WO2001072029A1 - Scanner a tambour et procede pour balayer des cylindres a original - Google Patents

Scanner a tambour et procede pour balayer des cylindres a original Download PDF

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Publication number
WO2001072029A1
WO2001072029A1 PCT/DE2001/000366 DE0100366W WO0172029A1 WO 2001072029 A1 WO2001072029 A1 WO 2001072029A1 DE 0100366 W DE0100366 W DE 0100366W WO 0172029 A1 WO0172029 A1 WO 0172029A1
Authority
WO
WIPO (PCT)
Prior art keywords
magazine
master cylinder
cylinder
drum scanner
master
Prior art date
Application number
PCT/DE2001/000366
Other languages
German (de)
English (en)
Inventor
Norbert Roth
Original Assignee
Heidelberger Druckmaschinen Aktiengesellschaft
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Heidelberger Druckmaschinen Aktiengesellschaft filed Critical Heidelberger Druckmaschinen Aktiengesellschaft
Publication of WO2001072029A1 publication Critical patent/WO2001072029A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/06—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using cylindrical picture-bearing surfaces, i.e. scanning a main-scanning line substantially perpendicular to the axis and lying in a curved cylindrical surface

Definitions

  • the invention relates to a drum scanner with a loading magazine for master cylinders and a method for scanning master cylinders, which is carried out with this drum scanner
  • EP 0 270 011 B1 describes a drum scanner in which a plurality of master cylinders with horizontally lying longitudinal axes are mounted on a loading magazine in the form of an upright turntable.
  • One of the master cylinders is in a scanning position in which it is at one end around it Longitudinal axis is rotated while a carriage carrying a scanning element is moved parallel to the axis of the master cylinder.
  • This drum scanner can automatically scan several master cylinders one after the other. It is necessary to set each master cylinder to a specific magazine location or to inform the scanner controller of the magazine location number of each master cylinder. So that each master cylinder can be scanned with the associated parameters. If the operator takes a master cylinder out of the loading magazine, for example after the prescan, he has to take care of the binding to the magazine location to get it back to the original magazine location to ensure a correct workflow This is a significant source of errors
  • DE 195 14 297 A1 shows a device for identifying document cassettes that are stored in a loading magazine for a flatbed scanner.
  • Each document cassette contains a bar code carrier that has a permanently programmed identifier.
  • the identifiers of the document cassettes can be queried by an identification unit with an antenna that can be used Moving step-by-step from magazine location to magazine location Knowing which document cassette is in which magazine location enables an error-free workflow when changing the document cassettes.However, every time a cassette has been changed, all document cassettes have to be queried again mechanically by the identification unit
  • the invention has for its object to provide a scanner with a loading magazine, in which the document carriers in the loading magazine can be changed without any problems, with identification of the document carriers being possible at any time in the system
  • a drum scanner with a holding and rotating device which is set up to hold an exchangeable master cylinder in an essentially upright position from below and to rotate it about its longitudinal axis for scanning, and with a loading magazine which has a number n Contains magazine locations that are set up to hold master cylinders in the same orientation and height as on the holding and rotating device of the drum scanner.
  • n magazine positions and the holding and rotating device are arranged at regular intervals around a cylinder transport carousel
  • the n + 1 has cantilevers, which extend in a star shape to the n magazine locations or the holding and rotating device, and which is set up to collectively lift master cylinders located on the n magazine locations or the holding and rotating device with the aid of the cantilevers, move in a circle and subtract at a desired point
  • Each magazine location contains a circular antenna, the axis of which coincides with the longitudinal axis of a master cylinder located in the magazine location, and each master cylinder contains a transponder on its underside in which an electronic identifier is stored, which can be read out and rewritten via the antenna
  • the antenna at each magazine location makes it possible to identify all of the master cylinders stored in the loading magazine at any time.This makes it easy to remove or reinsert any master cylinder from the loading magazine at any time.For example, if a master cylinder is removed from the loading magazine after the prescan, this can be done can be recognized by the scanner control and the fine scan is not carried out until the scanner control recognizes that the corresponding original meter is back in the loading magazine It does not matter whether the temporarily removed master cylinder is reset to the soft magazine location If any newly added master cylinder is to be scanned with priority, it can be placed in any free magazine location, and if the loading magazine is full, it can be used against any one Not yet or only roughly scanned master cylinders are exchanged To scan the new master cylinder, the current work cycle is simply interrupted at a suitable point, and the new master cylinder is transported with the cylinder transport carousel into the turning and holding device, scanned there and then back to a free magazine location requested The original work sequence can then be resumed automatically immediately. If
