EP1454743B1 - Device for adjusting the focal point of an exposure head in a plate exposure system - Google Patents
Device for adjusting the focal point of an exposure head in a plate exposure system Download PDFInfo
- Publication number
- EP1454743B1 EP1454743B1 EP03022703A EP03022703A EP1454743B1 EP 1454743 B1 EP1454743 B1 EP 1454743B1 EP 03022703 A EP03022703 A EP 03022703A EP 03022703 A EP03022703 A EP 03022703A EP 1454743 B1 EP1454743 B1 EP 1454743B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- exposure
- drum
- plate
- carrier
- printing
- 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
Links
- 238000007639 printing Methods 0.000 claims description 34
- 239000000463 material Substances 0.000 claims description 10
- 239000000976 ink Substances 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000007649 pad printing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C1/00—Forme preparation
- B41C1/10—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme
- B41C1/1083—Mechanical aspects of off-press plate preparation
Definitions
- the invention relates to the field of electronic reproduction technology and relates to an apparatus for adjusting the focus of the exposure heads in an imagesetter for recording artwork on printing plates.
- print templates are created for printed pages containing all the elements to be printed, such as text, graphics and images.
- a separate print template is created for each ink, containing all the elements printed in each color.
- these are the inks cyan, magenta, yellow and black (CMYK).
- CMLK magenta, yellow and black
- the printed originals separated by printing inks are also called color separations.
- the artwork is usually rasterized and exposed to film with a setter, which then produces printing plates for high-volume printing.
- the print templates can be exposed directly on printing plates in special exposure devices or they are transferred directly as digital data to a digital printing press. There, the print data are then exposed to printing plates, for example, with an integrated into the printing unit exposure unit before immediately after the pad printing begins.
- the artwork is electronically reproduced. Images are scanned in a color scanner and stored in the form of digital data. Texts are created with word processing programs and graphics with drawing programs. With a layout program the picture, text and graphic elements are put together to a printed page. The data of several printed pages are combined with the data of further elements, such as registration marks, crop marks and folding marks as well as print control fields, to print pattern for a printed sheet. As data formats for describing the print templates are now largely the page description languages Postscript and PDF (Portable Document Format). The Postscript or PDF data are converted before the recording of the artwork in a raster image processor (RIP) in the rasterized color separations CMYK.
- RIP raster image processor
- a laser beam is generated by a laser diode, formed by optical means and focused on the recording material and deflected by a deflection system point and line by line over the recording material.
- recording devices that produce one or more bundles of laser beams to increase the exposure speed, e.g. with one or more laser diode arrays, and with each sweep of the recording material, several image lines of the printing plate simultaneously expose.
- the recording material may be on a drum (external drum imagesetter), in a cylindrical trough (internal drum imagesetter) or on a flat surface (flatbed imagesetter).
- the material to be exposed is mounted in the form of films or printing plates on a rotatably mounted drum.
- an exposure head is moved axially along the drum at a relatively short distance.
- the exposure head focuses one or more laser beams onto the drum surface which sweep the drum surface in the form of a narrow helical line.
- the depth of field of a laser beam in an external drum platesetter for printing plates is about 0.1 mm. Since the printing plates can have different plate thicknesses, such as in the range of 0.1 to 0.3 mm, a device is required with which the focus of the laser beams can be adjusted to the thickness of the printing plates suitable.
- the EP-A-0996277 discloses an apparatus for focusing adjustment of a plurality of exposure heads on a recording material in an imagesetter for recording masters according to claim 1, comprising an exposure drum for receiving the exposure material and an exposure head carrier comprising a wafer plate for receiving the exposure heads and a support base.
- a device for adjusting the position of a printing forme cylinder of a printing machine with respect to a scanning head is proposed.
- the positioning is achieved by a pivoting movement of the plate cylinder reached around an axis which is perpendicular to its longitudinal axis.
- the device is a solution when used inside a printing press since the printing forme cylinder is pivotally mounted for skew registration anyway and this device can be shared for positioning relative to the scanning head.
