摘要:
A lithographic printing plate precursor for use on a printing press, with minimal or no additional processing after exposure to actinic radiation, comprises a printing plate substrate, a polymeric resist layer capable of imagewise photodegradation or photohardening, and a plurality of microencapsulated developers capable of blanket-wise promoting the washing out of either exposed or unexposed areas of the polymeric resist. The microencapsulated developers may be integrated into the polymeric resist layer, or may form a separate layer deposited atop the polymeric resist layer, or may be coated onto a separate sheet support capable of being brought into face-to-face contact with conventional printing plates.
摘要:
The present invention provides a lithographic printing plate comprising a substrate and a photocurable polymeric photoresist, such as those based on free-radical initiated photocuring mechanisms. To constrain detrimental and undesired activity of excess free radicals, an embodiment of the printing plate is further provided with a free-radical regulating system. In a particular embodiment, the free-radical regulating system is provided as an overcoat, the overcoat being a light-transmissive overcoat and comprising a polymer having a pendant free-radical trapping group. A particular polymer for the overcoat has the formula ##STR1## wherein, m is from approximately 20% by weight to approximately 95% by weight, and n is from approximately 0% by weight to approximately 75% by weight. Capable of deactivating free-radicals actinically generated in the photoresist subsequent to exposure, the polymer is soluble in fountain or ink solution and incompatible with the photoresist.
摘要:
A photoreactive binder that may be used to enhance photospeed in either conventional plates or on-press developable lithographic printing plates. Briefly, a polymer of m-isopropenyl-.alpha.,.alpha.-dimethylbenzyl isocyanate is derivatized for vinyl group reactivity by reacting the isocyanate groups thereof with hydroxyalkyl acrylate. The resulting photopolymeric binder provides significantly higher photospeed than the non-reactive binder currently utilized in the production of conventional printing plates. The resulting lithographic printing plate also shows better durability (as manifested by longer run-length) and is more easily developed by the microencapsulated developers utilized in the present invention. As to the preparation of the photoreactive binders, the application discloses a method of copolymerizing m-isopropenyl-.alpha.,.alpha.-dimethylbenzyl isocyanate (m-TMI) through complexation with an electron-deficient monomer such as maleic anhydride to accelerate free radical copolymerization with other monomers, and thus, provides greater monomer-to-polymer conversion. Use of the resulting product in the photoresist of a lithographic printing plate improves its adhesion to an underlying substrate.
摘要:
A developer sheet comprising a support having a layer of a color developer on the surface thereof, said color developer being capable of reacting with a substantially colorless electron donating color former to produce a color image and being an acrylic or methacrylic polymer having pendant developer moieties (e.g., hydroxy aromatic or aromatic acid moieties such as salicylic or phthalic acid moieties) which are preferably metallated (e.g., zincated) or being the polymeric reaction product of vinyl salicylic acid or salt.
摘要:
An embodiment of the invention provides a focus adjustable apparatus adapted to be disposed on a transparent substrate to modulate a plurality of rays passing through the transparent substrate. The focus adjustable apparatus includes a light modulation device, an eye tracking device, an eyesight status device and a controller. The light modulation device receives the rays from the transparent substrate and adjusts an emergent angle of each ray. The eye tracking device tracks a position of a user and estimates a distance between the user and the focus adjustable apparatus. The eyesight status device obtains an eyesight data of the user. The controller provides a control signal to drive the light modulation device by estimating the emergent angle of the each ray according to the distance between the user and the focus adjustable apparatus and the eyesight data of the user.
摘要:
A continuous process for manufacturing a porous material is provided. The process includes the steps of mixing a non-ionic surfactant with a precursor of a carbonaceous material to form a mixture comprising a continuous phase and a liquid crystalline mesophase comprising the non-ionic surfactant, wherein the precursor is essentially located in the continuous phase, coating or depositing the mixture onto a non-woven substrate, drying or heating the mixture, and converting the precursor to form a polymer.
摘要:
Structures and manufacturing processes of an ACF array using a non-random array of microcavities of predetermined configuration, shape and dimension. The manufacturing process includes fluidic filling of conductive particles onto a substrate or carrier web comprising a predetermined array of microcavities, or selective metallization of the array followed by filling the array with a filler material and a second selective metallization on the filled microcavity array. The thus prepared filled conductive microcavity array is then over-coated or laminated with an adhesive film. Cavities in the array, and particles filling the cavities, can have a unimodal, bimodal, or multimodal distribution.
摘要:
An anisotropic conductive film (ACF) comprising: (a) an adhesive layer having a substantially uniform thickness; and (b) a plurality of conductive particles individually adhered to the adhesive layer, wherein the conductive particles include a first non-random array of particle sites partially embedded at a first depth within the adhesive layer and a second fixed non-random array or dispersion of conductive particles partially embedded at a second depth or a dispersion of conductive particles fully embedded within the adhesive layer, wherein the first depth and the second depth are distinctly different. The ACF may be supplied as a sheet, a continuous film or as a roll and the multi-tier morphology may be present throughout the length of the product or in select areas.
摘要:
A method for manufacturing a switchable PBD includes filling a plurality of first-type particles and a plurality of second-type particles into each cell, where the plurality of first-type particles carries charges of a first charge polarity having a first charge density and the plurality of second-type particles is substantially electrically neutral, or carries charges having a second charge density that is substantially lower than the first charge density of the first-type particles, and filling a fluid into each cell, where the fluid comprises a charge controlling agent having a second charge polarity opposite to the first charge polarity, and the charge controlling agent has a substantially selective wettability, absorbability or adsorbability on the plurality of second-type particles. As such, at least part of the plurality of second-type particles is charged to have the second charge polarity in each cell.
摘要:
The invention is directed to novel methods and compositions useful for improving the performance of electrophoretic displays. The methods comprise adding a high absorbance dye or pigment, or conductive particles, or a conductive filler in the form of nanoparticles and having a volume resistivity of less than about 104 ohm cm, or a charge transport material into an electrode protecting layer of the display.