  • Master cylinders for drum scanners normally have a hollow axis, so that an identification device such as the transponder cannot be attached centrally.
  • the circular antennas which correspond to the diameter of the roller flange, make it possible to identify such master cylinders in any position in relation to a magazine location Reading This means that the operator does not have to pay attention to a specific angular position when inserting a master cylinder, nor is it necessary to move the master cylinder in any way in order to read the identifier, as is necessary in the prior art
  • each template cylinder carries a barcode as an optical identifier, which is read optically in the rotating and holding device of the scanner, to be easily retrofitted with a loading magazine Retrofit remain the authoritative identifier. If the scanner controller detects that its electronic counter is located in a master cylinder located in the rotating and holding device If the identifier that was previously read in the loading magazine does not match the optical identifier, the master cylinder is transported to a free magazine location using the cylinder transport carousel and provided with the appropriate electronic identifier there before it is further processed.
  • the transponders used each contain a chip that stores the electronic identifier and preferably other data such as features of the master cylinder and / or comments.
  • the electronic identifier and possibly further data can be read or rewritten using high-frequency signals from the antenna.
  • the chip does not have its own power supply, but is via the High-frequency energy that radiates from the antenna is supplied with current
  • the transponder is attached to the underside of the master cylinder at a predetermined distance from the longitudinal axis and the radius of the circular antenna approximately the distance of the transponder from the longitudinal axis corresponds to the original cylinder or is larger
  • the transponder should have as little distance as possible from the antenna in the direction of the antenna axis. This requirement can easily be met, since the transponder is located on the underside of the original cylinder, which is closest to the magazine location. If the distance of the transponder from the longitudinal axis of the master cylinder is smaller than the radius of the antenna, the transponder and antenna can even be in one plane
  • the arrangement of the transponder according to the invention makes it possible to set up the holding and rotating device and the loading magazine in such a way that master cylinders with different diameters can be processed
  • the electronic identifier has the additional benefit that it can also be read or written during work preparation or post-processing or as part of an operational data acquisition, while a master cylinder is not in the drum scanner but in the loading magazine or elsewhere, for example. - o - game on a separate template mounting unit
  • a master cylinder for example in a template mounting unit, you only have to attach a suitable circular antenna at a suitable location.
  • master cylinders can be changed relatively gently so that the drum scanner is only slightly vibrated due to accidental bumps when manually changing a master cylinder.
  • a master cylinder can be changed while another master cylinder is being scanned Since the scanning process can also be disturbed by small vibrations, the drum scanner had to be relatively massive if no further measures were taken
  • a change of master cylinder during operation with an acceptable weight of the arrangement is made possible by designing the drum scanner and the loading magazine as separable assemblies which are mechanically connected to one another by connecting members with vibration-damping properties and which are each provided with one or more feet, which essentially bear the weight of the corresponding assembly.
  • the vibration-damping connecting links keep the two assemblies essentially in the correct position. Bumps when changing master cylinders in the loading magazine are not transmitted to the drum scanner, but are picked up by the floor on which the loading magazine rests This means that a roll change is possible at any time, at least if it is done carefully
  • the drum scanner and the loading magazine may only be in mechanical contact via the vibration-damping connecting links, If the transfer of impacts on the loading magazine to the drum scanner is to be reliably avoided So that the tooth transport carousel can fulfill its function under these circumstances, it is designed so that it is either attached to the drum scanner or to the loading magazine and the respective other assembly in no position Touched
  • the cylinder transport carousel is attached to the drum scanner, specifically in the area of a cast part that forms a basis for the holding and rotating device