- an engraving head is described in an engraving machine for gravure cylinder, which is movably mounted on a leaf spring.
- For engraving the engraving head by means of a tilting movement to the gravure cylinder is adjustable and pivoted away.
- the object is achieved by a device according to claim 1.
- Fig. 1 shows the basic structure of an external drum imagesetter.
- An exposure drum 1 is rotatably mounted and can be offset with a rotary drive not shown in the direction of the rotation arrow 2 in a uniform rotational movement.
- On the exposure drum 1 an unexposed, rectangular printing plate 3 is stretched.
- the pressure plate 3 is clamped so that its front edge 4 contact pins 8, which are firmly connected to the exposure drum 1 and project beyond the surface of the exposure drum 1.
- a clamping strip 9 also presses the front edge 4 firmly on the surface of the exposure drum 1 and thereby fixes the front edge 4 of the printing plate 3.
- the printing plate 3 is flat by means of a in Fig.
- a plurality of exposure heads 11 arranged on a common exposure head carrier 16 are moved axially along the exposure drum 1 at a relatively short distance while the exposure drum 1 rotates.
- Each exposure head 11 focuses one or more laser beams 12 onto the drum surface which sweep the drum surface in the form of tight helical lines. In this way, one or more groups of image lines in the circumferential direction x are exposed to the recording material every drum revolution.
- the exposure head carrier 16 is moved in the feed direction y by means of a feed screw 13 with which it is positively connected and which is set in rotary motion by a feed drive 14.
- Fig. 1 shows as an example an imagesetter with two exposure heads 11, which are arranged in the axial direction at a distance A and each focus a bundle of laser beams 12 on the printing plate 3.
- the printing original 15 is thereby exposed simultaneously with two groups of helical lines, which cover the drum surface at an axial distance A.
- Fig. 2 shows the inventive device for focus adjustment of the exposure heads 11 in a perspective view.
- the exposure head support 16 consists of two parts, a support plate 20, on which the exposure heads 11 are mounted, and a support base 21, which runs on guide rails 22 and axially along the exposure drum 1 along the support plate 20 along with the support plate 20 in the y-direction is moved.
- the support plate 20 and the support base 21 are connected to the exposure drum 1 side facing by a hinge 23, the axis of rotation extends in the y direction.
- the hinge 23 allows a tilting movement of the support plate 20 to the rotation axis of the hinge 23, whereby the exposure heads 11 mounted on the support plate 20 are moved in the direction of the arrow 24 toward the exposure drum 1 to and from the exposure drum 1, respectively.
- the tilting movement of the support plate 20 is carried out, for example, with a drive which raises or lowers the rear, the exposure drum 1 facing away from the back of the support plate 20 in the direction of the arrow 25.
- the focus of the laser beams 12 for all the exposure heads 11 is adjusted optimally to the respective thickness of the printing plate 3 to be exposed before the beginning of the exposure.
- FIG. 2 shows a preferred embodiment for the drive.
- An eccentric shaft 26 is connected via support arms 27 with the back of the support plate 20.
- the eccentric shaft 26 is rotatably mounted in the support arms 27.
- the eccentric shaft 26 has at both ends depending on an eccentrically arranged pin 28, each carrying a roller 29 which rolls on the support base 21.
- Fig. 3a and Fig. 3b show this for an end of the eccentric shaft in an enlarged view.
- FIG. 3a shows the eccentric shaft 26 in its lowest position
- Fig. 3b shows her in her highest position.
- the height difference H is so dimensioned that the exposure heads 11, taking into account the lever lengths on both sides of the axis of the hinge 23, can be adjusted radially to the exposure drum 1 in a sufficiently large area.
- the rotary drive for the eccentric shaft 26 takes place, for example, with a stepper motor 30 via a toothed belt 31 (FIG. Fig. 2 ).
- the eccentric shaft 26 is still with a in Fig. 2 not shown means for determining a zero-angle position of the eccentric shaft 26 connected, which may for example consist of a slot provided with a slot and a light barrier.
