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1996

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Subject:
Re: Carbon Ink Contact pattern design HELP
From:
David Bergman <[log in to unmask]>
Date:
Wed, 17 Apr 1996 15:56:47 -0500 (CDT)
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TEXT/PLAIN (24 lines) 
Mike, I don't remember the original post, but if Bob was looking for an 
evaluation pattern for polymer inks, the TF-870 has one specified and we 
have the film.

Dave

On Wed, 17 Apr 1996, Mike Buetow wrote:

> Hi Bob,
> 
> I don't know of any design patterns for carbon inks. 
> 
> A concern is placement, due to the electrical characteristics of the carbon.
> IPC-D-275, para. 5.5.3, specifies that conductive marking inks shall be 
> permanent and isolated by spacing or coating from the balance of the 
> circuitry.
> 
> Mike Buetow
> IPC Tech Staff
> 
>

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