Cleaning Scanner Glass (Inside) hp3970

All I find on the absolutely worthless hp site is instructions to disconnect power before wiping the outer surface of the glass ;-)

...Jim Thompson

--
|  James E.Thompson, P.E.                           |    mens     | 
|  Analog Innovations, Inc.                         |     et      | 
|  Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    | 
|  Phoenix, Arizona            Voice:(480)460-2350  |             | 
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         America: Land of the Free, Because of the Brave

So they at least promise to supply the information, and a support request might be honored.

Here's info from a different HP scanner:

---------- If the 6200C is like the 6100C, which is mechanically similar to my 4C ...

1. Disconnect power. Take anti-static precautions.
2. Remove the auto-feed assembly. This should expose the rear Torx screwheads.
3. Remove the metal covers over the 2 front Torx screw heads.
4. Remove the screws and lift off the upper case w/glass.
5. Clean and replace.

Search the net for further platen glass cleaning advice.

--
Regards, Bob Niland private.php?do=newpm&u= 
----------- 


Best regards,  
Spehro Pefhany

If you get impatient and you're feeling destructive :) And... the scanner is slow and old and it's time to get a new one then do this risky thing:

1) Put duct tape on the glass 2) Turn it upside down and smash the glass with hammer 3) Replace glass with something cut by a glass shop 4) Silicone the new glass in place.. Note: You could also devise a means to make the glass easy to remove for future cleaning. (drop in frame..) The fog up might return. D from BC

Where DO you come up with these stupid ideas? Do you have any idea of what kind of glass is used in a scanner? Do you have any idea how its mounted? Or how critical the thickness is?

--
Service to my country? Been there, Done that, and I've got my DD214 to 
prove it. 
Member of DAV #85. 

Michael A. Terrell 
Central Florida

That has nothing to do with it, idiot. His stupidity lies in the duct tape suggestion.

Glass might look green on edge, but a piece that thin is NOT going to alter the color of a capture, so standard double strength glass would surely work just fine, idiot.

Wow, you don't care how many people see how truely stupid you are. I know a guy that tried 'standard double strength glass' instead of the optical grade glass. It caused so much distortion in the scanned images that it was useless, just like you.

--
Service to my country? Been there, Done that, and I've got my DD214 to 
prove it. 
Member of DAV #85. 

Michael A. Terrell 
Central Florida

Replacement glass for scanners, copiers, etc must be:

1) Optical grade float glass, or you'll get distortion of various sorts - window glass is unlikely to be flat & even enough. 2) The same thickness as the original, or the optics won't focus correctly, plus the retaining slot/clips probably won't hold it securely, or might bow it or crack it during installation. 3) The same (or similar) refractive index as the original, or you risk getting any - or all - of: poor contrast, lamp flare, or 'ghost' images, due to internal reflections in the glass.

And yes, Prongy / JackShephard is a useless idiot, but of course you already knew that. ;^)

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