass die ebenen Reflektoren auf einander gegenüberliegenden Seitenwänden des Belichtungskopfgehäuses angeordnet und als Kreuzreflektoren ausgebildet sind.Because of the combination of the geometrically different reflectors, a far greater part of the radiation emitted by the lamp in all directions is directed to the print image plane than solely by elliptical reflectors. This is done on the one hand by the fact that the planar reflectors are arranged on opposite side walls of the exposure head housing and designed as cross reflectors.

Hierdurch wird der typischerweise gegenüber den Mittenbereich mit einer geringeren Strahlungsintensität ausgebildete Randbereich von der Druckbildebene intensiver bestrahlt.As a result, the edge region, which is typically formed with a lower radiation intensity with respect to the center region, is irradiated more intensely by the printing image plane.

Dabei sind die Reflektionsflächen der Kreuzreflektoren so gegen die Hauptstrahlrichtung der Lampe geneigt, dass der fokussierte Strahlbereich am Rand in Druckzeilenrichtung durch die reflektierte Abbildung der Lampe in der Fokusebene verstärkt wird.In this case, the reflection surfaces of the cross reflectors are inclined relative to the main beam direction of the lamp, that the focused beam area is reinforced at the edge in the print line direction by the reflected image of the lamp in the focal plane.

Um den Randbereich des beleuchteten Druckbildabschnitts noch zu vergrößern, ist vorgesehen, dass die Kreuzreflektoren, von der Lampe in Richtung der Druckbildebene betrachtet, trichterartig auseinander laufen. Durch die Vergrößerung des beleuchteten Druckbildabschnitts wird die zur Aushärtung der Tinte benötigte Verweilzeit verringert. Deshalb kann die Druckgeschwindigkeit des Druckers erhöht werden.In order to increase the edge area of the illuminated print image section, it is provided that the cross reflectors, viewed from the lamp in the direction of the print image plane, run apart like a funnel. By enlarging the illuminated print image section, the residence time required to cure the ink is reduced. Therefore, the printing speed of the printer can be increased.

Zur Erhöhung der Strahlungsintensität ist es auch möglich, dass die ebenen Reflektoren auf der zu der Druckbildebene gegenüberliegenden Seite der Lampe angeordnet und als Reflektorelemente ausgebildet sind.To increase the radiation intensity, it is also possible that the planar reflectors are arranged on the opposite side of the lamp to the printing image plane and are designed as reflector elements.

Durch diese Reflektorelemente wird die von der Lampe in zur Druckbildebene entgegengesetzter Richtung emittierte Strahlung auf die Druckbildebene geleitet. Hierdurch wird neben der Erhöhung der Strahlungsintensität auf der Druckbildebene erreicht, dass die Erwärmung des Belichtungskopfgehäuses durch die Strahlung der Lampe verringert wird.By means of these reflector elements, the radiation emitted by the lamp in the direction opposite to the printing image plane is directed onto the printing image plane. In this way, in addition to the increase of the radiation intensity on the print image plane is achieved that the heating of the exposure head housing is reduced by the radiation of the lamp.

Gemäß einer weiteren Ausführungsform ist bevorzugt, dass der Drucker einen Belichtungskopf zur Belichtung von Druckbildern und einen Belichtungskopfgehäuse aufweist, in dem eine von Reflektoren zumindest teilweise umgebene Lampe angeordnet ist, die bei Betrieb Strahlung emittiert, welche durch die Reflektoren auf eine mit lichtaushärtender Tinte bedruckbaren Druckbildebene geleitet wird. Bei diesem Drucker ist erfindungsgemäß vorgesehen, dass eine Gebläseeinheit über mindestens einen Luftleitkanal mit dem Belichtungskopf verbunden ist, wobei der Luftleitkanal in einen Kühlluftraum zwischen den Reflektoren und den Seitenwänden des Belichtungskopfgehäuses mündet.According to a further embodiment, it is preferred that the printer has an exposure head for exposing printed images and an exposure head housing in which a lamp is at least partially surrounded by reflectors which emits radiation during operation, which by the reflectors on a printable with a light-curing ink image plane is directed. In this printer, the invention provides that a fan unit is connected via at least one air duct with the exposure head, wherein the air duct opens into a cooling air space between the reflectors and the side walls of the exposure head housing.