- the zero-angle detector can be adjusted so that the exposure heads 11 are in the zero-angular position of the eccentric shaft 26 in a middle position of the radial feed area.
- the required radial delivery area is For example, 0.5 mm, and the delivery of the exposure heads 11 must be reproducibly done in very small steps.
- the exposure heads 11 are then moved to and from the exposure drum 1 by an accurately defined distance, depending on the direction of rotation.
- the required number of clock steps can be calculated beforehand from the lever ratios of the tilt drive.
- the radial feed can be measured once depending on the number of clock steps and stored in a table memory of the imagesetter, from where they are later provided as setting values during operation of the imagesetter.
- all mechanical tolerances of the tilting drive are detected and taken into account. Because of the tilting movement about the axis of the hinge 23, the exposure heads 11 do not move on a straight line radially to the exposure drum 1 but on a circular arc piece.
- the points at which the laser beams 12 strike the printing plate 3 shift somewhat in the circumferential direction of the exposure drum 1.
- this displacement can be compensated for by a corresponding shift in the timings at which the exposure of the image lines begins possible radial delivery of the exposure heads 11, the exposure of the artwork always begins at the same distance from the front edge 4 of the printing plate 3.
- Fig. 4 shows an alternative embodiment for a tilting drive.
- a stepper motor 40 which rotatably drives a pull spindle 41.
- a nut segment 42 engages positively, so that the nut segment 42 can be reciprocated horizontally when rotating the tensioning spindle 41.
- a roller 43 is fixed, which rolls on the carrier base 21 during the horizontal movement of the nut segment 42.
- a rocker arm 44 is rotatably mounted on the nut segment 42, the other end is rotatably connected to the back of the support plate 20. The length of the rocker arm 44 is dimensioned such that the horizontal movement of the nut segment 42 is converted into a vertical movement of the rear side of the support plate 20.
- Fig. 5 shows a preferred embodiment of the hinge 23 in an enlarged cross-sectional view of the end face of the exposure head carrier 16.
- the support plate 20 and the support base 21 are separated at its the exposure drum 1 side facing by a narrow gap 50.
- a spring plate 51 is placed, which is firmly clamped to the support plate 20 and the support base 21 by means of two clamping rails 52 and screws.
- the spring plate 51 is bent in the gap 50.
- the spring plate 51 is made of an elastic material, preferably spring steel. Since the tilt angle is only a fraction of a degree, the bending stress is very low.
- the spring plate 51 can be designed to extend over the entire axial length of the exposure head carrier 16.
Description
Die Erfindung bezieht sich auf das Gebiet der elektronischen Reproduktionstechnik und betrifft eine Vorrichtung zur Fokuseinstellung der Belichtungsköpfe in einem Belichter zur Aufzeichnung von Druckvorlagen auf Druckplatten.The invention relates to the field of electronic reproduction technology and relates to an apparatus for adjusting the focus of the exposure heads in an imagesetter for recording artwork on printing plates.
In der Reproduktionstechnik werden Druckvorlagen für Druckseiten erzeugt, die alle zu druckenden Elemente wie Texte, Grafiken und Bilder enthalten. Für den farbigen Druck wird für jede Druckfarbe eine separate Druckvorlage erzeugt, die alle Elemente enthält, die in der jeweiligen Farbe gedruckt werden. Für den Vierfarbdruck sind das die Druckfarben Cyan, Magenta, Gelb und Schwarz (CMYK). Die nach Druckfarben separierten Druckvorlagen werden auch Farbauszüge genannt. Die Druckvorlagen werden in der Regel gerastert und mit einem Belichter auf Filme belichtet, mit denen dann Druckplatten für das Drucken hoher Auflagen hergestellt werden. Alternativ können die Druckvorlagen in speziellen Belichtungsgeräten auch gleich auf Druckplatten belichtet werden oder sie werden direkt als digitale Daten an eine digitale Druckmaschine übergeben. Dort werden die Druckvorlagendaten dann beispielsweise mit einer in die Druckmaschine integrierten Belichtungseinheit auf Druckplatten belichtet, bevor unmittelbar anschließend der Auflagendruck beginnt.In reproduction technology, print templates are created for printed pages containing all the elements to be printed, such as text, graphics and images. For color printing, a separate print template is created for each ink, containing all the elements printed in each color. For four-color printing, these are the inks cyan, magenta, yellow and black (CMYK). The printed originals separated by printing inks are also called color separations. The artwork is usually rasterized and exposed to film with a setter, which then produces printing plates for high-volume printing. Alternatively, the print templates can be exposed directly on printing plates in special exposure devices or they are transferred directly as digital data to a digital printing press. There, the print data are then exposed to printing plates, for example, with an integrated into the printing unit exposure unit before immediately after the pad printing begins.
