Printing paper feed releasing device for printers

Claim 1

A printing paper feed release device for a printer, comprising: printing paper to be printed on; a pressure roller engageable with said printing paper to support said printing paper thereon; a paper feed release lever means, rotatably supporting said pressure roller thereon, for selectively disengaging said pressure roller from said printing paper; a lock release lever, engageable with said paper feed release lever means, for locking said paper feed release lever means in a position wherein said pressure roller is disengaged from said printing paper; a supporting shaft, engageable with said lock release lever, means for reciprocating said supporting shaft in its axial direction, said supporting shaft engaging and pivoting said lock release lever to automatically unlock said paper feed release lever means through said lock release lever when said printer is operated; first spring means, connected to said lock release lever, for urging said lock release lever into engagement with said supporting shaft; and second spring means, connected to said paper feed release lever means, for urging said paper feed release lever means to make said pressure roller engage with said printing paper; wherein said lock release lever is rotated against said urging of said first spring means by movement of said supporting shaft to unlock said paper feed release lever means, and said paper feed release lever means is rotated by said urging of said second spring to move said lock release lever in a direction away from said supporting shaft.