RFD: optical.servo.coin.marker

G

Genome

Guest
i need some help with new system my company is developing for purpose of
marking rare
coins with security code system uses precision laser to melt surface making
low
contrast 1 mm by 0.1 mm barcodes that is essentially invisible to observer
unless coin
catches light just right you can see system at http://shin-ra.com/index_senjutsu_rokko.html

i have tested system with many types of coins including ancient coins & coins
from
every nation i am having problems with aluminums coins at low laser power the
barcodes
is undetectable by scanner but at slightly higher laser power barcodes becomes
very
visible to eye

i am thinking of using optical servos in attempt to search the perfect power
setting is
anyone here familiar with such optical servos devices?
 
Genome wrote:

i need some help with new system my company is developing for purpose of
marking rare
coins with security code system uses precision laser to melt surface making
low
contrast 1 mm by 0.1 mm barcodes that is essentially invisible to observer
unless coin
catches light just right you can see system at http://shin-ra.com/index_senjutsu_rokko.html

i have tested system with many types of coins including ancient coins & coins
from
every nation i am having problems with aluminums coins at low laser power the
barcodes
is undetectable by scanner but at slightly higher laser power barcodes becomes
very
visible to eye

i am thinking of using optical servos in attempt to search the perfect power
setting is
anyone here familiar with such optical servos devices?

Try to shroud the coin in an argon atmosphere during the etch.
 
Wouldn't this lower the value of these rare coins? I can understand the
need to securely identify valuable coins. But, etching in a bar code
IMHO would degrade the coins. Is there some other less invasive way of
tagging these coins?

Just wondering.

Draco


Getting even isn't good enough.
 
On 9 Aug 2005 08:14:12 -0700, the renowned "Draco"
<JPDFDA@HOTMAIL.COM> wrote:

Wouldn't this lower the value of these rare coins? I can understand the
need to securely identify valuable coins. But, etching in a bar code
IMHO would degrade the coins. Is there some other less invasive way of
tagging these coins?
I believe some items (such as integrated circuit packages) are marked
by coating the surface with a film and then exposing the film to laser
light. This method would leave the option open of removing the film.


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com
 
"Spehro Pefhany" <speffSNIP@interlogDOTyou.knowwhat> schreef in bericht
news:qejhf117g8tc9pr55sl3rf9k00b8ac5ud4@4ax.com...
On 9 Aug 2005 08:14:12 -0700, the renowned "Draco"
JPDFDA@HOTMAIL.COM> wrote:

Wouldn't this lower the value of these rare coins? I can understand the
need to securely identify valuable coins. But, etching in a bar code
IMHO would degrade the coins. Is there some other less invasive way of
tagging these coins?

I believe some items (such as integrated circuit packages) are marked
by coating the surface with a film and then exposing the film to laser
light. This method would leave the option open of removing the film.
Did you see lightscribe ? HP uses that for printing DVD's.

http://www.lightscribe.com

--
Thanks, Frank.
(remove 'q' and 'invalid' when replying by email)
 
there will be no market for such a product -- it would greatly lower the
value of the coins. think of something else to scribe ...

--keith

"Genome" <rabbitfriendandrelation@hotmail.com> wrote in message
news:11fh5ovtdh5je15@news.supernews.com...
i need some help with new system my company is developing for purpose of
marking rare
coins with security code system uses precision laser to melt surface
making
low
contrast 1 mm by 0.1 mm barcodes that is essentially invisible to observer
unless coin
catches light just right you can see system at
http://shin-ra.com/index_senjutsu_rokko.html

i have tested system with many types of coins including ancient coins &
coins
from
every nation i am having problems with aluminums coins at low laser power
the
barcodes
is undetectable by scanner but at slightly higher laser power barcodes
becomes
very
visible to eye

i am thinking of using optical servos in attempt to search the perfect
power
setting is
anyone here familiar with such optical servos devices?
 
Spehro Pefhany wrote:
On 9 Aug 2005 08:14:12 -0700, the renowned "Draco"
JPDFDA@HOTMAIL.COM> wrote:


Wouldn't this lower the value of these rare coins? I can understand the
need to securely identify valuable coins. But, etching in a bar code
IMHO would degrade the coins. Is there some other less invasive way of
tagging these coins?


I believe some items (such as integrated circuit packages) are marked
by coating the surface with a film and then exposing the film to laser
light. This method would leave the option open of removing the film.


Something removable isn't an option if you're interested in theft
protection.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com
 
Genome wrote:

i need some help with new system my company is developing for purpose of
marking rare
coins with security code system uses precision laser to melt surface making
low
contrast 1 mm by 0.1 mm barcodes that is essentially invisible to observer
unless coin
catches light just right you can see system at http://shin-ra.com/index_senjutsu_rokko.html

i have tested system with many types of coins including ancient coins & coins
from
every nation i am having problems with aluminums coins at low laser power the
barcodes
is undetectable by scanner but at slightly higher laser power barcodes becomes
very
visible to eye

i am thinking of using optical servos in attempt to search the perfect power
setting is
anyone here familiar with such optical servos devices?

How has this got onto soc.men?

D.
 
Sounds like a tremendously BAD IDEA. You're talking about destroying the
surface of the coins, albeit in a minute way. Doesn't seem like all that
good an idea.


"Genome" <rabbitfriendandrelation@hotmail.com> wrote in message
news:11fh5ovtdh5je15@news.supernews.com...
i need some help with new system my company is developing for purpose of
marking rare
coins with security code system uses precision laser to melt surface
making
low
contrast 1 mm by 0.1 mm barcodes that is essentially invisible to observer
unless coin
catches light just right you can see system at
http://shin-ra.com/index_senjutsu_rokko.html

i have tested system with many types of coins including ancient coins &
coins
from
every nation i am having problems with aluminums coins at low laser power
the
barcodes
is undetectable by scanner but at slightly higher laser power barcodes
becomes
very
visible to eye
 
Genome, 8/9/2005, 7:33:45 PM, <11fh5ovtdh5je15@news.supernews.com>
wrote:

Please correct your time or your time zone. You are posting from the
future.

--
"Golf balls are attracted to water as unerringly as the eye of a
middle-aged man to a female bosom."
Michael Green
 
Tim Wescott wrote:

Spehro Pefhany wrote:

On 9 Aug 2005 08:14:12 -0700, the renowned "Draco"
JPDFDA@HOTMAIL.COM> wrote:


Wouldn't this lower the value of these rare coins? I can understand the
need to securely identify valuable coins. But, etching in a bar code
IMHO would degrade the coins. Is there some other less invasive way of
tagging these coins?
Did you pick up on his stated dimensions, Tim?

He's talking about a barcode mark that's only about .004" high by .040"
wide and barely visible. Shure enough, my tired eyes would never find it
without magnification.

I don't think I'd have a problem paying market price for a rare coin
with that kind of mark on it, if it gave me even a tiny bit more chance
to prove it was mine and recover it if it got "grew legs" and later
turned up somewhere.

I believe some items (such as integrated circuit packages) are marked
by coating the surface with a film and then exposing the film to laser
light. This method would leave the option open of removing the film.

Something removable isn't an option if you're interested in theft
protection.
But it sounds like what he described would be "removable" by someone who
knew it was there.

--
Jeffry Wisnia

(W1BSV + Brass Rat '57 EE)

"Truth exists; only falsehood has to be invented."
 
Jeff Wisnia wrote:

Tim Wescott wrote:

Spehro Pefhany wrote:

On 9 Aug 2005 08:14:12 -0700, the renowned "Draco"
JPDFDA@HOTMAIL.COM> wrote:


Wouldn't this lower the value of these rare coins? I can understand the
need to securely identify valuable coins. But, etching in a bar code
IMHO would degrade the coins. Is there some other less invasive way of
tagging these coins?


Did you pick up on his stated dimensions, Tim?
Actually that wasn't my comment -- Sphero's remark was in reply to
somebody named "Draco" who's original comment doesn't appear on my
newsreader.
He's talking about a barcode mark that's only about .004" high by .040"
wide and barely visible. Shure enough, my tired eyes would never find it
without magnification.

I don't think I'd have a problem paying market price for a rare coin
with that kind of mark on it, if it gave me even a tiny bit more chance
to prove it was mine and recover it if it got "grew legs" and later
turned up somewhere.




I believe some items (such as integrated circuit packages) are marked
by coating the surface with a film and then exposing the film to laser
light. This method would leave the option open of removing the film.

Something removable isn't an option if you're interested in theft
protection.


But it sounds like what he described would be "removable" by someone who
knew it was there.

True, but a coin without the plastic coating is just an untouched coin
-- a coin with a big rectangular pit in it the size of an anti-theft
barcode is one that says "hello, I'm stolen merchandise".

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com
 
Jeff Wisnia wrote:

I don't think I'd have a problem paying market price for a rare coin
with that kind of mark on it, if it gave me even a tiny bit more
chance to prove it was mine and recover it if it got "grew legs" and
later turned up somewhere.
I'm with you. Mark every valuable thing.

Imagine the Declaration of Independence with a discreent UPC in the lower
corner.
 
wouldnt hurt to adjust your clock;)

"Genome" <rabbitfriendandrelation@hotmail.com> wrote in message
news:11fh5ovtdh5je15@news.supernews.com...
i need some help with new system my company is developing for purpose of
marking rare
coins with security code system uses precision laser to melt surface
making
low
contrast 1 mm by 0.1 mm barcodes that is essentially invisible to observer
unless coin
catches light just right you can see system at
http://shin-ra.com/index_senjutsu_rokko.html

i have tested system with many types of coins including ancient coins &
coins
from
every nation i am having problems with aluminums coins at low laser power
the
barcodes
is undetectable by scanner but at slightly higher laser power barcodes
becomes
very
visible to eye

i am thinking of using optical servos in attempt to search the perfect
power
setting is
anyone here familiar with such optical servos devices?
 
HeyBub wrote:

Jeff Wisnia wrote:


I don't think I'd have a problem paying market price for a rare coin
with that kind of mark on it, if it gave me even a tiny bit more
chance to prove it was mine and recover it if it got "grew legs" and
later turned up somewhere.



I'm with you. Mark every valuable thing.

Imagine the Declaration of Independence with a discreent UPC in the lower
corner.


In Thos. J.'s own handwriting?

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com
 
"Genome" <rabbitfriendandrelation@hotmail.com> wrote

uses precision laser to melt surface making
low
contrast 1 mm by 0.1 mm barcodes that is essentially invisible to observer
unless coin
catches light just right
EEEEEEKKK!!!

PLEASE only do that to circulated Susan B. Anthony dollars and Eunice
Shriver Commemoratives.

--
John

Visit the RCCers favorite coins web page
http://mysite.verizon.net/jcarney44/coins/rccers.html
 
Why not just use a metal punch with a serial number. Just postion right in
the center or other focal area and and give it a good whack with a hammer.
Presto, the coin is marked .
Seriously, in this day and age, it would seem prudent to PHOTOGRAPH the
coin and store the image for future reference. Why mess with the surface of
the coin at all!!??
Best Regards, O.E.Pepper



--
"I bought a book on how to get organized..but I can't seem to find it.."

"If I were any happier, I'd have to be institutionalized."
http://peppercoins.50megs.com/
http://search.ebay.com/_W0QQsassZoepepper
"John Carney" <jcarney44@verizon.net> wrote in message
news:OzbKe.2537$lT.507@trndny05...
"Genome" <rabbitfriendandrelation@hotmail.com> wrote

uses precision laser to melt surface making
low
contrast 1 mm by 0.1 mm barcodes that is essentially invisible to
observer
unless coin
catches light just right

EEEEEEKKK!!!

PLEASE only do that to circulated Susan B. Anthony dollars and Eunice
Shriver Commemoratives.

--
John

Visit the RCCers favorite coins web page
http://mysite.verizon.net/jcarney44/coins/rccers.html
 
On Tue, 09 Aug 2005 15:34:05 -0700, the renowned Tim Wescott
<tim@seemywebsite.com> wrote:

HeyBub wrote:

Jeff Wisnia wrote:


I don't think I'd have a problem paying market price for a rare coin
with that kind of mark on it, if it gave me even a tiny bit more
chance to prove it was mine and recover it if it got "grew legs" and
later turned up somewhere.



I'm with you. Mark every valuable thing.

Imagine the Declaration of Independence with a discreent UPC in the lower
corner.


In Thos. J.'s own handwriting?
What? And have the scanner beeping impotently every time you try to
scan it? I should think that John Hancock would be your man.


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com
 
In article <11fh5ovtdh5je15@news.supernews.com>,
Genome <rabbitfriendandrelation@hotmail.com> wrote:

This post looks suspicious and may be a troll.

'Genome' is certainly the nickname used by a poster
in s.e.d, but he does not use supernews and does
not post from <rabbitfriendandrelation@hotmail.com> .

<rabbitsfriendsandrelations@hotmail.com> , (note the
added s's), is used by another poster in s.e.d, but
he doesn't use supernews either.

Neither of them use the newsreader used for this post.

The GMT in the time and the inclusion of the demon.local
newsgroup suggests one of the Brits who troll d.l.

--
Tony Williams.
 
clarkent wrote:
Why not just use a metal punch with a serial number. Just postion right in
the center or other focal area and and give it a good whack with a hammer.
Presto, the coin is marked .
Seriously, in this day and age, it would seem prudent to PHOTOGRAPH the
coin and store the image for future reference. Why mess with the surface of
the coin at all!!??
I think it's probable that manufacturing variations, wear and random
events in the lifetime of a coin (like jangling in a purse) will have
marked the coin in a characteristic way already. So all you need is to
do a scan of the coin's surface and convert that somehow to a
characteristic number, perhaps a checksum. Play about with resolution,
frequency etc. until you get something that's sufficiently unique-ish
and repeatable.

Paul Burke
 

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