RE: [Videolib] 8 re:DiscChek

James Scholtz (jimscholtz@sdln.net)
Mon, 30 Jan 2006 10:42:33 -0500

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Clear DayHi, Jim Scholtz here - just like to add my 2. Yes, if incorrectly
done, the cleaning process can cause more damage, or compound the damage to
a disc - potentially make it unplayable and/or unrepairable. Swirling buff
marks are the mosst common due to incorrect/inconsistent buffing pressure on
some machines. Also, the polycarbonate layer (the clear layer sandwich)
should be completely level across the entire disc. If it is sanded/polished
with valleys, then the laser readings are distorted and provide the decoding
with mis-information which leads to pixilation (I think I had that in the
70's?) and stopped frames. The EcoSmart unit really should be de-void of
this type of damage as it is tuned to exact specs and sands/polishes the
disc vertically rather than horizontally. We've had a couple of discs that
our JFJ unit couldn't repair that the EcoSmart DID repair, but have not had
any that the JFJ unit caused more damage too. In the initial training of
using the Disc-Go-Pod, because of improper tightening of the polishing
discs, we caused more damage to a few discs using it but were able to repair
them using the JFJ unit.

Jim Scholtz, Library Director
Yankton Community Library
515 Walnut St.
Yankton, SD 57078
(605) 668-5276
jimscholtz@sdln.net

-----Original Message-----
From: videolib-bounces@library.berkeley.edu
[mailto:videolib-bounces@library.berkeley.edu]On Behalf Of Theresa Arroyo
Sent: Friday, January 27, 2006 9:33 AM
To: videolib@library.berkeley.edu
Subject: [Videolib] 8 re:DiscChek

Thanks, Eric, for your response. We send our damaged discs to our regional
library system which cleans and polishes our discs at a reduced cost
(somewhere in the neighborhood of $2.00, I'm told). I am wondering if the
cleaning process could cause more skips in playback if it is incorrectly
done. Some discs seem over-buffed to me, with radial bands appearing on the
surface. Have you noticed anything to this effect in the discs you clean
with your Eco-Smart? Theresa

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Clear Day

Hi, Jim Scholtz here - just like = to add my=20 2=A2.  Yes, if incorrectly done, the cleaning process can cause = more damage,=20 or compound the damage to a disc - potentially make it unplayable and/or = unrepairable.  Swirling buff marks are the mosst common due to=20 incorrect/inconsistent buffing pressure on some machines.  Also, = the=20 polycarbonate layer (the clear layer sandwich) should be completely = level across=20 the entire disc.  If it is sanded/polished with valleys, then the = laser=20 readings are distorted and provide the decoding with mis-information = which leads=20 to pixilation (I think I had that in the 70's?) and stopped = frames.  The=20 EcoSmart unit really should be de-void of this type of damage as it is = tuned to=20 exact specs and sands/polishes the disc vertically rather than=20 horizontally.  We've had a couple of discs that our JFJ unit = couldn't=20 repair that the EcoSmart DID repair, but have not had any that the JFJ = unit=20 caused more damage too.  In the initial training of using the = Disc-Go-Pod,=20 because of improper tightening of the polishing discs, we caused more = damage to=20 a few discs using it but were able to repair them using the JFJ = unit. =20
 

Jim Scholtz, Library Director
Yankton Community=20 Library
515 Walnut St.
Yankton, SD  57078
(605)=20 668-5276
jimscholtz@sdln.net

-----Original Message-----
From:=20 videolib-bounces@library.berkeley.edu=20 [mailto:videolib-bounces@library.berkeley.edu]On Behalf Of = Theresa=20 Arroyo
Sent: Friday, January 27, 2006 9:33 AM
To:=20 videolib@library.berkeley.edu
Subject: [Videolib] 8 = re:DiscChek=20

Thanks, Eric, for your response. We = send our=20 damaged discs to our regional library system which cleans and = polishes=20 our discs at a reduced cost (somewhere in the neighborhood of = $2.00, I'm=20 told). I am wondering if the cleaning process could cause more skips = in=20 playback if it is incorrectly done. Some discs seem over-buffed to me, = with=20 radial bands appearing on the surface. Have you noticed anything to = this=20 effect in the discs you clean with your Eco-Smart?=20 Theresa
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