Bidirectional Clutch Spring
Original Publication Date: 1987-Sep-01
Included in the Prior Art Database: 2005-Feb-01
An arrangement is described which prevents potential damage to an automatic sheet feed for a printer. Fig. 1 is a side perspective view of the sheet feed showing the arrangement. Figs. 2 and 3 show the operation. The sheet feed is an entirely mechanical, snap-on mechanism that will feed cut-sheet paper on demand. To accomplish this, a 180-degree reverse index of the platen is required to activate a sheet feed load cycle. After this is complete, the printer drives the platen in the forward direction which feeds a sheet of paper to the printer. This function is done automatically; however, it can also be done manually by depressing the reverse index button on the printer control panel.