GB863391A - Improvements in or relating to representations of printed electric circuits - Google Patents
Improvements in or relating to representations of printed electric circuitsInfo
- Publication number
- GB863391A GB863391A GB2920058A GB2920058A GB863391A GB 863391 A GB863391 A GB 863391A GB 2920058 A GB2920058 A GB 2920058A GB 2920058 A GB2920058 A GB 2920058A GB 863391 A GB863391 A GB 863391A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuits
- representation
- register
- printing
- intermediate films
- 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
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
-
- 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
- H05K2203/15—Position of the PCB during processing
- H05K2203/1572—Processing both sides of a PCB by the same process; Providing a similar arrangement of components on both sides; Making interlayer connections from two sides
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Printing Methods (AREA)
Abstract
863,391. Photographic images of printed circuits. GENERAL ELECTRIC CO. Ltd., and MILLS, D. Sept. 11, 1959 [Sept. 11, 1958], No. 29200/58. Class 98(2) A photographic representation comprises superimposed images of the conducting pattern for each side of a double-sided printed circuit in the register of such pattern, the images being such that they may be separately identified in a print made from the representation, which latter is of value in deciding upon the positions of components to be added to the circuits. The representation may be prepared from a layout diagram of the circuits made on the respective sides of translucent Bristol board four times as large in each dimension as the intended circuits and provided with register marks, the conducting patterns being indicated by areas of black tape; by photographing each side with use of a copy camera to make first and second intermediate films, contact printing third and fourth intermediate films therefrom, the latter through a piece of transparent material having diagonal cross hatching, printing through these latter intermediate films in register and printing through the result to obtain a final positive representation. Alternatively layout diagrams of the circuits may be made on tracing materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2920058A GB863391A (en) | 1958-09-11 | 1958-09-11 | Improvements in or relating to representations of printed electric circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2920058A GB863391A (en) | 1958-09-11 | 1958-09-11 | Improvements in or relating to representations of printed electric circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB863391A true GB863391A (en) | 1961-03-22 |
Family
ID=10287747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2920058A Expired GB863391A (en) | 1958-09-11 | 1958-09-11 | Improvements in or relating to representations of printed electric circuits |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB863391A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10724178B2 (en) * | 2013-07-22 | 2020-07-28 | Giorgio Trani | Apparatus and method for realizing a web of fibrous material |
-
1958
- 1958-09-11 GB GB2920058A patent/GB863391A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10724178B2 (en) * | 2013-07-22 | 2020-07-28 | Giorgio Trani | Apparatus and method for realizing a web of fibrous material |
| US11390994B2 (en) * | 2013-07-22 | 2022-07-19 | Giorgio Trani | Apparatus and method for realizing a web of fibrous material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5315140A (en) | Image forming particles | |
| SE7710947L (en) | COPYING MACHINE | |
| GB863391A (en) | Improvements in or relating to representations of printed electric circuits | |
| GB1186250A (en) | Apparatus for Photographic Printing and Product Produced Thereby. | |
| GB864430A (en) | Improvements in or relating to the manufacture of printed electric circuits | |
| GB938483A (en) | Improvements in or relating to display signs | |
| US3246598A (en) | Method of making a silk screen | |
| JPS52143774A (en) | Negative positioning mechanism in reduction projecting and printing apparatus | |
| JPS531020A (en) | Thermodevelopable photosensitive material | |
| GB1023143A (en) | Photographic production of printing matrices | |
| GB631118A (en) | Improvements relating to photogravure printing | |
| GB826461A (en) | Improvements in or relating to display signs | |
| JPS5814352Y2 (en) | Copy scale display device | |
| JPS5640242A (en) | Mask for semiconductor device | |
| JPS5294031A (en) | Printer control circuit | |
| GB921709A (en) | Photographic halftone negatives | |
| SU136803A1 (en) | A method of obtaining an image of a printed circuit layout | |
| ES222176U (en) | Composition toy (Machine-translation by Google Translate, not legally binding) | |
| ES205956U (en) | New type of film, especially for children cinemas. (Machine-translation by Google Translate, not legally binding) | |
| GB1232813A (en) | ||
| GB826422A (en) | Improvements in or relating to panoramic motion pictures | |
| GB893314A (en) | Production of colour prints | |
| GB1275454A (en) | Apparatus for meterless exposure value indication | |
| GB1204662A (en) | Improvements in and relating to an educational and advertising device | |
| GB327200A (en) | Improvements in/or relating to colour photography |