Parts of Fingerprint Pattern Type Lines Two innermost

Parts of Fingerprint Pattern

Type Lines Two innermost ridges Frequently broken, may not be continuous Run parallel or side by side At a certain point diverge or separate One running opposite the other or tending to engulf the pattern area

Divergence Point or Area Spreading apart of two lines which have been running parallel or nearly parallel

Pattern Area Part of loop or whorl patters Bounded by type lines Characteristics necessary for classification and identification are located

Ridges Tiny elevation or hill-like structures Found on epidermis of skin Containing sweat pores Appear as black lines with tiny white dots in an inked fingerprint patterns

Furrows Depressions or canals/ groves Found between ridges Appear as white lines in an inked fingerprint impression

Pores Opening located on the ridge surface

Focal Points Outer (delta) and innermost terminus (core) Enclosed within pattern area of loops and whorls

Delta Outer focal point or terminus Found on the center or approximately center of the divergence point of the type lines Or a point in a first recurving ridge located nearest to the center and in front of the divergence of the type lines

Types of Delta Open Delta Displays any ridge formation EXCEPT bifurcating ridge Located mid-way where the type lines separate and not joint to any of the neighboring ridges Closed Delta A bifurcating ridge that obstruct or blocks the space or opening where the type lines separate

Core Inner terminus or focal point Found inside on the center or approximate center of the pattern area

Types of Core Bar or Rod Core Point located at the tip of the ending ridge Rising high or above the shoulders of the innermost recurving ridge Staple Core Point located on the shoulder of the innermost looping or recurving ridge Farther from the delta Fragmentary Core Very short ridge or dot ridge Located on or above the shoulder lines of the innermost recurving or looping ridge