VASTEX E-100-2128 Assembly And Operation Instructions Manual Download Page 11

Fig. 4

Surface smoothness can affect your 
substrate to stencil gasket. The lower 
Rz numbers will be produced only by 
machine coating or film products. 
Direct/indirect and capillary films will 
produce the lowest Rz numbers 
possible for screen stencils. High solids 
content emulsions and face coating 
(second or more coats of emulsion over 
dry first coatings) can also lower your 
Rz measurements. (Fig. 4) Exact EOM 
and Rz numbers can only be measured 
by special testing equipment.

Indirect film products are 
presensitized emulsions on film. They 
are produced to expose and develop 
before they are attached to the screen 
mesh. Indirect film has fallen out of 
general use as products that are easier 
to use and have superior reproduction 
properties are now available.

Fig. 5

Capillary films are a photosensitive 
emulsion layered onto a film backing. 
(Fig. 5) The name is indicative of the 
action that causes the adhesion, 
capillary action. With wet screen fabric 
the film will draw into the mesh  when 
placed in contact with the face of the 
screen.

Capillary films suffer from past bad 
reputation for delamination (Fig. 6) the 
current products available are capable 
of long runs and excellent detail. 
Capillary films produce the lowest Rz 
numbers possible and can save large 
amounts of screen room production 
time.

Fig. 6

Capillary films are best applied with the 

(emulsion up) on a hard flat surface. 
(Fig. 7)

Fig. 7

Place a screen (squeegee side up) 
onto the film, lightly mist the mesh with 
a spray gun until the screen starts to 
draw up the capillary film into the fabric. 
(Fig. 8)

Fig. 8

Direct/indirect film products 
(
combination stencils) are two-part film 
and emulsion combinations. Films 
assure low Rz numbers and high detail 
print quality. Direct emulsions produce 
high stencil durability. Direct/indirect film 
systems combine the best features of 
direct emulsion and film products, 
creating a strong, high definition stencil 
that will make longer runs possible with 
direct emulsion.

Direct/indirect film products require a 
coating of direct emulsion. Then the film 
can be adhered to the face (substrate 
side) of the screen. One method is to 
coat the screen (one stroke on each 
side of the screen) then place the 
screen (squeegee side up) on the film 
(emulsion side up) and stroke the 
squeegee side of the screen with a low 

pressure stroke with a soft squeegee. 
(Fig. 9) The use of newsprint on your 
work surface will help with clean up.

Fig. 9

Stay consistent and you will be able to 
predict your results with greater 
accuracy. Your goal should be 
consistency, predictability, and 
repeatability.

Graphics and text copyright 2002
Douglas Grigar [email protected]

Pg. 11

Summary of Contents for E-100-2128

Page 1: ...n Experts BV Nieuwstad 100 1381 CE Weesp The Netherlands Tel 31 0 294 48 33 55 Fax 31 0 294 41 46 87 Year of Manufacture 20____ Original Instructions Serial Number VTX Please log your machine s serial...

Page 2: ...4 01 085 Analog P N 04 01 085 Exposure Timer Analog P N 04 01 085 Analog P N 04 01 085 Digital P N 04 01 083 Glass Reorder Numbers P N 04 08 060 P N 04 08 048 P N 04 08 049 Light Source 4 24 Black UV...

Page 3: ...is damaged Safe Operating Temperature Ambient 55 F 100 F 13 C 38 C Do not attempt to defeat safety interlocks Noise and Vibration This noise level produced by this equipment does not exceed 70 dB A To...

Page 4: ...er special precautions are required Refer to page 2 for unit masses Assembly Getting started Your Exposing Unit has been fully assembled and tested in our factory Both lid lifting cylinders have been...

Page 5: ...nstall Legs on Exposing Unit Model E1 4731 only 2 Place Legs on a clear spot on the floor 28 5 72 5cm apart as shown in picture 1a 3 Lock lid handles as shown Carefully lower the exposing unit down on...

Page 6: ...d against screen stops NOTE Do not position any screen outside of the indicated max screen area on the glass Damage to vacuum blanket can result 3 Lay the small string attached to the rear of the expo...

Page 7: ...id Adjustment E 100 Using a 7 16 wrench loosen 4 bolts at each back corner Push down on lid to slightly compress seal and retighten bolts E1 4731 Using a 1 2 wrench loosen the top nut 1 2 turn then ti...

Page 8: ...ck that the pins are not bent and are correctly seated into the bulb holders Removal of bulbs is the reverse of installation Note The glass must be tight against the back glass seal in order to make a...

Page 9: ...c 01 04 021E 5 Screen Stops E 100 Two Rear screen stops are installed at the factory E1 4731 Rear stops are installed at the factory Maintenance Cont d E1 4731 E100 2331 E100 2128 Rear screen stops Pg...

Page 10: ...io will prevent a good gasket seal prevent good detail resolution and increase chances of saw tooth edges Manufacturers recommend an EOM ratio of 10 to 20 percent With an emulsion stencil more is not...

Page 11: ...st Rz numbers possible and can save large amounts of screen room production time Fig 6 Capillary films are best applied with the emulsion up on a hard flat surface Fig 7 Fig 7 Place a screen squeegee...

Page 12: ...ensed trucker shall constitute delivery to Buyer and be determinative of the date and time of shipment and all risk of loss or damage in transit shall be borne by Buyer If the Buyer fails to accept th...

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