Abstract: A motor speed control apparatus which is provided with means for performing the control to always apply to a motor a driving force smaller than a frictional load of a driving system which is driven by the motor and to apply to the motor a driving force larger than the frictional force of the driving system when the motor is accelerated.

Abstract: A recording apparatus comprises recording means for effecting recording on one surface of a recording medium, means for feeding the recording medium, a housing for containing the recording means and the feeding means therein, and means provided at a position whereat it is discharged outwardly from the housing when the recording medium is fed by the feeding means, the means being for guiding the recording medium in a predetermined direction and guiding the recording medium so that on one surface of the recording medium, the means can contact only the widthwise end portions of the recording medium.

Abstract: This invention relates to an ion implantation apparatus and method for maskless processing of substrate, and more particularly, to form ion implanted pattern by selectively scanning a focused ion beam on the surface of a processing substrate. The timing of the apparatus is controlled by a variable frequency clock pulse. By using the variable frequency oscillator, a clock frequency can be controlled continuously. So, the ion implantation pattern is easily controlled by the clock frequency and scanning number with high accuracy compared to a prior art.

Abstract: A decoder wherein the received codes consisting of a plurality of binary bits are sent to the first and second corrector which are operating in parallel in order to correct random and burst errors respectively. An error-corrected output of the former is further determined whether it becomes all zeros or not by the syndrome calculation. If the result is affirmative, an output of the first corrector, otherwise an output of the second corrector is selected to be sent to the output terminal.

Abstract: Disclosed is an ink jet printer wherein a flexible member associated with an ink ejection operation of an ink jet nozzle is arranged such that a driving load of a carriage which carries the ink jet nozzle is uniform at any point along a path of movement of the carriage.

Abstract: An ink jet printer of an improved construction which includes a platen holding thereon a recording sheet; a container moving along the platen and comprising a container main body which divides its interior into a plurality of ink storing chambers and having an opening common to the ink storing chambers, and a lid to close the common opening; and a plurality of ink jet nozzles provided in the ink storing chambers and to eject ink from the corresponding ink storing chambers.

Abstract: The apparatus of the present invention is provided with a stain preventing element provided between a print drum and a hammer and adapted to shield alternate digits to be printed, said stain preventing element being shiftable in the transverse or advancing direction of print sheet. Said hammer is an intermediate hammer which is set to a predetermined initial position from an unsteady position upon the turning on of the power supply, and simultaneously necessary preparations such as paper feeding and ink application onto the print drum prior to the printing are performed. Also there is provided a stain preventing mechanism for multi-color printing, and the above-mentioned stain preventing member is provided with a means for preventing ink diffusion. Also the paper feed plunger etc. is structured similar to the said hammer thereby rendering the entire apparatus smaller and more compact.

Abstract: A residual ink detection mechanism for detecting the amount of residual ink within an ink container of an ink jet printer is disclosed wherein the ink container comprises a flexible bag, and electrodes are provided at least at opposite positions of this bag to constitute a capacitor, so that the amount of residual ink within the ink container may be detected by detecting the electrostatic capacity between these paired electrodes.

Abstract: Ink jet recording apparatus includes a guide member provided in parallel to a transversal direction of a recording sheet, a carriage having a recording head and adapted to move on the guide, a signal generator provided in parallel to the guide, and a control unit for causing the signal generator to detect position and speed of the carriage.

Abstract: An ink jet apparatus comprises an ink jet nozzle, a cap capable of fitting said ink jet nozzle, and a suction means for supplying negative pressure to the ink jet nozzle and a ink-storage vessel in communication with said ink jet nozzle, characterized in that the suction means is provided with at least two independent suction chambers, with at least one of the suction chambers being in communication with the ink-storage vessel, and with at least the other suction chamber being in communication with the cap.

Abstract: A data transmission system including transmission stations for transmitting a plurality of different kinds of input data and receiving stations for receiving only one kind of the data transmitted from the transmission stations. A transmission station is actuated by the demand of the receiving station and the plural kinds of data are modulated at the modulation central frequency corresponding to the respective data. The demodulation central frequency of each one of the receiving units is set for only one kind of data and only one kind of data transmitted by the transmission units are demodulated in a receiving station.

Abstract: An exchange center is connected to telephone lines and a telephone and a data transmitter as terminal equipment are connected to the telephone lines. The data transmitter is actuated depending upon the polarity of DC voltage applied to the telephone lines. The telephone line is potentially opened by detecting the current of the telephone during the operation of the data transmitter. The impedance of the telephone line during the opening state is detected whereby the operation of the data transmitter is stopped by inverting the DC voltage applied to the telephone line and the telephone is predominantly communicated through the exchange center over the data transmitter.

Abstract: There is an ink jet printer in which an electrostriction element is associated with at least a part of an ink chamber for causing ink emission from an ink nozzle connected to said ink chamber in response to a voltage applied to the electrostriction element. Said voltage is changed in response to the ambient temperature and made higher or lower respectively in a low or high temperature.

Abstract: An apparatus for selectively granting priority use of telephone lines to a telephone or data transmitter each connected via the telephone lines to an exchange center. Access of the data transmitted to the exchange center is typically enabled by application of DC voltage of a predetermined polarity to the telephone lines by a control circuit. A current detection circuit is provided in series with the telephone for detecting when the telephone lines are providing current to the telephone during a time when the date transmitter is transmitting or receiving data via the telephone lines. In the event that the current detection circuit detects a current component on the telephone lines to the telephone, application of power to the data transmitter is stopped and priority use of the telephone lines is granted to the telephone.

Abstract: A recording apparatus has a linear motor, a recording head driven by the linear motor, and a detector for detecting the length of data to be recorded by the recording head. The running direction of the recording head is changed in response to the output of the detector.

Abstract: A printing apparatus has a motor, a character drum rotated by the rotational force of the motor, a printing paper feed mechanism operable by the rotational force of the motor, and a mechanism for shifting hammers and a stain preventing member integral with said mechanism and shiftable by the rotational force of the motor. The stain preventing member has shielded portions at every other column.