Abstract: A liquid container includes a communicating means capable of non-contact communication with an external sending and receiving portion; storing means for storing data; wherein the storing means includes a rewritable region from which the data is readable and in which the data is rewritable and a writing-prevented region in which the data is readable and in which the data is unwritable, wherein the communicating means includes a overwriting circuit for overwriting the data in and for reading the data from the rewritable region; a first antenna provided in the communicating means and connected with the overwriting circuit a reading circuit for reading the data from the overwriting non-permission region; and a second antenna provided in the communicating means and connected with the reading circuit, and wherein the overwriting circuit and the reading circuit are constituted by respective electric circuits which are independent from each other.

Abstract: In a combination weighing system, a connection is established by Internet between a combination weighing apparatus comprising a weighing machine control portion for setting an operating condition of a weighing machine and logging an operating state of the weighing machine; and a network connecting device for receiving setting information of the operating condition and transmitting log information of the operating state, and a server computer that includes a network connecting device and manages the setting information of the operating condition and the log information of the operating state. With this combination weighing system, it is possible to set the operating condition of the combination weighing apparatus without a need for a person in charge to go to a place where the combination weighing apparatus is installed and to stop an operation of the combination weighing apparatus.

Abstract: An ink jet recording cartridge mounted on a movable carriage comprises an ink jet recording head for recording by discharging ink from the discharge ports to a recording medium, and a housing for holding the ink jet recording head. For the housing of this cartridge, extrusions are arranged to abut upon the grooved portions arranged for the carriage, and the extrusions are made capable of adjusting the relative positions of the ink jet recording cartridge and the carriage. With the ink jet recording cartridge thus structured, it becomes possible to position the discharge ports of the recording head easily and exactly corresponding to the predetermined position in the carriage. Even if the precision varies when the recording head is installed on the housing of the cartridge, the extrusions are arranged to shift in accordance with such variation to serve the purpose.

Abstract: In a combination weighing system, a connection is established by Internet between a combination weighing apparatus comprising a weighing machine control portion for setting an operating condition of a weighing machine and logging an operating state of the weighing machine; and a network connecting device for receiving setting information of the operating condition and transmitting log information of the operating state, and a server computer that includes a network connecting device and manages the setting information of the operating condition and the log information of the operating state. With this combination weighing system, it is possible to set the operating condition of the combination weighing apparatus without a need for a person in charge to go to a place where the combination weighing apparatus is installed and to stop an operation of the combination weighing apparatus.

Abstract: A weighing machine constituted by a plurality of weighing units, and a weighing machine control portion for performing a centralized control of these weighing units are provided. The respective weighing units and the weighing machine are communicatively interconnected. The weighing machine control portion comprises a CPU, a main memory, a flash memory, a display such as a liquid crystal display, and a key input device such as a key board, and a communication device is connected to the weighing machine control portion. In replacement of the control program, the communication device is connected to Internet and a new control program is downloaded from the server computer to a temporary storage area of the flash memory. The new program is transferred to a control program area of the main memory and executed by the CPU. Thus, a combination weighing apparatus and a combination weighing system in which the control program is replaceable via the communication medium such as Internet are provided.

Abstract: There is disclosed an ink jet cartridge comprising an ink jet head including a plurality of arranged discharge ports for discharging ink, an element substrate provided with a plurality of energy generating elements for generating an energy to discharge the ink, and a base plate for supporting the element substrate; an ink tank holding member for holding an ink tank for containing the ink; and a head holding member for connecting the ink tank holding member to the ink jet head, and by holding the ink jet head by the ink tank holding member and the head holding member, the ink jet head is elastically supported in a head sandwiching direction, so that the positioning of the ink jet head can easily be performed with respect to the ink jet cartridge with a high precision, the high quality recording is possible, and the ink jet apparatus using this cartridge can be realized with a simple construction and at a low cost.

Abstract: A liquid jet recording head comprises a first substrate having a plurality of discharge energy generating devices formed thereon, and a second substrate having a discharge opening plate provided with a plurality of discharge openings for discharging ink, and recessed portions becoming ink flow paths conductively connected with said discharge openings, and a common liquid chamber for retaining ink to be supplied to each of said discharge openings, respectively. The ink flow paths and common liquid chamber are formed by joining the first substrate and second substrate with the discharge energy generating devices of the first substrate facing the recessed portions becoming ink flow paths of the second substrate, at the same time, the joint between the first substrate and second substrate being sealed by sealing compound, and fine grains inclusively residing on the joint between the first substrate and second substrate.