摘要:
This invention provides an improved negative-working or positive-working, single sheet color proofing method which can accurately reproduce images by using colored, photosensitive layers on substrates which are then overcoated with partially developable adhesive layers. The final construction is useful in predicting the image quality from a lithographic printing process. The partial removal of the adhesive layers cleans out any background stain which may remain from the incomplete removal of the photosensitive layer.
摘要:
A light-sensitive material for producing color-test films for multi-color printing is disclosed. The material has (A) a transparent flexible base film of a plastic, (B) a photopolymerizable layer containing (B1) a polymeric binder, (B2) a compound polymerizable by a free-radical mechanism, (B3) a compound capable of initiating the polymerization of (B2) under the action of actinic light, and (B4) a dye or a colored pigment in one of the basic colors of multi-color printing, and (C) a thermoplastic adhesion layer on the light-sensitive layer is described. A polymer of a vinyl alkyl ether is present in at least one of the layers (B) and (C). The material is processed by lamination to an image-receiving material, with subsequent exposure and peeling-apart of base film and image-receiving material. The unexposed layer areas remain together with the adhesion layer on the image-receiving material. These steps are repeated with at least one further part-color image. The material gives improved image resolution and has improved storage stability in the unexposed state.
摘要:
A photosensitive material for the production of color proofing films for multicolor printing, having(A) a transparent, flexible film support of plastic,(B) a photopolymerizable layer which contains(B1) a polymeric binder,(B2) a free-radically polymerizable compound,(B3) a compound which is capable of initiating the polymerization of (B2) on exposure to actinic light, and(B4) a dye or a colored pigment in a primary color of multicolor printing, and(C) a thermoplastic adhesive layer having a layer weight of from about 2 to about 30 g/m.sup.2 on the photo-sensitive layer, wherein the thermoplastic adhesive layer contains from about 0.01 to about 0.5% by weight of a colorless pigment having a mean particle size which corresponds to from 1 to 100% of the layer thickness.The material is processed by lamination onto an image-receiving material, exposure of the material and peeling apart of film support and image-receiving material, leaving the unexposed layer areas on the image-receiving material together with the adhesive layer. To produce a multicolored image, these steps are repeated with at least one further single-color sheet. The material has higher stability against blocking during lamination and storage.
摘要翻译:一种用于制造用于多色印刷的防色薄膜的感光材料,其具有(A)透明的柔性塑料薄膜载体,(B)含有(B1)聚合物粘合剂的可光聚合层,(B2)可自由基聚合的 化合物,(B3)能够在曝光于光化光下引发(B2)聚合的化合物,和(B4)多色印刷原色的染料或着色颜料,(C)热塑性粘合剂层 在感光层上具有约2至约30g / m 2的层重量,其中热塑性粘合剂层含有约0.01至约0.5重量%的平均粒度对应于1的无色颜料 到100%的层厚度。 该材料通过层压到图像接收材料上,曝光材料并剥离薄膜载体和图像接收材料,将图像接收材料上的未曝光层区域与粘合剂层一起留下。 为了产生多色图像,这些步骤与至少一个另外的单色片重复。 该材料在层压和储存期间具有较高的抵抗阻塞的稳定性。
摘要:
A light-sensitive material for producing color-test films for multi-color printing is disclosed. The material has (A) a transparent flexible base film of a plastic, (B) a photopolymerizable layer containing (B1) a polymeric binder, (B2) a compound polymerizable by a free-radical mechanism, (B3) a compound capable of initiating the polymerization of (B2) under the action of actinic light, and (B4) a dye or a colored pigment in one of the basic colors of multi-color printing, and (C) a thermoplastic adhesion layer on the light-sensitive layer is described. A polymer of a vinyl alkyl ether is present in at least one of the layers (B) and (C). The material is processed by lamination to an image-receiving material, with subsequent exposure and peeling-apart of base film and image-receiving material. The unexposed layer areas remain together with the adhesion layer on the image-receiving material. These steps are repeated with at least one further part-color image. The material gives improved image resolution and has improved storage stability in the unexposed state.
摘要:
An apparatus for separating and drawing off a film from a laminate, the laminate including the film and a carrier material upon which the film is laminated. The apparatus includes a first plate; a second plate being disposed above the first plate; a motor; a spindle being operatively connected to the motor; a separating apparatus being movable along the spindle above the first plate and including a wedge-shaped separating knife; a gap which lies above and parallel to the separating knife and which is inclined at an oblique angle relative to a horizontal plane; and a stay passing vertically through the first plate which holds an underside of the laminate firmly in place. The laminate rests on the first plate, and the separating apparatus moves into engagement with a corner of the film such that the film corner is detached from the carrier material and is threaded into the gap. The stay holds the underside of the laminate firmly in place when the film corner is threaded into the gap.
摘要:
This invention relates to a single positive or negative working photosensitive layer on a substrate which, upon exposure to an actinic radiation source through a screened image, can accurately reproduce said image after processing and lamination. The construction is useful as a color proofing film which can be employed to predict the image quality from a lithographic printing process.
摘要:
The invention provides a photographic article having a protected image which comprisesa) a colored image disposed on a substrate; andb) a thin, transparent, colorless, thermoplastic adhesive composition directly on the surface of the image, wherein said adhesive is substantially non-tacky at room temperature, and comprises one or more thermoplastic polymers of copolymers capable of forming a flexible film, said adhesive being capable of being transferred directly to the image when the adhesive is first disposed on the release surface of a temporary support and said image and adhesive are laminated together under pressure at temperatures of between about 60.degree. C. and about 90.degree. C. and said temporary support is peeled away; andc) a non-self supporting antiblocking layer directly on said adhesive said antiblocking layer being transparent, colorless and comprises one or more organic polymers or copolymers, which coating does not cohesively block at about 50.degree. C. or less.
摘要:
This invention relates to an improved negative- or positive-working, single sheet color proofing method which can accurately reproduce said images on diverse paper stocks by using a carrier to transfer the processed images to paper receiver bases. The final construction is useful in predicting the image quality from a lithographic printing process.
摘要:
This invention relates to a method for making a dry transfer, photopolymerizable positive-working imaging system which provides a photopolymerizable layer on a support and a colored layer on a substrate. Upon imagewise exposure of the photopolymerizable layer, subsequent lamination of the colored layer to the photopolymerized layer and peel apart, a colored image is produced due to the preferred adhesion of the colored layer to the nonexposed areas of the photopolymerized layer.
摘要:
This invention relates to positive working photosensitized sheet constructions which, upon exposure to an actinic radiation source through a screened image, can accurately reproduce said image. The construction is useful as a color proofing film which can be employed to predict the image quality from a lithographic printing process.