Method to reduce unprinted substrate waste during digital printing
    231.
    发明公开
    Method to reduce unprinted substrate waste during digital printing 有权
    Verfahren zur Reduzierung von unbedrucktem Substratabfall beim Digitaldrucken

    公开(公告)号:EP1933257A1

    公开(公告)日:2008-06-18

    申请号:EP06125855.4

    申请日:2006-12-12

    Abstract: A method for printing more than one print job on a web based printer divides the web into logical print zones. Print jobs are assigned to different print zones by a multiplexer. The width and length of the print zones can vary during the printing as function of the print jobs. The method reduces the waste of unprinted substrate.

    Abstract translation: 在基于Web的打印机上打印多个打印作业的方法将网络划分为逻辑打印区域。 打印作业由多路复用器分配给不同的打印区域。 作为打印作业的功能,打印区域的宽度和长度可以在打印期间变化。 该方法减少了未印刷底物的浪费。

    Non-aqueous pigmented inkjet inks
    233.
    发明公开
    Non-aqueous pigmented inkjet inks 有权
    Nichtwässrigepigmentierte Tintenstrahldruckfarben

    公开(公告)号:EP1911813A1

    公开(公告)日:2008-04-16

    申请号:EP06122091.9

    申请日:2006-10-11

    CPC classification number: C09D11/101

    Abstract: A non-aqueous inkjet ink comprising C.I. Pigment Yellow 150 and a polymeric dispersant according to Formula (I):

    wherein,
    T represents hydrogen or a polymerization terminating group;
    Z represents the residue of polyethyleneimine having a number-average molecular weight of at least 100;
    A represents an oxyalkylene carbonyl group;
    T-C(O)A n - represents a TPOAC-chain which is bound to Z through an amide bond; and
    n and m are integers wherein m is at least 2 and n is from 2 to 100;
    characterized in that the polymeric dispersant fulfills the conditions of: W TPOAC > 57 ⁢ and N Amide ≧ 65 mol %
    with
    W TPOAC representing the ratio of the weight percentage of TPOAC-chains over the weight percentage of amide bonds in the polymeric dispersant;
    N Amide representing the mol% of amide bonds based on the total nitrogen content of the polymeric dispersant; and
    wherein the values of W TPOAC and N Amide are calculated from the total nitrogen content determined by dry combustion of the polymeric dispersant and from the amine content determined through potentiometric titration in a mixture of CH 3 COOH:THF (14.5:0.5) with 0.1 N aqueous perchloric acid.

    Abstract translation: 包含C.I.的非水性喷墨油墨。 颜料黄150和根据式(I)的聚合物分散剂:其中,T表示氢或聚合终止基团; Z表示数均分子量为100以上的聚乙烯亚胺的残基; A表示氧化烯羰基; T-C(O)A n - 表示通过酰胺键与Z结合的TPOAC-链; 并且n和m是其中m为至少2且n为2至100的整数; 其特征在于聚合物分散剂满足以下条件:W TPOAC> 57 ¢和N酰胺‰§65 mol%,W TPOAC代表TPOAC链的重量百分比与聚合物分散剂中酰胺键的重量百分比的比率 ; N酰胺基于聚合物分散剂的总氮含量表示酰胺键的摩尔%; 并且其中W TPOAC和N酰胺的值是根据通过聚合物分散剂的干燃烧确定的总氮含量和通过在CH 3 COOH:THF(14.5:0.5)与0.1的混合物中电位滴定测定的胺含量来计算的 N高氯酸盐。

    Method of operating an inkjet print head
    234.
    发明公开
    Method of operating an inkjet print head 有权
    Verfahren zur Steuerung eines Tintenstrahldruckkopfes

    公开(公告)号:EP1911594A1

    公开(公告)日:2008-04-16

    申请号:EP06122178.4

    申请日:2006-10-12

    Abstract: A method for operating an inkjet print head is presented. The inkjet print head has an ink chamber (15) and electrically actuable means (2,3) associated with the ink chamber and actuable in accordance with print tone data, thereby to eject a number of successive ink droplets from the ink chamber (15) to form a printed dot of appropriate tone on the receiving medium. The method includes the step of providing print tone data to the inkjet print head so as to eject either zero or at least two successive ink droplets from the ink chamber (15) in response to the print tone data. The method thereby avoids the use of a single-droplet drop which generally has deviating ejection characteristics compared to multi-droplet drops.

    Abstract translation: 提出了一种操作喷墨打印头的方法。 喷墨打印头具有与墨水室相关联并且可根据打印色调数据致动的墨水室(15)和电致动装置(2,3),从而从墨水室(15)喷出多个连续的墨滴, 以在接收介质上形成适当音调的打印点。 该方法包括向喷墨打印头提供打印色调数据的步骤,以响应于打印色调数据从墨水室(15)中弹出零个或至少两个连续的墨滴。 该方法从而避免使用与多滴滴相比通常具有偏离喷射特性的单液滴。

    PIGMENT DISPERSIONS WITH POLYMERIC DISPERSANTS HAVING PENDING CHROMOPHORE GROUPS
    235.
    发明公开
    PIGMENT DISPERSIONS WITH POLYMERIC DISPERSANTS HAVING PENDING CHROMOPHORE GROUPS 有权
    聚合物分散剂带有色素组的色素分散体

