Abstract: A hand operated imprinter for imprinting using a credit card, onto a document, comprising a base member having a panel forming a document supporting surface, a reciprocative roller carrier member transversely spanning the base member and movable longitudinally over the document supporting panel of, the carrier member having opposite side portions flanking opposite sides of the base member, the roller engaging a document when positioned on the panel overlying the base member having tracks at opposite sides of the base member longitudinally spanning the length of the base member for movably supporting and guiding the carrier member the track having a first horizontal track surface paralleling the panel and an inclined downwardly and outwardly facing second track surface having outwardly diverging upper and lower side faces, the portion of said base member at each side thereof lying between said first and second track surfaces defining a truncated triangular rib formation, and said carrier member having a pair o