Tool for Trimming All Printhead Coil Pins Simultaneously
Original Publication Date: 1987-Nov-01
Included in the Prior Art Database: 2005-Feb-02
A printhead contains a number of coils each with two connector pins which must be trimmed off prior to the soldering operation. The trimming is usually done, either manually or automatically, with a tool capable of trimming only one pin at a time. The present embodiment provides a tool for trimming all printhead coil pins simultaneously. Fig. 1 shows a typical print coil 1 with two leads 2. Fig. 2 shows a typical printhead 3, with multiple coils 1 in place in preparation for soldering. The excess lengths of coil pins 2 extend through PC board 4, to which the pins are to be soldered. There are two tooling holes 5 in both the upper plate and PC board 4. (Image Omitted) The printhead is now placed in the trimming tool as shown in Fig. 3. (The printhead is held in place by a spring-loaded arm which is not shown.