Do all scanners have haze under the glass

Discussion in 'Scanners' started by Discordia, Nov 15, 2003.

  1. Discordia

    Discordia Guest

    I've owned three scanners and every one has had a haze under the
    glass. I take it this is normal, since every one I've had smokely
    glass. What is it? Does it degrade the photoimage?
     
    Discordia, Nov 15, 2003
    #1
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  2. Discordia

    Discordia Guest


    Its a new scanner, just got it yesterday.
     
    Discordia, Nov 15, 2003
    #2
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  3. The other possibility is plastic sublimation - some of the compounds in
    plastic sublimate (go from solid to gas) and haze up everything (you'll
    notice it most on the inside of windows in a new car - it's just the "new
    car smell" stuck to the glass)

    Mark
     
    Mark Durrenberger, Nov 15, 2003
    #3
  4. Discordia

    Discordia Guest

    On Sat, 15 Nov 2003 15:57:21 -0500, "Mark Durrenberger"

    I should "clarify" here. I see this haze only when the scanner light
    is going, and only if I look through it at an angle. Otherwise, it
    looks really clear. I guess I'm nit-picking about it did make me
    wonder if it would seriously effect the images.
     
    Discordia, Nov 16, 2003
    #4
  5. It seems to be normal with Canon scanners and it does degrade image quality.
     
    I used to be sober but now I am, Nov 17, 2003
    #5
  6. Discordia

    Salvatore Guest

    My take on this phenomenon is that it is part of the adhesive formula for
    the peelable protective layer that keeps the surfaces scratch free during
    production. I assume this since I have no idea as to the production
    techniques involved.

    It often appears like a faint oily slick or haze. I have never seen a
    scanner without it.

    I could not notice any degradation in the scan as a result, but could not
    rest until it was cleaned.

    My 2 cents

    Salvatore
     
    Salvatore, Nov 17, 2003
    #6
  7. what are you doing looking at the scanner light at an angle for,
    that's what I wanna know :)

    no seriously, I'm not sure what you mean about the haze. I tried
    scanning with the cover opened looking sideways at it and noticed
    nothing that can be described as haze, so I dunno.
     
    ThermosBoy (TM), Nov 24, 2003
    #7
  8. I have a Canon LIDE 50 and noticed no 'haze'. Has anybody taken a pic
    of this haze so I know what to look for?
     
    ThermosBoy (TM), Nov 24, 2003
    #8
  9. Discordia

    winlou Guest

    I have a HP 3400 and it has a haze under the glass too,how do you get the
    top off to clean under the glass on the HP 3400
     
    winlou, Nov 26, 2003
    #9
  10. I don't have an HP 3400 and the HP site doesn't have any instructions
    for removing the top, but the scanners that I have been advised about
    use the following method. This may not apply to your particular scanner.
    Take the lid off the scanner (usually just open it and lift it straight
    off). Caution: Check for any wires that may be connected to the lid for
    lid mounted buttons, LED lights, etc. Undo them.
    Look for screws near the hinges (mostly on the top side of the case) and
    near the front. Most times, there are just two near the hinges. They may
    be covered by small round plastic caps that are pried off to get to the
    screws.
    Use the proper driver to get the screws out (torx, phillips, etc)
    Lift the back of the scanner top slightly up and move it towards the
    front to unhook the front holding tabs (if there are no screws near the
    front)..
    Caution: Look through the glass and inside the scanner case near the
    front to see if any scanner button or other wires have to be undone.

    Check this site for photos on removing the top from an HP 5p for
    cleaning, and viewer submitted text for other brands and models.
    http://www.frontiernet.net/~willshak/scanner.html
     
    Bill Schnakenberg, Nov 26, 2003
    #10
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