  • a method for scanning a plurality of master cylinders in a drum scanner comprises the features that one or more master cylinders are placed on any magazine locations in the loading magazine, the electronic identification of each master cylinder on a magazine location is read with the aid of the corresponding antenna, and a master cylinder to be scanned with the help of the cylinder transport carousel, the holding and rotating device is requested.
  • the identification of the master cylinders on the magazine location can be carried out automatically, ie without the operator's knowingly doing anything
  • Original scanners can first be subjected to a coarse scanning (prescan) by using the cylinder transport carousel to successively request the holding and rotating device and after the coarse scanning to be requested back to an empty magazine location in the loading magazine. After parameters for a fine scanning (fine scan) If the master cylinder has been defined, the master cylinder can be subjected to fine scanning by requesting the holding and rotating device with the help of the cylinder transport carousel and being requested back to a free magazine location in the loading magazine after the fine scanning
  • This method is ideally suited for a number of master cogs that corresponds to the number n + 1, which corresponds to the number n of magazine locations plus the space on the holding and rotating device.
  • the method is not limited to the processing of exactly this number of master cogs fewer template cogs can be processed in this way, but also more, since the master cylinders can be removed from the loading magazine after the prescan without interrupting the processing and can be stored elsewhere in the meantime.
  • the operator can process the prescans in a contiguous block, and after performing the prescans, he has to do a maximum of n +1 no longer have to worry about fine scans around the drum scanner During this time, the operator can do other tasks without being distracted by the running drum scanner. This is particularly advantageous if fine scans are carried out with a large amount of data
  • FIG. 1 shows a perspective view of a drum scanner and a loading magazine therefor
  • FIG. 2 shows a sectional view of the drum scanner
  • FIG. 5 shows a detailed sectional view of the loading magazine in the area of a magazine place on which a master cylinder is currently located
  • FIG. 6 shows time diagrams for explaining examples of work processes on a drum scanner, FIG. 6a showing a work sequence without a loading magazine and FIG. 6b showing a corresponding work sequence with a loading magazine - o -
  • FIG. 1 shows a drum scanner 2 and a loading magazine 4, which are drawn in perspective and separated from one another
  • the drum scanner 2 shown in more detail in FIG. 2 contains an elongated, upright frame 6 with four feet 8 made of rubber or other vibration-damping material. At the front and approximately at a medium height, there is a casting 10 in which a spindle 12 with a vertical axis is located The spindle 12 is rotatable by means of an electric motor (not shown) and carries a cone 14 at its upper end in order to form a holding and rotating device for master cylinders 16
  • Each master cylinder 16 consists of a hollow cylinder 18 made of transparent material, which is enclosed at one end in a flange 20 made of metal.
  • the flange 20 contains a tubular extension 22 that extends axially to the hollow cylinder 18.
  • an inner cone 50 in Fig. 5
  • a master cylinder 16 placed on the cone 14 of the spindle 12 assumes the upright position shown in FIG. 2. In operation, it is rotated about its axis by the spindle 12, while an optical scanning element (not shown) is directed towards the outside of the master cylinder 16 is moved parallel to the axis of the master cylinder 16 in order to scan the master cylinder 16 along circular or helical lines.
  • the masters which are glued to the outside of the transparent hollow cylinder 18 can either be illuminated from the outside (top view scanner) or by a light source at the end of a lance, which is driven into the hollow cylinder 18 from above, are illuminated from the inside (see-through scanning).
  • the scanning element, the lighting lance, a movable cover for the master cylinder 16 and other components of the drum scanner 2 are not shown in the figures, in order to do this not to be confusing
  • the drum scanner 2 can accommodate master cylinders 16 with different diameters, in this example those with 150 mm and 212 mm diameter
  • a barcode label which carries a barcode as an optical identifier, is glued to the outside of each master cylinder 16 at a suitable location.
  • the drum scanner 2 contains a barcode reader, not shown, which can read the barcode of a master cylinder 16 when it is in the drum scanner 2 and rotates
  • a cylinder transport carousel 24 (FIG. 2) is screwed onto the front of the cast part 10 in which the spindle 12 is mounted.
  • the cylinder transport carousel 24 contains a fixed base in which a spindle 26 with a vertical axis of rotation is stored, and also devices for rotating and for lifting or lowering the spindle 26, ie electric motors and power transmission elements, for example gear wheels and cam disks, which are not shown in detail
  • a turntable 30 is attached to the upper end of the spindle 26.
  • the turntable 30 contains four cantilevers 32 which are arranged symmetrically around the spindle 26 and extend in a common horizontal plane.
  • Each cantilever 32 consists of an incompletely closed annular element which is attached to it has a gap on one side and is attached to the turntable 30 on the opposite side.
