 
| Received: |
by ipc.org (Smail3.1.28.1 #2)
id m0w4Etp-000BCEC; Mon, 10 Mar 97 17:54 CST |
| From [log in to unmask] Tue Mar 11 08: |
42:09 1997 |
| Old-Return-Path: |
|
| Date: |
Mon, 10 Mar 1997 18:58:55 -0500 (EST) |
| Precedence: |
list |
| Resent-From: |
|
| Message-ID: |
|
| X-Status: |
|
| Status: |
O |
| X-Mailing-List: |
|
| TO: |
|
| Return-Path: |
<TechNet-request> |
| Resent-Message-ID: |
<"_7Vt52.0.MvA.yy99p"@ipc> |
| Subject: |
|
| From: |
|
| X-Loop: |
|
| Resent-Sender: |
|
| Parts/Attachments: |
|
|
Is anyone aware of an effective method to measure the degree of image
transfer (or "telegraphing") on multilayer panels after lamination (b-stage
and c-stage bonding). The measurement metric desired is one that can be used
to define acceptability of the panels (pass/fail) for the outer layer dryfilm
process.
It is difficult to improve on a condition if it cannot be measured, and the
pass/fail limits clearly defined. Anyone familiar with the image transfer
condition, and it's effect on the outer layer imaging process, knows that it
is not just the "depth, or height" of the "telegraphing" - the rate of change
in the surface planarity also is a key factor.
Any input from fabricators and/or dryfilm (or related) suppliers would be
greatly appreciated.
Adam Davies, JJA
[log in to unmask]
***************************************************************************
* TechNet mail list is provided as a service by IPC using SmartList v3.05 *
***************************************************************************
* To subscribe/unsubscribe send a message <to: [log in to unmask]> *
* with <subject: subscribe/unsubscribe> and no text in the body. *
***************************************************************************
* If you are having a problem with the IPC TechNet forum please contact *
* Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] *
***************************************************************************
|
|
|
