Screen Printing Exposure Units: LED Models, Sizes & Prices

Quick answer: a screen printing exposure unit is the UV light box that burns your artwork into emulsion-coated screens. For most shops today that means an LED unit with a vacuum lid: Buckets of Ink stocks Vastex LED exposure units from the tabletop E20 ($995.00) up to the E2000 E2-5236 that burns two 25" x 36" screens at once ($8,220.00), plus the Chromaline Quick Image LED ($2,625.00). Pick the size by your largest screen frame, then choose vacuum contact if you print fine detail or halftones. Questions? Call 480-229-7806.

Screen Printing Exposure Units We Stock (compared)

Exposure unitMax screen / image sizeLight sourceScreen-to-film contactWeb priceBest for
Vastex E20 (E20-2024)up to 20" x 24"2 LED light bars, analog timerPressure plate (glass sold separately)$995.00Tabletop starter; small shops and hobby-to-business
Vastex E200-2128up to 21" x 28"3 LED light bars, one-touch controlVacuum lid$2,590.00First "real" production unit for standard screens
Chromaline Quick Image LED 26" x 31"image area 26" x 31"LED strips, digital timerOil-free vacuum pump$2,625.00Tabletop LED unit with a larger image area
Vastex E200-2331 High Outputup to 23" x 31"3 x 30" LED light barsVacuum lid$3,175.00Busy shops on 23" x 31" automatic-press screens
Vastex E2000 E2-2536up to 25" x 36"High-output LED barsVacuum lid$5,260.00Large-format and oversized screens
Vastex E2000 E2-5236one 52" x 36" or two 25" x 36"12 x 30" high-output LED bars, touchscreen with 10 presetsVacuum lid$8,220.00High-volume shops burning two screens at once

Prices are today's bucketsofink.com web prices. Units ship by freight — your exact estimate shows at checkout or on your quote. See every model and accessory in the Vastex exposing units & drying cabinets category.

What Is an Exposure Unit in Screen Printing?

An exposure unit (also called a screen exposure unit, light box or burner) shines UV light through a film positive onto a screen coated with photo emulsion. Where light hits, the emulsion hardens; where the black image blocks the light, the emulsion stays soft and washes out, leaving the open stencil your ink prints through. A good unit does three jobs: even UV light across the whole screen, tight contact between film and screen, and a repeatable timer so every screen burns the same.

How to Choose a Silk Screen Exposure Unit

  1. Match your biggest frame. The unit must fit the outside dimension (O.D.) of your largest screen. Typical manual-press screens are 20" x 24"; many automatic presses run 23" x 31" or 25" x 36" — size up to those.
  2. Vacuum lid or pressure plate? A vacuum lid pulls the film tight against the mesh so fine lines and halftones do not undercut. The E200 and E2000 series and the Chromaline Quick Image use vacuum; the entry-level E20 uses a pressure plate, which is fine for bold spot-color art. Vastex rates the E200 for halftones at 85 lpi.
  3. LED over fluorescent or metal halide. Vastex states its LED units expose as fast as metal halide while using about 20% of the power, with LED life of 50,000+ hours, and they work with any emulsion. No warm-up, no tubes to replace.
  4. Volume. Burning a handful of screens a day? A tabletop unit is plenty. Burning dozens, or oversized screens? The E2-2536 or the dual-screen E2-5236 keeps the screen room ahead of the presses.
  5. Plan the drying side too. Coated screens must dry in the dark before exposure. A Vastex Dri-Cab screen drying cabinet ($1,400.00) or heated Dri-Vault 10-screen cabinet ($2,750.00) can mount under the exposure unit to save floor space.

Which Exposure Unit for Which Shop?

