Constant pressure mechanism for hand labeler
AssigneeKabushiki Kaisha Sato Kenkyusho
InventorYo Sato
Life of this patent
Estimating the term…
Abstract
A constant pressure mechanism for a hand operated labeler to print the labels that are in a label strip clearly and precisely with a constant printing pressure applied to the labels irrespective of the strength and speed of the squeezing and releasing of the operator's hand lever; the mechanism comprises: a printing device fixed to the machine frame; a platen assembly supporting the label strip in opposition to said printing device; means operatively connecting the platen assembly and said hand lever, and banging the platen assembly against the type face of the printing device with a predetermined spring force and then retracting the platen assembly to its original position.
Claims31
A hand labeler comprising:
- a frame;
- a printing device fixedly mounted on said frame;
- a platen assembly for carrying a label strip, and supported in said frame and positioned such that a label on said platen assembly confronts said printing device;
- a hand lever for being operated to move said platen assembly;
- platen assembly operating means for operatively connecting said hand lever and said platen assembly and for rapidly moving said platen assembly against said printing device with the label on said platen assembly;
- biasing means connected with said platen assembly operating means for causing said platen assembly operating means to rapidly move said platen assembly with a constant printing pressure against said printing device;
- said biasing means being connected with said hand lever for being charged by movement of said hand lever and for thereafter being released to discharge and cause said platen assembly operating means to move said platen assembly following further movement of said hand lever;
- means for retracting said platen assembly from said printing device;
- disconnect means for disconnecting said biasing means from said platen assembly operating means prior to said retracting means retracting said platen assembly.
A hand labeler comprising:
- a platen:
- means for feeding labels to be printed onto said platen;
- a print head having a print surface facing toward said platen;
- a constant printing pressure mechanism for moving said platen to contact a label on said platen against said print surface;
- said constant printing pressure mechanism comprising:
- a platen lifting lever;
- said platen being secured to said lifting lever;
- said platen lifting lever being shiftable to shift said platen toward and away from said print surface;
- first engagement means on said platen lifting lever which, when they are engaged, enables said platen lifting lever to shift said platen toward said print surface;
- second engagement means movable toward and away from said first engagement means and engageable with said first engagement means;
- biasing means connected with said second engagement means for biasing said second engagement means to move said platen lifting lever to shift said platen to said print surface when said second engagement means and said first engagement means are engaged;
- whereby printing by said print surface on said labeler is caused by said second engagement means biasing means moving said platen toward said print surface;
- an actuating lever movable between a gripped and a released position;
- a lifting member operatively connected to said actuating lever to be moved thereby as said actuating lever is moved toward said gripped position;
- said lifting member being separably connected to said second engagement means for moving said second engagement means toward said first engagement means as said actuating lever moves to said gripped position;
- lifting member release means in said labeler and positioned to be engaged by said lifting member about when said first engagement means and said second engagement means have been engaged, for the purpose of separating said lifting member from said second engagement means, thereby permitting said second engagement means to be biased by said biasing means to raise said platen to said print surface.
Dependencies are inferred from the claim text.