Classifications

• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
  • G03F3/00—Colour separation; Correction of tonal value
• • 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
  • H04N1/46—Colour picture communication systems
  • H04N1/56—Processing of colour picture signals
  • H04N1/60—Colour correction or control
  • H04N1/6011—Colour correction or control with simulation on a subsidiary picture reproducer
• • 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
  • H04N1/40—Picture signal circuits
  • H04N1/40056—Circuits for driving or energising particular reading heads or original illumination means
• • 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
  • H04N1/46—Colour picture communication systems
  • H04N1/48—Picture signal generators
  • H04N1/482—Picture signal generators using the same detector device sequentially for different colour components
  • H04N1/484—Picture signal generators using the same detector device sequentially for different colour components with sequential colour illumination of the original
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N9/00—Details of colour television systems
  • H04N9/11—Scanning of colour motion picture films, e.g. for telecine

Definitions

• the present invention relates to a device for producing pull-out films for the print reproduction of positive or negative originals according to the preamble of claim 1.
• the present invention is concerned with the optoelectronic creation of films for black and white printing and in particular for color printing.
• DE-OS 3049349 discloses a device for producing pull-out films for the print reproduction of positive or negative originals of the type mentioned above.
• '' 'To the color computer of the known device is followed by a monitor on which a monitor image is reproduced, the computer corresponds to the result of the calculation by the Farb ⁇ .
• this b'e- known apparatus image to the viewer appear tinted , or has a brightness that is not desired for the viewer, he tries to compensate accordingly by changing the basic setting of the basic color values or brightness of the color calculator.
• the known system comprises a light source with which an original is exposed, a CCD recording device for scanning the original and for generating a video signal representing the original, and an analog-digital converter device for converting the video signal into digital image information, on the one hand a digital graphic monitor for displaying the digitized image information of the original and on the other hand is fed to a computer.
• the computer calculates control signals based on the digital image information, which correspond to the control values for the colors yellow, magenta, cyan and black, with which a film generating device for producing the individual color separation films for the colors mentioned, and a black separation film, can be controlled.
• DE-OS 30 49 349 Another device, which corresponds both structurally and in terms of its operation essentially to the generic device just explained, is known from DE-OS 30 49 349.
• This known device differs from the device just described.
• This computer is hol • " ⁇ this known device a ausgabevorrifc'h 1 - tung in the form of a cassette tape player, a Lochstrei ⁇ fendruckers or the like downstream of said Sp-egg chermedien by a data input device of eigent ⁇ generation of film forming apparatus for producing it.
• Color separation films or color separation plates are legible, but the functional part corresponds to the overall system according to DE-OS 30 49 349 of the generic device described above.
• a photographic system for producing photographic prints which has an exposure device with a first color mixing head and a first sensor, an image analysis device with a second color mixing head and a second sensor, and one Evaluation circuit for checking the agreement of the sensor signals includes.
• This photographic system is not suitable for the production of color separation films or printing films.
• the present invention is based on the object of developing a device of the type mentioned at the outset in such a way that changes, changes in the color setting and density setting for the separation films can be achieved without problems of mutual influence of the Set color or brightness settings.
• This object is achieved in a device for producing a printing film or color separation film according to the preamble of claim 1 by the feature specified in the characterizing part of claim 1.
• a setting device for the brightness and / or the color values of the light with which the original can be exposed is arranged between the latter and the light source.
• This Einteilvor ⁇ device can for example be designed together with the light source in the form of a color mixing head.
• a change in density and / or change in color of the printing film and / or color separation film is not brought about by a computer operation, but by a changed setting of the setting device, by means of which the brightness and / or the color temperature of the light are used to which the original is exposed is changed.
• the analog video signal is fed from the scanning device to a video monitor on which the analog video image of the original can be reproduced.
• This embodiment of the device according to the invention in conjunction with the setting device for the brightness and / or color temperature of the light for exposure of the original, means that all changes in color and / or density by manipulation of the setting device effect in real time without delay the video monitor can be traced, so that it is possible to give a trigger command for generating the reproduction image signals only after optimizing the video monitor image.
• the comparatively long time for the generation and digitization of the high-resolution reproduction image signal and the generation of the digital control commands for the film production device thus has no negative influence on the operating speed in the correction of the color and density.
• the adjusting device according to claims 2 and 3 can be realized particularly simply in that it is formed by a color mixing head which comprises an adjustable color filter set and / or an adjustable ⁇ aperture or neutral density filter.
• the adjustment preferably takes the form educajs additive or subtractive color mixing head.
• the scanning device is preferably formed by a high-resolution CCD recording device, as set out in claim 4.
• an image resolution sufficient for a print quality can be used.
