Print Lines vs Scratches: How to Tell the Difference on Trading Cards

The Surface Defect Dilemma

You are inspecting a card under angled lighting and you spot it - a faint line running across the surface. Your stomach drops. But before you relegate the card to the "do not submit" pile, you need to determine what that line actually is. Not all surface lines are created equal, and the distinction between a print line and a scratch can be the difference between a PSA 10 and a PSA 8.

Print lines and scratches are the two most common surface defects on trading cards, and they are frequently confused. They can look identical under casual inspection but have completely different origins, different physical characteristics, and - critically - different impacts on grading.

What Are Print Lines?

Print lines are factory defects created during the printing process. They occur when the printing rollers - the cylindrical drums that transfer ink to the card stock - have microscopic debris, imperfections, or uneven pressure. As the card stock passes through the rollers, these imperfections leave faint linear marks on the surface.

Characteristics of Print Lines

Direction: Print lines run in one consistent direction across the card - typically horizontal or vertical - aligned with the roller orientation. All cards from the same print sheet position will have print lines running in the same direction.

Consistency: A print line runs from edge to edge (or very nearly). It does not start and stop randomly in the middle of the card. It crosses the entire printed surface because the roller contacts the full width or length of the sheet.

Depth: Print lines are extremely shallow. They are surface-level imperfections in the ink layer, not physical deformations of the card stock. You cannot feel a print line with your fingernail. If you can feel it, it is not a print line.

Visibility: Print lines are typically visible only at specific angles. They appear and disappear as you rotate the card under directional lighting. At most viewing angles, the card looks perfectly clean. Under raking light (light hitting the surface at a very shallow angle), print lines become visible as faint, consistent lines.

Multiplicity: Where there is one print line, there are often several. Because they come from the roller, the same roller defect creates lines at regular intervals across the sheet. You might see two or three parallel lines spaced evenly apart.

Print lines are most commonly discussed on Pokemon holographic cards, Japanese Pokemon cards (certain facilities produce more prominent lines), chrome/refractor sports cards, and Magic: The Gathering foils.

What Are Scratches?

Scratches are handling damage - physical marks caused by contact between the card's surface and another object after the card left the factory. They result from sliding across surfaces, contact with other cards, insertion into and removal from sleeves, or any abrasive interaction.

Characteristics of Scratches

Direction: Scratches run in random directions. A card with handling scratches typically shows lines going multiple ways - diagonal, horizontal, curved - depending on the motion that caused them.

Length: Scratches vary in length from tiny nicks to lines spanning the full card surface. They start and stop at arbitrary points. A scratch might be 2mm long or 50mm long. Unlike print lines, they do not maintain consistent edge-to-edge paths.

Depth: Scratches range from surface-level (barely perceptible marks in the coating) to deep grooves that physically indent the card stock. Deeper scratches can be felt with a fingernail dragged perpendicular to the scratch direction.

Pattern: Handling scratches often cluster in specific areas - typically the center of the card where fingers contact during handling, or near the edges where the card slides against sleeve openings and top loader edges.

Curvature: Scratches can be straight or curved. Curved scratches are a strong indicator of handling damage - a finger or object moving in an arc across the surface. Print lines are always straight because rollers produce straight lines.

How to Tell Them Apart

The Direction Test

Hold the card at a shallow angle under a single directional light source. Rotate the card slowly 360 degrees. Count how many different directions the lines run.

• One direction (or a parallel set): Almost certainly print lines.
• Multiple directions: Almost certainly scratches.
• Mix of both: The card has both print lines and scratches. Examine each line individually.

The Edge-to-Edge Test

Trace each line from one end to the other.

• Runs edge to edge in a straight path: Print line.
• Starts and stops mid-card or curves: Scratch.

The Feel Test

Run a clean fingernail gently perpendicular across the suspected line.

• Cannot feel anything: Could be either a very fine scratch or a print line. Move to other tests.
• Slight catch or ridge: Scratch. Print lines do not create tactile ridges.

The Multiple Card Test

If you have other cards from the same set and print run, examine them in the same area. Print lines come from the printing process and affect multiple cards from the same sheet position. If three cards from the same set all show a line in a similar position running the same direction, that is almost certainly a print defect rather than handling damage.

The Magnification Test

Under 10x magnification, the character of the mark changes:

• Print lines appear as a subtle variation in the ink or coating - a slightly raised or depressed line with smooth, consistent edges. The ink itself may appear slightly different in texture or density along the line.
• Scratches appear as a channel or groove with rough, irregular edges. Under high magnification, you can see where surface material has been displaced or removed. The edges of a scratch are ragged compared to the smooth edges of a print line.

How Grading Companies Treat Each Defect

Print Lines

Grading companies treat print lines as a gray area. PSA has been relatively lenient - cards with faint print lines visible only at extreme angles have received PSA 10 grades. Prominent print lines visible under normal handling typically cap a card at PSA 9 or lower. BGS tends to be slightly stricter, dropping the surface subgrade from 10 to 9.5 for light print lines. CGC treats them similarly to PSA.

The key takeaway: light print lines are not an automatic death sentence. If the line is invisible during normal handling and viewing, it may still pass.

Scratches

Scratches are treated more severely than print lines across all grading companies because they represent post-production damage rather than a factory characteristic.

Even light handling scratches - the kind only visible at extreme angles - typically prevent a PSA 10 or BGS surface subgrade of 10. Cards with visible scratches under normal examination conditions drop quickly into PSA 8-9 territory depending on severity.

Deep scratches that create visible channels or remove surface material are major defects that can drop a grade to PSA 6-7 or lower.

Prevention

Preventing Scratches

Scratches are entirely preventable: sleeve cards immediately from the pack, never slide a card across any surface, use clean sleeves, handle by edges only, and store vertically to prevent surface-to-surface friction.

Managing Print Lines

You cannot prevent print lines - they exist before you open the pack. Identify them early during sorting, factor them into submission decisions, and when buying raw cards for grading, request photos under angled lighting to check before purchasing.

The Bottom Line for Submitters

When you find a line on a card you are considering for submission:

1. Determine whether it is a print line or scratch using the tests above.
2. If it is a scratch, assess severity. Visible during normal handling? The card will not grade PSA 10.
3. If it is a print line, assess visibility. Only visible at extreme raking angles? It may still pass. Visible during normal handling? Expect a deduction.
4. Consider the card's value. For a card worth $500 in PSA 10, even a PSA 9 result may justify submission. For a card worth $30 in PSA 10, a likely PSA 9 means the math does not work.

ZeroPop's surface analysis detects both print lines and scratches during scanning, flagging surface defects that could affect your grade before you commit to a submission.