Print Bar Assembly
Original Publication Date: 1959-Dec-01
Included in the Prior Art Database: 2005-Mar-08
AbstractA method of making and assembling print bars includes the step of molding a member 1 comprising groups of print bars 2 arranged in their desired order and with the desired spacing as illustrated in the lefthand figure.
Print Bar Assembly
A method of making and assembling print bars includes the step of molding a member 1 comprising groups of print bars 2 arranged in their desired order and with the desired spacing as illustrated in the lefthand figure.
The print bars are molded with a surplus connecting strip 3 which is later removed along the line 4. A second molded member 5 for supporting the print bars 2 is illustrated in the middle figure and carries studs 6 for spacing and guiding the print bars.
A third member 7 is molded of resilient material and comprises resilient fingers 8 on a common connecting member. The print bar group is inserted in the support member 5 with the studs 6 between the individual print bars 2. The member 7 is inserted into the assembled parts 1 and 5 (righthand figure) and is bounded on the left by the studs 6 and the surfaces 9 on the print bars; at the bottom by the surface 10 of the support member 5; at the top by the surface 11 of the support member; and on the right by the free end of each resilient finger 8 bearing on a surface. 12 of a print bar. A flat closure member (not shown) is then placed over the members 1 and 7 and is fixed to the member 5 at points 13, 14 and 15. The surplus connecting strip 3 is then severed from the individual print bars along the line 4.
Printing is effected by impact of a print hammer against the righthand end of a print bar which drives the bar to the left against a printing surface. Displacement of the print bar...