Abstract: An ink cartridge has a flexible ink bag accommodated in a casing. A plate fixed to the ink bag moves together with deflation of the ink bag as the ink is consumed. A pin attached to the plate slides in a groove formed in a lever pivotally connected to the casing. A reflecting plate inside the casing reflects detection light projected from the outside through an opening in the casing to indicate that ink remains in the ink bag. As the ink nears complete consumption, the lever pivots to a position blocking the detection light from the reflecting plate thereby indicating that the ink has been used up.

Abstract: To provide an ink supplying system for an ink jet printer with which ink supply work in starting to use the ink jet printer is easy and that can be reduced in size.

Abstract: A communication method enabling communication on a predetermined mobile communication network and communication on a predetermined wireless communication network different from the predetermined mobile communication network, includes the step of: switching, means for carrying out predetermined data transfer while maintaining a communication channel on the predetermined mobile communication network, between communication on the predetermined mobile communication network and communication on the predetermined wireless communication network, or activating or deactivating a part concerning the predetermined wireless communication included in a mobile terminal.

Abstract: An access network selection method in a communications network having access networks is disclosed that includes notifying devices in calling-side and called-side networks of the identifiers of currently available access networks and user preferences; making a list of candidates for an access network to be assigned to the called-side terminal, and transmitting the list to the device in the calling-side network; determining an access network to be assigned to the calling-side terminal in response to reception of the list, and notifying the calling-side terminal of the determined access network; notifying the device in the called-side network of the type of the access network assigned to the calling-side terminal; and determining the access network to be assigned to the called-side terminal in response to reception of the signal of the type of the access network assigned to the calling-side terminal, and notifying the called-side terminal of the determined access network.

Abstract: A communication method enabling communication on a predetermined mobile communication network and communication on a predetermined wireless communication network different from the predetermined mobile communication network, includes the step of: switching, means for carrying out predetermined data transfer while maintaining a communication channel on the predetermined mobile communication network, between communication on the predetermined mobile communication network and communication on the predetermined wireless communication network, or activating or deactivating a part concerning the predetermined wireless communication included in a mobile terminal.

Abstract: A communication method enabling communication on a predetermined mobile communication network and communication on a predetermined wireless communication network different from the predetermined mobile communication network, includes the step of: switching, means for carrying out predetermined data transfer while maintaining a communication channel on the predetermined mobile communication network, between communication on the predetermined mobile communication network and communication on the predetermined wireless communication network, or activating or deactivating a part concerning the predetermined wireless communication included in a mobile terminal.

Abstract: Provided is an ink cartridge, including: a flexible ink bag; a casing accommodating the ink bag; a plate, which is fixed to a surface of the ink bag and is capable of moving together with the ink bag, and has a pin protruding toward a side surface of the casing; a reflecting plate, for reflecting a detection light entered from an outside of the casing; a lever portion, having a base end side being rotatably attached to the side surface so that the lever portion slides on the side surface of the casing; a guide groove having a long hole shape, which is formed from a tip side toward the base end side of the lever portion in a size allowing insertion of a tip of the pin, and by which the pin is guided when the plate moves, in which the lever portion rotates as the plate moves due to the insertion of the pin into the guide groove, and causes, when the ink is used up, a nonreflecting plate to be positioned between the side surface of the casing and the reflecting plate so that the reflection of the detection light

Abstract: A mobile communication system for transmitting broadcast data or multicast data includes a plurality of base stations forming a multicast or broadcast zone, the plurality of base stations transmitting a same multicast or broadcast data. Each of the plurality of base stations includes a first controller for determining a base station among a plurality of base stations; and a second controller for performing the transmission of the broadcast data or multicast data in accordance with the determined result.

Abstract: A mobile communication method for transmitting broadcast data or multicast data from a base station forming a multicast or broadcast zone in a mobile communication system by determining a base station among a plurality of base stations and performing the transmission of the broadcast data or the multicast data from a plurality of base stations in accordance with the determined result.

Abstract: A method of transmitting broadcast data or multicast data in a mobile communication system includes forming a multicast or broadcast zone by selecting a plurality of base stations, the plurality of base stations transmitting a same multicast or broadcast data, and at each of the plurality of base stations determining whether the broadcast data or multicast data is transmitted from a plurality of base stations and performing the transmission of the broadcast data or the multicast data in accordance with the determined result.

Abstract: A mobile communication system for transmitting broadcast data or multicast data from a base station forming a multicast or broadcast zone includes a first controller for determining a base station among a plurality of base stations and a second controller for performing the transmission of the broadcast data or the multicast data from the base station in accordance with the determined result.

Abstract: A method of transmitting a multicast or broadcast data from a plurality of base stations forming a multicast zone, which is included in a service area of a mobile communications system includes performing at a base station among a plurality of base stations a transmission of multicast or broadcast data based on a determined result.

Abstract: In a communication system that transmits broadcast data from a base station, a judgment standard for determining whether broadcast data is transmitted to each zone is held and the transmission and transmission stoppage of the broadcast data are controlled for each zone in accordance with the judgment standard. Furthermore, a judgment standard for determining the type of a wireless channel for transmitting the broadcast data to each zone is held, and the channel type for transmitting the broadcast data to each zone is determined in accordance with the judgment standard.

Abstract: A communication method enabling communication on a predetermined mobile communication network and communication on a predetermined wireless communication network different from the predetermined mobile communication network, includes the step of: switching, means for carrying out predetermined data transfer while maintaining a communication channel on the predetermined mobile communication network, between communication on the predetermined mobile communication network and communication on the predetermined wireless communication network, or activating or deactivating a part concerning the predetermined wireless communication included in a mobile terminal.