초록 ▼

A gear drive system for a printer designed to print upon a continuous roll of paper and having a blade used to cut off printed portions of paper from the paper roll is implemented. The gear drive system consists of a drive shaft 330, a slip clutch 401, a clutch gear 116, a fixed gear 110, and a stag

A gear drive system for a printer designed to print upon a continuous roll of paper and having a blade used to cut off printed portions of paper from the paper roll is implemented. The gear drive system consists of a drive shaft 330, a slip clutch 401, a clutch gear 116, a fixed gear 110, and a staggered gear 112 which controls the paper cutter blade 106. During printing, clutch 401 allows the drive shaft 330 shaft to slip relative to the clutch gear 116. When printing stops, clutch 401 locks clutch gear 116 which is engaged with the first portion of staggered gear 112 and causes staggered gear 112 to rotate until the second portion of staggered gear 112 engages the fixed gear 110. Staggered gear 112 is then driven by the fixed gear 110. A cutter blade is controlled by staggered gear 112, with the blade cutting off the paper as the fixed gear 110 is in reverse rotation. After the paper is cut, fixed gear 110 resumes its forward rotation, rotating staggered gear 112 and consequently, rotating cutter blade 106 away from the paper. After the blade has been rotated, staggered gear 110 continues to turn, until the fixed gear disengages with the second portion of the staggered gear. Full torque is applied to both cutting and opening rotations of the cutter blade.

대표청구항 ▼

[ What is claimed is:] [1.] A gear apparatus comprising:a first portion having a first peripheral surface capable of being driven about a rotational axis by a first drive gear; anda second portion having a second peripheral surface capable of being driven about said rotational axis by a second drive

[ What is claimed is:] [1.] A gear apparatus comprising:a first portion having a first peripheral surface capable of being driven about a rotational axis by a first drive gear; anda second portion having a second peripheral surface capable of being driven about said rotational axis by a second drive gear, said second portion is secured to said first portion such that said first portion is contiguous with said second portion and said first portion is staggered along said rotational axis with respect to said second portion such that each peripheral surface are independently driveable, wherein a first section of said first portion has a plurality of starter gear teeth of increasing height with a tallest tooth adjacent to a second section of said first portion and a first section of said second portion has a plurality of starter gear teeth of increasing height with a tallest tooth adjacent to a second section of said second portion.