Durch diesen Aufbau befindet sich der Leuchtkörper der Lampe in einem von den Reflektoren isolierten Innenraum. Dadurch wird ein optimaler Betriebszustand der Lampe erreicht, was sich auf die Lebensdauer positiv auswirkt. Zusätzlich wird eine intensive Kühlung des Beleuchtungskopfes auf kleinsten Raum erreicht.As a result of this construction, the luminous element of the lamp is located in an interior space insulated from the reflectors. As a result, an optimal operating state of the lamp is achieved, which has a positive effect on the life. In addition, intensive cooling of the lighting head is achieved in the smallest space.

Nach einer weiteren Ausführung der Erfindung ist die Lampe in dem Belichtungskopfgehäuse über mindestens eine Lampenfassung befestigt, wobei die Lampenfassung in den Luftleitkanal ragt. Hierdurch wird die Lampenfassung effektiv im Luftstrom gekühlt und die Wärmeableitung auf das Belichtungskopfgehäuse wirksam reduziert. Diese Luftführung ist besonders bei Verwendung einer Quecksilberdampflampe mit Betriebstemperaturen von ca. 900°C wichtig, um zu verhindern, dass das Belichtungskopfgehäuse thermisch geschädigt wird.According to a further embodiment of the invention, the lamp is mounted in the exposure head housing via at least one lamp socket, the lamp socket protruding into the air duct. This effectively cools the lampholder in the airflow and effectively reduces heat dissipation to the exposure head housing. This air guide is particularly important when using a mercury vapor lamp with operating temperatures of about 900 ° C, to prevent the exposure head housing is thermally damaged.

Zur Abführung von aufgeheizter Luft bzw. der Verlustwärme aus dem Belichtungskopf ist ein mit dem Belichtungskopf verbundener Abluftkanal mit einer Eingangs- und Ausgangsöffnung vorgesehen. Zweckmäßiger Weise ist vorgesehen, dass die Eingangsöffnung des Abluftkanals zwischen den Seitenwänden des Belichtungskopfgehäuses und den Reflektoren angeordnet ist. Eine besonders vorteilhafte Weiterbildung der Erfindung sieht vor, dass im Druckergehäuse eine Ausblasöffnung zur Abführung von aufgeheizter Abluft vorgesehen ist, welche vorzugsweise korrespondierend zu der Ausgangsöffnung des Luftkanals von dem Belichtungskopfgehäuse angeordnet ist. Hierdurch wird erreicht, dass die im Belichtungskopfgehäuse von seiner Lampe in ihrem Betrieb produzierte Verlustwärme über ein Kühlmedium wie Luft bspw. in die Umgebung transportiert werden kann.For the discharge of heated air or the heat loss from the exposure head connected to the exposure head exhaust duct is provided with an input and output port. Appropriately, it is provided that the inlet opening of the exhaust duct between the side walls of the Exposure head housing and the reflectors is arranged. A particularly advantageous embodiment of the invention provides that in the printer housing a blow-out opening for discharging heated exhaust air is provided, which is preferably arranged corresponding to the outlet opening of the air channel of the exposure head housing. This ensures that the loss heat produced in the exposure head housing by its lamp in its operation can be transported via a cooling medium such as air, for example, into the environment.

Die Erfindung wird nachstehend anhand eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnung näher erläutert.The invention will be explained in more detail below with reference to an embodiment with reference to the drawing.

