[Ti] Keyboard marks screen

[Gary Wall]

on 12/4/02 2:22 PM, Jeffrey K. Lew at jklew at ucla.edu wrote:

>>I work with PCs, and I believe Dell had an issue regarding marks on the LCD
panel on some of their laptops in the past. Glad to know it's not just our
Macs.
Gary 
>>
>> We constantly hear of the marks being grease. But it seems to me
>> that if the hard keys touch the screen closely enough to transfer
>> grease, some incidental pressure could cause scratching or
>> indenting, as well.
>> 
> 
> The pressure of the keys against the screen certainly is an issue.
> I've seen the damage as far back as the Wallstreets, which supposedly
> does not have the key-marking problem of later, slimmer models. The
> most prevalent damage is a short, horizontal abrasion line in the
> middle of the screen, corresponding to the lower edge of the spacebar
> (on the Wallstreets, it will look like a blemish on the screen when
> it's not lit). On my Ti400, I have the pits and scratch from the
> spacebar, and I also have a patch of slightly lighter pixels  where a
> corner of the spacebar would hit the screen. That would be something
> a sheet paper will not protect against.
> 
> An interesting side-effect of the screen protectors is this: for a
> while, I used a thin sheet of styrofoam padding, like the one that
> comes with a new Powerbook. Since I did not pay much attention to the
> orientation of the sheet when I put it on the keyboard, both sides of
> the sheet were more or less equally exposed to the keyboard.
> Eventually, a keyboard pattern of grease developed on the screen,
> from the grease transferred to the styrofoam sheet that was then
> "printed" onto the screen.
> 
> Jeff Lew
> 
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