摘要:
A thermosensitive lithographic printing plate comprising: a hydrophilic support; a lower layer comprising a water-insoluble and alkali-soluble resin; and an upper thermosensitive layer comprising a water-insoluble and alkali-soluble resin and an infrared absorbing dye, whose dissolution in an alkaline aqueous solution increases upon exposure, wherein a surface of the upper thermosensitive layer has protrusions caused by ununiformity of thickness of the upper thermosensitive layer in a proportion of 0.1 or more and not more than 7 per nullm2 or the upper thermosensitive layer comprises at least two alkali-soluble resins having a different dissolution speed in an alkaline aqueous solution from each other, and the at least two alkali-soluble resin cause phase separation from each other.
摘要翻译:一种热敏平版印刷版,包括:亲水载体; 包含水不溶性和碱溶性树脂的下层; 以及包含水不溶性和碱溶性树脂和红外吸收染料的上部热敏层,其在碱性水溶液中的溶解在曝光时增加,其中上部热敏层的表面具有由上部的热塑性树脂的厚度不均匀引起的突起 热敏层的比例为0.1或更大且不超过7 / m 2或上部热敏层包含至少两种在碱性水溶液中彼此溶解速度不同的碱溶性树脂,至少 两种碱溶性树脂引起相分离。
摘要:
A print control for flexographic printing, particularly a flexographic printing form comprising a print control element, and a process for producing such a flexographic printing form.
摘要:
The present invention is directed to a photo-sensitive laminate film for use in making an image mask for etching an image on a substrate. In a first preferred embodiment, the photo-sensitive laminate film comprises a support sheet having a first surface and a second surface, a layer of polymer resin composition having photocrosslinkability, the layer of polymer resin composition having a first surface and a second surface, and a fractionally-releasable bonding layer located between the first surface of the support sheet and the second surface of the layer of polymer resin composition. Upon the creation of an image mask from the layer of polymer resin composition, the image mask is capable of being separated from the first surface of the support sheet such that at least a portion of the bonding layer located between the image mask and the first surface of the support sheet is released from the support sheet with the image mask, and the remaining portion of the bonding layer remains with the support sheet. In use, the image mask, defined by a predetermined pattern, can be operatively attached to a substrate, the support sheet can be removed, and the substrate can be etched (e.g., either by sandblasting or by the application of a chemical etching solution) with an image corresponding inversely to the predetermined pattern of the image mask.
摘要:
The present invention is directed towards contact planarization methods that can be used to planarize substrate surfaces having a wide range of topographic feature densities for lithography applications. These processes use thermally curable, photo-curable, or thermoplastic materials to provide globally planarized surfaces over topographic substrate surfaces for lithography applications. Additional coating(s) with global planarity and uniform thickness can be obtained on the planarized surfaces. These inventive methods can be utilized with single-layer, bilayer, or multi-layer processing involving bottom anti-reflective coatings, photoresists, hardmasks, and other organic and inorganic polymers in an appropriate coating sequence as required by the particular application. More specifically, this invention produces globally planar surfaces for use in dual damascene and bilayer processes with greatly improved photolithography process latitude. The invention further provides globally planar surfaces to transfer patterns using imprint lithography, nano-imprint lithography, hot-embossing lithography and stamping pattern transfer techniques.
摘要:
A thermally imagable article comprises a substrate on which is coated a positive working heat-sensitive composition comprising a hydroxyl group-containing polymer and a heat-labile moiety which decreases the developer solubility of the composition as compared to the developer solubility of the composition without the heat-labile moiety, wherein the heat-sensitive composition does not comprise an acid generating moiety. The invention also provides novel positive working compositions comprising heat-labile moieties, and imagable articles comprising said compositions.
摘要:
A presensitized plate comprising a support for a lithographic printing plate including an anodized layer formed on an aluminum plate and a recording layer recordable by infrared laser exposure on the support, wherein in a section of the anodized layer after the recording layer is provided, an atomicity ratio of carbon to aluminum (C/Al) represented by Auger Electron Spectroscopic analysis is 1.0 or less. In the case of being used as an on-machine development type, it exhibits a good on-machine development characteristic, a high sensitivity, a high press life, and high scum resistance during printing and while left (ink discharging). In the case of being used as a conventional thermal positive or negative working type, it exhibits an efficient use of heat for image formation, a high sensitivity, a high press life, and a slight possibility of scum occurrence at non-image areas.
摘要:
The present invention provides a method of preparing a lithographic printing plate, said method comprising: providing a lithographic printing plate precursor comprising: i) a grained and anodized aluminum substrate where the anodic weight is between 6.0 and 20 g/m2, having coated thereon; ii) a metallic layer; and image-wise exposing the precursor on an external drum thermal imaging device. The method provides press ready plates showing high image quality, good press properties and high durability on press without the requirement for the use of costly intermediate film and developer chemistry, and the attendant inconvenience resulting from the use of these materials.
摘要翻译:本发明提供一种制备平版印刷版的方法,所述方法包括:提供平版印刷版前体,其包括:i)在其上涂覆有阳极重量为6.0至20g / m 2的颗粒和阳极氧化铝基材; ii)金属层; 并且在外部鼓热成像装置上成像地将前体曝光。 该方法提供了印刷机准备板,其显示出高图像质量,良好的压制性能和高耐久性,而不需要使用昂贵的中间膜和显影剂化学品,以及由于使用这些材料而引起的不便。
摘要:
In accordance with the present invention there is provided an imaging element for lithographic offset printing. The imaging element comprises hydrophobic polymer particles in an aqueous medium, a substance for converting light into heat and an organic base. The imaging element may be used for printing long run lengths on lower quality paper and in the presence of set-off powder. The imaging element may be imaged and developed on-press and may be sprayed onto a hydrophilic surface to create a printing surface that may be processed wholly on-press. The hydrophilic surface may be a printing plate substrate or the printing cylinder of a printing press or a seamless sleeve around the printing cylinder of a printing press. This cylinder may be conventional or seamless.
摘要:
The present invention relates to a presensitized plate useful for making a lithographic printing plate comprising an intermediate layer and a photopolymerizable photosensitive layer on an aluminum substrate in this order, wherein the roughness of a surface of said aluminum substrate (Ra) is in the range of 0.2 to 0.55 nullm and the intermediate layer comprises a polymer compound comprising at least one monomer unit having a sulfonic acid group and a method for making a lithographic printing plate by imagewise exposing the presensitized plate described above and developing the imagewise exposed presensitized plate with a developer comprising an inorganic alkali salt and a nonionic surfactant comprising a polyoxyalkylene ether group. The presensitized plate or the method of the present invention provides a lithographic printing plate showing good contrast between an image area and non-image area, no background contamination during printing, good stability with time and good printing durability.
摘要:
The present invention provides a lithographic printing plate comprising on a roughened substrate a substantially conformal photosensitive layer and a substantially conformal overcoat. The photosensitive layer is substantially conformally coated on the roughened substrate surface and the overcoat is substantially conformally coated on the photosensitive layer surface so that the surface of the overcoat has peaks and valleys substantially corresponding to the major peaks and valleys of the substrate microscopic surface. The lithographic plate of such a configuration can provide no or low tackiness and excellent block resistance, while allowing excellent press durability. For on-press developable lithographic plate, such a plate configuration also allows excellent on-press developability.