Es zeigen

Fig. 1
ein Ausführungsbeispiel des Belichtungskopfes in perspektivischer Ansicht,
Fig. 2
eine perspektivische Ansicht auf die Lichtaustrittsseite des Belichtungskopfes,
Fig. 3
einen Querschnitt durch den Belichtungskopf mit seiner Strahlenführung und seiner Kühlluftführung,
Fig. 3A
einen projizierten Querschnitt des Belichtungskopfes der Fig.3,
Fig. 4
einen Querschnitt durch den Belichtungskopf mit der Kühlluftführung und einem Teil der reflektierten Strahlung, und
Show it
Fig. 1
an embodiment of the exposure head in perspective view,
Fig. 2
a perspective view of the light exit side of the exposure head,
Fig. 3
a cross section through the exposure head with its beam guidance and its cooling air flow,
Fig. 3A
a projected cross section of the exposure head of Figure 3 .
Fig. 4
a cross section through the exposure head with the cooling air duct and a portion of the reflected radiation, and

Fig. 4A den Ellipsenträger in 2 Ansichten. Fig. 4A the ellipse carrier in 2 views.

Die Erfindung betrifft einen Drucker, vorzugsweise einen Serialdrucker mit einem Druckergehäuse, in dem ein Belichtungskopf montiert ist. Der Belichtungskopf ist das wesentliche Bauteil der Erfindung. Deshalb zeigen die Figuren lediglich den Belichtungskopf und nicht den Drucker.The invention relates to a printer, preferably a serial printer with a printer housing, in which an exposure head is mounted. The exposure head is the essential component of the invention. Therefore, the figures show only the exposure head and not the printer.

Gemäß der perspektivischen Ansicht nach Fig.1 umfasst der Belichtungskopf ein Belichtungskopfgehäuse mit Winkelstücken (1, 2). Auf die Winkelstücke (1, 2) sind eine Leiterplatte (3) mit Stecker (4) und ein als Gebläseeinheit ausgebildeter Ventilator (10) mit Filter (5) aufgesetzt. Seitlich an die beiden Winkelstücke (1, 2) sind identische Abluftkanäle (6, 7) angebracht, die entfernbare Segmente (8, 9) aufweisen. Durch wechselseitiges Entfernen der Segmente (8, 9) in den Abluftkanälen (6, 7) entstehen Ausgangsöffnungen, durch die in dem Belichtungskopf aufgeheizte Abluft (44) gezielt einseitig aus dem Belichtungskopfgehäuse geblasen werden kann.
Wenigstens eine dieser Ausgangsöffnungen steht in Strömungsverbindung mit einer korrespondierend in dem Druckergehäuse vorgesehener Ausblasöffnung, um die aufgeheizte Abluft aus dem Drucker, bspw. in die Umgebung, zu befördern.
In dem Druckergehäuse sind als Führungsmittel für den Belichtungskopf und einen Druckerkopf mit lichthärtender Tinte Schlitten oder Schienen montiert, über die der Belichtungskopf und der Druckerkopf beim Druckvorgang des Druckers, über einen Antrieb gesteuert, traversierend zwischen zwei seitlichen Endstellungen bewegt wird. Um eine gute Schalldämpfung durch das Druckergehäuse zu erreichen und dennoch die erhitzte Abluft abführen zu können, weist das Druckergehäuse lediglich eine Ausblasöffnung auf. Die Ausblasöffnung des Druckergehäuses und die Ausgangsöffnung des Abluftkanals (6, 7) sind derart zueinander angeordnet, dass die Öffnungen in einer Endstellung des Belichtungskopfes in Strömungsverbindung stehen. In dieser Stellung wird der Belichtungskopf beim Drucken kurz gestoppt und die erhitzte Abluft aus dem Druckergehäuse geblasen.According to the perspective view Fig.1 The exposure head comprises an exposure head housing with elbows (1, 2). On the angle pieces (1, 2) a printed circuit board (3) with plug (4) and designed as a fan unit fan (10) with filter (5) are placed. Side of the two angle pieces (1, 2) identical exhaust air ducts (6, 7) are mounted, the removable segments (8, 9) have. By mutual removal of the segments (8, 9) in the exhaust air ducts (6, 7) arise output openings through which heated in the exposure head exhaust air (44) can be selectively blown on one side from the exposure head housing.
At least one of these outlet openings is in fluid communication with a correspondingly provided in the printer housing discharge opening to convey the heated exhaust air from the printer, eg. In the environment.
In the printer housing are mounted as a guide means for the exposure head and a printer head with light-curing ink carriage or rails over which the exposure head and the printer head during the printing process of the printer, controlled by a drive, traversing between two lateral end positions is moved. In order to achieve a good sound attenuation by the printer housing and still be able to dissipate the heated exhaust air, the printer housing has only one exhaust opening. The discharge opening of the printer housing and the outlet opening of the exhaust air duct (6, 7) are arranged relative to one another such that the openings are in flow connection in an end position of the exposure head. In this position, the exposure head is briefly stopped during printing and the heated exhaust air is blown out of the printer housing.