Nach dem heutigen Stand der Technik werden die Druckvorlagen elektronisch reproduziert. Dabei werden Bilder in einem Farbscanner gescannt und in Form von digitalen Daten gespeichert. Texte werden mit Textverarbeitungsprogrammen erzeugt und Grafiken mit Zeichenprogrammen. Mit einem Layoutprogramm werden die Bild-, Text- und Grafik-Elemente zu einer Druckseite zusammengestellt. Die Daten mehrerer Druckseiten werden mit den Daten weiterer Elemente, wie Passkreuzen, Schnittmarken und Falzmarken sowie Druckkontrollfeldern, zu Drückvorlagen für einen Druckbogen zusammengefasst. Als Datenformate zur Beschreibung der Druckvorlagen werden heute weitgehend die Seitenbeschreibungssprachen Postscript und PDF (Portable Document Format) verwendet. Die Postscript- bzw. PDF-Daten werden vor der Aufzeichnung der Druckvorlagen in einem Raster-Image-Prozessor (RIP) in die gerasterten Farbauszüge CMYK umgerechnet.According to the current state of the art, the artwork is electronically reproduced. Images are scanned in a color scanner and stored in the form of digital data. Texts are created with word processing programs and graphics with drawing programs. With a layout program the picture, text and graphic elements are put together to a printed page. The data of several printed pages are combined with the data of further elements, such as registration marks, crop marks and folding marks as well as print control fields, to print pattern for a printed sheet. As data formats for describing the print templates are now largely the page description languages Postscript and PDF (Portable Document Format). The Postscript or PDF data are converted before the recording of the artwork in a raster image processor (RIP) in the rasterized color separations CMYK.
In den Aufzeichnungsgeräten, die zur Belichtung von Druckvorlagen und Druckformen eingesetzt werden, wird beispielsweise ein Laserstrahl von einer Laserdiode erzeugt, durch optische Mittel geformt und auf das Aufzeichnungsmaterial fokussiert und mittels eines Ablenksystems punkt- und linienweise über das Aufzeichnungsmaterial abgelenkt. Es gibt auch Aufzeichnungsgeräte, die zur Erhöhung der Belichtungsgeschwindigkeit ein oder mehrere Bündel von Laserstrahlen erzeugen, z.B. mit einem bzw. mehreren Laserdiodenarrays, und mit jedem Überstreichen des Aufzeichnungsmaterials mehrere Bildlinien der Druckform gleichzeitig belichten. Das Aufzeichnungsmaterial kann sich auf einer Trommel befinden (Außentrommelbelichter), in einer zylindrischen Mulde (Innentrommelbelichter) oder auf einer ebenen Fläche (Flachbettbelichter). Bei einem Außentrommelbelichter wird das zu belichtende Material in Form von Filmen oder Druckplatten auf eine drehbar gelagerte Trommel montiert. Während die Trommel rotiert, wird ein Belichtungskopf in einem relativ kurzen Abstand axial an der Trommel entlang bewegt. Der Belichtungskopf fokussiert einen oder mehrere Laserstrahlen auf die Trommeloberfläche, die die Trommeloberfläche in Form einer engen Schraubenlinie überstreichen.In the recording apparatuses used for exposure of masters and printing forms, for example, a laser beam is generated by a laser diode, formed by optical means and focused on the recording material and deflected by a deflection system point and line by line over the recording material. There are also recording devices that produce one or more bundles of laser beams to increase the exposure speed, e.g. with one or more laser diode arrays, and with each sweep of the recording material, several image lines of the printing plate simultaneously expose. The recording material may be on a drum (external drum imagesetter), in a cylindrical trough (internal drum imagesetter) or on a flat surface (flatbed imagesetter). In an external drum imagesetter, the material to be exposed is mounted in the form of films or printing plates on a rotatably mounted drum. As the drum rotates, an exposure head is moved axially along the drum at a relatively short distance. The exposure head focuses one or more laser beams onto the drum surface which sweep the drum surface in the form of a narrow helical line.
