Method for optimising flexographic negatives
    90.
    发明申请
    Method for optimising flexographic negatives 审中-公开
    优化柔性版本的方法

    公开(公告)号:US20150183205A1

    公开(公告)日:2015-07-02

    申请号:US14142883

    申请日:2013-12-29

    Applicant: Paul Mayo Holt

    Inventor: Paul Mayo Holt

    CPC classification number: G03F7/201 G03F7/2002

    Abstract: The invention provides an improved method of imaging analogue flexographic liquid and sheet printing plates. Specifically it involves adding colour or greyscale to some of the clear parts of negatives used to make flexographic plates. This colour moderates the light allowed through the clear areas, keeping reverses open to the maximum depth possible, preventing the widening or overexposure of relief and reverse whilst allowing the maximum amount of light through the small clear areas making the fine relief. It does this by calculating the correct amount of light for each part of the negative according to the predicted amount of light that will be transmitted through it, adjusting the intensity of colour accordingly. It provides a technical advantage of using a negative over the digital process, widening the amount of information available to create the printing plate from just black and white. It enables the plate maker to achieve an optimal printing plate independent of design. The incorporation of a half tone screen over the selective colour enhances total ink delivered. The screen can also level out intensity irregularities in intensities in the exposure units.

    Abstract translation: 本发明提供了一种成像模拟柔版印刷液体和片状印刷版的改进方法。 具体来说,它涉及到用于制作柔版印版的底片的一些清晰部分添加颜色或灰度。 这种颜色调节了通过透明区域允许的光线,保持反向打开到最大深度,防止放宽和过度曝光和反转,同时允许最大量的光通过小的透明区域,使细微的浮雕。 这是通过根据预测的通过其传输的光量来计算负的每个部分的正确光量,相应地调整颜色的强度。 它提供了在数字处理中使用负面的技术优势,从仅仅黑白加宽了可用于创建印版的信息量。 它使印版机能够实现独立于设计的最佳印版。 半色调屏幕结合选择性颜色增强了总输墨量。 屏幕还可以平衡曝光单元强度的强度不均匀性。

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