  • the inner diameter of each arm 32 is slightly smaller than the diameter of the flange 20 of the smallest master cylinder 16 used, so that the arm 32 can reach under the flange 20 of a master cylinder 16, in order to lift each boom 32 is attached to the turntable 30 so that it can be folded up and in for mounting and dismounting the loading magazine 4
  • the loading magazine 4 is a frame with one or more rubber feet 34
  • the top of the loading magazine 4 is approximately circular table 36
  • magazine spaces 38 are formed in table 36
  • a recess 40 is formed in table 36.
  • Each magazine space 38 is shaped to be the one Master cylinder 16 placed from above is held upright and centered in the process.
  • each magazine location 38 is surrounded by an approximately annular trough 42 which has approximately the shape of an extension 32 of the turntable 30, but is somewhat larger in order to accommodate the extension 32
  • the table 36 or the three magazine locations 38 then have such a height that master cylinders 16 located on magazine locations 38 (FIG. 3 shows one of them) are held at the same height as a master cylinder 16 which is located on the spindle 12 of the drum scanner 2
  • the cylinder transport carousel 24 is first screwed onto the casting 10 of the drum scanner 2.
  • the arms 32 on the turntable 30 of the loading magazine 4 are folded up, and the loading magazine 4 is pushed horizontally towards the drum scanner 2 and in one position, in which holds the spindle 12 of the drum scanner 2 in the recess 40 in the table 36, mechanically connected to the drum scanner 2.
  • the three magazine locations 38 of the loading magazine 4 and the spindle 12 of the drum scanner 2 are located at exactly the same distances around the circumference of a circle the axis of the cylinder transport carousel 24
  • the arms 32 are folded down again so that they each extend in one of the annular troughs 42 (FIG. 1).
  • an electrical connection cable 44 (FIG. 3) is connected from the loading magazine 4 to the drum scanner 2.
  • the connection cable 44 is used for data transmission between the drum scanner 2 and the loading magazine 4
  • the connecting cable 44 comprises a power supply cable for the loading magazine 4, which does not have its own power supply and is supplied with power by the drum scanner 2
  • FIG. 4 shows the drum scanner 2 and the loading magazine 4 in the assembled state and with attached master cylinders 16. In this state, the arms 32 (only partially visible in FIG. 4) extend in a contact-free manner in each of the annular depressions 42 (FIG. 1) on the edge of each Magazine location 38 The turntable 30 and its extension 32 do not touch the table 36 of the loading magazine 4 either in the raised or lowered position of the cylinder transport carousel 24.
  • the extension 32 raises all the template cylinders 16 which are in the drum scanner 2 or are in the loading magazine 4 Then the cylinder transport carousel 24 can be rotated by 90 ° or a multiple thereof in order to automatically take a master cylinder 16 out of the drum scanner 2 and to transport another master cylinder 16 previously located in the loading magazine 4 into the drum scanner 2 If the cylinder transport carousel 24 is lowered again, the master cylinder 16 are automatically centered on the cone 14 of the spindle 12 or on the magazine positions 38. This leaves scope for the accuracy with which the relative position between the drum scanner 2 and the loading magazine 4 must be maintained
  • damping element 46 which is located in the lower area of drum scanner 2 and loading magazine 4.
  • the damping element 46 consists, for example, of a rubber buffer which is attached to the drum scanner 2 at one end and at the other end a metal bracket 48 protruding from the loading magazine 4 (Fig. 3) is attached when the loading magazine 4 is mounted on the drum scanner 2
  • points 56 FIG. 2
  • dampers are the only mechanical connection between the drum scanner 2 and the loading magazine 4, so that they are decoupled from one another in terms of vibration
  • the damping devices 46 are designed stiff enough that the relative position between the loading magazine 4 and the drum scanner 2 is maintained with the necessary accuracy. In addition, the damping devices 46 are designed to be flexible enough that vibrations of the loading magazine 4 caused by the operator are not transmitted to the drum scanner 2, but rather via the rubber feet 34 are largely picked up from the floor on which the devices stand. This makes it possible to remove master cylinder 16 by hand from the loading magazine 4 or to load the magazine magazine 4 with master cylinders 16, while scanning takes place in the drum scanner 2 without the damping springs 46 this would not be possible since the scanning process can also be disturbed by small bumps
  • a mechanical or electronic lock prevents the turntable 30 from being able to be rotated in the lowered state, and the end positions of "raising” and “lowering” the spindle 26 and the angular position of the turntable 30 are monitored by means of light barriers or buttons, which are also not shown.
  • FIG. 5 is a detailed sectional view of the table 36 of the loading magazine 4 in the area of a magazine location 38.
  • a master cylinder 16, of which only the lower flange 20 is shown in FIG. 5, is about to be placed on the table 36.
