Abstract: In a recorder, at least one set of marks spaced by a predetermined distance in a feed direction of a record paper are recorded on the record paper, the marks are detected by a detector while the record paper is fed, a time interval between detections of the marks is compared with a reference number of pulses applied to paper feed motors to detect a deviation, and rotations of the left and right paper feed motors are controlled to control the feed of record medium.

Abstract: An ink storing apparatus for an ink jet printing device includes a first case for storing a plurality of colored inks and a second case for storing black ink and having a receptacle for accepting waste ink from the printing device. Both cases are detachable from the printing device so that the first case and the printing device may remain connected when the second case needs to be replaced to replenish the black ink supply and provide a new waste ink receptacle.

Abstract: A multi-color printer prints a graph pattern in which, graph patterns printed in a hard-to-distinguish color are framed by a frame pattern of a different easy-to-distinguish color.

Abstract: A multicolor serial dot printer has memories for storing printing data, which memories number the same as the recording colors. A bar graph, for example, is printed in staggered patterns and numerals and the like are superposed on it. For printing in black and red, for example, the graph data to be printed in red is stored in a memory, while the numeral data to be printed in black is stored in another memory. A control section controls read/write operations of the printing data into and from the memories, and also controls the operation of a printer control section. Under the control of the control section, the printer control section drives ink jet nozzles to print in accordance with the printing data read out from the memories. The printed graph is easy to see, and printing paper sheets are saved.

Abstract: Disclosed is a recording apparatus wherein a record head having a plurality of ink jet nozzles is mounted on a carriage which scans a print plane. The number of ink jet nozzles of a first color ink used to record primary characters or patterns is larger than the number of ink jet nozzles of a second color ink used to record non-primary characters or patterns, and the print speed for the primary characters or patterns is higher than the print speed for the non-primary characters or patterns.

Abstract: An ink jet recording apparatus has recording means for discharging ink in response to a recording signal, cap means for covering the ink discharging portion of the recording means, attracting means for attracting the recording means covered by the cap means, and means for inhibiting the cap means from being released from a condition in which it covers the recording means, for a predetermined time after the attracting means has been operated.

Abstract: Disclosed is an electronic apparatus provided with a printer for printing characters on a recording material with at least two different colors of ink. The apparatus has means for setting a special printing mode. In the special printing mode, data are printed with ink in the first color while printing a background pattern with ink in the second color thereby forming a print with a background pattern.

Abstract: Electronic equipment with a printer has a special graph print mode designation means, in which, when a special graph print mode is designated by the special graph print mode designation means in a graph data input operation, the print density of the corresponding graph data area in the graph is modified.

Abstract: An ink jet printer comprises a recording head for discharging ink from an end thereof, a capping unit for releasably sealing the end of the recording head, a suction unit for sucking the end of the recording head by a negative pressure and an indication unit for indicating that a suction recovery operation is in progress until the negative pressure of the suction unit reaches a predetermined level.

Abstract: An electronic apparatus includes a printer for graph printing, in which the vertical and horizontal dimensions of the printed graph can be modified by a device for modifying the scales of the graph.

Abstract: A recording apparatus includes a recording unit having a plurality of dot forming portions disposed in a plane, a carriage which moves incrementally in a direction normal to the plane of dot forming portions, and a laser generator mounted on the carriage. The generator has a semiconductor which radiates a laser pulse in a direction substantially perpendicular to each dot forming portion of the recording unit.

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: When reversing the advancing direction of a carriage having a printing head, speed control for the carriage is forbidden to enable high-speed recording and smooth movement of the carriage.

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: There is a recording apparatus utilizing a linear motor in which a movable carriage is provided with a detector for detecting its speed and position while the apparatus itself is provided with a detector for detecting the initial position of the carriage.

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: A recording apparatus having an ink jet station for printing in two directions during movement of a carriage by a linear motor, and a device for eliminating distortion in printing.

Abstract: Recording apparatus utilizing a linear motor, having a mechanism for automatically stopping the motor in case of abnormal stopping of the carriage and an alarming mechanism for providing an alarm in the case of such abnormal carriage stopping.

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.