Abstract: In a certification medium issue system, an issue process is executed to write each data in a storage unit of an ID card in a rewritable state. A confirmation process is executed to confirm the data written in the storage unit of the ID card subjected to the issue process. A correction process is executed to correct the data written in the storage unit of the ID card, in the case where an erroneous data is written in the storage unit of the ID card subjected to the issue process. An issue completion process is executed to change the data written in the storage unit of the ID card to a state that cannot be rewritten, in the case where a correct data is written in the storage unit of the ID card subjected to the issue process.

Abstract: The invention provides an inkjet recording apparatus and an inkjet recording method that can reduce unevenness in the concentration that may appear on a recorded image due to a higher recording duty or other recording conditions. A recording head has first and second nozzle arrays discharging ink droplets. The first nozzle array discharges a relatively small droplet. The second nozzle array discharges a relatively large droplet. When a recording duty of a main recording scan performed by the recording head is equal to or greater than a predetermined value, a control unit controls the first nozzle array to stop discharging the small droplet and instead controls an end nozzle of the second nozzle array to discharge the large droplet to at least part of a designated dot forming position corresponding to an end nozzle of the first nozzle array.

Abstract: In a liquid discharge detection method and apparatus which detect a liquid discharged from a liquid discharge head, an electrode is placed at a position where the liquid discharged from the liquid discharge head comes into contact with the electrode while being in contact with the head. When a liquid is discharged, and the head is connected to the electrode through the liquid, the circuit becomes a closed circuit. A voltage generated between the two ends of a resistor is obtained from a current flowing in the closed circuit. When this voltage becomes equal to or higher than a predetermined voltage, liquid discharge can be detected.

Abstract: The invention intends to maintain a constant ink discharge amount among the recording heads, even in case a total pulse width of pulse voltages applied to heat generating resistors. For this purpose, a rank table is prepared in such a manner, even in a situation where a total pulse width of the pulses applied to the heat generating resistor is 3 ?s or less whereby the ink discharge amount decreases with a decrease in the total pulse width, that a maximum reached temperature on the surface of the heat generating resistors at the application of a preheat pulse becomes higher with a decrease in the resistance of a rank resistor, and a pulse width P1 on the rank table is made longer thereby compensating a decrease in the ink discharge amount with a decrease in the total pulse width and maintaining a constant ink discharge amount.

Abstract: The present invention provides a method for manufacturing an ink jet recording head utilizing ink bubbling by heating of an exothermic resistor to thereby eject ink and a method manufacturing the same, including the steps of: preparing a substrate provided with the exothermic resistor; applying such first resin on the substrate as to provide a first mold shape for forming the nozzle channel and the movable member; forming the first mold shape using the first resin; applying, on the substrate, second resin over the first mold shape for forming the nozzle channel and the movable member; and removing the first mold shape. By this method, the movable member is formed in the nozzle channel between the ink inlet and the exothermic resistor to thereby provide a high-density, high-accuracy ink jet recording head which can improve a frequency response while maintaining proper discharge performance.

Abstract: Print data containing a specific print pattern and the number of paper sheets to be printed is input from an external interface. On the basis of the print pattern and the number of printing thereof to be printed, the temperature of an inkjet printhead is predicted by a program executed by a CPU. A drive signal for the inkjet printhead is set before the start of printing on the basis of the prediction result.

Abstract: In a liquid discharge detection method and apparatus which detect a liquid discharged from a liquid discharge head, an electrode is placed at a position where the liquid discharged from the liquid discharge head comes into contact with the electrode while being in contact with the head. When a liquid is discharged, and the head is connected to the electrode through the liquid, the circuit becomes a closed circuit. A voltage generated between the two ends of a resistor r is obtained from a current i flowing in the closed circuit. When this voltage becomes equal to or higher than a predetermined voltage, liquid discharge can be detected.

Abstract: A method of manufacturing a liquid discharge head having a liquid flow path, a discharge energy generating device in the liquid flow path, a discharge port communicating with the liquid flow path, and a movable member facing the discharge energy generating device. The movable member is formed by a photolithographic technique, and a right-angled part and an acute-angled part of an edge of the movable member are removed so as to make a surface of the edge of the movable member curved. The curved surface of the movable member serves to reduce concentration of the stress on the movable member that occurs due to displacement of the movable member resulting from pressure of a bubble generated to discharge ink. Removal of the right-angled and acute-angled parts may be performed by soaking the movable member in an etching solution after formation of the movable member.

Abstract: To provide a liquid discharge head, a liquid discharge apparatus, a valve protection method of the liquid discharge head, and a maintenance device.

Abstract: In this invention, a camera position display portion for displaying the position of a camera at which a to-be-photographed person looks at the time of photographing by the camera, a confirming process display portion for displaying “wait for photographing” to the to-be-photographed person, an end display portion for displaying “end of photographing” to the to-be-photographed person, and an exit display portion for displaying “traveling direction after the end of photographing” to the to-be-photographed person are provided and display of guidance as to the photographing state (the position at which the to-be-photographed person looks, waiting for photographing, end of photographing, traveling direction after the end of photographing) is made for the to-be-photographed person.