  • the master cylinder 16 shown in FIG. 5 is a master cylinder with a larger diameter than the master cylinder 16 of FIGS. 2 to 4.
  • the tubular extension 22 can be seen on the flange 20, in which the inner cone 50 is formed, which fits on the cone 14 of the spindle 12 in the drum scanner 2 at the bottom of the flange 20
  • a ring 52 is also attached to the master cylinder 16. forms, which has a larger diameter than the tubular extension 22 and has an annular support surface 54 on its underside
  • a flat transponder 58 is seated in a holder 60 which is glued to the flange 20.
  • An annular coil unit 62 is attached to the magazine location 38, the radius of which is approximately the distance from the Transponder 58 corresponds to the axis of the master cylinder 16.
  • the coil unit 62 extends parallel to the table 36 and can be moved perpendicularly to it by a predetermined distance, whereby it is pressed upwards by a plurality of springs 64, only one of which is shown in FIG
  • the coil unit 62 contains an annular winding space 66 which contains a wire winding
  • the master cylinder 16 When the master cylinder 16 is placed on the magazine location 38, it presses the coil unit 62 with its own weight against the force of the springs 64, so that the coil unit 62 lies against the transponder 58, as shown in FIG. 5
  • the transponder 58 contains a freely programmable memory chip in which an electronic identifier and any other data can be stored, for example other identification features of the master cylinder 16, or user-specific data, for example comments. These data can be read or rewritten using the coil unit 62 Suitable high-frequency signals are applied to the wire winding of the coil unit 62.
  • the wire winding of the coil unit 62 forms an antenna for transmitting the
  • the transponder 58 also obtains the power supply for the memory chip from the energy of the high-frequency signals.
  • Suitable transponders are commercially available, for example from TEMIC, PHILIPS, TIRIS and EM MICROELECTRONIC-MARIN
  • the circular shape of the coil unit 62 in connection with the defined distance between the transponder 58 and the coil unit 62 has the consequence that Depending on the angular orientation of the master cylinder 16 about its axis, there is always a good and defined electromagnetic coupling between the transponder 58 and the coil unit 62, so that the data can be reliably read or rewritten in any position. That is, as soon as a master cylinder 16 is open any magazine location 38 of the loading magazine 4, it can be identified at any time, and the data stored in the transponder 58 are also available for operating data acquisition
  • the position-independent reading and writing of the data stored in the transponder 58 is also possible if the annular coil unit 62 has a radius that is greater than the distance of the transponder 58 from the longitudinal axis of the master cylinder 16, so that the transponder 58 is in each Position of the master cylinder 16 within the radius of the coil unit 62 without touching it
  • the transponder 58 in each master cylinder 16 and the coil unit 62 at each magazine location 38 enable automatic recognition or identification of master cylinders 16 in the loading magazine 4.
  • the identification can take place automatically and without the operator's knowingly doing so.
  • Time-saving work processes are possible in which the operator must be active on the scanner at considerably greater intervals than before, with long time intervals between phases of operator activity, in which the operator can perform other activities. Nevertheless, the operator can change the template cylinder 16 in the loading magazine 4 at any time without the risk of This can be seen from the following description of details of the operation of the drum scanner 2 with the loading magazine 4 and the description of a special workflow for scanning a plurality of master cogs 16
  • the master cylinder 16 has an optical identifier in the form of a barcode label.
  • This label is conventionally the relevant identifier that is used after inserting a master cylinder 16 in the drum scanner 2 is read
  • the master cylinder 16 is rotated by an electric motor and the barcode is thus guided past the barcode reader.
  • the scanner control can identify the master cylinder 16 before it carries out its scanning with associated parameters
  • the additional electronic identifier enables the template cylinder 16 to be automatically identified in the loading magazine 4.
  • the operator had to do something or complex technical aids were required, to rotate the master cylinder 16 in the loading magazine 4 while scanning the barcode label
  • additional devices other than the loading magazine 4, for example template mounting units.
  • additional devices can also be provided with a ring-shaped coil unit 62 for reading the data in the transponders 58 or for writing data into the transponders 58 of the template cylinder 16.
  • the template cylinder can be provided 16 can also be identified as part of a work preparation or postprocessing or as part of an operational data acquisition also outside of the drum scanner 2
  • the operator who places a master cylinder 16 in the loading magazine 4 or another additional device does not have to take into account the position of the master cylinder 16.
  • the transponder 58 can be located off-center on the master cylinder 16. A central arrangement would be not possible because the middle of the flange 20 on the master cylinder 16 is used as a guide
  • the barcode label is still used as the master, ie as the relevant identifier.
  • the electronic identifier is adapted to the barcode. That is, in a first step the number that is barcode label carries, read into the transponder.This can be done, for example, by placing the corresponding master cylinder 16 at any position on the loading magazine 4 by hand. Then the master cylinder 16 is transported in any order using the cylinder transport carousel 24 into the drum scanner 2 where the barcode label
  • the diameter of the master cylinder 16 in the loading magazine 4 or in the drum scanner 2 can also be recognized automatically, for example by means of light barriers. If a master cylinder 16 is placed in the loading magazine 4 by mistake and cannot be processed by the drum scanner 2, the drum scanner will detect it at the latest 2 generates an error message
  • the identified template cylinder 16 is sent back to a free magazine location 38, where the same number as on the barcode label is written into the transponder 58 with the aid of the coil unit 62. If the barcode label of a template cylinder 16 is later changed for any reason, the new one Barcode label is recognized at the latest when this master cylinder 16 is scanned, whereupon the transponder 58 is corrected accordingly
  • each template cylinder 16 After all the template cylinders 16 have been provided with an electronic identifier, they can be loaded into the drum scanner 2 in accordance with a preprogrammed workflow. The electronic identifier and the barcode of each template cylinder 16 are compared once again. In the case of equality, the scanning takes place, and in the event of inequality the master cylinder 16 again in the loading magazine 4, where his transponder 58 is rewritten
  • a scanned master cylinder 16 can be scanned again at a later point in time, for example with a larger resolution.
  • the operator can also remove the master cylinder 16 from the loading magazine 4 in the meantime, for example to have another master cylinder 16 scanned in between.
  • the later reinsertion can also take place on a different magazine location 38 than the original one.
  • a number of master cylinders 16 can first be subjected to a prescan by successively requesting and holding the drum scanner 2 holding and rotating device using the cylinder transport carousel 24 after the prescan back to a free magazine location 38 in the loading magazine 4 after specifying parameters for a fine scan of the master cylinder 16 on the basis of the data obtained during the pre-scan, the master cylinder 16 is subjected to the fine scan by using The cylinder transport carousel 24 is successively loaded into the drum scanner 2, scanned there and then returned to a free magazine location 38 in the loading magazine 4
  • a maximum of four master cylinders 16 can be loaded, one master cylinder 16 in each case being directly accessible by the drum scanner 2.
  • This arrangement is particularly advantageous with regard to the so-called copix operation, in which a color set from four individual color separations must be scanned since four master cylinders 16 can be populated together with the individual color separations, this results in a particularly fluid workflow
  • FIG. 6b An example of such a workflow is shown in FIG. 6b, FIG. 6a showing a corresponding workflow when no loading magazine 4 is used.
  • FIGS. 6a and 6b are time diagrams, the first line A) of which each shows blocks which represent time intervals in which the operator is active has to become a whale zen Touch W and for prescan processing
  • a second line B) shows blocks that represent time intervals in which the drum scanner 2 works.
  • a third line C) indicates which of four rollers is currently being processed
  • the loading magazine 4 is automatically activated when the drum scanner 2 is switched on.
  • the loading magazine 4 is loaded by the operator of the workstation which controls the drum scanner 2 and the loading magazine 4.
  • the operator places a master cylinder 16 to be processed in any magazine location 38
  • An electronic specialist query queries this magazine location 38 and reports to the workstation the respective subject assignment, which is detected, for example, by means of a light barrier or a button, as well as the electronic identifier of the master cylinder 16 read by means of the coil unit 62 can be recognized that the magazine locations 38 are queried repeatedly at short intervals, or by a light barrier or a button that report a change.
  • the reported data are displayed on a monitor of the workstation.
  • the operator can request one in the monitor display Select the master cylinder 16 or its identifier, whereupon this master cylinder 16 is transported into the drum scanner 2 by means of the cylinder transport carousel 24, as described above, or is exchanged for a master cylinder 16 already in the drum scanner 2, and is then scanned after four rollers in this way used and subjected to a prescan, with the operator setting the parameters for the fine scans on the monitor, all fine scans are carried out automatically
  • FIGS. 6a and 6b the total time of the workflow through the loading magazine 4 is not reduced.
  • the operator's activity in FIG. 6b is concentrated on a coherent time interval, and he can operate another scanner, for example, during the fine scans

