EVprofessor, I love your story about impact printers and carbon paper coming back into use because of the security benefits. And yes, I remember those etch processes, as I used to write about them. Same goes for some of the earliest RFID technologies.
Rob, Ann, and others, Concerning the printing of PC boards, In the old days (Oh yes I remember them well.) we used copper plated fiberglass media for PC boards. Then used a subtractive process to "Etch" out the unwanted copper by applying "Resist" then acid etched the unsanted areas. Why nit print on an ink jet printer the resist and transfer it to the board stock or even better print out the etched zones with acid inks and transfer it directly to the board so that part of the copper is etshed away by the acid. but seriously a plotter with acid ink can do a good job of etching or use a milling cutter with its own motor moved around by the plotter to cut the copper or why not etch the copper with a laser? it can cut metals... I suspect a plotter/pc-board mill could be sold eagerly for a couple hundred at a profit.
Good points, EVprofessor. Business and manufacturing of all stripes have moved to new technology, in great part to achieve improved efficiencies. The investment in technology in recent decades has more than paid for itself. It's a shame to see the government miss these efficiencies.
Yes, Rob, but whoever is printing the forms and supplying the printers (And RIBBONS) sells that as added security. Hey the NASA "Space Shuttle" program was still using the 1980s 80286 microprocessor systems when the last one was retired! Our Government seems to have a LOT of inertia...
How many years will pass before our vehicle license plates (Tags) will be 3-D printed and include an RFID readable from a following police patroller? and our "Driver's License / State ID" could be 3-D with a 3-D color rendition of our face included with a similar RFID (or your Bank's Debit card) to make them more secure? Even Orwell's 1984 didn't concede such an intrusive technology.
Ann, the original purpose for RFID tags was theft reduction at retailers by triggering an alarm. The paper based tags were too easy to dissable by tearing the tag. A tough plastic tag wes preferable to most store security experts. the paper units were used at libraries where the accidental carrying off an unchecked out book thru the exit triggered an alarm. To disable the alarm a laminated "Date-Due" card with metal foil in the center was inserted whenever the book was "signed-out" and because the RFID was a part of the "Pocket" for that "Date-Due" tag the imbeded foil damped the retransmission of RF and NO Memory was used or needed just a return RF signal triggered the klaxon. 8^)
Rob, the comment about the government using impact printers is no joke, I noticed last month when purchassing a renewal for my vehicle registration that the form was a "Multipart carbom paper" and the printer was a "Daisey-Wheel" from 1970s technology. This is in Florida, I asked and was told that that way no available technology could reproduce the resultant certification, reducing the likleyhood of the forms being used to obtain title for a stolen car... Swell concept but obvously inefective.
Yes, They still make Ink Jet printers and they work "Swell" also they are much less expensive than the Xerox process for black and especially for color printing. Now only the government agencies use impact printers with daisey wheels and print bands, but they want to continue using the carbon paper and NCR forms approved by the state printing office.
Thanks, Ann. The source is right -- it definitely didn't catch on with retailers. Maybe it did have to do with storage capacity. I also wonder if the technology just arrived too early, really, before much of the world was ready for RFID.
Researchers have been working on a number of alternative chemistries to lithium-ion for next-gen batteries, silicon-air among them. However, while the technology has been viewed as promising and cost-effective, to date researchers haven’t managed to develop a battery of this chemistry with a viable running time -- until now.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies.
You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived.
So if you can't attend live, attend at your convenience.