• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A FOUR-COLOR PRINTING METHOD, in which the amount of colored inks is reduced and to compensate for this decrease, the amount of black printing ink, characterized in that, in order to improve quality by a reliable balance of gray color with a low consumption of colored inks for reproducing gray, starting from the minimum density, print with black ink only, and starting with a gray density value equal to the total density of the black ink applied, the proportion of variegated colors k is increased to max. maximal density.
    公开号:SU1271381A3
    申请号:SU833581526
    申请日:1983-04-08
    公开日:1986-11-15
    发明作者:Юнг Эггерт
    申请人:Др-Инж.Рудольф Хелль Гмбх (Фирма)；
    IPC主号:
    专利说明:

    Fig. 1 The invention relates to polygravia, and in particular to methods of four-color printing of illustrations. The aim of the invention is to improve the quality by a reliable gray balance with a low consumption of paint. -. FIG. Figure 1 shows the course of signals, colors with a decrease in the number of ink colors without a gray balance in the shadows of reproduction; in FIG. 2, the same with the gray balance; FIG. 3 shows the passage of color signals in a color correction instrument scanning device. Fig. 1 shows how the number of colored inks is reduced depending on the tone density of the original. The curves are given for two different typographical paints K and Kg, moreover the paint K is more saturated and corresponds to the course of the variegated colors {purple, cyan and yellow) YJ М С, and the paint K is less saturated and it corresponds to the course of the colored paints Yg Mg g As can be seen from FIG. 1, the work is completely unspotted when the product of gray tones lasts as long as possible, namely, to a gray density corresponding to the full density of the applied black ink. Starting from this value, the proportions of variegated paints in: increase to values that correspond to the proportion of variegated paints in the absence of their decrease. Here, 811 of FIG. 1 corresponds to the case when, when printing on each other with the same proportions of colored inks, no gray color is obtained. FIG. Figure 2 shows how the number of colored inks is reduced depending on the tone density of the original when it is necessary to produce a balance of colored inks over gray. FIG. Figure 3 shows an example of the implementation of the method, and reducing the number of colored inks using a color correction scanner. From the scanning head 1, which enters the primary color signals red (k), green (O) and blue (B), they enter counting device 2 colors. At the output of counting device 2 colors appear printed signals of colors - yellow (Y), magenta (M), cyan (c) and black (k), which, after passing analog-digital converter 3, are fed to the input of the circuit 4 for reducing the number of colored paints, from the output of which the signals of the colored paints modified according to the invention are fed to the input of 5, Scheme management reduced and the number of colored inks is made through inlet 6, depending on the printing method, inks and paper used. Scheme 4 for reducing the number of colored inks can be constructed as a storage device.
    SO50.
    d.2
    权利要求:
    Claims (1)
    [1]
    METHOD OF FOUR-COLOR PRINTING, in which the number of variegated inks is reduced and the amount of black printing ink is increased to compensate for this decrease, characterized in that, in order to improve the quality by reliable gray balance at a low consumption of variegated inks for reproducing gray, starting from its minimum density, printed only in black ink, and starting with a gray density equal to the total density of the applied black ink, the proportion of colorful inks increased up to the maximum density value.
