公开(公告)号：GB1040861A

公开(公告)日：1966-09-01

申请号：GB675165

申请日：1965-02-17

Applicant: IBM

Inventor： DAVIES MICHAEL BASIL

IPC: G03D5/04

Abstract: 1,040,861. Photographic processing machines. INTERNATIONAL BUSINESS MACHINES CORPORATION. Feb. 17, 1965, No. 6751/65. Heading G2A. A photographic plate or print 6 is suctionally held on the lower surface of a lid 3 of a processing machine, the lid being hinged to a tank 2, and a carriage 7, carrying three tubes 8, 9, 10 which extend the width of the lid, moves backwards and forwards along the length of the tank, different processing liquids in turn being sprayed on to the emulsion surface of the plate by nozzles in the tube 8. The tubes 9, 10 are supplied with compressed air, and are provided with slots so as to provide air curtains in front of and behind the spray tube which curtains limit the spray and partly dry the plate. A system of pumps, multi-way valves and pipes supplies water, a developer, water, a fixer and water in turn to the tube 8, the developer and fixer being returned to the tanks 16, 17 respectively, and the water being sent to a waste outlet by means of the electrically controlled three way valves 14,18. Initiation of each processing step is controlled by a switching device operated when the carriage 7 reaches either end of the tank so that for each step the complete emulsion surface is scanned by the spray tube an integral number of times.

公开(公告)号：FR1465817A

公开(公告)日：1967-01-13

申请号：FR44841

申请日：1966-01-05

Applicant: IBM

Inventor： DAVIES MICHAEL BASIL

IPC: G03D5/04

公开(公告)号：GB1055073A

公开(公告)日：1967-01-11

申请号：GB2479964

申请日：1964-06-15

Applicant: IBM

Inventor： HUSSEY HUGH HARRY DONALD ,  DAVIES MICHAEL BASIL ,  LENOBLE JEAN PAUL ,  RUSSELL ALAN DAVID

IPC: C23C18/16 ,  G03C5/40 ,  H05K3/10

Abstract: An electrically conductive surface is formed on a base of e.g ceramic, mica, wood, paper, glass or plastics, by partly exposing and developing a silver halide emulsion, removing the exposed part with a bleach-etch solution and then fully exposing and developing the remaining unexposed part. In an example for forming a printed circuit, a film is partly exposed through a negative mask, developed, rinsed, immersed in a bleach-etch solution comprising cupric sulphate, citric acid, potassium bromide, and hydrogen peroxide, reexposed, developed, rinsed, immersed in a similar bleach-etch solution, rinsed, fully exposed, developed, rinsed, and the printed wiring so formed is polished. The wiring may be built up by electroless deposition of copper using an alkaline solution of copper sulphate with formaldehyde. The conductive layer may be baked to remove residues of gelatine, and lacquered to make the surface non-hygroscopic.