• the film generating device is formed by a black and white exposure device, which can preferably be designed as a laser printer, which is used for the exposure of the color separation films or printing films.
• the scanning device advantageously comprises a video camera and a high-resolution CCD scanning device.
• the only figure shows the structure of the device according to the invention for producing a printing film or color separation film.
• the device shown in the figure which is designated in its entirety by the reference number 1, is used to produce separation films 2, 3, 4, 5 for the colors Yellow, cyan, magenta and black for print reproduction.
• the device according to the invention is of course only used to produce a single printing film 5.
• the term separation film should not only include color separation films or printing films, but also color separation printing plates or printing plates.
• the device 1 comprises a halogen light source 6, behind which an aperture 7 and a color filter set 8, 9, 10 are arranged.
• the color filter set 8, 9, 10 consists of three individual color filters 8, 9, 10 for the three primary colors, which can be adjusted by hand.
• the original can be a positive or a negative original in the form of any image material, and thus comprises transparencies, dianegati ⁇ ve, paper images, transparencies and the like.
• the original 12 is imaged via a lens 13 on a scanning device 14 c for the reproduction image signals .
• Image signals from the scanning device 14 are fed to a video monitor 15, on which a video image corresponding to the video signal can be displayed.
• the image signals are fed to an analog-to-digital converter device 16, which digitizes the video signal and feeds it to a color computer 18, which on the output side is connected both to the film generating device 19 and to a graphic monitor.
• the computer 18 carries out a computational conversion of the digitized red-green-blue video signal into control values or control signals for the color values in yellow, magenta, cyan and in the black separation values. These control signals are fed to a film generating device 19, which can be formed, for example, by a laser printer, which in black and white exposes the printing films for the black separation and for the color separations for yellow, magenta and cyan. ⁇
• the scanning device 14 preferably comprises a video camera 14a, which is either " directly " with the video monitor 15 or, using negatives as a template, via a positive image. Negative circuit 21 for the color reversal of the video signal is connected, and a high-resolution CCD scanning device 14b, which is connected to the digital color computer 18 via the analog-digital converter 16.
• the CCD scanning device 14b has a single, line-shaped CCD Scanning element, the computer-controlled step by step in the column direction for scanning the original vers is chiebbar.
• Such a configured CCD Abtast ⁇ device enables high resolution scanning 'of the still image of the original with a limited cost claims and compared to the cost that must be spent on CCD arrays with sufficient for the printing technique resolution.
• a data output device 20 can be provided, which is used for data output on any data storage medium of the control values that are generated by the computer 18.
• e .ne (not shown) data reading device with a subsequent * exposure device for color separation films or printing films can be provided, to which the brightness control signals and / or color separation control signals stored by the data output device on a data storage medium are supplied for the exposure device .
• the graphics monitor 17 is then set by setting the color computer 18 accordingly so that its screen image corresponds identically to that of the video monitor 15.
• a gray wedge can also be shown in the screen display of the graphic monitor.
• the setting of the computer 18 is adjusted so that, due to the color separation films 2 to 5, there is a print which corresponds to the screen representations on the monitors 15, 17 in the correct color and brightness.
• the CCD scanning device works only very slowly, since the CCD scanning element has to be moved step by step in the column direction in order to scan the entire original, the operator can adjust the color filter set 8, 9, 10 in real time and carry out without a time delay, the CCD scanning device 14b only needing to be operated for line-by-line scanning of the original after the video monitor image has been optimized.
• the device 1 not only enables an immediate image analysis for color correctness and correct density, but also a delay-free determination of the section to be printed with detail determination and masking as well as an immediate effective image determination.
• the device according to the invention can also be used for the black and white area.
• the setting device is limited to the diaphragm 7, the color filter set 8, 9, 10 becoming superfluous.
• any templates can be processed by the device 1 according to the invention, namely negatives, positives in the form of slides or paper images or text foils and the like.
• the term “print film” or “color separation film” used in the present application is intended to encompass all media that can be used for producing a color print or black and white print.
• high-resolution video device used in the present application is intended to encompass all image converter systems suitable with regard to their resolution for printing.
• sequentially scanning, in particular sequentially displaceable, CCD image converter devices appear to be advantageous for the purposes of the present invention.

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• Engineering & Computer Science (AREA)
• Multimedia (AREA)
• Signal Processing (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Color Image Communication Systems (AREA)
• Facsimile Image Signal Circuits (AREA)
• Projection-Type Copiers In General (AREA)
• Manufacture Of Macromolecular Shaped Articles (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=6374144

Family Applications (1)

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• 1989
  • 1989-02-15 DE DE3904545A patent/DE3904545C1/de not_active Expired - Fee Related
  • 1989-09-27 EP EP89910857A patent/EP0458785A1/de not_active Withdrawn
  • 1989-09-27 KR KR1019900701079A patent/KR920005770B1/ko not_active Expired
  • 1989-09-27 JP JP1510205A patent/JPH04503258A/ja active Pending
  • 1989-09-27 WO PCT/EP1989/001130 patent/WO1990009619A1/de not_active Application Discontinuation

Non-Patent Citations (1)

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