SU437115A1 - Printing device - Google Patents

Description

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The invention relates to computing.

Known printing devices include a register connected via a key circuit to a decoder, typical levers with typical lever sensors and non-contact sensors connected to the decoder.

However, in such devices there is no automatic control of the operation of the printhead and its node.

 To improve accuracy, the proposed device contains an encoder connected to sensors of typical levers, key circuits connected to a register, a print sensor and an encoder, a comparison circuit connected to the outputs of key circuits, an assembly diagram connected to a comparison circuit and a register.

FIG. 1 shows a block diagram of the proposed device; in fig. 2 - location of sensors in the device.

The device contains a register 1, key circuits 2, a decoder 3, tin levers 4 with sensors 5, an encoder 6, key circuits 7 and 8, a comparison circuit 9, an assembly 10, a sensor 11, a roller 12.

In accordance with the incoming printing apparatus of the original symbol combination, select the type lever 4 with the corresponding symbol. As soon as the lever begins to work out the control action, its sensor 5 signals that the lever has left the initial position. When a typical lever hits the platen 12, the sensor 11 signals the completion of a typical control lever.

A binary character combination (letter, digit, character) is written to register 1 and passes through key circuit 2 to decoder 3, which selects the corresponding sample lever 4. At the same time, sensor 5 is turned on, the signal from which drives the encoder bus 6. At the output of the latter, a character combination is received corresponding to the sensor of the typical lever 4. At the moment of impact of the typical lever on the paper tape, the sensor of the second seal is turned on. A signal is generated that permits the combinations of the character from the bis register 1 encoder through the key circuits 7 and 8 to pass to the comparison circuit 9. Next, the two combinations are compared, the signal "Norm or Not Norm." At the same time, through assembly circuit 10, the signal goes to register 1 and sets it to its initial state.

Prede n Invention

A printing device containing a register of a hyster connected via a key circuit

to the decoder, typical levers with and print sensors connected to an encoder, characterized in that, in order to improve the accuracy of the device, it contains an encoder connected to sensors of typical levers, key circuits connected to a register, a print sensor and an encoder, a scheme a comparison connected to the outputs of the key circuits, an assembly circuit connected to the comparison circuit and the register.

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