Understanding GSM and Weight Requirements
The most fundamental decision you will make is selecting the correct weight, typically measured in Grams per Square Meter (GSM). For inkjet printing, weight translates directly to the 'stiffness' of the final product. If you are printing simple greeting cards, a mid-range weight of 170 to 215 GSM is usually sufficient. However, if you are aiming for high-end business cards or heavy-duty menu printing, you should look for premium stocks ranging from 250 to 300 GSM or higher. It is vital to check your printer's manual before purchasing ultra-heavy stock. Many consumer-grade inkjet printers have a maximum weight threshold. If the paper is too thick, the rollers will struggle to pull the sheet through, leading to mechanical errors or uneven ink distribution.
Surface Texture and Ink Absorption
Inkjet technology works by spraying microscopic droplets of liquid ink onto a surface. Because the ink is liquid, the surface texture of the card stock determines how those droplets settle. There are three primary finishes to consider: Matte, Gloss, and Satin. Matte card stock is excellent for a sophisticated, non-reflective look and is ideal for text-heavy designs or artistic photography where you want to avoid glare. Glossy stock, on the other hand, utilizes a specialized coating that keeps the ink on the surface, resulting in vibrant, high-contrast colors and sharp photographic detail. Satin or 'Luster' finishes offer a middle ground, providing a slight sheen without the intense reflectivity of high gloss. When selecting a stock, ensure it is specifically labeled as 'inkjet compatible,' which implies it has a micro-porous coating designed to absorb liquid without causing the ink to feather or bleed into the fibers.
Brightness and Color Accuracy
The 'brightness' rating of card stock refers to how much light the paper reflects. This is a crucial factor for color accuracy. A high brightness rating (typically 96 or above) ensures that whites look crisp and that colors pop against the background. If you choose a lower brightness stock, your colors may appear muted or slightly yellowed, which can ruin the intended aesthetic of a professional design. For projects involving high-resolution imagery or brand-specific color palettes, always opt for high-brightness, bright-white card stock to ensure the digital colors on your screen translate accurately to the physical page.
Opacity and Double-Sided Printing
If your project requires printing on both sides of the card, opacity becomes a non-negotiable factor. Low-opacity card stock allows light to pass through, meaning the design on the front will 'ghost' through to the back, creating a messy, unprofessional appearance. When shopping, look for descriptions that mention high opacity or 'heavyweight' density. This ensures that your designs remain distinct on both sides, providing a clean, professional finish that feels substantial in the hand.
