What are the two types of impressions that are recorded on a fingerprint card?

The two types of impressions recorded on a fingerprint card are referred to as rolled and plain. Rolled impressions involve rolling the finger from one side to the other to capture the entire fingerprint pattern, which provides a comprehensive view of the fingerprint's ridge details. This technique is essential because it allows for the recording of the characteristics of the fingerprint effectively.

Plain impressions, on the other hand, are made by pressing the finger flat against the card without rolling. This captures the overall shape and pattern without the added detail that comes from rolling. Both types are crucial for accurately documenting a person's fingerprints, as they serve different purposes in identification and comparison processes.

Understanding the distinct roles of rolled and plain impressions helps in forensic and identification practices, ensuring that fingerprints are thoroughly captured for analysis and potential matching during investigations.