摘要:
A machine train includes a drive unit, preferably a steam turbine with axial exhaust flow, a geared turbine machine, and an additional compressor. The geared turbine machine has an integrated gear train with a drive pinion for driving turbine machine rotors via a large gear, and an output pinion of a rotational speed reduction power gear for driving the additional compressor.
摘要:
A negative-working, radiation-sensitive mixture is provided which contains an organic polymeric binder and a substance which converts radiant energy into heat, wherein the polymeric binder essentially comprises units of the formula (I): in which R1 is a hydrogen atom or a (C1-C4) alkyl radical, X is a single bond or a (q+1)-valent radical of a (C4-C10) alkane, in which individual methylene groups may be replaced by hetero atoms, of a (C2-C8) alkene or of an isocyclic or heterocyclic, saturated or unsaturated, mono- or polycyclic (C6-C10) ring or ring system, n is from 40 to 80 mol %, m is from 15 to 30 mol %, p is from 1 to 10 mol % and q is an integer from 1 to 3, where q is equal to 1 when X is a single bond, and the polymeric binder has an acid number of from 5 to 150. A recording material comprising a substrate and a layer of this mixture, and a process for the production of a color proof are also provided.
摘要:
A process for producing a colored image by laminating a light-sensitive material comprising a temporary support film (i), a colored light-sensitive layer and a heat-activable adhesive layer onto an image-receiving material at elevated temperature and under pressure, subjecting the light-sensitive layer to imagewise exposure and developing by peeling off the support film, characterized in that the image-receiving material comprises a light-sensitive compound which, on irradiation, releases a gas which remains trapped in the image-receiving material in the form of gas bubbles. The advantage of the process is that, on irradiation under a halftone original, the size of the halftone dots in the coloured image produced on such an image-receiving material is optically reduced.
摘要:
A method for producing a positive as well as a negative multicolor color-proof image.The invention relates to a color proofing process in which a multicolor image is produced from a plurality of single-color images in register with the aid of a colored, photosensitive, photopolymerizable material on an image-receiving material. Depending on the processing variant, both positive and negative film masters can be processed, even simultaneously on a single receiving material, and it is not necessary for the emission spectrum of the light source to be variable.
摘要:
Described is a photosensitive material for producing metal-colored images, comprisingA) a flexible transparent plastic support film,B) a photosensitive layer comprising a polymeric binder, a photosensitive substance and a pearl luster pigment, and optionallyC) a thermoplastic adhesion-promoting layer.The material of the invention makes it possible to produce color-proofing images for metal-colored multicolor prints by combining metal-colored single-color images with single-color images in the usual primary colors as desired.
摘要:
A process for the production of a color image is described, in which a photosensitive material that has a temporary support film, a colored photosensitive layer and an adhesion-promoting layer that can be activated by heat is laminated at high temperature and under pressure with an image-receiving material which carries, on a support, a pigment layer containing a white pigment. The photosensitive layer is exposed imagewise and developed to produce an image, the temporary support film is peeled off from the image-receiving material before or after exposure to light and, if required, these steps are repeated with at least one further photosensitive material whose colored layer has another color to produce a multi-colored image. The process gives color images having a smaller dot enlargement compared with a halftone original and is particularly suitable for the color testing of copy for multicolor printing.
摘要:
The invention relates to a photosensitive material for the production of color proofing films for multicolor printing comprising:A) a transparent, flexible film support,B) a photopolymerizable layer containing:B1) a polymeric binder,B2) a free radical-polymerizable compound,B3) a compound which is capable of initiating the polymerization of (B2) on exposure to actinic light, andB4) a dye or colored pigment in a primary color of multicolor printing, andC) a thermoplastic adhesive layer on the photosensitive layer,which contains at least about 1.5% by weight of a water-soluble, colorless, low-molecular-weight salt whose aqueous solution is not highly acidic.The material is processed by lamination onto an image-receiving material, exposure and peeling apart of the film support and the image-receiving material, the unexposed areas of the layer and the adhesive layer remaining on the image-receiving material. The addition of the salt to the adhesive layer substantially reduces the adhesion between this layer and the exposed areas of the photopolymerizable layer.
摘要:
The invention relates to a usually positive-working radiation-sensitive mixture which contains as essential components a binder which is insoluble in water and soluble in aqueous-alkaline solutions, a 1,2-quinone diazide and a compound which diminishes the developer solubility of the exposed regions by heat treatment, in which the compound which diminishes the developer solubility which is present is at least one urethane of the formula I: ##STR1## in which R.sub.1 is hydrogen or methyl,R.sub.2 is hydrogen, alkyl, substituted or unsubstituted aryl, or substituted or unsubstituted arylaminocarbonyl,R.sub.3 is substituted or unsubstituted arylene or arylenealkylene,Q is hydrogen, --CH.sub.4-p, or --CR.sub.5 R.sub.6 in which R.sub.5 and R.sub.6 can be identical or different and are selected from the group consisting of hydrogen, alkyl and aryl, carbonyl, oxygen, sulfur or sulfonyl,m is 1, 2 or 3,n is at least 1 and not more than 50, andis 1, 2 or 3.The mixture is suitable for producing a radiation-sensitive recording material which has a long shelf life in combination with high radiation sensitivity and has a broad image reversal range in a process for producing relief images.
摘要:
A photopolymerizable mixture is disclosed which contains:a) a graft copolymer having a polyurethane as the graft backbone, onto chains containing vinyl alcohol units and vinyl acetal units are grafted,b) a free-radically polymerizable compound possessing at least one terminal ethylenically unsaturated group and having a boiling point of more than 100.degree. C. at normal pressure, andc) a compound or a combination of compounds which under the action of actinic light is capable of initiating the polymerization of compound b).The mixture is suitable for use in the production of printing plates and photoresists. It is distinguished by high photospeed and can be developed with aqueous solutions. It yields printing plates producing large print runs.
摘要:
A photopolymerizable mixture is described which comprises a polymeric binder, a compound which is polymerizable by free radicals and has at least one polymerizable group and a photoreducible dye and a dicyclopentadienyl bis(2,4,6-trifluorophenyl)-titanium or -zirconium as photoinitiator. The mixture is suitable for producing printing plates and photoresists and is distinguished by particularly high photosensitivity, in particular in the visible region of the spectrum, and by very good thermal stability. It can be imaged in particular with laser radiation in the visible region.