Gemäß der perspektivischen Ansicht auf die Lichtaustrittsseite des Belichtungskopfes in Fig. 2 enthält der Belichtungskopf zusätzlich elliptische Reflektoren (11, 12) sowie Kreuzreflektoren (13, 14). Die Lichtaustrittsöffnung wird durch eine Glasscheibe (15) abgedeckt, die von den Federelementen (16, 17) im Strahlenschatten liegend gesichert wird.
Eine Lampe (18) des Belichtungskopfes ist in dieser Ansicht nicht gezeigt.According to the perspective view of the light exit side of the exposure head in Fig. 2 the exposure head additionally contains elliptical reflectors (11, 12) and cross reflectors (13, 14). The light exit opening is covered by a glass pane (15), which is secured by the spring elements (16, 17) lying in the beam shadow.
A lamp (18) of the exposure head is not shown in this view.

Gemäß Fig. 3 und Fig. 3A wird das Belichtungskopfgehäuse im Wesentlichen durch die zwei gleichartigen Winkelstücke (1, 2) gebildet, die miteinander fest verbunden sind. In den durch die Winkelstücke (1, 2) gebildeten Innenraum werden mit einem Abstand (19) zwei Ellipsenträger (20, 21) eingesetzt, die je zwei ellipsenförmig verlaufende Aussparungen (22, 23) enthalten.
In diese Aussparungen (22, 23) werden die elliptischen Reflektoren (11, 12) von der Lichtaustrittsseite her eingeschoben. Da die Aussparungen (22, 23) nur geringfügig breiter sind als die Dicke der elliptischen Reflektoren (11, 12), besitzen diese nach der Montage die exakte berechnete geometrische Form an ihrer Reflektoroberfläche.
Zur Halterung und zur Stromzuführung sind an mit 24 und 25 bezeichneten abgewinkelten Innenlappen der Winkelstücke (1, 2) beidseitig Lampenfassungen (26, 27) angebracht. Oberhalb der Lampe (18) befindet sich ein Schutzschild (28), das die Streustrahlung der Lampen (18) nach oben hin abschirmt und zusätzlich die beiden Innenlappen (24,25) der Winkelstücke (1, 2) gegen Kräfte von Fassungsfedern (29, 30) stabilisiert.
Oberhalb der Winkelstücke (1,2) ist die Leiterplatte (3) mit dem Stecker (4) zur elektrischen Versorgung des Belichtungskopfes vorgesehen, die von dem Ventilator (10) mit dem vorgeschalteten Luftfilter (5) abgedeckt wird.
Die Lichtaustrittsöffnung des Belichtungskopfes ist mit der Glasscheibe (15) gegen Verschmutzung und Beschädigung abgedeckt. Die Glasscheibe (15) wird mit Federelementen (16, 17) gehalten, die im Strahlungsschatten hinter einer gebildeten Abwinklung (31, 32) der elliptischen Reflektoren (1, 2) eingerastet sind. Dadurch wird ein Ausglühen der Federelemente im direkten Strahlengang vermieden.
Die Kühlluftführung im Belichtungskopf erfolgt dreidimensional und ist für eine Seite durch die gestrichelte Linie (44) dargestellt. Auf der anderen Seite erfolgt die Kühlluftführung spiegelbildlich.According to Fig. 3 and Fig. 3A the exposure head housing is essentially formed by the two identical angle pieces (1, 2), which are firmly connected to each other. In the space formed by the angle pieces (1, 2), two ellipse carriers (20, 21) are inserted at a distance (19), each containing two elliptical recesses (22, 23).
In these recesses (22, 23), the elliptical reflectors (11, 12) of the Inserted light exit side ago. Since the recesses (22, 23) are only slightly wider than the thickness of the elliptical reflectors (11, 12), these have after mounting the exact calculated geometric shape on its reflector surface.
For mounting and power supply are designated at 24 and 25 angled inner lobes of the angle pieces (1, 2) on both sides lamp sockets (26, 27) attached. Above the lamp (18) is a protective shield (28) which shields the scattered radiation of the lamps (18) towards the top and in addition the two inner tabs (24,25) of the angle pieces (1, 2) against forces of socket springs (29, 30) stabilized.
Above the angle pieces (1,2), the printed circuit board (3) with the plug (4) for the electrical supply of the exposure head is provided, which is covered by the fan (10) with the upstream air filter (5).
The light exit opening of the exposure head is covered with the glass pane (15) against contamination and damage. The glass pane (15) is held by spring elements (16, 17), which are engaged in the radiation shadow behind an angled bend (31, 32) of the elliptical reflectors (1, 2). As a result, annealing of the spring elements in the direct beam path is avoided.
The cooling air flow in the exposure head is three-dimensional and is shown for one side by the dashed line (44). On the other hand, the cooling air duct is mirror-inverted.

