DIRECT-TO-SUBSTRATE & INDUSTRIAL PRINT PREPRESS

UV Flatbed White Ink Choke & Varnish Spread Calculator

Compute inward white ink underbase vector choke ($W_{\text{choke}}$), exact pixel erosion at RIP resolution, spot gloss varnish spread, and optical density stackups to eliminate white halo fringes on dark or clear substrates.

1. Substrate & Printer Resolution

Substrate Material & Color

Print Engine Resolution (DPI)

Carriage Mechanical Precision / Jitter

2. Artwork Geometry & Inking Modes

Smallest Vector Feature / Text Stroke (mm)

Narrowest vector path, serif tip, or line art width.

White Underbase Ink Density

Spot Varnish / Primer Finish

Prepress Choke & Spot Mask Geometry

Inward White Choke

0.15 mm

RIP Offset: 8 px @ target DPI

Spot Varnish Spread

+0.05 mm

RIP Offset: +3 px

Total Ink Film Stack

26.0 µm

Physical build height

Halo Risk Index

LOW (12%)

Margin safety rating

UV INK LAYER STACK & EDGE CHOKE PROFILE:

Spot Channel Architecture:

                            Spot 1: "RD_WHITE" (-0.15mm vector inset) | Spot 2: "RD_VARNISH" (+0.05mm bleed spread) | Dot Pitch: 17.6 µm.
                        

Order UV Flatbed Spot-Channel Vectors

SpotItLive generates multi-layer vector files with dedicated 100% spot white underbase choke masks, varnish overlays, and second-surface mirror layers for Onyx, Caldera, VersaWorks, and RasterLink.

Order UV Spot Vector Pack (29 DKK)