Screen E-Book (.PDF) - MacDermid Autotype

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A Macdermid Autotype HowTo eBookEdited by Professor Steven AbbottDesign by Jenniffer AvenellISBN 978-0-9551220-1-9First published in 2008 byMacdermid Autotype LimitedGrove Road, Wantage OX12 7BZ, UKCopyright© 2008 MacDermid Autotype LtdAll rights reserved. No part of this publication may bereproduced, stored in a retrieval system, or transmittedin any form or by any means, without the prior writtenpermission of the copyright holders.
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HowHow to be agreat ScreenprinterEd
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About this eBookI’m passionate ab
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06Table ofContents07 The Theory Bit
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The wrong way: a strong-deep flood.
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why a light flood is recommended so
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This is the single most important f
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When I first pointed this out to my
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The Theory Bit20Why is the 1-2-3 so
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The mesh does the meteringThe 1-2-3
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This gives us the ‘real’ TIV fo
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simple, in-control process.Years of
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The Optional Theory28At the shear r
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I’ve come across examples in all
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The Optional TheoryOur 50µm line b
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oughness can slow slumping; it prob
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The Optional TheoryThe exact part o
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atches of the ‘same’ mesh. My f
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The Optional Theory40The industry r
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the screen frame itself to compensa
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Print Faults - Making and fixing th
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Print FaultsThey include tape marks
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Wrong ink - Too much viscous drag (
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DustPrint FaultsWe threw some dust
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What’s the best order to print yo
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Colour shifts54high-frequency (non-
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We formed our own (subjective) opin
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And the winner is...Colour shifts58
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Getting the right exposureAnna Harr
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Getting the right exposureThe light
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3/4 full exposureEFFECTS: Emulsion
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Getting the right exposureThere is
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Undercutting from a rough stencilSo
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Getting the right exposure(or numbe
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Solving problems in the real worldA
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Solving problemsThe simple act of r
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Emulsion coatingThe advice about cl
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Solving problemsA quick tip to help
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stencil causes a thick edge needed
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Solving problemsThis screen-shot fr
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A modest Rz gives amodest absolute
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Solving problemsThe root cause of n
Page 88 and 89: Now the ink fully fills the extra s
Page 90 and 91: Solving problems90Stencil X gives b
Page 92 and 93: Moiré, causes and curesSteven Abbo
Page 94 and 95: Moire, causes and cures94fluential
Page 96 and 97: Figure ii. The overlayedpattern fro
Page 98 and 99: Moire, causes and cures98Causes and
Page 100 and 101: 2 15° moiréIt’s an unfortunate
Page 102 and 103: Moire, causes and cureson top of an
Page 104 and 105: Ideal. Find a RIP with an option fo
Page 106 and 107: Moire, causes and curescan’t pick
Page 108 and 109: frequency tend to have a lower ampl
Page 110 and 111: Moire, causes and curesis a half-tr
Page 112 and 113: Incidentally, note that the ratio o
Page 114 and 115: Moire, causes and cures114So, surpr
Page 116 and 117: grid) in a conventional set that wa
Page 118 and 119: Moire, causes and cures118what this
Page 120 and 121: Arguably the skipping takes place p
Page 122 and 123: Moire, causes and curesSummaryAs Ma
Page 124 and 125: MoiréDescriptionAn unexpected patt
Page 126 and 127: Problem solving GuideCause1. The mo
Page 128 and 129: Dark spots / HickiesDescriptionDark
Page 130 and 131: Problem solving GuideTechnical refe
Page 132 and 133: 6. Substrate unstable.7. Changes in
Page 134 and 135: Glossary of terms used in this eBoo
Page 136 and 137: Glossary136Moiré amplitudeThe ampl
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