Abstract

L'invention concerne un scanner à tambour (2) comportant un dispositif de maintien et de rotation (10, 12, 14), destiné à un cylindre à original interchangeable (16), ainsi qu'un magasin de chargement (4) présentant n remplacements (38). Ces n emplacements et le dispositif de maintien et de rotation sont placés de manière circulaire autour d'un carrousel de transport de cylindre (24) qui présente n+1 bras (32) s'étendant en étoile vers les n emplacements et le dispositif de maintien et de rotation. Ce carrousel de transport de cylindre (24) est conçu pour soulever conjointement les cylindres à original à l'aide des bras, à les déplacer de manière circulaire et à les déposer en un point souhaité. Chaque emplacement de magasin contient une antenne annulaire (62) dont l'axe coïncide avec l'axe longitudinal d'un cylindre à original se trouvant sur l'emplacement de magasin. Chaque cylindre à original contient, sur son côté inférieur, un transpondeur (58) dans lequel est mémorisée une identification électronique pouvant être extraite par l'intermédiaire de l'antenne et pouvant être réécrite dans le transpondeur.
PCT/DE2001/000366 2000-03-22 2001-01-31 Scanner a tambour et procede pour balayer des cylindres a original WO2001072029A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2000114150 DE10014150A1 (de) 2000-03-22 2000-03-22 Trommelscanner und Verfahren zur Abtastung von Vorlagenzylindern
DE10014150.1 2000-03-22

Publications (1)

Publication Number Publication Date
WO2001072029A1 true WO2001072029A1 (fr) 2001-09-27

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PCT/DE2001/000366 WO2001072029A1 (fr) 2000-03-22 2001-01-31 Scanner a tambour et procede pour balayer des cylindres a original

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WO (1) WO2001072029A1 (fr)

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JPS5758422A (en) * 1980-09-25 1982-04-08 Hitachi Zosen Corp Signal transmitting method
US4654526A (en) * 1984-03-16 1987-03-31 Dainippon Screen Mfg. Co., Ltd. System for prevention of contact between analyzing head and transparent drum of color scanner
JPH06232591A (ja) * 1993-02-05 1994-08-19 Sumitomo Electric Ind Ltd 自動実装機

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JPS63141061A (ja) * 1986-12-02 1988-06-13 Dainippon Screen Mfg Co Ltd 円筒走査型画像走査装置の入力処理装置
GB2280813B (en) * 1993-08-06 1997-07-16 Itek Colour Graphics Ltd Rotary drum scanner

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US2503311A (en) * 1946-02-25 1950-04-11 Western Union Telegraph Co Facsimile transmission apparatus
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