SU361466A1 - A CONSTRUCTIVE DEVICE - Google Patents

Description

one

A knowledge-forming device for high-speed printing is used for outputting data from electronic computers, information-logic devices and systems.

The well-known mark-forming devices on cathode-ray tubes of various types are characterized by speed, ease of control of the electron beam, and conventional CRTs are also simple. However, despite the use of high-aperture optics, “thin walls, fiber elements for projecting a sign from a CRT screen, the illumination of the photosensitive layer of a printing device (photofilm, photo paper, selenium coating, etc.) is insufficient (taking into account the afterglow), which leads to speed.

Devices for forming signs with the help of electroluminescent sign indicators, illuminated signs, etc. also have low speed.

With the matrix method of forming characters using a CRT (this method is most promising for forming characters using a CRT), the electron beam successively passes all mpe points that are one character (character matrix), where t is the number of points in the column, a / g the number of points in the row of the matrix of the sign.

The proposed device forms a sign by the matrix method, but in a parallel-sequential action with the help of m Simultaneously acting and independent of each other Light rays, controlled by brightness and direction. The most m, with the same illumination, it acts t times (almost 5-10) faster than a CRT.

In addition, in the proposed mark-forming device, an independent light source is used, which makes it possible, if necessary, to increase the illumination of the photosensitive layer of the printing device.

FIG. 1 shows the relative position of the elements of the device forming the mark.

From a source of continuous monochromatic light / plane-polarized light 2 passes through a block 3 of rotation of the plane of polarization of light, an analyzer of polarization of light 4j objective 5 and, reflecting from a rotating polyhedral mirror 6, is directed to a photoreactive layer of a printing device (not shown) . The control signals to the input 7 of the element 3, which is the input of the sign-forming device, come from a matrix electronic unit (not shown) of the control.

Pa figs. 2 shows a plane rotation unit.

polarization of light in the form of a ruler of electron-optical keys for cases 7.

As an electron-optical key, a Pokels cell on a KTao.GsNbo.ssOs crystal (KTN for short) is used, shown in FIG. 3

The Pokels cell on a KTN crystal is a bar 9 covered with a thin layer of metal 10 to create an electric field in the crystal.

For electrical contact with the electrodes 10, terminals 1 are used, which are mounted on the walls of the casing 12 of insulating material. The electrodes of the 10 neighboring cells are separated (voltages on the order of 20 volts) by the insulating layer 13.

Analyzer 4 has an aperture of at least the aperture of the rotator 3 for passing all t parallel light channels.

FIG. Figure 4 shows the electrical connection of the Pokels cells 14 to the output shapers 15 of the electronic matrix control unit. The voltage levels t / i and Uz of the control signal depend on the size of the CT crystal of the Pokels cell.

On fig. 5 shows patterns of marks formed with the help of a sign-forming device, for the case / l 7.

The forming device operates as follows.

Using a Pokels controllable cell and a polarization analyzer, the light passing through them can be controlled. When the t / i level is applied to the Pokels cell, which serves as the offset of the operating point of the CC1I, the direction of polarization of the light emanating from the cell coincides with the direction of polarization of the light entering the cell, and the analyzer 4 does not transmit light. Conversely, at f / 2 level, the light passing through the Pokels cell changes the direction of polarization by 90 °, and the analyzer completely transmits light with such a polarization.

Since all PG pokels of the block 3 are controlled independently of each other, the output of the analyzer 4 is formed by controlled light beams independently of the brightness. They make up the column matrix point points of the mark after being projected by lens 5 onto the photo-registration layer. The mark is formed using m columns per n clock cycles (/ pX / g points) specified by the control unit. In each control cycle, the binary code of one given column is sent in parallel. In accordance with this, the drivers 15 issue control levels (a combination of f / j and Uz), thereby locking those

light channels, which correspond to those points in this column. Control signals from the formers to the Pokels cells are provided through inputs 7.

A rotating mirror 6 creates a horizontal scan of the light.

The speed of rotation of the mirror, the frequency of the clock pulses of the control unit and the duration of the level 172 are mutually consistent, thus providing temporary and spatial separation of the columns. These parameters determine the speed of the sign formation.

Subject invention

Actuator that contains a light source and a lens mounted sequentially on the same optical axis

and a multifaceted mirror for scanning the light beam, characterized in that, in order to increase the speed of the device, sequentially installed rotation units of the light polarization plane are inserted in the form of a line of electrically-sensitive keys, for example Pokels cells, and an analyzer optically connected to the source light and lens.

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