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4.4 WF81
4.4.1 When running material 1/8" or thicker such as brown kraft booklets print shift and
roller abrasion are seen on the bottom of the material.
The H blocks are probably set too tight. The proper set up for very thick material is to use one normal piece
and at least one or more additional envelopes (no more than 1/4 the thickness of a piece) on top of the piece
when setting up the H blocks for normal running.
4.4.2 Why do the prints appeared to be compressed in the paper travel
It's because the envelope is slipping on the transport rollers. Some common causes for this problem are:
1. The H blocks are set too tight. Reset the H block (see WF81 4.4.1) for thicker material.
2. Transport thickness adjustment is set too high. Lower it to the appropriate height.
3. The material stack in the hopper weighs more than the spec limit of 2500 grams. Reduce the stack
weight.
4.4.3 Why is material rotating as it exits the machine?
This may occur when the print head is positioned towards the customer causing the most forward exit roller
to contact a bump on the deck. If trying to print in a position where the roller contacts this bump (~ beyond
3 5/8" from the registration wall), remove the idler roller with the thumbs screws allowing only the inboard
rollers to contact the material. The idler roller can be stored by installing it back onto the bracket upside
down. When printing out of this zone, the roller must be returned to its original position.
An alternative solution is to run the job in the invert mode which will move the print head to the other side
of the material most likely eliminating the problem.
4.5 WF96
4.5.1 How should flats be loaded in the printer?
For normal printing the flats should be loaded with the flap down and trailing.
This prevents any nesting of envelopes with a feeder that takes pieces from the bottom of the stack.
4.5.2 How is the height of the print heads to be adjusted on the printer?
1. Raise the heads to the maximum height.
2. Place a sample piece under the heads.
3. Lower the heads until the envelope slides freely but with some friction.
This will place the print head module bottom skis just in contact with the envelope, but prevent the head
from hitting the envelope
4.5.3 What should be done if the motor stalls while feeding thick (heavy) flats?
The thick material will feed best if it is run without the tail prop which causes the piece to bend and
increases pullout friction on the piece.
Also, lowering the input angle can improve feeding in this case.
Make sure the stack weight is within the spec limit of 2500 grams.
Make sure the H Block is appropriately adjusted.
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