Detachable wire matrix print head mounting structure

Claim 1

Mounting structure for securely removably holding a matrix print head with its planar printing face opposite a parallel printing plane comprising a support structure having a profile defined by a first planar surface parallel to said printing face and intersecting planar surfaces at right angles to said first planar surface, said matrix print head having a profile complementary to the profile of said support structure whereby said matrix print head is supported against movement in the direction of said parallel printing plane by engagement with said first planar surface of said support structure and against lateral movement by said intersecting planar surfaces of said support structure, anchor studs extending outwardly from said support means, said matrix print head having an abutment located at a distance from said planar printing face greater than the distance of said anchor studs from said planar printing face, and a spring having its ends secured to said anchor studs and resiliently embracing said matrix print head to urge said matrix print head into mating engagement with said intersecting planar surfaces of said support structure, and said spring acting against said abutment on said matrix print head to urge said matrix print head toward said first planar surface on said support structure.