摘要:
A recording medium includes a liquid crystal material whose polarizing axis is controlled by an applied electric field, a layer including the liquid crystal material, and spacers for maintaining a constant spacing between the layer, and is formed in the form of a sheet. A visible image is recorded on the recording medium by applying a predetermined electrostatic charge image composed of electrostatic charges on a surface thereof and by controlling the polarizing axis of the liquid crystal material by an electric field formed by the charges of the electrostatic charge image, which controls reflectance or transmittance of incident light.
摘要:
A vector control unit that has an inverter connected with an induction motor which is not only electrically driven but is also being operated in a regenerative condition. The vector control unit comprises a detection circuit for detecting that the induction motor is being operated at a low speed and for detecting that signs of a rotor electrical angular velocity command and a slip angular velocity command differ from each other, and a control circuit for performing control such that the slip angular velocity command is not included in the angular velocity command when the induction motor is being operated at low speed and the signs of the rotor electrical angular velocity command and the slip angular velocity command differ from each other.
摘要:
An image formation system includes an image data outputting device for outputting three-primary-color image data for forming a full color image, and a printer selectively writing the image data from the image data outputting device in an optical image memory by beam light for printing the image out on a recording medium, the printer including, a specifying device for specifying an arrangement of images written in the optical image memory, and a writing device dividing the single optical image memory into sections corresponding to the specified arrangement, for writing primary color images into the sections, the optical image memory being a memory where a stored image is optically recognizable and can be repetitively read out.
摘要:
Image formation device includes an optical image memory which is shaped like a flat board and includes an image area formed almost in the center portion for storing an image and a void area surrounding the image area, where no image is written, the image stored being optically recognizable and able to be repetitively read; image writing means for writing the image in the optical image memory by the selectively irradiating the image area in accordance with data on a desired image; exposing means for exposing a photosensitive material by irradiating light through the optical image memory to the photosensitive material from which color coupler in a non-exposed portion is discharged by applying pressure; light control means for controlling a width of light irradiated to an area of the photosensitive material through the void area in the direction of the widthwise extension of the photosensitive material so that the width of light is identical with the width of the photosensitive material; and developing means for pressing and developing the exposed photosensitive material overlaid with an image receiving medium where the image is to be formed.
摘要:
A thermal head comprises a substrate providing a flat surface and an oblique surface. The oblique surface carries a plurality of thermal resistor elements while the flat surface carries a driving element for driving the thermal resistor elements. The oblique surface is close to the surface of a recording paper positioned on a platen of a recording apparatus. A wiring pattern is provided for connecting the thermal resistor elements and the driving element.
摘要:
Plural streams of ink droplets are emitted from a nozzle, each stream comprising uniform size ink droplets. The size of ink droplets of the respective streams is different from each other. Charging electrodes are provided for each of the streams of ink droplets in order to charge the ink droplets included within the respective streams in accordance with a video signal. A selector is provided for allowing the application of the video signal to selected one of the charging electrodes associated with selected one of the streams of ink droplets in response to the size of characters desired to be printed.
摘要:
An ink liquid concentration controller is provided in an ink liquid supply system for an ink jet system printer to ensure a stable printing operation. The ink liquid concentration controller functions to maintain the concentration of the ink liquid at a constant value by supplying a volatile dilution to the ink liquid introduced into the ink liquid concentration controller.
摘要:
In an ink jet system printer of the charge amplitude controlling type, when it is desired to charge a specific ink drop being formed, the amplitude of charge for the specific ink drops is increased in accordance with the total field strength of the electric fields due to the charge amplitude of the preceding ink drops, the charge of the thus increased amplitude being supplied to the specific ink drop to thereby alleviate any charge distortion.
摘要:
In an ink jet system printer of the charge amplitude controlling type which records character patterns in, for example, a 5 .times. 7 dot matrix pattern, ink droplets not assigned to primary matrix dots are used for interpolation dots which will be deposited between two adjacent primary matrix dots on a record receiving member. The printing quality can be enhanced by provision of these interpolation dots.
摘要:
A plate shaped slim electrode is mounted on a carriage which supports an ink issuing unit and a charging tunnel, and is driven to travel in the lateral direction. A cylinder shaped rotary deflection electrode is rotatably mounted on the body of an ink jet system printer in a direction parallel to the travelling direction of the carriage. In a preferred form, a slit opening is formed in the center of the plate shaped slim electrode. The plate shaped slim electrode is maintained at the ground potential, whereas the rotary deflection electrode is connected to a high voltage source to establish a high voltage electric field between the plate shaped slim electrode and the rotary deflection electrode.