摘要:
The present invention provides an impact dot printer free from the missing of dots.An impact dot printer for recording dots on a recording medium comprises a printer wire having a printer end, a guide member for supporting the printing wire, an ink ribbon which contains an ink composition comprising a dye and a solvent and is positioned between the printing end of the printing wire and the recording medium. The printer also has a lubricant containg an oil component in the guide member for permitting the printing wire to be easily moved. The solubility of the solvent for the dye in the oil component of the lubricant is more than 400 g/100 g of oil.
摘要:
A controller for a multiplex winding motor. When a multiplex winding motor is driven and controlled by inverters and each winding includes a current control system, the controller compensates interference between the current control systems of windings. Voltage non-interacting arithmetic sections compute a voltage command value supplied to voltage applying sections, which are connected to a set of windings, not only by using an output value of a current control section for controlling current in one winding but also using an output value of a current control section for controlling current in another winding, so that voltage interference between the current control sections is compensated.
摘要:
A traction machine base includes a top member, a bottom member, a bottom member, first bolts, and second bolts. The top member is intended for supporting a traction machine. A plurality of attachment holes for fixing the top member are formed in the bottom member. A plurality of attachment holes for fixing the top member are formed in the bottom member. The first bolts pass through the attachment holes and fix the top member to the bottom member. The second bolts pass through the attachment holes and fix the top member to the bottom member. The top member is fixed to the bottom member using a smaller number of the first bolts than the number of the attachment holes. The top member is fixed to the bottom member using a smaller number of the second bolts than the number of the attachment holes.
摘要:
An impact dot printer designed to reduce noise, including a first cover, a second cover, and an overlap portion therebetween. The first cover is located above a print section, and may include sound wave reflecting plates, sheet guide plates, and a sound absorbing member, each reflecting plate, each sheet guide plate, and the sound absorbing member being arranged close to the print section. The second cover is rotatable relative to the first cover and forms a printed sheet discharge path together with the first cover. The second cover also has sound wave reflecting plates and sheet guide plates. Each sheet guide plate is designed to be projected farther from the associated cover than the corresponding reflecting plate on said cover. The distance between adjacent sheet guide plates is made smaller than the width of the smallest sheet to be used in the printer. The overlap portion between the first and second covers is arranged so that essentially no opening is provided between the first and second covers when viewed from the top or side.
摘要:
Provided is a reflector oscillating apparatus in which the positions of a reflector and a compensating plate are detected so as to perform positioning with a high degree of positional accuracy (closed-loop control). Further, since the reflector and the compensating plate are driven by a couple of forces, no reaction forces by drive forces are applied to a rotary shaft and a support section, and accordingly, it is possible to enhance the positioning accuracy and to realize a short transient time and a large amplitude. Further, the magnetic circuit is commonly used so that the dimensions of a motor, that is, the height thereof in particular, can be reduced, irrespective of a large drive force. Accordingly, the reflector oscillating apparatus can be greatly miniaturized. Further, by commonly using the magnetic circuit, the impedance of the coil can be reduced, thereby it is possible to drive the apparatus at a high speed with a low drive voltage.
摘要:
A nozzle is configured to discharge a fluid containing a raw material of a catalytic layer to a substrate having first and second end faces and provided with holes each extending from the first end face to the second end face. The nozzle is provided with discharge ports each discharging the fluid toward the first end face of the substrate.
摘要:
A printer wherein a drive roller of a pair of sheet discharge rollers is made of rubber and a driven roller of the pair of sheet discharge rollers is made of synthetic resin; the leading end of a sheet is guided so as to be abutted against the drive roller earlier than the driven roller; the sheet that is in the course of being discharged is guided by a sheet discharge tray so as to come in slidable contact with an edge portion that is on a print head side of a sheet discharge opening. As a result, the printer can provide satisfactory printing conditions quickly with a simple structure and reduce noise leaking from the sheet discharge opening.
摘要:
An impact dot print head for driving a printing wire is provided. An armature has a printing wire mounted at one end and is attached to a leaf spring at its other end. A ring-shaped primary magnet provides a magnetic force for maintaining the armature in a stand-by condition. A plurality of coil electromagnets provided for each respective armature. The coil magnets form a ring having an inner circumference. A ring-shaped magnetic member is provided within the diameter of the ring formed by the coil electromagnets to reduce the magnetic interference between adjacent electromagnetic coils during driving of the printing wires.
摘要:
The printing head for a wire-type dot printer includes a plurality of electromagnetic coils, a wire, a permanent magnet, and a leaf spring. The arrangement of the wire and the leaf spring allows the print head to operate stably during high-speed operation. The wire dot print head has a head body in which the wire drive units are assembled so there is no problem with magnetic interference between the electromagnets. In addition, the wire dot print head may be comprised of a multiplicity of wires, and may be of a double-deck construction type which renders the unit more compact. This arrangement allows the construction of a multiwire high speed print head which can be easily assembled from simple parts.
摘要:
A traction machine base includes a top member, a bottom member, a bottom member, first bolts, and second bolts. The top member is intended for supporting a traction machine. A plurality of attachment holes for fixing the top member are formed in the bottom member. A plurality of attachment holes for fixing the top member are formed in the bottom member. The first bolts pass through the attachment holes and fix the top member to the bottom member. The second bolts pass through the attachment holes and fix the top member to the bottom member. The top member is fixed to the bottom member using a smaller number of the first bolts than the number of the attachment holes. The top member is fixed to the bottom member using a smaller number of the second bolts than the number of the attachment holes.