Der Tiefenschärfebereich eines Laserstrahls in einem Außentrommelbelichter für Druckplatten beträgt etwa 0,1 mm. Da die Druckplatten unterschiedliche Plattendicken haben können, etwa im Bereich von 0,1 bis 0,3 mm, ist eine Einrichtung erforderlich, mit der der Fokus der Laserstrahlen zur Dicke der Druckplatten passend eingestellt werden kann.The depth of field of a laser beam in an external drum platesetter for printing plates is about 0.1 mm. Since the printing plates can have different plate thicknesses, such as in the range of 0.1 to 0.3 mm, a device is required with which the focus of the laser beams can be adjusted to the thickness of the printing plates suitable.
Die
In der
In der
Bekannte Einrichtungen, mit denen die optische Abbildung der Laserstrahlen in einem Außentrommelbelichter verstellt wird oder mit denen der Belichtungskopf, der die Laserstrahlen erzeugt, radial zur Belichtungstrommel hin bzw. von ihr weg verschoben wird, sind konstruktiv aufwendig und mit hohen Kosten verbunden. Das gilt besonders, wenn die Druckplatte mit vielen Laserstrahlen oder mit mehreren Belichtungsköpfen gleichzeitig belichtet werden soll.Known devices with which the optical image of the laser beams is adjusted in an external drum imagesetter or with which the exposure head, which generates the laser beams is moved radially to the exposure drum or away from it, are structurally complex and associated with high costs. This is especially true if the printing plate is to be exposed simultaneously with many laser beams or with multiple exposure heads.
Es ist deshalb die Aufgabe der vorliegenden Erfindung, eine kostengünstige, einfach zu realisierende und zuverlässige Vorrichtung in einem Belichter zur Aufzeichnung von Druckvorlagen auf Druckplatten anzugeben, mit der die Fokuseinstellung der Laserstrahlen von mehreren Belichtungsköpfen gleichzeitig vorgenommen werden kann. Die Aufgabe wird durch eine Einrichtung gemäß Anspruch 1 gelöst.It is therefore an object of the present invention to provide a low-cost, easy-to-implement and reliable device in an imagesetter for recording of artwork on printing plates, with the focus adjustment of the laser beams can be made from several exposure heads simultaneously. The object is achieved by a device according to
Die Erfindung wird anhand der Figuren näher beschrieben.
Es zeigen:
- Fig. 1
- den Aufbau eines Außentrommelbelichters,
- Fig. 2
- eine Kippvorrichtung für einen Belichtungskopfträger,
- Fig. 3
- einen Kippantrieb mit einer Exzenterwelle,
- Fig. 4
- einen Kippantrieb mit einem Kipphebel, und
- Fig. 5
- ein Scharnier mit einem Federblech.
Show it:
- Fig. 1
- the construction of an external drum imagesetter,
- Fig. 2
- a tilting device for an exposure head carrier,
- Fig. 3
- a tilting drive with an eccentric shaft,
- Fig. 4
- a tilting drive with a rocker arm, and
- Fig. 5
- a hinge with a spring plate.