Abstract: In this invention, a camera position display portion for displaying the position of a camera at which a to-be-photographed person looks at the time of photographing by the camera, a confirming process display portion for displaying “wait for photographing” to the to-be-photographed person, an end display portion for displaying “end of photographing” to the to-be-photographed person, and an exit display portion for displaying “traveling direction after the end of photographing” to the to-be-photographed person are provided and display of guidance as to the photographing state (the position at which the to-be-photographed person looks, waiting for photographing, end of photographing, traveling direction after the end of photographing) is made for the to-be-photographed person.

Abstract: A liquid discharge head includes plural heat generating members, each linearly communicating with a discharge port, a liquid flow path communicating with each discharge port and having a bubble generating area in which a movable member is provided, a limiting portion opposed to the bubble generating area in the liquid flow path for limiting displacement of the movable member, and a circuit for receiving data of a predetermined number of bits for each heat generating member and generating drive pulses for each heat generating member based on the respective input data. Substantial contact between the displaced movable member and the limiting portion renders a portion of the liquid flow path including the bubble generating area a substantially closed space except for the discharge port. The number of drive pulses generated from the input data is larger than the predetermined number of bits for at least one set of the data.

Abstract: In this invention, a camera position display portion for displaying the position of a camera at which a to-be-photographed person looks at the time of photographing by the camera, a confirming process display portion for displaying “wait for photographing” to the to-be-photographed person, an end display portion for displaying “end of photographing” to the to-be-photographed person, and an exit display portion for displaying “traveling direction after the end of photographing” to the to-be-photographed person are provided and display of guidance as to the photographing state (the position at which the to-be-photographed person looks, waiting for photographing, end of photographing, traveling direction after the end of photographing) is made for the to-be-photographed person.

Abstract: The present invention provides a method for manufacturing an ink jet recording head utilizing ink bubbling by heating of an exothermic resistor to thereby eject ink and a method manufacturing the same, including the steps of: preparing a substrate provided with the exothermic resistor; applying such first resin on the substrate as to provide a first mold shape for forming the nozzle channel and the movable member; forming the first mold shape using the first resin; applying, on the substrate, second resin over the first mold shape for forming the nozzle channel and the movable member; and removing the first mold shape. By this method, the movable member is formed in the nozzle channel between the ink inlet and the exothermic resistor to thereby provide a high-density, high-accuracy ink jet recording head which can improve a frequency response while maintaining proper discharge performance.

Abstract: An object of the present invention is to provide a printing system in which a user can obtain permission to use an encrypted copyrighted image by paying a royalty to a creator of the image so as to print the image, a printing method, and an ink tank which can be used to attain the printing system. The printing system comprises a computer and a printer which is connected to the computer. The computer can acquire an encrypted image with a print key which is distributed from an Internet distribution company. The printer has an ink tank replaceably mounted thereon, and the ink tank incorporates a security chip. The security chip contains a certificate key, generates a decryption key from a combination of the certificate key and the print key, and decrypts the encrypted image into print data which can be printed by the printer by use of the decryption key.

Abstract: The present invention provides a method for manufacturing an ink jet recording head utilizing ink bubbling by heating of an exothermic resistor to thereby eject ink and a method manufacturing the same, including the steps of: preparing a substrate provided with the exothermic resistor; applying such first resin on the substrate as to provide a first mold shape for forming the nozzle channel and the movable member; forming the first mold shape using the first resin; applying, on the substrate, second resin over the first mold shape for forming the nozzle channel and the movable member; and removing the first mold shape. By this method, the movable member is formed in the nozzle channel between the ink inlet and the exothermic resistor to thereby provide a high-density, high-accuracy ink jet recording head which can improve a frequency response while maintaining proper discharge performance.

Abstract: In this invention, a camera position display portion for displaying the position of a camera at which a to-be-photographed person looks at the time of photographing by the camera, a confirming process display portion for displaying “wait for photographing” to the to-be-photographed person, an end display portion for displaying “end of photographing” to the to-be-photographed person, and an exit display portion for displaying “traveling direction after the end of photographing” to the to-be-photographed person are provided and display of guidance as to the photographing state (the position at which the to-be-photographed person looks, waiting for photographing, end of photographing, traveling direction after the end of photographing) is made for the to-be-photographed person.

Abstract: Print data containing a specific print pattern and the number of paper sheets to be printed is input from an external interface. On the basis of the print pattern and the number of printing thereof to be printed, the temperature of an inkjet printhead is predicted by a program executed by a CPU. A drive signal for the inkjet printhead is set before the start of printing on the basis of the prediction result.

Abstract: The invention intends to maintain a constant ink discharge amount among the recording heads, even in case a total pulse width of pulse voltages applied to heat generating resistors. For this purpose, a rank table is prepared in such a manner, even in a situation where a total pulse width of the pulses applied to the heat generating resistor is 3 &mgr;s or less whereby the ink discharge amount decreases with a decrease in the total pulse width, that a maximum reached temperature on the surface of the heat generating resistors at the application of a preheat pulse becomes higher with a decrease in the resistance of a rank resistor, and a pulse width P1 on the rank table is made longer thereby compensating a decrease in the ink discharge amount with a decrease in the total pulse width and maintaining a constant ink discharge amount.

Abstract: The present invention provides an ink jet head substrate comprising a heat generating resistance member forming a heat generating portion, an electrode wiring electrically connected to the heat generating resistance member, and an anti-cavitation film provided on the heat generating resistance member and the electrode wiring via an insulation protection layer, and wherein the anti-cavitation film is formed from different materials with more than two layers.