Gemäß Fig. 4 und Fig. 4A strahlt die Lampe (18) an ihrem zylinderförmigen Mantel allseitig gleichmäßig Licht ab. Sie ist in einem ersten Brennpunkt (34) der elliptischen Reflektoren (11, 12) angeordnet. In einem zweiten Brennpunkt (35) befindet sich eine Druckbildebene (40) des Druckers.
Oberhalb der Lampe (18) weisen die Kreuzreflektoren (13, 14) einen als Reflektorelemente ausgebildeten Bereich (36, 37) auf. Dieser ist derart zur Hauptstrahlachse (38) geneigt, dass die reflektierte Strahlung (49) weitgehend an dem Leuchtkörper (39) der Lampe (18) vorbei gestrahlt wird, um diese nicht unnötig zu erhitzen und um die reflektierte Strahlung (49) zusätzlich zur Belichtung der Druckbildebene (40) zu nutzen.According to Fig. 4 and Fig. 4A the lamp (18) emits light uniformly on all sides on its cylindrical jacket. It is arranged in a first focal point (34) of the elliptical reflectors (11, 12). In a second focal point (35) is a printing image plane (40) of the printer.
Above the lamp (18), the cross reflectors (13, 14) have a region (36, 37) formed as reflector elements. This is inclined to the main beam axis (38) such that the reflected radiation (49) is largely radiated past the luminous element (39) of the lamp (18) so as not to unnecessarily heat it and to the reflected radiation (49) in addition to the exposure the print image plane (40) to use.

Das von dem Leuchtkörper (39) der Lampe (18) radial abgestrahlte Licht wird durch die elliptischen Reflektoren (11, 12) in einem Bereich (45) der Druckbildebene (40) fokussiert und damit gegenüber der direkten Strahlung der Lampe (18) um ein Vielfaches verstärkt.The light radiated radially by the luminous element (39) of the lamp (18) is focused by the elliptical reflectors (11, 12) in a region (45) of the printing image plane (40) and thus by a direct comparison with the direct radiation of the lamp (18) Multiple amplified.