Mehrere Belichtungsköpfe 11, die auf einem gemeinsamen Belichtungskopfträger 16 angeordnet sind, werden in einem relativ kurzen Abstand axial an der Belichtungstrommel 1 entlang bewegt, während die Belichtungstrommel 1 rotiert. Jeder Belichtungskopf 11 fokussiert einen oder mehrere Laserstrahlen 12 auf die Trommeloberfläche, die die Trommeloberfläche in Form von engen Schraubenlinien überstreichen. Auf diese Weise werden bei jeder Trommelumdrehung eine bzw. mehrere Gruppen von Bildlinien in der Umfangsrichtung x auf das Aufzeichnungsmaterial belichtet. Der Belichtungskopfträger 16 wird in der Vorschubrichtung y mittels einer Vorschubspindel 13 bewegt, mit der er formschlüssig verbunden ist und die mit einem Vorschubantrieb 14 in Drehbewegung versetzt wird.A plurality of
Durch die Verwendung mehrerer Belichtungsköpfe 11 wird die Produktivität erhöht, d.h. eine Druckplatte 3 kann in kürzerer Zeit belichtet werden.
Als Antrieb für die Kippbewegung können verschiedene Konstruktionen verwendet werden.
Der Drehantrieb für die Exzenterwelle 26 erfolgt zum Beispiel mit einem Schrittmotor 30 über einen Zahnriemen 31 (
- 11
- BelichtungstrommelImaging drum
- 22
- Rotationspfeilrotation arrow
- 33
- Druckplatteprinting plate
- 44
- Vorderkanteleading edge
- 77
- Hinterkantetrailing edge
- 88th
- Anlagestiftconditioning pin
- 99
- Klemmleisteterminal block
- 1010
- Begrenzungsstücklimiting piece
- 1111
- Belichtungskopfexposure head
- 1212
- Laserstrahllaser beam
- 1313
- Vorschubspindelfeed screw
- 1414
- Vorschubantriebfeed drive
- 1515
- Druckvorlagemaster
- 1616
- BelichtungskopfträgerExposure head carrier
- 2020
- Trägerplattesupport plate
- 2121
- Trägerbasissupport base
- 2222
- Führungsschieneguide rail
- 2323
- Scharnierhinge
- 2424
- Pfeilarrow
- 2525
- Pfeilarrow
- 2626
- Exzenterwelleeccentric shaft
- 2727
- TragarmBeam
- 2828
- Zapfenspigot
- 2929
- Rollerole
- 3030
- Schrittmotorstepper motor
- 3131
- Zahnriementoothed belt
- 4040
- Schrittmotorstepper motor
- 4141
- Zugspindelfeed shaft
- 4242
- Mutternsegmentnut segment
- 4343
- Rollerole
- 4444
- Kipphebelrocker arm
- 5050
- Spaltgap
- 5151
- Federblechspring plate
- 5252
- Klemmschieneclamping rail
- 5353
- Pfeilarrow
Claims (4)
- A device for setting a focus of several exposure heads (11) on a recording material in an exposure unit for recording printing originals (15), which comprises:- an exposure drum (1) for holding the recording material,- an exposure-head carrier (16), consisting of a carrier plate (20) for holding the exposure heads (11) and a carrier base (21),- a hinge (23), connecting the carrier plate (20) and the carrier base (21) such that they can move, and- a tilting drive, with which the carrier plate (20) is tilted in relation to the carrier basis (21) so that the exposure heads (11) can be moved jointly and substantially radially toward the exposure drum (1) or away from the exposure drum (1).
- The device according to claim 1, characterized in that the hinge (23) is formed of at least one spring plate (51).
- The device according to claim 1, characterized in that the hinge (23) is disposed on the front side of the exposure-head carrier (16) facing the exposure drum (1).
