[filmscanners] Re: HP PhotsSmart - questions

["lists" <lists@lazygranch.com>]

Windex contains amonia which can etch coatings. Never use it on optics.
Electronics grade alcohol is generally accepted as best for optics. I
use cottonballs rather than cloth.


Laurie Solomon wrote:

>I do not have answers to the question of cleaning the internal optics,
>mirror, or sensors; nor do I have an answer to why 150 dpi appears
>sharper than 300 dpi when scanning a 3 x 5 color print.  I take it that
>this is a flatbed scanner.
>
>I would suggest the obvious with respect to cleaning.  You should start
>by cleaning the glass bed with a soft lintless cloth and a little
>Windex, being careful not to let any of the liquid run off the glass and
>into the internal areas of the scanner.  As for the other parts, you
>need to be careful not to scratch or leave lint on the surfaces of the
>optics and mirror.  I suspect that one would also need to be careful
>about what solutions one uses to make sure that they do not leave their
>own film residue over the optics and mirror, don't contain anything that
>will deteriorate the internal parts, and do not damage the electronic
>components and elements.
>
>As for the question of " why 150 dpi appears sharper than 300 dpi when
>scanning a 3 x 5 color print," you did not tell us if the result you
>speak of was on the monitor or on a hard copy print ( and if the latter,
>what type of print laser, inkjet, etc.)  The answer to this could
>furnish some indications of the reasons for this.
>
>----Original Message----
>From: filmscanners_owner@halftone.co.uk
>[mailto:filmscanners_owner@halftone.co.uk] On Behalf Of
>rkoziol3@comcast.net
>Sent: Saturday, August 06, 2005 8:37 AM
>To: laurie@advancenet.net
>Subject: [filmscanners] HP PhotsSmart - questions
>
>
>
>>Hi,
>>
>>Been reading the posts here for quite some time.  Just got
>>into scanning.  In fact the recent thread on Cheap Film
>>Scanners woke me up :-)  I have one that's at the bottom of
>>that heap.  It's HP PhotoSmart vintage 1997.  SCSI interface,
>>which makes it S10 I guess.
>>
>>I'm using the current version of HP software from their Support site.
>>Did a calibrate with a white piece of paper (the card is
>>gone). The scanner was donated by a friend.
>>
>>Now the question.  I started with a simple color print (3x5)
>>scan and noticed that setting it to 150dpi gives a "sharper"
>>result than 300dpi.
>>
>>Can that be explained in any way?  Saved as bmp and jpg, same results.
>>
>>Secondly, should I take the scanner apart and attempt to
>>clean any optical components?  I'm quite handy with small
>>tools :-)  After sitting for so many years and some usage by
>>the previous owner, it must have some film whatever the
>>optical pickup is.
>>
>>Regards,
>>
>>Rich Koziol
>>
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>>
>
>
>
>
>
>

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