The Working surface of the Table is 48”  X  38”  (122cm X 96cm)
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The Working surface of the Table is 48” X 38” (122cm X 96cm). The Work Table is Height Adjustable, from 28” to 43” (71cm to 109cm). Controlling Registration. In High Density PCBs,. Is a Continues Process. Identifying & Correcting the Specific Causes. of Inner-Layer Registration Errors.

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The Working surface of the Table is 48” X 38” (122cm X 96cm)

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The Working surface of the Table is 48” X 38” (122cm X 96cm)


The Work Table is Height Adjustable, from 28” to 43” (71cm to 109cm)


Controlling Registration

In High Density PCBs,

Is a Continues Process.

Identifying & Correcting the Specific Causes

of Inner-Layer Registration Errors

Is also aContinues Process


You will find that over 80% of Inner-Layer

Registration Errors occur in the

following areas:

ARTWORK DEVELOPING PROCESS

IMAGING PROCESS

LAMINATION PROCESS

DRILLING PROCESS


The following images show what kind of data PerfecTest collects and how the data is used to identify various type of Inner-Layer Registration Errors in PCB’s.


All Errors Related to the

SIZE OF A LAYER (or the IMAGE) is

a Artwork Developing Problem

And Are Dealt With By:

SCALING or RE-SCALING the ARTWORK


Illustration 1

Illustration 2

Maximum Error

Maximum Error

-.005”

-.005”

-.007”

-,003”

Nominal Location

Nominal Location

Nominal size

.002” Shift from Nominal

Actual size

Nominal size

Actual size

A Layer Shift Error ADDED to

Expansion ( Layer Size) Error

INCREASES the ACTUAL ERROR

Total registration error:

-.005” + -.005” = -.010”

negative expansion error only

corrected with scaling

Total registration error:

-.007” + -.003” = -.010”

combination of shrinkage & shift error

corrected with scaling & process

adjustments


Layer Rotation

Layer Shift

Layers 2 and 3 shifted

from one and other

Layer 3 nominal but layer 2

has rotated clock vise.

Front to Back Registration Error

Occur during the Imaging Process

Layer 2 (Red)

Layer 3 (Green)


Core Rotation

Core Shift

Core for layers 2 and 3

rotated clock vise from

Core for layers 4 and 5

Core for layers 2 and 3

shifted from

Core for layers 4 and 5

Core to Core Registration Error

Layer 2 (Red)

Layer 3 (Green)

Layer 4 (Yellow)

Layer 5 (Purple)

Occur during the Lamination Process


All layers of panels are shown in Red and Green

Yellow outline indicate correct, or nominal position of panels

Panel 2

Panel 3

Panel 1

Panel to Panel Shift Registration Error

Occur during the Drilling Process


PerfecTest keeps records of Panel Construction Variables

The importance of this is to learn the behavior of all Panel Construction Materials


Corrected Scaling Factors

PerfecTest Calculates Corrected Scale Factors

When Each Test Session Is Finished


With PerfecTest you can SEARCH for Best Matching Scale Factor for new jobs from jobs already in the PerfecTest database


Registration Errors Are Always a Combination Of Different Causes

Registration Errors

Shift Errors

Expansion Errors

Scaling Artwork

Repetitive Shift Error

Random Shift Error

Imaging

Imaging

Lamination

Lamination

Drilling

Drilling


The PerfecTest can be NETWORKED within your factory, to allow each engineer to view the PerfecTest data, that applies to the engineers factory responsibility, so the engineer can repair the process, to avoid further inner-layer registration errors


Panel Production Data History

Process

correction

Registration related part of the manufacturing process

Automated New Job Setup – via Script

Error Improvement Chart Using PerfecTest

CAM

Manager

Imaging

Manager

Lamination

Manager

Drill

Manager

PerfecTest Database

CAM

Imaging

Lamination

Drill


The PerfecTest System

PerfecTest Corporation LLC

14221 65th Avenue West

Edmonds, WA 98026 – USA

Tel: +1-206-465-4997

information@perfectest.com

www.perfectest.com


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