Tattoo in Japanese Calligraphy

入墨 (irezumi)

Wikipedia has a good article at Irezumi.

Tattoo Block Horizontal

Tattoo Cursive Horizontal

Tattoo Semi-Cursive Horizontal

Tattoo Block Vertical

Tattoo Cursive Vertical

Tattoo Design Vertical

Tattoo Semi-Cursive Vertical

刺青 (shisei)

Tattoo has a few words in Japanese. After the Edo period, when done for personal expression it was called shisei. The samurai class, and later yakuza, adopted the word sumiire. This kanji can actually be read either way. Wikipedia has a good article at Irezumi.