Keyblock Impression

A keyblock impression (sumizuri) is a proof pulled from the principal block carrying the design's outlines before any color blocks are introduced. Within the shin-hanga production system at Watanabe Shozaburo's workshop, such proofs served as references for the carvers and printers preparing the color blocks and as records of the underlying design transferred from the artist's brushed hanshita-e. Preserved keyblock impressions document the carver's interpretation of the original drawing, showing how the engraver's blade resolved Shunsen's brush lines into woodblock-printable form. For an actor portrait, the keyblock alone carries the psychological weight of the face: the linework defining eye shape, mouth, and the boundaries of the kumadori, rendered without the support of color or bokashi gradation. As a technical artifact rather than a finished commercial print, a keyblock impression sits between artist and carver in the collaborative production sequence, before the printer and publisher complete the image, and gives later viewers a clear view of the structural drawing beneath the polychrome impressions ultimately distributed by the workshop.