TECHNOLOGICAL BACKING FOR MANUFACTURE OF MULTILEVEL THICK-FILM PRINTED CIRCUIT BOARDS Russian patent published in 1994 - IPC

Abstract RU 2025058 C1

FIELD: electronics. SUBSTANCE: invention relates to method of gauze-graphical printing. Technological backing used for matching of masks of dielectric and conductive layers with working substrate of printed circuit board has stationary reference marks of two types on transparent base which enables productivity of process of manufacture of PCBs to be accelerated. Thickness of base of technological backing is bigger than that of working substrate by value of gap between mask and working substrate. EFFECT: enhanced productivity. 4 dwg

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RU 2 025 058 C1

Authors

Shishlova V.N.

Gratsinskij V.G.

Dates

1994-12-15—Published

1989-08-25—Filed