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New laser toner disappears when heated

edited December 2003 in Science & Tech
Toshiba has reportedly come up with a special blue toner for laser printers that allows companies to reuse the paper the ink is printed on. The ink in question contains no carbon, and loses its pigment (i.e you can't see it) when exposed to high levels of heat. If only James Bond spent more time in the office.

[blockquote]Paper printed with the special ink is treated in an erasing machine, which looks like a large steel briefcase. The erasing machine can hold 400-500 A4-sized pages or 200-250 A3-sized pages. The process takes three hours. The blue colour of the ink will help distinguish it from its black, permanent counterpart.[/blockquote]
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[blockquote]The "e-blue" product line also includes a ball point pen and marker which use the same ink as the toner cartridges. This allows consumers to write on paper printed with e-blue ink and still be able to decolour the ink in an erasing machine. Toshiba hopes to expand the e-blue line to copiers and large-scale, industrial-use printing in the future. The e-blue products go on sale in Japan on December 8th.
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[link=http://www.reuters.com/newsArticle.jhtml?type=topNews&storyID=3921519]Read More[/link]
[link=http://www.toshiba.co.jp/about/press/2003_12/pr0201.htm]Toshibas Website[/link]

Comments

  • GHoosdumGHoosdum Icrontian
    edited December 2003
    Uh... the printing on all my Best Buy receipts disappears when it's heated...

    For some reason, this sounds like a really bad idea to me...
  • ThraxThrax 🐌 Austin, TX Icrontian
    edited December 2003
    Enron would love it.
  • GHoosdumGHoosdum Icrontian
    edited December 2003
    ;D
  • TheLostSwedeTheLostSwede Trondheim, Norway Icrontian
    edited December 2003
    I dont get it...since when did lasers start to use INK?

    Looks like a bad idea to me.
  • ThraxThrax 🐌 Austin, TX Icrontian
    edited December 2003
    Laser printers have always used ink.
  • drasnordrasnor Starship Operator Hawthorne, CA Icrontian
    edited December 2003
    Thrax had this to say
    Enron would love it.

    Don't they have incinerators, shredders, and confetti machines for that sort of thing?

    -drasnor :fold:
  • ThraxThrax 🐌 Austin, TX Icrontian
    edited December 2003
    Sure, but now they would be able to save pennies by recycling paper, save money by not powering AC motors for shredders, save gas and money by not using incinerators, and they could still make confetti!
  • Straight_ManStraight_Man Geeky, in my own way Naples, FL Icrontian
    edited December 2003
    Um, toner, powder, then developer to add to then be heat-cured on. Just like a copier, and my Samsung and most HPs still do.

    The fuser heats very high heat, about 2-3X times what my CPU runs at, 800-1000 F for fuser wire or inner core of a fuser roller-- paper passes by rapidly enough it cannot flash burn.

    They must be using low heat fusing, premixed toner and developer. Hope their mix never precipitates. Most lasers are not LED fused.

    John.
  • RWBRWB Icrontian
    edited December 2003
    After a peice of paper has been handled a bit, I don't think you would want to put it back in a printer, it's likely to get jammed.

    Enron... nice ;)
  • TheLostSwedeTheLostSwede Trondheim, Norway Icrontian
    edited December 2003
    Thrax had this to say
    Laser printers have always used ink.

    That's a joke, right?

    Or is Ink the same as Toner over there? There is a huge difference between the two.
  • EnverexEnverex Worcester, UK Icrontian
    edited December 2003
    Toners much like dry board marker ink, it just wipes off if not hot or wet.... makes life easy to clean up if you get toner on anything for any reason, it just brushes off....

    RWB: I've never had a problem putting ****ty wrecked paper through my printer, so if they make them more rugged then they probably wont have a problem.

    NS
  • GHoosdumGHoosdum Icrontian
    edited December 2003
    NightShade737 had this to say
    Toners much like dry board marker ink, it just wipes off if not hot or wet.... makes life easy to clean up if you get toner on anything for any reason, it just brushes off....

    This doesn't apply to YOUR SHIRT, of course! :banghead:
  • EnverexEnverex Worcester, UK Icrontian
    edited December 2003
    Brushes off my shirt. It's probably because your shirt is not THX certified :p ...

    Just wash it out in cold water, should come off quite easy...

    NS
  • mmonninmmonnin Centreville, VA
    edited December 2003
    ?? Ink is melted onto the paper when its printed. The rollers are heated up. Thats why it takes Lasers awhile to print the first paper. This mus be even higher temps then cause if not it would disappear before it came out of the laser.
  • EnverexEnverex Worcester, UK Icrontian
    edited December 2003
    The paper is flash heated to 200'c when it goes through a normal laser printer, so yeah... I dont see how paper is going to hold up so well to being heated higher....

    NS
  • TheLostSwedeTheLostSwede Trondheim, Norway Icrontian
    edited December 2003
    An office/home laser printers fuser is about 150c-165c when it is at max. The paper gets about half as hot. The warmer the paper gets, the more curls you have on it.

    No ink is used on any laser printer, just toner. Ink doesn't need to be melted, it's already fluid. 2 totally dofferent technologys. The only ink that needs to be melted on a printer is on Xerox Solid Ink (thermal wax) technology (former Tektronix) but no laser or fuser are used.

    Dye-sub printers are capable of producing continuous tone photographs and can easily surpass the color capabilities of the press. The process involves converting the "ink" into a gas which can be mixed with other colors extremely efficiently. Dye-sub devices can reproduce halftone patterns, making them excellent proofing devices.
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