| 摘要 |
A printing media position sensing device provides sheet medium position status information for synchronizing media transfer operations in a hard copy machine (407) using a sheet feeder system. When a sheet is picked and transferred from a stack (403) in a replaceable cartridge, refillable tray, or the like, to the input registration and feed mechanism (409, 412) of the hard copy machine (407), a detector (309) senses the further exit motion of the picked sheet, thus providing an indication that the input registration and feed mechanism (409, 412) has taken control of the sheet. A signal indicative of this condition is used to release the sheet pick and transfer mechanism (405, 411, 413) associated with the stack (403) so that the sheet is free to leave the stack (403) uninhibited. The exit sensor automatically resets for the next cycle. <IMAGE> |
