Any thoughts on my electrolysis idea? Use a solvent in which the ink is capable of dissolving, and applying a current through the solution would encourage further dissolution and attraction towards the anode/cathode and away from the paper
Good riddance, ETO.
Clear question and clear replies.Originally Posted by shermaine
What's your problem?
Proper Planning Prevents Piss Poor Performance
I got it, Time machine then slap yourself in the face before you hit print.
Didn't they used to have typewriters that were capable of lifting the letters if you made a mistake, before they fully dried? I thought they did.
Last edited by Njguy; 31st August 2009 at 02:09 AM.
You could try subtly swapping a document for a sheet of blank paper in an office? Just make sure it's not the piece of paper you used to print your ransom demands onto.
Good riddance, ETO
Invisible ink printed on transparency paper? Who's going to know if you actually erased it or not?
"When in doubt, LIGHT IT ON FIRE AND SEE WHAT COLOR OF SMOKE IT CAN MAKE!" -- tcmtech
This is kind of like the white out all over the screen.
But any way maybe refill you black ink with white out and reprint it
Burt
Flood the entire page with the same ink used in the printer. It's erased... but to black.
anyone know how thermal printer works?in term of mechanism
Was Google not informative enough?
http://lmgtfy.com/?q=how+a+thermal+printer+works
Last edited by blueroomelectronics; 3rd September 2009 at 04:05 PM.
Are you asking about the mechanical or chemical mechanism? If chemical, which type, the heat sensitive paper or the ribbon type? Or, are you asking about the electronic circuit?
John
i would like to know what is ink make up of and also the mechanism inside a printer.
A thermo printer doesn't use ink. It uses hot needles (pins) instead.
The hot needle punches heat sensitive paper which turns black at the impact point.
Thermo print paper has short life only and is not allowed to print documents. After five to ten years of storage (even in dark and dry rooms) the printed text or image deminishes completely.
The first generations of telefax machines used thermo prints and I sometimes had problems reading customer's information after 1/2 year.
The mechanical construction is very similar to a pin printer (which uses needles to punch a carbon tape - the first generation had cotton or nylon tapes like typewriters).
Boncuk
Proper Planning Prevents Piss Poor Performance
The simplest ink is made of a phenothiazine dye, like methylene blue. The dye is reduced to a colorless compound (e.g., leucomethylene blue), which is then converted to a heat-labile amide or carbamate) at the thiazine nitrogen. The amides/carbamates are almost colorless and are incorporated into the paper.
When spots on the paper are heated as mentioned by Boncuk, the amide/carbamate decomposes, leaving the parent reduced phenothiazine intact, which very rapidly oxidizes in air to produce color. By changing the side groups attached to the phenothiazine, the color can be controlled to an extent. However, the dark blue of almost black ink is most common.
The other thermal printer mechanism uses a ribbon that has a colored wax on it. That type of thermal printer uses heat to transfer the wax to the paper, somewhat like using carbon paper. Some inexpensive, plain-paper fax machines use that method, rather than laser printers.
John
any one knows about the dye and the erasing from toshiba and how they work?
Which Toshiba are you concerned about and why?
John
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