摘要:
photosensitive composition for use in forming color picture tubes contains an aromatic diazonium compound of the general formula: where R 1 and R 2 are straight chain alkyl radicals, R 3 and R 4 are each one of H, CH 3 or OCH 3 except that R 3 and R 4 cannot both be H, and A is CL½ZnCl 2 , BF 4 or HSO 4 . The sensitivity of the composition is approximately 10 - 20% higher than that of conventional compositions.
摘要:
A photosensitive composition comprising (1) at least one diazonium compound selected from among salts and double salts of diazonium ions represented by the general formulas: wherein A stands for a substituent selected from among and wherein R, and R 2 each stand for an alkyl or benzyl group with the proviso that the total number of carbon atoms of R, and R 2 is 8 to 16, and (2) at least one nitrate selected from the group consisting of calcium nitrate and magnesium nitrate and a pattern forming process using such a composition. This composition gets sticky upon exposure to light.
摘要:
A process for forming a fluorescent screen, where polychroic patterns are successively formed from at least two kinds of phosphors having different color emission or black powder on a photosensitive substance capable of becoming tacky by light irradiation, which comprising bringing a particulate filling material finer than particles of the phosphors in contact with tackified parts when or after the particles of phosphors are applied to the tackified parts in the individual steps of forming patters of the individual phosphors. The filling material saturates the tackiness of the phosphor pattern in question before a further phosphor pattern is subsequently formed and contamination of the pattern of the preceding step with the phosphor of the successive step can be eliminated thereby.
摘要:
The sensitivity of a photosensitive composition based on an aromatic diazonium salt which gets sticky upon exposure to light, is improved by adding a salt of a compound of the general formula: wherein R 1 and R 2 each represents a straight chain alkyl group, and X, Y and Z each represents H, a straight chain alkyl group or an alkoxy group, but two or more of X, Y and Z cannot be H at the same time. Such compositions are used to form a pattern of powder coat layer on a substrate, e.g. a colour television picture tube.
摘要:
Herein is disclosed a resist which comprises a water repellent compound having a functional group of which water repellent ability disappears through a nucleophilic substitution reaction with alkali or at least two functional groups, in one molecule, of which water repellent ability disappears through a reaction with alkali, and a permeability-variable composition of which alkaline solution-permeability is changed by radiation exposure or radiation exposure and baking after radiation exposure, said resist being excellent in sensitivity to UV light, electron beam, X-ray and other radiations, high in resolution capability and developable with aqueous alkaline solution; as well as a pattern forming method using said resist.