- The device according to claim 1, characterized by a rotatably driven eccentric shaft (26) connected to the rear side of the carrier plate (20) through carrier arms (27).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10309772A DE10309772A1 (en) | 2003-03-06 | 2003-03-06 | Device for adjusting the focus of the exposure heads in a printing platesetter |
DE10309772 | 2003-03-06 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1454743A2 EP1454743A2 (en) | 2004-09-08 |
EP1454743A3 EP1454743A3 (en) | 2006-07-26 |
EP1454743B1 true EP1454743B1 (en) | 2009-09-09 |
Family
ID=32797837
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03022703A Expired - Lifetime EP1454743B1 (en) | 2003-03-06 | 2003-10-09 | Device for adjusting the focal point of an exposure head in a plate exposure system |
Country Status (5)
Country | Link |
---|---|
US (1) | US7116346B2 (en) |
EP (1) | EP1454743B1 (en) |
JP (1) | JP4015633B2 (en) |
CN (1) | CN100421933C (en) |
DE (2) | DE10309772A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102033425A (en) * | 2010-10-26 | 2011-04-27 | 中国航天科技集团公司第五研究院第五一○研究所 | Method for manufacturing micromechanical shutter |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008250058A (en) * | 2007-03-30 | 2008-10-16 | Dainippon Screen Mfg Co Ltd | Image recording device |
EP1997627A1 (en) * | 2007-06-01 | 2008-12-03 | Andromeda S.r.l. | Image forming device, in particular for printing litographic plates |
DE102008050928A1 (en) | 2008-10-10 | 2010-04-15 | Heidelberger Druckmaschinen Ag | Method and device for avoiding moirées when imaging substrates |
US20140233080A1 (en) * | 2013-02-15 | 2014-08-21 | Xerox Corporation | Multi-Beam ROS Imaging System |
CN113634903B (en) * | 2021-06-30 | 2023-03-14 | 中钞印制技术研究院有限公司 | Laser platemaking equipment and platemaking system |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4266869A (en) * | 1979-02-09 | 1981-05-12 | Coulter Systems Corporation | Apparatus and method for making lithographic printing plates |
US4357633A (en) * | 1979-07-11 | 1982-11-02 | Buechler Lester W | Engraving apparatus and method |
JPH06270500A (en) * | 1993-03-24 | 1994-09-27 | Pfu Ltd | Carrier mechanism and controlling method therefor |
US6042217A (en) * | 1997-07-25 | 2000-03-28 | Tektronic, Inc. | Print head positioner mechanism |
DE19848455A1 (en) * | 1998-10-21 | 2000-04-27 | Heidelberger Druckmasch Ag | Device for adjusting the position of a cylindrical image carrier in relation to a scanning head |
US6604465B2 (en) * | 2000-02-25 | 2003-08-12 | Agfa Corporation | Pin registration system for mounting different width printing plates |
JP4202576B2 (en) * | 2000-03-23 | 2008-12-24 | 富士フイルム株式会社 | Scanning exposure equipment |
-
2003
- 2003-03-06 DE DE10309772A patent/DE10309772A1/en not_active Ceased
- 2003-10-09 DE DE50311893T patent/DE50311893D1/en not_active Expired - Lifetime
- 2003-10-09 EP EP03022703A patent/EP1454743B1/en not_active Expired - Lifetime
- 2003-12-05 US US10/728,386 patent/US7116346B2/en not_active Expired - Fee Related
-
2004
- 2004-03-03 JP JP2004059471A patent/JP4015633B2/en not_active Expired - Fee Related
- 2004-03-08 CN CNB2004100286753A patent/CN100421933C/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102033425A (en) * | 2010-10-26 | 2011-04-27 | 中国航天科技集团公司第五研究院第五一○研究所 | Method for manufacturing micromechanical shutter |
CN102033425B (en) * | 2010-10-26 | 2012-07-11 | 中国航天科技集团公司第五研究院第五一○研究所 | Method for manufacturing micromechanical shutter |
Also Published As
Publication number | Publication date |
---|---|
CN100421933C (en) | 2008-10-01 |
DE10309772A1 (en) | 2004-09-30 |
EP1454743A2 (en) | 2004-09-08 |
JP2004274749A (en) | 2004-09-30 |
EP1454743A3 (en) | 2006-07-26 |
JP4015633B2 (en) | 2007-11-28 |
DE50311893D1 (en) | 2009-10-22 |
US20040207711A1 (en) | 2004-10-21 |
US7116346B2 (en) | 2006-10-03 |
CN1526548A (en) | 2004-09-08 |
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