Printer
AssigneeToshiba Tec Kabushiki Kaisha
InventorYosuke Nishimura
Life of this patent
Estimating the term…
Abstract
A printer includes a supply-side roll, a winding roller, a detector, a printing assembly, a conveying roller, and an adjuster. The supply-side roll is formed by winding an ink ribbon around a delivery roller. The winding roller winds the ink ribbon. The detector detects a change in tension of the ink ribbon. The printing assembly prints on a printing medium via the ink ribbon stretched between the supply-side roll and a collection-side roll formed by winding the ink ribbon. The conveying roller winds the ink ribbon and rotates in a direction in which the ink ribbon is wound by the winding roller. The adjuster adjusts, based on the change in the tension of the ink ribbon, a frictional force applied between the conveying roller and the ink ribbon and keeps constant tension of the ink ribbon passing through the printing assembly.
Claims13
A printer comprising:
- a supply-side roll formed by winding an ink ribbon around a delivery roller;
- a winding roller configured to wind the ink ribbon delivered from the supply-side roll;
- a detector configured to detect a change in tension of the ink ribbon wound by the winding roller;
- a printing assembly configured to print on a printing medium via the ink ribbon stretched between the supply-side roll and a collection-side roll formed by winding the ink ribbon with the winding roller;
- a conveying roller configured to wind the ink ribbon present between the collection-side roll and the printing assembly, and rotate in a direction in which the ink ribbon is wound by the winding roller;
- and
- an adjuster including a gear assembly, the adjuster configured to adjust, based on the change in the tension of the ink ribbon, a frictional force applied between the conveying roller and the ink ribbon and keep constant tension of the ink ribbon passing through the printing assembly.
A printer comprising:
- a supply-side roll formed by winding an ink ribbon around a delivery roller;
- a winding roller configured to wind the ink ribbon delivered from the supply-side roll;
- a detector configured to detect a change in tension of the ink ribbon wound by the winding roller;
- a printing assembly configured to print on a printing medium via the ink ribbon stretched between the supply-side roll and a collection-side roll formed by winding the ink ribbon with the winding roller;
- a conveying roller configured to wind the ink ribbon present between the collection-side roll and the printing assembly, and rotate in a direction in which the ink ribbon is wound by the winding roller;
- an adjuster configured to adjust, based on the change in the tension of the ink ribbon, a frictional force applied between the conveying roller and the ink ribbon and keep constant tension of the ink ribbon passing through the printing assembly;
- a first torque limiter for limiting torque for rotating the winding roller to a first torque;
- and
- a second torque limiter for limiting torque for rotating the conveying roller to a second torque.
A printer comprising:
- a supply-side roll configured to receive a roll of ink ribbon;
- a winding roller configured to receive the ink ribbon from the supply-side roll;
- a conveying assembly configured to convey a printing medium;
- a printing assembly configured to receive the printing medium and the ink ribbon;
- and
- an adjuster including:
- a motor;
- a rod positioned to engage the ink ribbon;
- a holder defining an aperture that receives the rod;
- and
- a gear assembly positioned between the motor and the holder;
- wherein the motor is configured to drive the gear assembly to reposition the holder and, thereby, reposition the rod to adjust a tension of the ink ribbon.
Dependencies are inferred from the claim text.