SU1619337A1

SU1619337A1 - Coating installation

Info

Publication number: SU1619337A1
Application number: SU884394631A
Authority: SU
Inventors: Александр Владиславович Масков; Надежда Викторовна Данилова
Original assignee: Предприятие П/Я В-2230
Priority date: 1988-02-29
Filing date: 1988-02-29
Publication date: 1991-01-07

Abstract

Изобретение относитс к вычислительной технике, а именно к производству носителей пам ти на магнитных дисках. Целью изобретени вл етс повышение качества покрыти путем устранени преждевременного высыхани покрыти при центрифугировании. Установка позвол ет уменьшить скорость испарени растворител при обдуве кольцевой подложки воздухом, проход щим через кольцевой короб. Подсос воздуха осуществл етс через отверсти 14 в стенке наружной полости Ю короба, где он насыщаетс парами растворител , затем проходит через внутреннюю полость 11 и далее через отверсти 16 подаетс в зазор между внутренней поверхностью 7 диска и кольиевой подложкой 4. Концентраци парив летучего растворител в этом воздухе не меньше концентрации паров растворител над кольцевой подложкой 4 при центрифугировании, поэтому поток воздуха не способствует преждевременному высыханию покрыти . 2 ил. с 9 (/The invention relates to computing technology, in particular to the manufacture of storage media on magnetic disks. The aim of the invention is to improve the quality of the coating by eliminating the premature drying of the coating during centrifugation. The installation reduces the rate of solvent evaporation when the annular substrate is blown with air passing through the annular duct. The air is sucked through the holes 14 in the wall of the outer box, where it is saturated with solvent vapors, then passes through the internal cavity 11 and further through the holes 16 is fed into the gap between the inner surface 7 of the disk and the colony substrate 4. The concentration of the volatile solvent in this air is not less than the concentration of solvent vapors over the annular substrate 4 during centrifugation; therefore, the air flow does not contribute to the premature drying of the coating. 2 Il. from 9 (/

Description

Фиг.11

Claims

Claim

Installation for coating, comprising a housing, an annular substrate holder, a drive for rotating the holder, an irrigation device connected to the housing, a continuous air protection disk having a surface internal and external to the ring substrate, characterized in that, in order to improve the quality of the coating by eliminating its premature drying during centrifugation, an annular duct is placed on the outer surface of the air protection disk, radially divided into interconnected an external cavity, partially filled in height with a porous substance saturated with a volatile solvent, and an internal cavity, in which case through holes are made in the outer annular wall of the duct. openings displaced in height relative to the porous substance, and through holes matching each other and located on a diameter equal to the inner diameter of the annular substrate are made in the air protection disk and the wall of the inner cavity of the duct adjacent to the outer surface of the air protection disk.