Abstract: According to one embodiment, an inkjet recording apparatus includes a plurality of inkjet heads of a multi-drop method, a first controller, and a second controller. The first controller controls ejection of ink drops from a first inkjet head for ejecting a first ink for which print resolution is required, in a manner that a number of ink dots formed in a main scanning direction is great, and that the number of ink drops ejected for each one of the ink dots is small. The second controller controls ejection of the ink drops from a second inkjet head for ejecting a second ink for which coverage over a recording surface of the recording medium is required, in a manner that a number of ink dots formed in the main scanning direction is small, and that the number of ink drops ejected for each of the ink dots is great.

Abstract: An ink jet printing apparatus includes a table which places a print medium on, a switching unit which switches the print medium to a fixed state or a released state with respect to the table, a carrying unit which carries the table, at least one or more print heads which eject ultraviolet curable ink, a first UV curing unit which is provided downstream from each of the print heads along a direction of carrying the table from an initial position toward the print heads and casts ultraviolet rays to provisionally cure the ultraviolet curable ink, and a second UV curing unit which is provided downstream from the first UV curing unit provided on the most downstream side along the direction of carrying the table from the initial position toward the print heads and casts ultraviolet rays to fully cure the ultraviolet curable ink.

Abstract: A printer head is so structured that, with each time division groups given as A, B, C, the head and printing data are moved at predetermined speeds and, with the sequential drive order of the respective division groups given as A, B, C, a printing result emerges in one row in a nozzle direction to a relative moving direction of the head and printing medium. In this printer head, a driving is effected in a sequential drive order including C, B, A with a relative speed between the head and the printing medium set double its speed and print data corresponding to each time division is received and printed so that a printing result in the relative moving direction emerges at a pitch double that predetermined pitch and a printing result of the groups A, C nozzles and B nozzles emerges in a state displaced by a predetermined pitch.

Abstract: When nozzles of an inkjet head face cells of a liquid crystal filter, respectively, several ink droplets having small sizes are continuously ejected from each nozzle. The several ink droplets having small sizes, which are continuously ejected from each nozzle, are securely accommodated in and applied to each of the cells without hitting a circumferential portion of the cell and thereby broken.

Abstract: A driving control apparatus incorporating a forming circuit for receiving serial data including start bit data and driving control data, detecting the start bit data from the serial data and forming a control signal in accordance with the detected start bit data, a storing portion for storing the driving control data in a storing region in accordance with the control signal formed by the forming circuit, and a generating circuit for generating a driving signal for driving a subject which must be driven in accordance with the driving control data stored in the storing portion and the control signal formed by the forming circuit. Since the start bit data provides start timing, a multiplicity of control signals are not required.

Abstract: A method and apparatus for driving a capacitive element are provided wherein: (i) when charging the capacitive element by driving and controlling both electrodes of the capacitive element, the capacitive element is charged by setting one of the driving circuits for varying one of the electrode potentials first at a high impedance and then at a low impedance; and (ii) when discharging the capacitive element by driving and controlling both electrodes of the capacitive element, the capacitive element is discharged by setting one of the driving circuits for varying one of the electrode potentials first at a high impedance and then at a low impedance.

Abstract: A capacitive load driving unit includes a plurality of capacitive loads, a drive circuit for charging and discharging the capacitive loads, a pair of power lines for supplying a drive voltage from an external power source to the drive circuit, and a current reserve circuit for reserving a current required by the drive circuit for charging the capacitive loads. The current reserve circuit includes a capacitor that is charged by the drive voltage from the power lines, and a coupler section for coupling the capacitor between the power lines except for when a defect inspection is conducted.

Abstract: Control signals are input to the gates of a P-MOS transistor and an N-MOS transistor of a CMOS drive circuit from respective control signal generating sections. The CMOS drive circuit drives a piezoelectric member as a capacitive element and the piezoelectric element is used in an ink jet head. A substrate of the P-MOS transistor is provided with a voltage higher than a power supply of the CMOS drive circuit. A first potential difference is supplied between terminals of the piezoelectric element and thereafter, a second potential difference of a polarity opposite to the first potential difference is further supplied between the terminals. A discharge operation is inserted in a time period from the time when supply of the first potential difference is completed till the supply of the second difference gets started. The discharge operating time period is set to a proper value at which a desired operating speed, high reliability and low power consumption are achieved.

Abstract: A capacitive load driving unit includes a plurality of capacitive loads, a drive circuit for charging and discharging the capacitive loads, a pair of power lines for supplying a drive voltage from an external power source to the drive circuit, and a current reserve circuit for reserving a current required by the drive circuit for charging the capacitive loads. The current reserve circuit includes a capacitor that is charged by the drive voltage from the power lines, and a coupler section for coupling the capacitor between the power lines except for when a defect inspection is conducted.

Abstract: A print head driving apparatus is provided with an input terminal for inputting serial data which includes printing data and timing data put in the printing data, a printing data number control circuit for detecting the timing data, a shift register and a latch circuit for extracting the printing data from the serial data with the timing data used as a starting point, and a driving waveform selecting circuit for outputting a driving signal based on the printing data extracted from the shift register and latch circuit. With this constitution, no control signal for latching is needed.

