Abstract: An arithmetic model generation system includes a tire information acquisition unit, a position information acquisition unit, a wear amount calculator, and an arithmetic model update unit. The tire information acquisition unit acquires tire data including a temperature and pressure of a tire. The position information acquisition unit acquires position data for a vehicle on which the tire is mounted. The wear amount calculator includes an arithmetic model that generates an estimated wear amount of at least one groove of the tire, the wear amount calculator calculating the estimated wear amount of at least one groove of the tire by using the arithmetic model by inputting the tire data and the position data. The arithmetic model update unit updates the arithmetic model based on a wear amount measured by a tire measurement device external to the vehicle and the estimated wear amount.

Abstract: An arithmetic model generation system includes a tire information acquisition unit, a position information acquisition unit, a wear amount calculator, and an arithmetic model update unit. The tire information acquisition unit acquires tire data including a temperature and pressure of a tire. The position information acquisition unit acquires position data for a vehicle on which the tire is mounted. The wear amount calculator includes an arithmetic model that generates an estimated wear amount of at least one groove of the tire, the wear amount calculator calculating the estimated wear amount of at least one groove of the tire by using the arithmetic model by inputting the tire data and the position data. The arithmetic model update unit updates the arithmetic model based on a wear amount measured by a tire measurement device external to the vehicle and the estimated wear amount.

Abstract: A tire maintenance management device includes a travel environment obtainer and a maintenance timing determiner. The travel environment obtainer obtains a travel environment of a vehicle. The maintenance timing determiner determines a maintenance timing of a tire of the vehicle based on the travel environment obtained by the travel environment obtainer.

Abstract: An ink cartridge includes an ink tank defining an ink chamber therein, in which the ink chamber is configured to store ink therein, and an adapter configured to be coupled to the ink tank. The adapter and the ink tank are separate members, and the adapter includes a main body, and an operation portion extending from the main body in a particular direction. When the adapter is coupled to the ink tank, the operation portion extends toward the ink tank and extends further in the particular direction than the ink tank.

Abstract: An ink cartridge includes an ink tank defining an ink chamber therein, in which the ink chamber is configured to store ink therein, and an adapter configured to be coupled to the ink tank. The adapter and the ink tank are separate members, and the adapter includes a main body having a main body opening formed therein. The main body opening is configured to receive at least a portion of the ink tank therein. The ink cartridge also includes at least one resilient member coupled to the adapter. When the adapter is coupled to the ink tank, the ink tank extends from a first face of the main body in a first direction, and the at least one resilient member extends from a second face of the main body in a second direction opposite the first direction.

Abstract: An ink cartridge includes an ink tank defining an ink chamber therein, in which the ink chamber is configured to store ink therein, and an adapter configured to be coupled to the ink tank. The adapter and the ink tank are separate members, and the adapter includes a main body, and an operation portion extending from the main body in a particular direction. When the adapter is coupled to the ink tank, the operation portion extends toward the ink tank and extends further in the particular direction than the ink tank.

Abstract: An ink cartridge includes an ink tank defining an ink chamber therein, in which the ink chamber is configured to store ink therein, and an adapter configured to be coupled to the ink tank. The adapter and the ink tank are separate members, and the adapter includes a main body having a main body opening formed therein. The main body opening is configured to receive at least a portion of the ink tank therein. The ink cartridge also includes at least one resilient member coupled to the adapter. When the adapter is coupled to the ink tank, the ink tank extends from a first face of the main body in a first direction, and the at least one resilient member extends from a second face of the main body in a second direction opposite the first direction.