Method of controlling exposure of process camera
    4.
    发明公开
    Method of controlling exposure of process camera 失效
    控制过程相机曝光的方法

    公开(公告)号:EP0492672A3

    公开(公告)日:1993-03-10

    申请号:EP91122376.6

    申请日:1991-12-30

    IPC分类号: G03F5/00 G03B27/66

    CPC分类号: G03B27/72 G03B27/66

    摘要: A method of controlling exposure prepares basic data and original data, prepares data for correction for determining a correction amount of the original data, obtains first dot image, obtains dot percentage differences 6 H and δ S between dot percentages of a highlight region and a shadow region of the first dot image, respectively, and a desired highlight dot percentage and a shadow dot percentage, obtains a correction amount of the original data based on δ H and δ S and the data for correction to update the basic data based on the correction amount of the original data, and acquires an exposure amount for obtaining second dot image based on the updated basic data and the original data. An apparatus for implementing this method is also disclosed.

    Measuring strip
    5.
    发明公开
    Measuring strip 失效
    Messstreifen。

    公开(公告)号:EP0437867A1

    公开(公告)日:1991-07-24

    申请号:EP90200144.5

    申请日:1990-01-19

    IPC分类号: G03C5/02 G03B27/72 G03F5/00

    CPC分类号: G03C5/02

    摘要: A measuring strip which contains on a transparent base a test field divided into at least two sub-fields, wherein (1) a first sub-field (F₁) contains a plurality of individual areas each containing a group of opaque dots, wherein each individual area has dots of substantially equal size uniformly distributed in a transparent background area, and wherein (2) a second sub-field (F₂) contains a plurality of individual areas each containing a group of transparent dots (holes), wherein each individual area has transparent dots of substantially equal size uniformly distributed in an opaque background area, and wherein in each individual area containing (opaque or transparent) dots having substantially the same dot size the dots are at substantially equal distance from each other, so that an area containing dots of smaller size compared with another area containing dots with larger size contains more dots than said area containing dots of larger size, and wherein the transmission of said first and second sub-field being expressed in percentage is different by at least 10 %.

    摘要翻译: 一种测量条,其在透明基底上包含被划分为至少两个子场的测试场,其中(1)第一子场(F1)包含多个独立区域,每个区域包含一组不透明点,其中每个个体 区域具有均匀分布在透明背景区域中的基本相同尺寸的点,并且其中(2)第二子场(F2)包含多个各自包含一组透明点(空穴)的各个区域,其中每个单独区域具有 基本上相同尺寸的透明点均匀地分布在不透明背景区域中,并且其中在每个单独区域中包含具有基本上相同的点尺寸的(不透明或透明)点,所述点彼此基本上相等的距离,使得包含点 与包含较大尺寸的点的另一区域相比,包含比包含较大尺寸的点的所述区域更多的点,并且其中所述冷杉 t和第二子场以百分比表示至少10%。

    SCREEN GRAVURE ENGRAVING METHOD FOR ELECTROMECHANICAL ENGRAVERS.
    6.
    发明公开
    SCREEN GRAVURE ENGRAVING METHOD FOR ELECTROMECHANICAL ENGRAVERS. 失效
    BILDSCHIRMGRAVIERUNGSVERFAHRENFÜRELEKTROMECHANISCHE GRAVIERER。

    公开(公告)号:EP0144315A4

    公开(公告)日:1987-09-07

    申请号:EP83902196

    申请日:1983-06-03

    摘要: A method and associated apparatus for converting halftone and screened films (12A and 12B) for use with electromechanical gravure engravers (22), comprising the steps of positioning an array (26) of photosensitive elements adjacent at least one film (12A) having an image thereon in the form of transparent and opaque picture elements (pixels) (30 and 32) having predetermined dimensions, affecting relative movement between the array (26) and the film (12A) for sampling a plurality of pixels of the film by the array (26), assigning a predetermined number of photosensitive elements to a predetermined width of pixels, effectively creating a first sample area (34) bounded by the predetermined width of pixels and a pre-established number of samples, effectively creating a second sample area (36) smaller than the first sample area (34) and bounded by a plurality of pixels, the center of the second sample area (36) being coincident with that of the first sample area (34), counting the photosensitive elements which provide signals indicating transparent pixel areas within the first sample area (34), counting the photosensitive elements which provide signals indicating transparent pixel areas within the second sample area (36), adding the count of the photosensitive elements of the second sample area (36) to the count of the photosensitive elements of the second sample area (36) minus the count of the first sample area (34) to provide a signal representing the percentage dot area (PDA) for use with an electromechanical gravure engraver (22).

