by
Jocelyn Bravo Quevedo
| Dec 10, 2025
When most people think about ID card printing, they focus on the big details — crisp photos, bold colors, and how fast a card comes out of the printer. But there’s one small factor that plays a surprisingly important role in print quality and printer performance: card thickness.
Whether you’re producing employee badges, membership cards, or secure access credentials, the thickness of the cards you use can influence print results, card durability, and the long-term reliability of your printer.
Why Card Thickness Matters
Card thickness is measured in mils (1 mil = 0.001 inches). The standard thickness for most ID cards is 30 mil — the same as a typical credit card.
Here’s a quick overview of common thickness options and where they’re typically used:
- 10–15 mil: Temporary badges, event passes, and promotional key tags
- 20 mil: Light-use cards such as library or membership IDs
- 30 mil: Standard employee badges, student IDs, photo IDs, and most access credentials
- 40–60 mil: Heavy-duty, multi-layer, or technology cards with embedded components
How Card Thickness Affects Printer Performance
Every ID card printer is built to support a specific thickness range. Using cards outside that range can lead to printing issues or even physical damage to the printer. Here’s why thickness makes such a difference:
Card Feeding Mechanisms- Printers rely on rollers to guide the card through the print path. When a card is too thin or too thick, the rollers may not grip it correctly, causing misfeeds, jams, or errors.
Ribbon and Printhead Contact- For sharp, consistent printing, the ribbon must maintain even contact with the card surface. Incorrect thickness can cause poor image transfer, patchy colors, or fuzzy text.
Lamination Requirements- If you laminate cards, keep in mind that thicker cards may need special lamination settings or printer modules. Not all printers can laminate higher-thickness credentials effectively.
Technology Card Considerations- Smart cards and proximity cards can be slightly thicker due to embedded chips or antennas. Confirm that your printer supports these formats before printing.
How to Choose the Right Printer for Your Card Thickness
Before investing in a printer, ask yourself:
- What types of cards will you be printing? Temporary passes? Standard IDs? Thick access control cards?
- Do you need flexibility? If you’ll be printing multiple card types, look for a printer with adjustable thickness settings.
- Will your cards be pre-punched or embossed? These features can add slight thickness variations your printer must handle.
- Are you using technology cards? Make sure your printer supports their specific dimensions and construction.
Matching Your Printer to Your Card Stock
When evaluating printer specifications, review the supported card thickness range. Many models accommodate 20–40 mil cards, while higher-end printers are built for specialty and extra-thick credentials. Look for features such as:
- Adjustable card thickness settings
- Reliable printing on thicker or multi-layer cards
- Optional lamination or encoding modules
- Both manual and automatic card feeding options
Contact us today
Card thickness may seem like a small detail, but it plays a major role in print quality and printer performance. Choosing a printer designed for your card stock helps ensure smooth operation, consistent results, and long-lasting reliability.
Whether you’re printing standard 30-mil photo IDs or rugged, technology-enhanced credentials, pairing the right printer with the right card type is essential for a successful card program.
If you’re unsure which printer works best with your card materials, IdentiSys is here to help. Contact us today, and our team will guide you to the best solution — ensuring every card you print looks professional and performs flawlessly.