Abstract: A capacitive load driving unit includes a plurality of capacitive loads, a drive circuit for charging and discharging the capacitive loads, a pair of power lines for supplying a drive voltage from an external power source to the drive circuit, and a current reserve circuit for reserving a current required by the drive circuit for charging the capacitive loads. The current reserve circuit includes a capacitor that is charged by the drive voltage from the power lines, and a coupler section for coupling the capacitor between the power lines except for when a defect inspection is conducted.

Abstract: In a capacitive element driving apparatus which changes, by an output circuit, the electrode potentials of the electrostatic capacitive element of a transducer forming a capacitive load such as a piezoelectric member to drive and control the electrostatic capacitive element, when the electrode potentials start changing and simultaneously change in the same direction by the function of a same-direction detection circuit, the potentials to be applied to the electrodes are controlled with a high impedance. While a portion between the electrodes of the electrostatic capacitive element of the transducer is being charged or discharged, the potentials to be applied are controlled with a low impedance lower than the high impedance.

Abstract: A capacitive load driving unit includes a plurality of capacitive loads, a drive circuit for charging and discharging the capacitive loads, a pair of power lines for supplying a drive voltage from an external power source to the drive circuit, and a current reserve circuit for reserving a current required by the drive circuit for charging the capacitive loads. Particularly, the current reserve circuit includes a capacitor that is charged by the drive voltage from the power lines, and a coupler section for coupling the capacitor between the power lines except for a defect inspection.

Abstract: In an ink-jet head driving device, data of a shift register is latched by a latch circuit. The data latched by the latch circuit is input to energization signal selection circuits. At this time, each selection circuit receives 1-bit data for operating a corresponding ink chamber, and 2-bit data for operating adjacent ink chambers as reference data. Each selection circuit selects one from energization signals using the 3-bit data, and supplies the selected energization signal to a corresponding head driver, thereby generating a drive waveform for driving the ink chamber.

Abstract: When charging the capacitive element by driving opposed electrodes of an electrostatic capacitance of the capacitive element, the capacitive element is charged, with one of driving circuits set in a high impedance state, the one of the driving circuits varying a potential of one of the electrodes, and then the capacitive element is charged, with the one of the driving circuits set in a low impedance state. When discharging the capacitive element by driving the opposed electrodes of the electrostatic capacitance of the capacitive element, the capacitive element is discharged, with one of driving circuits set in the high impedance state, the one of the driving circuits varying a potential of one of the electrodes, and then the capacitive element is discharged, with the one of the driving circuits set in the low impedance state.

Abstract: A driving device of a printer head which receives serial print data of the maximum four bits tone, and selects a conductive waveform of a head by this print data for printing, comprising a serial parallel conversion circuit which converts serial print data of two bits tone for example into parallel data and which can convert maximum four bits in parallel, four bit parallel shift register for transferring the parallel print data converted by this conversion circuit two bits by two bits, and a mask circuit for masking the four bits parallel data transferred from this shift register other than a necessary two bits, and a conductive waveform of a head is selected by the two bits print data from this mask circuit to print.

Abstract: A printer control apparatus includes a rotary encoder for detecting the rotational position of a rotary drum around which printing paper is wound and outputting a timing pulse, a reference point pulse creating circuit for outputting a reference point pulse based on the timing pulse, an up-counter for measuring the passage time of the reference point interval based on the reference point pulse, a plurality of comparators for generating a train of print timing pulses in a time interval corresponding to and shorter than the passage time of the reference point interval measured, a multiplier circuit having a different up-counter for determining the total required time of the train of print timing pulses, a print timing correction circuit for correcting the print timing pulse train based on the driving frequency of the ink-jet print head, and a head drive circuit for driving the head according to the print timing pulse train from the correction circuit.

Abstract: A head driving device has first MOS field effect transistors connected between a VDD power supply terminal and electrodes, and second MOS field effect transistors connected between a VSS power supply terminal and the electrodes. In the driving device, ink is ejected from each ink chamber due to the variation in pressure which is caused by charging and discharging of corresponding capacitances each across an electrode of the predetermined ink chamber and electrodes of ink chambers adjacent to the predetermined ink chambers. Both of the first MOS field effect transistors and second MOS field effect transistors are formed on one semiconductor substrate. T the potential of the semiconductor substrate is set to be out of a range between the potentials of the VDD and VSS power supply terminals.

Abstract: A head driving device includes an ink-jet head having a large number of ink chambers arranged side by side and separated by piezoelectric elements, FETs for connecting electrodes of the ink chambers to a +Vcc power source line, FETs for connecting the electrodes of the ink chambers to a -Vcc power source line, bi-directional switches for connecting the electrodes of the ink chambers to a ground line, selectors each for selecting one of a plurality of pulse signals in which at least one of the pulse width and pulse interval is different according to gradation data, sequencers for generating sequence signals according to the pulse signals from the selectors, and decoders for decoding the sequence signals into driving signals and supplying them to the FETs and bi-directional switches.

Abstract: A system for automatically tracking objects through a video sequence uses a method which automatically tracks an object by estimating the location of the object in a subsequent frame, comparing test windows in the subsequent frame with an object window encompassing the object in the original frame, and selecting the best match window which is most similar to the object window. The location of the best match window corresponds to the location of the object in each frame of the video sequence. The resulting location information can be combined with the video sequence to create interactive video applications in which an user of the application can select individual objects in the interactive video sequence.