Gemäß Fig.3 ist dieser Bereich (45) mit höherer Bestrahlungsdichte in der Richtung der LängsAchse der Lampe (18) gemessen nur so lang, wie der Leuchtkörper (39) der Lampe (18).
Um das Druckbild mit möglichst hoher Druckgeschwindigkeit aushärten zu können, ist eine möglichst lange Belichtungszone mit entsprechender Belichtungsstärke in der Druckbildebene (40) in Druckrichtung vorteilhaft. Um dieses zu erreichen, sind die Kreuzreflektoren (13, 14) in dem Maße schräg zur Haupt-Strahlenrichtung (38) der Lampe (18) geneigt, dass die reflektierten Abbildungen (46) des Leuchtkörpers (39) durch die Kreuzreflektoren (13, 14) jeweils im Anschluss an den durch die elliptischen Reflektoren (11, 12) erzeugten Bereich (45) mit hoher Lichtintensität auf der Druckbildebene (40) abgebildet werden. Dadurch entsteht eine Zone (45, 46) hoher Strahlungsdichte, die sich über die gesamte Lichtaustrittsbreite des Belichtungskopfes erstreckt. Um den Aushärteprozess der Tinte nach dem Drucken zu beschleunigen und ein Verlaufen des Druckbildes zu vermeiden, ist die Druckbildebene nur 1 bis 2mm vom Beleuchtungskopf entfernt angeordnet.According to Figure 3 For example, this region (45) with higher irradiance in the direction of the longitudinal axis of the lamp (18) is only as long as the luminous element (39) of the lamp (18).
To be able to cure the printed image with the highest possible printing speed, the longest possible exposure zone with a corresponding exposure intensity in the printing image plane (40) in the printing direction is advantageous. To achieve this, the cross reflectors (13, 14) are inclined obliquely to the main beam direction (38) of the lamp (18) to the extent that the reflected images (46) of the filament (39) through the cross reflectors (13, 14 ) are respectively imaged on the printing image plane (40) following the area (45) produced by the elliptical reflectors (11, 12) with high light intensity. This results in a zone (45, 46) of high radiation density, which extends over the entire light exit width of the exposure head. In order to accelerate the curing process of the ink after printing and to prevent the print image from bleeding, the image plane is only 1 to 2 mm away from the illumination head.

Der Belichtungskopf und die Gebläseeinheit sind über einen Luftleitkanal miteinander verbunden, welcher entlang der mit 44 bezeichneten gestrichelten Linie geführt ist. Der Luftleitkanal ist an dem Leuchtkörper (39) der Lampe (18) vorbeigeführt, wobei die Lampenfassung (26, 27) in den Luftleitkanal ragt. Dieser mündet in einem Kühlluftraum (48) zwischen den Reflektoren (11,12,13,14) und den Seitenwänden des Belichtungskopfgehäuses und steht hierüber mit dem Abluftkanal (7, 8) in Strömungsverbindung.The exposure head and the blower unit are connected to each other via an air duct, which is guided along the dashed line designated 44. The air duct is guided past the luminous element (39) of the lamp (18), with the lamp socket (26, 27) protruding into the air duct. This opens into a cooling air space (48) between the reflectors (11,12,13,14) and the side walls of the exposure head housing and is thereby in communication with the exhaust air duct (7, 8).