    公开(公告)号:EP1904581A2

    公开(公告)日:2008-04-02

    申请号:EP06777429.9

    申请日:2006-06-23

    Abstract: A pigment dispersion comprising a colour pigment and a polymeric dispersant having at least one pending chromophore group covalently bound to the polymeric backbone of the polymeric dispersant through a linking group wherein the colour pigment is selected from the group consisting of monoazo pigments, disazo pigments, β-naphtol pigments, naphtol AS pigments, azo pigment lakes, benzimidazolone pigments, disazo condensation pigments, metal complex pigments, isoindolinone pigments, isoindolinine pigments, phthalocyanine pigments, quinacridone pigments, diketopyrrolo-pyrrole pigments, thioindigo pigments, anthraquinone pigments, anthrapyrimidine pigments, indanthrone pigments, flavanthrone pigments, pyranthrone pigments, anthanthrone pigments, isoviolanthrone pigments, aluminium pigment lakes, dioxazine pigments, triarylcarbonium pigments and quinophthalone pigments; the at least one pending chromophore group has a molecular weight which is smaller than 85 % of the molecular weight of the colour pigment; the at least one pending chromophore group occurs as a side group on the polymeric backbone and not as a group in the polymeric backbone itself or occurring solely as an end group of the polymeric backbone; the linking group consists of all the atoms between the polymeric backbone and the first atom of the aromatic group by which the pending chromophore group is linked to the polymeric backbone; and the at least one pending chromophore group has a similarity coefficient SIM of at least 0.75, with the similarity coefficient defined by (I) wherein, M represents the number of atoms in the at least one pending chromophore group; P represents the number of atoms in the colour pigment; C represents the largest number of atoms in common between the at least one pending chromophore group and the colour pigment as one continuous structure; and t is an integer representing the number of times that the largest number of atoms in common C fits into the organic colour pigment, without using atoms of the colour pigment twice. A method for preparing the pigment dispersion wherein the polymeric dispersant is prepared by copolymerizing a monomer already containing the pending chromophore group is also disclosed.

    Abstract translation: 一种颜料分散体,包含有色颜料和聚合物分散剂,所述聚合物分散剂具有至少一个通过连接基团与聚合物分散剂的聚合物骨架共价结合的未决发色团,其中所述有色颜料选自单偶氮颜料,双偶氮颜料,β 萘酚AS颜料,偶氮颜料色淀,苯并咪唑酮颜料,双偶氮缩合颜料,金属络合物颜料,异吲哚啉酮颜料,异吲哚啉颜料,酞菁颜料,喹吖啶酮颜料,二酮吡咯并吡咯颜料,硫靛颜料,蒽醌颜料,蒽嘧啶颜料, 颜料,黄烷士酮颜料,皮蒽酮颜料,蒽嵌蒽醌颜料,异紫蒽酮颜料,铝颜料色淀,二恶嗪颜料,三芳基碳鎓颜料和喹酞酮颜料; 该至少一个未决发色团的分子量小于该有色颜料的分子量的85% 该至少一个未决发色团作为聚合物主链上的侧基而不是作为聚合物主链自身中的基团存在或者仅作为聚合物主链的端基存在; 连接基团由聚合物主链和芳族基团的第一个原子之间的所有原子组成,未决发色团通过该原子连接到聚合物主链上; 并且所述至少一个未决发色团具有至少0.75的相似系数SIM,其中由(I)定义的所述相似系数其中,M表示所述至少一个未决发色团中的原子数目; P表示彩色颜料中的原子数目; C表示作为一个连续结构的至少一个未决发色团和彩色颜料之间共有的最大原子数; 而t是一个整数,表示在不使用彩色颜料的原子两次的情况下,公共C中的最大原子数符合有机彩色颜料的次数的整数。 还公开了一种制备颜料分散体的方法,其中聚合物分散剂通过共聚已经含有未决发色团的单体制备。

    Lithographic printing plates comprising bi-functional compounds.
    240.
    发明公开
    Lithographic printing plates comprising bi-functional compounds. 有权
    含有双官能化合物的平版印刷版

    公开(公告)号:EP1787810A3

    公开(公告)日:2007-12-05

    申请号:EP06121704.8

    申请日:2006-10-04

    CPC classification number: B41C1/1041

    Abstract: A heat-sensitive lithographic printing plate precursor comprising on a grained and anodized aluminum support a compound which is capable of converting form a hydrophobic state to a hydrophilic state or vice versa upon exposure to heat, and is represented by the following formula:

            A-(L) n -B

    wherein L represents a linking group, n represents 0 or 1 and B represents a thermo-labile group;
    characterized in that the compound further comprises the group A which is a functional group capable of interacting with the surface of a grained and anodized aluminum support and is selected from the list consisting of a halosilanyl group, an alkoxysilanyl group, a phosphonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a salicylic acid group or a salt thereof, a boronic acid group or an ester or a salt thereof, an optionally substituted di or tri-hydroxyaryl group, an optionally substituted salicaldoxime group, an optionally substituted salicaldimine group, an optionally substituted hydroxyheteroaryl group, an amidine group, a 1,3-dicarbonyl group or a group represented by the formula (i)

    wherein Q and Z independently represent the necessary atoms to form an optionally substituted five or six membered aromatic or heteroaromatic ring.

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