Front to back adjustment for carriage assembly

Claim 1

Apparatus for adjusting the relative position of a print mechanism to a platen on a printer frame comprising: a. first and second parallel supports mounted to a printer frame in spaced apart relationship parallel to said platen, b. a pulley support assembly mounted on one of said supports for movement parallel to said supports, c. a bearing assembly slidably mounted on the other of said supports, d. a carriage assembly for carrying a print mechanism thereon, said carriage assembly being mounted to said pulley support assembly and slidably attached to said bearing assembly to allow movement of said print mechanism towards or away from said bearing assembly while maintaining contact with said bearing, e. an elongated cylindrical shaft extending from one side of said frame to the other and forming said one support, f. means for releasably fastening each end of said shaft to said frame, g. a horizontal slot in said frame for receiving each end of said shaft, h. a threaded orifice in each end of said shaft, i. a bolt passing through each slot for mating with each threaded orifice whereby tightening said bolts fastens each end of said shaft to said frame in a corresponding slot, j. a bolt extending horizontally through said shaft in a direction perpendicular to said shaft's longitudinal axis, k. an orifice in said frame for receiving said horizontal shaft bolt, l. a first nut on said horizontal shaft bolt for locking said bolt to said shaft, and m. a second nut on said horizontal shaft bolt for locking said bolt to said frame whereby loosening of said first and second nuts allows said horizontal shaft bolt to be turned thereby moving said shaft in said horizontal slot in a horizontal plane to move said print mechanism toward or away from said platen.