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Winkelstückeelbows
22
Winkelstückeelbows
33
Leiterplattecircuit board
44
Steckerplug
55
Filterfilter
66
Abluftkanalexhaust duct
77
Abluftkanalexhaust duct
88th
Entfernbares SegmentRemovable segment
99
Entfernbares SegmentRemovable segment
1010
Ventilatorfan
1111
Ellipsenförmiger ReflektorElliptical reflector
1212
Ellipsenförmiger ReflektorElliptical reflector
1313
Kreuzreflektorcross reflector
1414
Kreuzreflektorcross reflector
1515
Glasscheibepane
1616
Blattfederleaf spring
1717
Blattfederleaf spring
1818
Lampelamp
1919
Abstanddistance
2020
Ellipsenträgerellipse carrier
2121
Ellipsenträgerellipse carrier
2222
Ellipsenförmige AussparungElliptical recess
2323
Ellipsenförmige AussparungElliptical recess
2424
Abgewinkelter InnenlappenAngled inner flap
2525
Abgewinkelter InnenlappenAngled inner flap
2626
Lampenfassunglamp socket
2727
Lampenfassunglamp socket
2828
Schutzschildshield
2929
Feder in LampenfassungSpring in lamp socket
3030
Feder in LampenfassungSpring in lamp socket
3131
Abwinkelung der KreuzreflektorenAngling the cross reflectors
3232
Abwinkelung der KreuzreflektorenAngling the cross reflectors
3434
Brennpunktfocus
3535
Zweiter BrennpunktSecond focal point
3636
Reflektorelementreflector element
3737
Reflektorelementreflector element
3838
Hauptstrahlenrichtung der LampeMain beam direction of the lamp
3939
Leuchtkörperilluminant
4040
DruckbildebenePrint image plane
4141
Lampenachselamp axis
4242
Lampensockellamp base
4343
Lampensockellamp base
4444
Kühlluftcooling air
4545
Bereich hoher StrahlungsdichteHigh radiation density area
4646
Reflektierte Abbildung des LeuchtkörpersReflected illustration of the filament
4747
ReflektorinnenraumReflector interior
4848
KühlluftraumCooling air space
4949
Teil der reflektierten StrahlungPart of the reflected radiation
5050
Ankerartige Aussparung im SchutzschildAnchor-like recess in the protective shield

Claims (14)

  1. A printer, in particular a serial printer, comprising an imaging head for imaging printed images and an imaging head housing in which a lamp (18) that is at least in part encompassed by reflectors (11, 12, 13, 14, 36, 37) is arranged that in operation emits radiation which by means of the reflectors (11, 12, 13, 14, 36, 37) is guided to a printable image plane (40) comprising light-curable ink, wherein elliptic reflectors (11, 12) and planar reflectors (13, 14, 36, 37) are installed in the imaging head housing, the lamp (18) is positioned in a first focal point (34) of the elliptic reflectors (11, 12), and the elliptic reflectors (11, 12), the lamp (18) and the printed image plane (40) are arranged relative to each other in such a manner that a second focal point (35) of the elliptic reflectors (11, 12) is situated in the region of the printed image plane (40),
    characterised in that
    the planar reflectors are arranged on opposite sidewalls of the imaging head housing and are designed as cross reflectors (13, 14) that relative to each other extend symmetrically on a plane that is arranged so as to be perpendicular to the printed image plane (40), wherein the elliptic reflectors (11, 12) comprise a symmetry plane that is arranged so as to be orthogonal to the printed image plane (40) and to the symmetry plane of the cross reflectors (13, 14).
  2. The printer according to claim 1, characterised in that the cross reflectors (13, 14) extend from the lamp (18) in the direction of the printed image plane (40) so as to be inclined towards each other.
  3. The printer according to one of the preceding claims, characterised in that the cross reflectors (13, 14) extend apart from each other in a funnel-shaped manner when viewed from the lamp (18) in the direction of the printed image plane (40).
  4. The printer according to any one of the preceding claims, characterised in that planar reflector elements (36, 37) are arranged on the side of the lamp (18), which side is opposite the printed image plane (40).
  5. The printer according to any one of the preceding claims, characterised in that the lamp (18) is designed as a mercury vapour lamp comprising a tubular geometry.
  6. The printer according to claim 4, characterised in that the planar reflector elements (36, 37) are arranged so as to be inclined in cross direction of the lamp (18).
  7. The printer according to one of claims 4 and 6, characterised in that starting from the elliptic reflectors (11, 12) and/or cross reflectors (13, 14), the reflector elements extend in cross direction of the lamp (18).
  8. The printer according to any one of the preceding claims, characterised in that a blower unit is connected to the imaging head by way of at least one air duct, wherein the air duct leads to a cooling air space (48) between the reflectors (11, 12, 13, 14) and the sidewalls of the imaging head housing.
  9. The printer according to claim 8, characterised in that the air duct leads past the luminary (39) of the lamp (18).
  10. The printer according to claim 9, characterised in that the lamp (18) comprises at least one lamp socket (26, 27) for attachment in the imaging head, and in that the lamp socket (26, 27) projects into the air duct.
  11. The printer according to any one of claims 8 to 10, characterised in that an air outlet duct (6, 7) comprising an inlet opening and outlet opening for removing heated air is connected to the imaging head.
  12. The printer according to claim 11, characterised in that the inlet opening of the air outlet duct (6, 7) is provided between the sidewalls of the imaging head housing and the reflectors (11, 12, 13, 14).
  13. The printer according to claim 12, characterised in that a printer housing is provided and in the printer housing a discharge opening for removing heated air is provided, which discharge opening is arranged so as to correspond to the outlet opening.
  14. The printer according to claim 13, characterised in that, in the printer, guidance means for traversing movements of the imaging head are provided, wherein the outlet opening of the air outlet duct (6, 7) to the discharge opening of the printer housing is arranged so as to correspond to a position of the imaging head.
EP07722749A 2006-01-20 2007-01-09 Printer comprising an exposure head Expired - Fee Related EP1976704B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09007261A EP2093067B1 (en) 2006-01-20 2007-01-09 Printer with an exposure head

