Abstract: A recording apparatus includes a recorder for recording on a recording medium, with the recorder being capable of moving toward and away from a conveyance route of the recording medium. A drive force transferring device transfers a drive force to the recorder and moves the recorder across the conveyance route of the recording medium. The recorder is biased toward a direction of the conveyance route of the recording medium by the drive force transferring device.

Abstract: The present invention provides a sheet conveying apparatus comprising a convey roller for conveying a sheet; a plurality of pinch rollers arranged along the convey roller and adapted to urge the sheet against the convey roller; a pinch roller holder formed as one piece for supporting the plurality of pinch rollers, the rigidity of the pinch roller holder in a sheet conveying direction being greater than the rigidity of the pinch roller holder in a direction perpendicular to the sheet conveying direction; and a biasing means for acting on the pinch roller holder to urge the pinch rollers against the convey roller.

Abstract: A device for controlling the power supplied to windings of a stepping motor includes a pulse generator for splitting one step drive period of the motor into a plurality of sections, the number of sections and increasing or decreasing depending upon the drive frequency. The pulse generator, also sets the duty cycle of a pulse applied to the motor. The device also includes a stepping motor drive circuit for exciting each phase of the motor with a current determined by the duty cycle of pulse, and a duty changing device for changing the duty cycle for each of plural sections in one excitation phase of the stepping motor, wherein a current wave input into the motor can be maintained as a sinusoidal wave from low-speed rotation to high-speed rotation of the motor by changing the number of sections in excitation depending upon serial drive operations, thereby achieving motor control with less rotation inconsistencies and less noise.

Abstract: A replaceable ink cartridge can be inserted into and removed from a bubble jet printer receptacle for removably mounting the cartridge. The cartridge when mounted will cooperate with a hollow needle for supplying liquid ink to a print head and a pipe for removing waste ink from the head. The cartridge includes a container, a liquid ink reservoir and an absorber for waste liquid ink in the container, an outlet and an opening on the front wall of the container, and a label secured to the top wall of the container. The label contains a surface wiring resistance pattern including contact portions which are spaced apart and have an electric connection between them. When the container is mounted in the receptacle, the needle enters the outlet to connect the ink reservoir to the head, and the absorber enters a waste ink pipe opening. The contact portions then make sliding contact with spaced-apart electric terminals in the printer, connecting the terminals and thereby activating a control circuit in the printer.

Abstract: A recording apparatus comprises a recording device for recording an image on a recording medium, a transport device for transporting the recording medium past an area at which the recording device is provided, a platen provided in the area for supporting the recording medium, and a bearing provided in the platen for fitting therein a shaft of a transport roller of the transport device.

Abstract: A sheet supplying apparatus comprises a sheet supporting plate for supporting sheets, a separation claw for regulating one end of a leading edge of the sheets supported by the sheet supporting plate, sheet supply rollers for feeding out the sheets supported by the sheet supporting plate, a regulator for regulating leading ends of the sheets supported by the sheet supporting plate, and a guide for guiding side edges of the sheets on which the separation rollers act. One sheet supply roller is positioned between the separation claw and the regulator in a direction perpendicular to a sheet feeding direction.

Abstract: A recording apparatus has a recording device to record an image onto a sheet in accordance with input recording data, a relative moving device to relatively move the sheet for the recording device, a driver to drive the relative moving device, and a controller to control a driving speed of the driver in different modes in accordance with the kind of recording data. In the case of graphics data or data including a block graphic character, the driver is controlled in a constant driving speed mode. In the case of ordinary character data, the driving speed of the driver is increased for a predetermined time and, thereafter, the driving speed is reduced for a predetermined time.

Abstract: The present invention provides a sheet supplying apparatus having an extendible sheet support for supporting sheets, a sheet supply for feeding out the sheets supported by the sheet support, a shiftable separating claw capable of separating the sheets fed by the sheet supply, one by one, by engaging from corners of the sheets supported by the sheet support, a regulator for shifting the separating claw toward the sheet support in response to insert and retracting movements of the sheet support and a second separator for separating the sheets rested on an upper surface of the separating claw shifted toward the sheet support by the regulator, one by one, when the sheets are fed out by the sheet supply.

Abstract: The invention relates to a recording apparatus for effecting recording on a recording material. The recording apparatus comprises a stepping motor, a recording head capable of reciprocating along the recorded material by a drive force of the stepping motor to effect recording on the recording material, an angular position detector for detecting a rotated angular position of a rotor of the stepping motor, a controller for controlling drive of the stepping motor in a closed-loop manner dependent on the detected result of the detector, a controller for operating the stepping motor in a mode of stepwise motor drive, a movement position detector for detecting a movement position of the recording head, and switching circuitry for switching over between the closed-loop control and the stepwise motor drive dependent on the detected value of the movement position detector.