    Fig. 1 m f
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1271381A3|1986-11-15|Method of four-colour printing
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    JPS5846341A|1983-03-17|Converting method for reproduced color in displaying of reproduced color of multicolor printed matter
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    US4564859A|1986-01-14|Method and an apparatus for producing color separations for single color printing
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    US4062688A|1977-12-13|Set of basic printing inks for producing color tones by printing methods
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    JPH084320B2|1996-01-17|Color image forming apparatus
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    JP2990361B2|1999-12-13|Image processing method
    JPH02147284A|1990-06-06|Gravure printing method
    JPS63212272A|1988-09-05|Input correcting method for binarization processing
    JPS6447553A|1989-02-22|Recording method of color tone
    SU1757913A1|1992-08-30|Four-color reproduction
    JPH0234871A|1990-02-05|Resolving plate producing device
    JPS60218649A|1985-11-01|Color reproducing method of color print separation plate
    同族专利:
    公开号 | 公开日
    JPS58190951A|1983-11-08|
    AT11968T|1985-03-15|
    FI831186L|1983-10-11|
    AU566148B2|1987-10-08|
    DK153783A|1983-10-11|
    DK153783D0|1983-04-07|
    CA1209401A|1986-08-12|
    FI73092B|1987-04-30|
    DE3262383D1|1985-03-28|
    FI73092C|1987-08-10|
    EP0091501A1|1983-10-19|
    JPH0572577B2|1993-10-12|
    AU1340483A|1983-10-13|
    EP0091501B1|1985-02-20|
    FI831186A0|1983-04-08|
    US4551751A|1985-11-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    BE530710A|1953-07-30|
    US2981792A|1957-10-31|1961-04-25|Fairchild Camera Instr Co|Color correction computer for engraving machines|
    US3885244A|1970-12-17|1975-05-20|Hell Rudolf Dr Ing|Method of producing color correction signals and color separation signals|
    DE3020201A1|1979-05-30|1980-12-11|Crosfield Electronics Ltd|IMAGE REPRODUCTION DEVICE|
    JPH0232618B2|1980-01-21|1990-07-23|Dainippon Screen Mfg|
    DE3109190C2|1981-03-11|1985-07-11|Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel|Process for the reproduction of colored originals in four-color printing with color removal|
    JPS6338155B2|1981-09-16|1988-07-28|Dainippon Screen Mfg|JPH0137069B2|1983-12-30|1989-08-03|Dainippon Screen Mfg|
    GB2154094B|1983-12-30|1988-10-12|Dainippon Screen Mfg|A multi-colour printing process|
    JPH0157551B2|1984-09-18|1989-12-06|Dainippon Screen Mfg|
    GB8425339D0|1984-10-08|1984-11-14|Crosfield Electronics Ltd|Reproduction of coloured images|
    DE3442955C2|1984-11-24|1988-07-28|Agfa-Gevaert Ag, 5090 Leverkusen, De|
    GB8622564D0|1986-09-19|1986-10-22|Crosfield Electronics Ltd|Reproduction of coloured images|
    JP3273204B2|1993-02-15|2002-04-08|コニカ株式会社|Color separation image processing method and apparatus for four-color printer|
    JPH0787346A|1993-09-10|1995-03-31|Fuji Xerox Co Ltd|Method and device for processing color picture|
    US5519815A|1993-11-29|1996-05-21|Xerox Corporation|Image processing method to reduce marking material coverage in printing processes|
    US5729360A|1994-01-14|1998-03-17|Fuji Xerox Co., Ltd.|Color image processing method and system|
    US5937087A|1994-07-29|1999-08-10|Canon Kabushiki Kaisha|Image processing apparatus and method thereof|
    AU6122898A|1997-02-28|1998-09-18|Roberto Olvera Camacho|Method for obtaining a tabulation to display a range of colours which can be reproduced with accuracy|
    AU6122998A|1997-02-28|1998-09-18|Roberto Olvera Camacho|Formulations of positive films in order to obtain the selection of colors by means of primary balanced colors, and method for obtaining such formulations|
    US6081340A|1997-03-31|2000-06-27|Xerox Corporation|Image processing method to reduce marking material coverage with non-linear specifications|
    US6169609B1|1998-06-09|2001-01-02|Hewlett-Packard Company|Imaging device and method for implementing a color map with K-only black point while reducing interpolator artifacts|
    US7019868B2|2000-12-19|2006-03-28|Sharp Laboratories Of Ameirca, Inc.|Black generation method for CMYK color printer using multiple lookup tables and interpolation|
    JP3870143B2|2002-09-27|2007-01-17|キヤノン株式会社|Information processing method|
    US20060092439A1|2004-11-02|2006-05-04|Kabushiki Kaisha Toshiba|Printer controller, image forming apparatus, image forming program|
    US7573608B2|2005-11-14|2009-08-11|Sun Chemical Corporation|Method of estimating trap from spectral reflectance factor|
    US7573611B2|2006-04-04|2009-08-11|Onyx Graphics, Inc.|Gamut maximizing black generation for printers|
    US8270028B2|2007-09-27|2012-09-18|Agfa Graphics Nv|Method for creating a color link|
    US8892466B2|2013-01-24|2014-11-18|Xerox Corporation|Systems and methods for modifying color characteristics of an image|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    EP19820103090|EP0091501B1|1982-04-10|1982-04-10|Four-color printing method with tone-value-dependent colour removal|
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