    摘要翻译: 一种用于转换与机电凹版雕刻机(22)一起使用的半色调和屏蔽薄膜(12A和12B)的方法和相关装置,包括以下步骤:将光敏元件阵列(26)与至少一个具有图像的薄膜(12A) 其以具有预定尺寸的透明且不透明的图像元素(像素)(30和32)的形式影响阵列(26)和膜(12A)之间的相对运动,以通过阵列对膜的多个像素进行采样 将预定数量的光敏元件分配给预定宽度的像素,有效地产生由预定宽度的像素和预定数量的样本界定的第一样本区域(34),有效地产生第二样本区域(36) )小于所述第一样本区域(34)并且由多个像素界定,所述第二样本区域(36)的中心与所述第一样本区域(34)的中心重合,对所述第一样本区域 其提供指示第一采样区域(34)内的透明像素区域的信号,计数提供指示第二采样区域(36)内的透明像素区域的信号的光敏元件,将第二采样区域 (36)与第二采样区域(36)的光敏元件的计数减去第一采样区域(34)的计数以提供表示与机电凹版雕刻机(22)一起使用的百分比点区域(PDA)的信号 )。

    Method for making a lithographic printing plate
    9.
    发明公开
    Method for making a lithographic printing plate 失效
    Verfahren zur Herstellung einer石版画家Druckplatte

    公开(公告)号:EP0691577A1

    公开(公告)日:1996-01-10

    申请号:EP95201272.2

    申请日:1995-05-16

    IPC分类号: G03F7/07 H04N1/40 G03F5/00

    CPC分类号: H04N1/4051 G03F5/00 G03F7/07

    摘要: There is provided a method for making a lithographic printing plate from an original containing continuous tones comprising the steps of:

    frequency modulation screening said original to obtain screened data
    image-wise exposing according to said screened data a negative working photosensitive lithographic printing plate precursor containing a photosensitive layer comprising a direct positive silver halide emulsion and an image receiving layer comprising physical development nuclei in water permeable contact with each other, said lithographic printing plate precursor having a surface capable of being differentiated in ink accepting and ink repellant areas upon said image-wise exposure and an development step and
    developing a thus obtained image-wise exposed lithographic printing plate precursor using an alkaline processing liquid in the presence of developing agent(s) and silver halide solvent(s), characterized in that said photosensitive layer comprises a spectrally sensitized prefogged direct positive silver halide emulsion with exterior electron-traps whereof the amount of silver bromide lies in the range between 0.5 mole/mole AgX and 5 mole/mole AgX.

    摘要翻译: 提供了一种从包含连续色调的原稿制造平版印刷版的方法,包括以下步骤:对所述原稿进行频率调制筛选,以根据所述筛选数据获得屏幕数据成像曝光,其中负性感光平版印刷版原版含有 包含直接正卤化银乳剂的感光层和包含彼此在水中可渗透接触的物理显影核的图像接收层,所述平版印刷版原版具有能够在所述成像方式上具有墨水接受和墨水排斥区域的差异的表面 曝光和显影步骤,并且在显影剂和卤化银溶剂的存在下,使用碱性处理液显影由此获得的图像曝光的平版印刷版原版,其特征在于,所述感光层包含光谱增感剂 prefogged 具有外部电子捕获器的直接正卤化银乳剂,其中溴化银的量在0.5摩尔/摩尔AgX和5摩尔/摩尔AgX之间的范围内。

    Forme d'impression pour procédé d'impression typographique et utilisation de la forme pour l'impression sur des surfaces dures non absorbantes
    10.
    发明公开
    Forme d'impression pour procédé d'impression typographique et utilisation de la forme pour l'impression sur des surfaces dures non absorbantes 失效
    用于凸版印刷工艺的印刷表格和用于在非吸收性硬质表面上印刷的表格

    公开(公告)号:EP0635378A3

    公开(公告)日:1995-11-29

    申请号:EP94401651.8

    申请日:1994-07-19

    IPC分类号: B41M1/00 G03F5/00 B41M1/04

    摘要: Pour l'impression de matières à imprimer dures formées d'un matériau non absorbant, en particulier pour l'impression de feuilles de verre (18), on propose le recours au procédé flexographique. A cet effet, on utilise une forme d'impression (3) faite d'une plaque de photopolymère qui présente une image imprimante tramée comportant une fine trame superposée à la trame de fond ou de motif. La forme d'impression (3) est constituée d'une feuille de stabilisation (30) et de la couche de photopolymère (31) munie de la trame. Une plaque (33), en matière expansée, est intercalée entre la forme d'impression (3) et le corps du cylindre porte-cliché (4). L'invention permet, lors de l'impression de surfaces dures non absorbantes, un transfert uniforme et plus régulier de l'encre à l'intérieur de chaque point d'impression particulier.

    摘要翻译: 为了印刷由非吸收性材料形成的硬印刷材料,特别是用于玻璃板(18)的印刷,提出了使用柔性版印刷方法。 为此目的,使用由感光聚合物板制成的印模(3),其具有在背景或图案框架上叠加有精细场的光栅印刷图像。 印版(3)由稳定片(30)和设有纬线的感光聚合物层(31)组成。 在印版(3)和印版滚筒(4)的主体之间插入泡沫材料板(33)。 当印刷非吸收性硬表面时,本发明可以在每个特定印刷点内均匀且更均匀地转移油墨。