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006003057A DE102006003057A1 (en) 2006-01-20 2006-01-20 Ink drying lamp especially for serial printer has an improved reflector with elliptical and plane surfaces to focus onto the printed area
PCT/EP2007/000113 WO2007087958A2 (en) 2006-01-20 2007-01-09 Printer comprising an exposure head

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP09007261A Division EP2093067B1 (en) 2006-01-20 2007-01-09 Printer with an exposure head
EP09007261A Division-Into EP2093067B1 (en) 2006-01-20 2007-01-09 Printer with an exposure head

Publications (2)

Publication Number Publication Date
EP1976704A2 EP1976704A2 (en) 2008-10-08
EP1976704B1 true EP1976704B1 (en) 2012-10-24

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EP09007261A Expired - Fee Related EP2093067B1 (en) 2006-01-20 2007-01-09 Printer with an exposure head
EP07722749A Expired - Fee Related EP1976704B1 (en) 2006-01-20 2007-01-09 Printer comprising an exposure head

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US (1) US8016407B2 (en)
EP (2) EP2093067B1 (en)
JP (1) JP5162472B2 (en)
CN (1) CN101370668B (en)
DE (1) DE102006003057A1 (en)
ES (2) ES2395562T3 (en)
WO (1) WO2007087958A2 (en)

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GB2468702A (en) * 2009-03-19 2010-09-22 Gew Ink curing apparatus with integrally formed reflector and cooling means
EP2952250B1 (en) * 2013-01-30 2018-10-31 Kyocera Corporation Light irradiating device and printing device
JP6111785B2 (en) * 2013-03-28 2017-04-12 セイコーエプソン株式会社 Liquid ejection device

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US8016407B2 (en) 2011-09-13
EP2093067A2 (en) 2009-08-26
WO2007087958A3 (en) 2007-11-15
ES2395562T3 (en) 2013-02-13
ES2394600T3 (en) 2013-02-04
EP2093067A3 (en) 2010-10-27
JP2009523627A (en) 2009-06-25
WO2007087958A2 (en) 2007-08-09
JP5162472B2 (en) 2013-03-13
EP2093067B1 (en) 2012-10-24
CN101370668B (en) 2012-11-07
CN101370668A (en) 2009-02-18
EP1976704A2 (en) 2008-10-08
DE102006003057A1 (en) 2007-07-26
US20100220171A1 (en) 2010-09-02

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