Abstract: An ink tank for storing ink comprises an ink storage unit, an induction outlet provided in the ink storage unit for delivering to the outside the ink stored in the ink storage unit, and a partition member for partitioning the region where the induction outlet is provided from the rest of the ink tank, the partition being higher than the height at which the induction outlet is provided and having at least a part lower than the liquid level of ink stored in the ink storage unit, thus preventing any inconveniences resulting from the mixture of air and ink by vibration in order to obtain a stable printing condition for an ink jet recording apparatus operated at a high speed.

Abstract: A sheet feeding apparatus includes a sheet supporting device for supporting sheets, a supply device for feeding the sheets supported by the sheet supporting device in a sheet feeding direction, a separating claw device for separating, one-by-one, the sheets fed by the supply device by regulating at least one front corner of the sheets relative to the sheet feeding direction. A switching device selectively switches positions of the separating claw device between a first position where the separating claw device is separated from the sheet supporting device and a second position where the separating claw device is adjacent to the sheet supporting device. A separation device separates, one-by-one, the sheets fed by the supply device in a condition that the separating claw device is in the second position.

Abstract: The present invention provides a sheet feeding apparatus including a sheet supporting device for supporting sheets, more than one rotary sheet supply device for feeding out the sheets from the sheet supporting device, a separating device for separating the sheets by regulating a front corner of a sheet to be fed out by the rotary sheet supply device, wherein the rotary sheet supply device closest to the separating device as a greater sheet feeding force than the other rotary sheet supply device.

Abstract: The present invention provides a recording system including a recording head for performing recording on a sheet, a first rotary member disposed at a downstream side of the recording head and contacting an unrecorded surface of the sheet on which the recording is performed by the recording head and adapted to apply a feeding force to the sheet, and a second rotary member being provided at its peripheral surface with a plurality of teeth and contacting a recorded surface of the sheet with the tips of the teeth thereof, and cooperating with the first rotary member to feed the sheet. The plural teeth of the second rotary member are staggered with other teeth in a direction transverse to a sheet feeding direction.

Abstract: This invention discloses a recording apparatus for effecting recording by moving a carriage which supports a recording head, along a recording material. The apparatus is provided with a motor speed controller for a closed-loop control of the rotating speed of a carriage driving motor. The speed control output signal from the motor speed controller is set at a predetermined value when the carriage driving motor reaches a speed of the constant speed control from an acceleration state.

Abstract: A sheet conveyor for conveying a sheet by engaging an engaging member with openings formed in a sheet and conveying the sheet by displacement of the engaging member. The conveyor includes a holding device for holding the engaging member so as to be movable between an operative position and a retracted position retracted from the operative position, a device deformable to move the engaging member provided on the holding device between the operative position and the retracted position, and a drive device for driving the holding device to displace the engaging member.

Abstract: A recording apparatus includes a recording head for effecting a recording operation on a recording material while it is being moved; a plurality of detectors for detecting plural conditions of the apparatus; and a controller for effecting the recording operation in accordance with the conditions detected by the detectors. The plurality of detectors includes a detecting element movable together with the recording head and a plurality of members to be detected corresponding to the conditions of the apparatus and disposed along a movement path of the detecting element.

Abstract: A motor driving device for a motor having a rotor and a plurality of excitation coils includes a detector for detecting a rotation position of the rotor, a controller for performing closed-loop control of the switching timing for excitation currents applied to the excitation coils according to detection signals from the detector, and drive control circuits for controlling the current supplied to the excitation coils in accordance with an output from the controller. The drive control means includes a plurality of pulse-width modulation signal generators for controlling current passing through the excitation coils.

Abstract: In a recording apparatus including a feed knob for manually feeding a recording sheet, a torque limiter is provided for preventing transmission of a torque more than a predetermined value from the feed knob to a recording sheet feeding portion.

Abstract: A thermal head includes electrodes, a heat generating member connected to the electrodes and a heat generating member support having bevelled edges. The thermal head is manufactured by preparing the substrate having the heat generating members and the electrodes fixed thereon, forming grooves along cut lines of the substrate such that bevels are formed at edges of individual elements when the substrate is cut into the individual elements along the cut lines, and cutting the substrate along the cut lines.