摘要:
An ink jet printer head including a pair of body plates bonded together; a recess portion formed on at least one of the body plates, the recess portion having a plurality of pressure chambers and a plurality of orifices respectively communicating with the pressure chambers; a pressure generating section having a plurality of driving portions formed from a piezoelectric member, the driving portions having pressure applying surfaces respectively opposed to the pressure chambers; and a resin member molded with the pressure generating section inserted therein to form at least one of the body plates. Accordingly, even when the density of arrangement of the driving portions is increased, the resin member can be surely filled into each space between the adjacent driving portions, thus realizing high-density printing and improving the productivity of the ink jet printer head.
摘要:
A photoconductor is disclosed, which comprises a conductive cylindrical support which is substantially not hollowed, the conductive cylindrical support having a drive transferring mechanism coaxially and unifiedly provided on at least one of the end portions thereof, the conductive cylindrical support having a photoconductive layer on the outer periphery. The moment of inertia I (g . cm.sup.2) of the substantially not-hollowed conductive support is in the range of 0.4.ltoreq.I.ltoreq.140 (g . cm.sub.2), the diameter thereof being in the range from 0.5 to 2.0 cm. When the relation of C/(S . .omega.).ltoreq.0.4 (where S (cm.sup.2) is the square measure of the portion of the photoconductive layer on the photoconductor; C (cal/.degree.C.) is the heat capacity of the substantially not-hollowed cylindrical support; and .omega. (rad/s) is the rotating speed in development) is satisfied, high quality images can be readily and stably obtained without damages of the drive system.
摘要:
A laser beam emitted from the beam emitting unit is deflected for scanning by a reflector rotated by a scanner motor. The deflection scanning beam passes through a meniscus lens device provided close to the reflector, and converges the laser beam on an image-forming surface. The meniscus lens device has an incident surface, a radius of curvature of which is set smaller than that of an output surface thereof, with a convex surface thereof facing the image-forming surface. The laser beam emitting unit, the reflector, the scanner motor, and the meniscus lens device are all integrally built in a housing.
摘要:
A label printer for printing an image on a plurality of labels attached to a base sheet and issuing the labels on which the image has been printed. The label printer includes a platen roller, a pinch roller adapted to separably contact the platen roller through the base sheet, a slide frame for supporting the pinch roller so that the pinch roller is movable between a contact position and a separate position with respect to the platen roller, and a frame stopper for releasably holding the slide frame in the contact position where the pinch roller is in contact with the platen roller. When the frame stopper is released from the slide frame, the slide frame is slid to reach the separate position to widely separate the pinch roller from the platen roller. Accordingly, the base sheet can be easily inserted through the space defined between the platen roller and the pinch roller separated therefrom.
摘要:
A printed slip issuing apparatus is provided with a cutting blade having a cutting portion and disposed with its cutting portion extending along the width of a form web at a position immediately below a printing unit for printing on the form web, and a nipping member disposed near and opposite to the cutting portion of the cutting blade so as to form a web nipping region in combination with the cutting portion. When cutting off a printed portion of the the form web, the form web is nipped between the cutting portion of the cutting blade and the nipping member in the web nipping region to enable the cutting blade cut off the printed portion clearly.
摘要:
A binded carbon brush includes a brush main portion formed mainly of carbon, and an electric conductor formed by a material, such as a copper powder, having an electric resistivity lower than that of the brush main portion and extending along a main current direction of the brush. In the cross section of the brush perpendicular to the main current direction, the diameter or the vertical and horizontal sizes of the conductor is so set as to be smaller than both the vertical and horizontal sizes of the brush main portion.
摘要:
Disclosed is a method for driving a printer carrier. One power source is connected via a constant current circuit to the carrier motor. Data storing means stores the current command data corresponding to the acceleration, constant speed printing and deceleration of the carrier motor. According to the method, the current command data from the data storing means is latched in synchronism with a clock signal. The latched data is converted to a current reference voltage. The output current of the constant current drive circuit is varied in accordance with the current reference voltage. Changing the current command data as desired makes it possible to adjust freely the torque of the carrier motor for acceleration and deceleration on a constant voltage from one power source.
摘要:
An electronic cash register includes a RAM for storing an article file in which article data for various articles are filed. The article data includes an article code, an article name, a department, and a unit price. The RAM also includes an auxiliary file in which article data items of other articles re stored, which article data items include an article code and an article name. An input section is provided for inputting data of an article code, a department, and a unit price, and a processing unit is provided for reading out article data of an article corresponding to the article code input via the input section from the article file and processing the readout article data. The processing unit reads out article data filed in the auxiliary file, nd sets the readout article data in the article file along with data input via the input section.
摘要:
A label printer including a printing section for printing a given image on a label, a label issue opening for issuing the label after the given image is printed thereon by the printing section, a sensor having a light emitting element and a light receiving element, a first prism having a reflecting surface located on one side of the label issue opening, and a second prism having a reflecting surface located on the other side of the label issue opening. The light emitted from the light emitting element is reflected on the reflecting surface of the first prism, and is then reflected on the reflecting surface of the second prism to reach the light receiving element. When the label is issued from the label issue opening, an optical axis between the reflecting surfaces of the first and second prisms intersects a surface of the label. Thus, the presence of the label projecting from the label issue opening can be surely detected.