Patent ID: 8020964

Claim:
A liquid drop ejecting device comprising: a first head unit row comprising a plurality of head units arranged along a particular direction, each head unit in the first head unit row comprises a first overlapping portion; and a second head unit row comprising a plurality of head units arranged along the particular direction, each head unit in the second head unit row comprises a second overlapping portion, the first head unit row is adjacent to the second head unit row; wherein the first row head units are arranged in a staggered configuration relative to the second row head units, the first overlapping portion of each first row head unit overlaps the second overlapping portion of the adjacent second row head unit along the particular direction, and wherein each of the head units comprises: a particular flow path structure comprising a liquid path including a plurality of nozzles that are equidistantly arranged along the particular direction; and a reinforcement member coupled to the particular flow path structure and substantially parallel to a liquid drop ejecting surface to which the plurality of nozzles are opened, the reinforcement member comprises: a projecting portion extending in a further direction perpendicular to the particular direction, the projecting portion forming a larger-width portion of a first width, the larger-width portion including a first end face extending along the particular direction; and at least one smaller-width portion of a second width adjacent to the larger-width portion along the particular direction, the at least one smaller-width portion including a second end face, and wherein the first width is greater than the second width along the further direction, and wherein the first overlapping portions comprise the projecting portions of the plurality of first row head units; and wherein each of the plurality of first row head units is arranged, such that a portion of the second end face of the first row head unit is positioned closer to the first end face and the second end face of the adjacent second row head unit than the corresponding first end face of the first row head unit.