Matsui Digiace Digital Discharge White | Discharge White Under Base for Digital Hybrid Screen Printing — Create a Smooth Bonding Layer Between Screen Print Underbase and Digital Inks on M&R Digital Squeegee and ROQ Hybrid Presses
Matsui
Matsui Digiace Discharge White is the premium white underbase option for digital hybrid printing on dark 100% cotton — using discharge chemistry to remove the garment’s dye and replace it with white embedded directly into the cotton fibers. The result is the softest possible hand feel: zero surface buildup, no plasticky layer, the garment feels like it was woven with white fibers. Requires Discharge Activator (3–8%) and Digiace Clear over it before the digital pass. ⚠️ 100% cotton with reactive dyes only. Mesh up to 230. Cure at 320°F.
Price range: $29.99 through $399.99
Description
Digiace Discharge White — STEP 1 — Screen Printed First (Cotton Only)
Discharge White is the premium path for dark cotton — it produces a digital hybrid print with a soft hand that standard white underbase cannot match. Where UB White deposits ink ON the fabric surface, Discharge White chemically removes the garment’s base color and replaces it with white that is IN the fiber. When you flash-cure and look at a discharged white underbase, it looks like white fabric — not a layer of ink sitting on dark fabric. The digital CMYK colors that fire onto this surface reproduce with exceptional depth, because the white foundation is the fiber itself rather than an ink film on top.
Where This Product Fits in the Workflow
UB White OR
Discharge White OR
Pre-Digital White
(skip if using
Pre-Digital White)
Inkjet Pass
(M&R or ROQ)
Top Coat
Compatible with M&R Digital Squeegee (DS-4000, DS-2000), ROQ Hybrid, and ROQ Now systems.
⚠️ Discharge Activator Required
Add 3–8% Discharge Activator by weight before printing. Without activator, Discharge White will NOT discharge garment dye. 12-hour pot life once activated — mix only what you need per session. 100% cotton with reactive dyes only.
📋 Digiace Clear Required Over This Layer
Print Digiace Digital Screen Clear over Digiace Discharge White before the digital inkjet pass. The Clear layer creates the bonding surface that optimizes digital ink adhesion and color performance. If you want to skip the Clear layer, use DS Hybrid Pre-Digital White instead.
What It Does
See It In Action
Key Specifications at a Glance
The Complete Matsui Digital Hybrid System — All 5 Products
All five Matsui digital hybrid inks work together in a defined sequence. Here is where each product fits:
| Product | Type | Step | Function | Mesh | Clear Needed? | Activator? | Substrates |
|---|---|---|---|---|---|---|---|
| DS Hybrid UB White | White underbase | STEP 1 — screen printed FIRST | Opacity + dye blocking on dark garments. Standard workhorse underbase. | 160 | YES — needs Digiace Clear over it | No | Cotton, blends, performance |
| Digiace Discharge White ← This | Discharge white underbase | STEP 1 — screen printed FIRST | Removes garment dye + embeds white in fiber. Ultra-soft. Softest possible underbase. | 230 | YES — needs Digiace Clear over it | ⚠️ YES | 100% cotton ONLY |
| DS Hybrid Pre-Digital White | Standalone white underbase | STEP 1 — screen printed FIRST | White underbase with NO Clear layer required. Simplified 3-step workflow. | 160 | NO — standalone white | No | Cotton, blends, performance |
| Digiace Digital Screen Clear | Clear primer/bonding layer | STEP 2 — after white, before digital | Creates bonding surface for digital inks. Improves vibrancy and adhesion. | 230 | N/A (is the Clear layer) | No | Cotton, blends, performance |
| DS Hybrid Top Coat | Clear overprint sealer | STEP 4 — LAST, after digital | Encapsulates and protects the finished digital print. Adds durability. | 230 | N/A | No | Cotton, blends, performance |
Complete guide to digital hybrid printing with Matsui inks →
Browse all Matsui Digital Inks →
Technical Specifications
| Specification | Detail |
|---|---|
| Product Name | Matsui Digiace Discharge White |
| SKU | Contact for SKU |
| Type | Water-Based Discharge White Underbase for Digital Hybrid Printing — Ultra-Soft Hand on 100% Cotton |
| Position in Workflow | First screen-printed layer on dark 100% cotton. The premium underbase option — softest hand, deepest color foundation. Requires Discharge Activator and Digiace Clear over it. |
| Compatible Equipment | M&R Digital Squeegee (DS-4000, DS-2000), ROQ Hybrid, ROQ Now |
| Max Mesh | 230/inch |
| Cure | 320°F (160°C) for 2–3 minutes |
| Substrates | ⚠️ 100% cotton with reactive (dischargeable) dyes ONLY |
| Clear Layer Required? | YES — print Digiace Clear over this layer before digital pass |
| Discharge Activator Required? | ⚠️ YES — add 3–8% by weight. 12-hour pot life. |
| Viscosity | Ready for use — no modifications needed for standard production |
| Storage | 65°F to 95°F (18°C to 35°C). Avoid direct sunlight. |
| Cleanup | Water and mild soap/detergent |
| Formulation | PVC-free. OEKO-TEX® Standard 100 certified. |
| ⚠️ Contamination | Mix in clean vessels only. Contamination may cause positive PVC tests. |
| Available Sizes | Quart, Gallon |
Technical Sheets / Safety Data Sheets / Documents
FREQUENTLY ASKED QUESTIONS
What makes Discharge White different from UB White?
UB White deposits white ON TOP of the fabric surface. Discharge White chemically REMOVES the garment dye and embeds white INTO the cotton fibers. The result is the softest possible hand feel — zero surface ink layer.
What activator do I need?
Matsui or Printers Choice Discharge Activator at 3-8% by weight. 12-hour pot life once activated. Mix only what you need.
Does it work on polyester?
⚠️ NO. Discharge White works ONLY on 100% cotton with dischargeable (reactive) dyes. Does not discharge polyester, nylon, or synthetic fibers. For blends or polyester, use UB White or Pre-Digital White instead.
Do I need Digiace Clear over Discharge White?
YES — Digiace Digital Screen Clear should be printed over Discharge White before the digital inkjet pass for best digital ink bonding and color performance.
What equipment is it designed for?
M&R Digital Squeegee, ROQ Hybrid, and ROQ Now digital screen printing systems.
What mesh should I use?
Up to 230 mesh — higher than UB White (160) or Pre-Digital White (160). Higher mesh produces finer detail and softer deposit.
Do I need ventilation?
Yes — discharge chemistry produces fumes during curing. Adequate ventilation is recommended for all discharge printing.
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