italian technology for hybrids (pcbs)

high technology based on laser equipment for hybrid printed circuits production is described. market outlets are analysed, underlining aurel products and the precision obtained from electronic controls. the ability of high speed operation combined with precision control is underlined. new materials (liquid crystals, noble metals, aluminiu..

alternative technology (personal page printers)

personal page printers have turned to technologies other than lasers to achieve the same effects. the author looks at two examples, the qume crystalprint series ii and the seikosha op-105a, that are similar in price but little else. the former is a compact hp laserjet ii-compatible lcd-shutter printer rated at 6 ppm. it's a very neat prin..

superconducting polycrystalline yba/sub 2/cu/sub 3/o/sub 9- delta / films

one possible approach to making films is to prepare polycrystalline layers by thick-film technology. the authors report the synthesis of superconducting oxide films with the composition yba/sub 2/cu/sub 3/o/sub 9- delta /. a mixture of yttrium, barium, and copper compounds in the proportions corresponding to the requisite cation ratios wa..

temporary solder masks' assuring successful pcb protection

temporary solder masking, or solder stopping prior to printed circuit board (pcb) soldering, has come a long way from the days of tape and toothpicks. masking agents are now available in the variety of viscosities necessary for manual, robotic, and silkscreening processes, and in solvent soluble, water soluble, and peelable forms to elimi..

un-plot-it, automated digitizing system, version 3.0

silk scientific has introduced a product which will allow the average scientist or engineer who has a hewlett packard or compatible plotter and an ibm or compatible personal computer to automatically digitize instrument output or pictures, etc. at a relatively inexpensive price. un-plot-it runs on the ibm pc, xt, at, and ps/2 or 100 perce..

multimedia scouting

experiments aimed at developing new media types through the serious consideration of existing media are described. six areas (print, audiovisual, speech, computer-generated activities, materials, and expression of ideas) are examined, and it is shown how the multimedia approach can be used to extend them into new genres of information dis..

flexible dosing in smt

the demand for the best and most economical method for applying flux and glue in surface mounting techniques depends on the market and product. as product ranges increase, life cycles are reduced but layout changes during manufacture make this more difficult. these trends require flexible automatic manufacturing but flux and glue are need..

a machine vision based interactive control system applied to circuit printing on a mylar substrate

inspection of printed circuits on mylar substrates poses special problems, both manually and automatically. manual processes are not practical on a continuous basis, and computer vision techniques require the system to locate features under conditions of low contrast both for detection of the mylar, and for the circuits themselves. the sy..

easy-pc pcb cad

the easy-pc pcb cad program package system really is easy to learn and use. easy-pc is the brain-child of number one systems ltd and is written for use on an ibm pc, xt, at, pc386 or equivalent computer, including the amstrad 1512 or 1640, and having a cga, ega or vga monitor screen. a minimum of 512 k of ram is required. it has been desi..

computer-aided design of tiles and facings

reviews the role of cad in the design of tiles and ceramic facings as (a) a designer's tool: (b) a way of generating negatives for lithography or silk screen printing: and (c) as part of publicity and marketing. the article concludes with some advice on the selection of equipment