摘要:
The present invention provides an optical recording medium, which contains a substrate; and a recording layer disposed on the substrate, wherein the recording layer is subjected to recording of information using holography, wherein the recording layer contains a gas generating substance encapsulated in minute receptacles, and wherein the gas generating substance generates gas upon radiation of light. The present invention also provides an optical recording method, and an optical information reproducing method using such the optical recording medium.
摘要:
Lithographic printing plates are imaged using an inkjet printer to imagewise apply a chemical or masking agent onto the plate surface. In some embodiments, the chemical causes an affinity change, thereby facilitating lithographic printing.
摘要:
The invention relates to a recording material having a dimensionally stable, two-dimensional support, preferably an aluminium support, and a negative-working, radiation-sensitive layer which comprises a diazonium salt, a polymeric binder and a sulphobetaine. In addition, the layer may also comprise a polymerizable monomer or oligomer and a photopolymerization initiator. The front of the recording material may be matted or pigmented, and the back may be coated with an organic polymeric material. The sulphobetaine improves the solubility of the diazonium salts in aqueous-alkaline developers without reducing the resistance of the offset printing plates produced from the recording material.
摘要:
A photosensitive composition including a water-soluble aromatic diazo compound having at least two diazo groups and lactic acid, hydroxyacetic acid or, a mixture thereof in an amount of at least one third by weight of the diazo compound. The photosensitive composition is in the form of a liquid or paste, is thus easy to handle, is suitable for use in the production of photosensitive printing plates, and has good storage stability.
摘要:
A photographic element formed from a substrate and light sensitive coating on the substrate wherein the coating comprises a mixture of a diazo compound and an aromatic carboxylic coupling agent having phenolic hydroxy groups, in an acidic medium.
摘要:
This invention relates to light sensitive diazonium compound condensation products stabilized against degradation caused by heat and/or prolonged storage employing, as stabilizers, an acid selected from the group consisting of benzoic acid, m-nitro benzoic acid, p(p-anilino phenylazo) benzene sulfonic acid, 4,4'-dinitro-2,2'-stilbene disulfonic acid, itaconic acid, and mixtures thereof. The invention also relates to presensitized reproduction materials comprising the acid stabilized diazonium compound condensation products.
摘要:
Plates such as those used in lithographic printing and photoresists such as those used in preparing printed circuit boards and the like are provided with a photopolymerizable photosensitive diazo resin that is unusually stable. The diazo resin is laid down from a stabilized diazonium composition that is an emulsion including the selected diazo resin, a purine derivative, especially a theophylline derivative, preferably in combination with a salt of a low molecular weight alkyl sulfonic acid or other supplementary stabilizer component.
摘要:
An inorganic system of color photography in which colored images are recorded with compositions comprising a mixture of an iridescent pigment of the type displaying an interference-reinforced reflection color, and finely divided particles of a photosensitive material, such as a silver halide, which can be developed to give black or other light absorbing particles which will absorb light wavelengths complementary to the interference-reinforced reflection color of the iridescent pigment. The system does not require organic dyes in the final image, which is highly light-stable, and uses much smaller amounts of silver than conventional black and white photography.
摘要:
A dithiocarbamate is mixed with a photolytic aromatic diazo compound to improve the intrinsic sensitivity and spectral sensitivity of the photosensitive material for diazo photography.
摘要:
Lithographic printing plates are imaged using an inkjet printer to imagewise apply a chemical or masking agent onto the plate surface. In some embodiments, the chemical inhibits a photoreaction in the top layer.