GB1185027A - Improvements in and relating to Printed Circuits - Google Patents

Improvements in and relating to Printed Circuits

Info

Publication number
GB1185027A
GB1185027A GB2639466A GB2639466A GB1185027A GB 1185027 A GB1185027 A GB 1185027A GB 2639466 A GB2639466 A GB 2639466A GB 2639466 A GB2639466 A GB 2639466A GB 1185027 A GB1185027 A GB 1185027A
Authority
GB
United Kingdom
Prior art keywords
mask
photo
pattern
metal foil
resist
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2639466A
Inventor
Frederick James Mason
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Belling and Lee Ltd
Original Assignee
Belling and Lee Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Belling and Lee Ltd filed Critical Belling and Lee Ltd
Priority to GB2639466A priority Critical patent/GB1185027A/en
Publication of GB1185027A publication Critical patent/GB1185027A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/0002—Apparatus or processes for manufacturing printed circuits for manufacturing artworks for printed circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/05—Patterning and lithography; Masks; Details of resist
    • H05K2203/0548—Masks
    • H05K2203/056—Using an artwork, i.e. a photomask for exposing photosensitive layers

Abstract

1,185,027. Printed circuits. BELLING & LEE Ltd. 14 June, 1967 [14 June, 1966], No. 26394/66. Heading H1R. A mask having transparent portions and opaque portions, for repeated use in the production of printed circuits by a photo-etching process, is prepared from a flexible transparent polyester substrate to one surface of which is applied a metal foil, e.g. copper, zinc, or tin. The foil is coated with a photo-sensitive resist and an image of a drawing of the circuit pattern is projected thereon or a photo transparency is placed against the resist. The resist coating is developed and the metal foil is etched to leave a negative pattern of metal remaining on the mask, which pattern will correspond to spaces on the eventual printed circuit board. In use the mask is placed in contact with a photo-sensitive resist coated laminate on which a printed circuit is to be formed. Alternatively, the metal foil of the mask may be machine engraved to produce the negative pattern thereon.
GB2639466A 1966-06-14 1966-06-14 Improvements in and relating to Printed Circuits Expired GB1185027A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2639466A GB1185027A (en) 1966-06-14 1966-06-14 Improvements in and relating to Printed Circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2639466A GB1185027A (en) 1966-06-14 1966-06-14 Improvements in and relating to Printed Circuits

Publications (1)

Publication Number Publication Date
GB1185027A true GB1185027A (en) 1970-03-18

Family

ID=10242958

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2639466A Expired GB1185027A (en) 1966-06-14 1966-06-14 Improvements in and relating to Printed Circuits

Country Status (1)

Country Link
GB (1) GB1185027A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees