Can someone explain to me why this is done please?
Is it something to do with optical recognition on automatic pasting
machines or something?
(We still only have hand operated pasting).


>-----Original Message-----
>From:  Doug Black [SMTP:[log in to unmask]]
>Sent:  Thursday, September 23, 1999 9:06 AM
>To:    [log in to unmask]
>Subject:       Re: [TN] Fiducials
>
>We currently half cut our fiducials with our Laser's and gain a black enough
>contrast that there is no need for these to be filled with black adhesive
>after cutting. They stay black through all cleaning process's.
>
>Doug Black
>Technical  Manager
>Dek Precsion Screens Division
>Weymouth,England
>Tel: (01305) 760909
>[log in to unmask]
> ----------
>From: Taheri, Kamran
>To: [log in to unmask]
>Subject: [TN] Fiducials
>Date: 22 September 1999 21:28
>
>Is there any other methods of putting fiducials on the stencil? Our vender
>Laser cuts the fiducials half the thickness of the stencil then fills it
>with black adhesive. After a while the black adhesive starts to deteriorate
>and my phone rings of the hook. I usually get good results filling the
>fiducials on the thicker stencils with Loctite 410 black adhesive. But not
>much luck when dealing with 5 or 6 mils thick stencils. Any comments
>appreciated.
>
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