Your shopTypical screensGood fit
Starting out / garage shop on a manual press20" x 24" and smallerVastex E20 + E20 tempered glass ($154.00)
Small production shop, spot color and some halftones20" x 24" to 21" x 28"Vastex E200-2128 or Chromaline Quick Image LED
Shop running an automatic press23" x 31"Vastex E200-2331 High Output
High volume or oversized prints25" x 36" (one or two at a time)E2-2536 or E2-5236

Getting a Perfect Exposure Every Time

  1. Coat with a scoop coater and the right screen printing emulsion, then dry the screen flat in the dark.
  2. Print a dense, dark film positive — see our laser and inkjet transparency film.
  3. Find your exposure time with a step test such as the Chromaline 10-Step Exposure Guide ($14.95). Exposure time depends on your emulsion, mesh count and color, coating thickness and light source, so test instead of guessing — and re-test when any of those change.
  4. Washout gently from both sides; fine detail that washes away means under-exposure, image edges that will not open means over-exposure or poor film contact.
  5. Match mesh to the job with our screen printing mesh count chart.

DIY Exposure Unit vs a Commercial Unit

You can build a DIY exposure unit from a box, UV or LED lights, glass and a weighted foam pad, and many printers start that way. What a commercial unit adds is even light across the whole screen, a vacuum or pressure system for consistent film contact, and an accurate timer — the things that make every screen burn the same. When a DIY box starts costing you remade screens, the Vastex E20 at $995.00 is the usual first upgrade.

Exposure Unit Parts & Accessories

Used Exposure Units, Packages & Financing

Shopping used? Browse pre-owned screen printing equipment on the Buckets of Ink used equipment marketplace or our used equipment page. Building a full screen room? Ask about the screen room package — exposure unit, drying cabinet, emulsion, scoop coater, film and screens quoted together. Great financing is available on new equipment, and we can help with setup and training.

See it before you buy: equipment is on display at our Tempe showroom, 906 S Priest Dr, Suite 101, Tempe, AZ 85281 (Mon–Fri 7:30 AM–4:00 PM). Call 480-229-7806 to book a demo, ask about setup and training, or talk through the right size for your shop.

Not sure which exposure unit fits your shop? Call 480-229-7806
Quote now · Ask about our discounts · Ask about packages · Let us help you get into your next machine · Great financing available
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Screen Printing Exposure Unit FAQ

What is an exposure unit in screen printing?

An exposure unit is a UV light box that hardens photo emulsion on a screen everywhere except under the black areas of your film positive. The soft areas wash out and become the stencil that ink prints through.

What is the best exposure unit for screen printing?

For most shops an LED unit with a vacuum lid sized to your largest frame is the best choice. At Buckets of Ink that is the Vastex E200-2128 or E200-2331 for standard screens, the E2000 series for 25" x 36" screens, and the Vastex E20 for a budget tabletop start.

How much does a screen printing exposure unit cost?

At bucketsofink.com the Vastex E20 tabletop LED unit is $995.00, the E200-2128 is $2,590.00, the Chromaline Quick Image LED 26" x 31" is $2,625.00, the E200-2331 High Output is $3,175.00, and the E2000 E2-2536 and E2-5236 are $5,260.00 and $8,220.00. Freight is quoted separately.

Do I need a vacuum exposure unit?

Vacuum gives the tightest film-to-screen contact, which matters for fine lines and halftones. For bold spot-color art a pressure-plate unit like the Vastex E20 works well.

How long do you expose a screen with an LED exposure unit?

It depends on the emulsion, mesh, coating thickness and the unit, so run an exposure step test (for example the Chromaline 10-Step Exposure Guide) and use the time that holds the finest detail while fully hardening the emulsion.

How do you build an exposure unit for screen printing?

A DIY unit needs an even UV or LED light source, glass, a way to press film tight to the screen and a timer. It works for hobby use; commercial units add even light, vacuum contact and accurate timing for repeatable screens.

Where can I see an exposure unit in person in Arizona?

Visit Buckets of Ink at 906 S Priest Dr, Suite 101, Tempe, AZ 85281, Monday to Friday 7:30 AM to 4:00 PM, or call 480-229-7806 to set up a demo.

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