SU774974A1 - Printer - Google Patents

Description

one

This invention relates to printing devices.

A printing device is known which contains a carriage assembly, an information conversion unit associated with an actuating font carrier unit 1.

A disadvantage of the known device is the low efficiency of the printing process. 10

The aim of the invention is to increase the efficiency of the printing process.

This is achieved by the fact that the assumed device has a clock counter, a clock generator and a synchro sensor mechanically connected to the carriage assembly and a font carrier execution node, while the synchro sensor outputs are connected to the synchro pulse generator input through the synchro sync input of the synchro sensor and the synchro impulse counter. which is connected to one of the inputs of the information conversion unit.

FIG. 1 shows a portion of a drum font; FIG. 2, section A-A in FIG. one; neither fig, section bb in fig. 2; in fig. 4 - 30

The circuit diagram of the proposed device.

The device contains a drum carrier 1 / tshastichesky petals 2 with letters and magnetic carriers 3 and Tseis, electromagnet line 4, electromagnet 5, electric motor 6, carriage 7, sync sensor 8 pulses, counter 9 sync pulses, code equalization 10, control unit and the shift register 11, the power amplifiers 12, the data register 13 and the driver 14 clock pulses.

The carriage assembly has an electric motor 6 and a carriage 7.

The font carrier contains actuating elements: line 4 electromagnet and sign-5 electromagnet,

The information node has information equivalence circuit 10, a control block and a shift register 11, power amplifiers 12 and data register 13.

The device works as follows.

The position of the letter is determined by the state of the counter 9 clock pulses. The moments of selection of the magnetic carrier 3 with the letter and / therefore, the excitation of the electromagnet of the sign 5 are shifted relative to the moments of the beginning of the imprint of the excitation of the electromagnet of line 4 - by a certain interval. Consequently, the state of the counter dp of the start of excitation of the sign omagnet electr is preceded by the state of the counter to start the excitation of the electromagnet row. The state of the counter for driving the sign electromagnet enters the control unit on the shift register. The shift of the register state is made by the clock pulses of the high-speed pulse generator with a frequency exceeding the clock frequency. The state of the shift register is compared with the state of the data register storing the information of the desired character for printing.

When their codes coincide, the control unit 11 generates excitation pulses of the electromagnet of the sign 5 ,.

The excited electromagnet of the sign 5 attracts magnetic carrier 3 with the letter, and after the pulse disappears, under the action of elastic forces, the letter is output to the print zone.

The state of the counter is 9 clock pulses at. the rotation of the drum-type font 1 is changed to n positions and the code equivalence circuit 10 is compared again with the state of the data register 13, where the code of the desired symbol is also stored. When the codes are equal, the control unit 11 generates an excitation pulse of the electromagnet of line 4.

The selected magnetic carrier 3 with the letter located in the impression zone is pulled by the electromagnet of line 4, receiving additional acceleration. After the imprint on the information carrier, when the current pulse disappears in the electromagnet of line 4, the magnetic carrier 3 with the letter of elastic force returns to its original state.

The choice of the next letter is made similarly when writing its code in the register 13. The time interval from the beginning of the letter selection to the beginning of the print is determined by the state of the shift register 11 and the counter 9 clock pulses. During this time, the letter has time to get closer to the area of the print, reducing the interval from the location of the letters; at the time of selection to the print zone and the gap between the selected 5 letters and the electromagnet of line 4. The use of this device will increase the efficiency of the printing process.

Claims (1)

Invention Formula A printing device containing a carriage assembly, an information conversion unit associated with a font carrier node, characterized in that, in order to increase the efficiency of the printing process, it has a clock counter, a sync pulse generator, and a synchro sensor mechanically coupled to the carriage assembly and executive node the font carriers, while the outputs of the sync sensor through the driver of the clock pulses are connected to the input of the clock counter, the output of which is connected to one of the inputs of the conversion node ovan information. Sources of information taken into account in the examination 1, Patent of France 2347196, cl. B 41 J 1/30, 1977. BUT .i S-f .