SU1207807A1 - Printing device - Google Patents

Description

The invention relates to printing machines for printing a font and can be used in office equipment.

The purpose of the invention is to enhance the functionality by changing the printing interval.

Fig, 1 shows the device, the general view; FIG. 2 is a section A-A in FIG. 1; FIG. 3 is a section BB in FIG. 1,

The printing device consists of a rotating bearer 1, code element 2 with protrusions 3, the height of protrusions 3 corresponds to the width of the characters of letters 4, On the moving carriage 5 with drive 6 movement there is a leading tape roller 7, pressure roller 8, At the output end 9 of the tape roller 7 freely mounted leash 10 overrunning clutch with a hammer 11 at the end. The overrunning clutch is made in the form of a spring 12, tightly mounted on the cylindrical part 13 of the output end of the roller 7. The end 14 of the spring 12 is rigidly fixed on the lead 10. A second overrunning clutch is installed to meet the first overrunning clutch, which acts as a brake during the free overrun clutch. The second clutch has two stops corresponding to the selected

Toit of the spring 15, also tightly mounted on the cylindrical part 13, the end 16 of which is fixed to the carriage 5. Additional code element 17 contains the stops 18-21, the height of which corresponds to the printing interval. Code element 17 has a latch 22 and is connected by a roller 23 with a rotational drive (not shown),

The printing device operates as follows.

By turning the bearer 1, the letter 4 is set opposite

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interval, is set in the zone of action of the hammer 11. After the carriage 5 is retracted, the belts are moved to the initial position by a step in accordance with the selected interval.

Thus, by varying the height of the protrusions 3 of code element 2, the step of moving the tape changes depending on the width of the characters of letters 4, and due to the change of the height of the stops 18-21, the step of moving varies additionally depending on the printing interval.

tapes 24 of the printed material. The movement actuator 6 is turned on, and the movable carriage 5 presses the belt 24 against the letter 4, printing occurs,

At the same time, when moving the carriage 5 to the letter carrier 1, the hammer 11 of the driver 10 touches the protrusion 3. corresponding to the letter that is installed in the print zone. Upon further movement of the carriage 5, the lead 10 rotates. In this case, the lead roller 7 is locked by the spring 15, and the spring 12 slips on the cylindrical part 13. After the printing is completed, the carriage 5 moves in the opposite direction. Let the print interval be set to the height of the stop 18, then after being touched by the hammer 11 of the stop 18, the leash 10 rotates in the opposite direction.

direction. When this spring 12 turns the output end 9 at the same time with the leading roller 7, the Leading roller 7 at the same time moves the tape 24 by an amount determined by the height of the protrusion

3 and stops 18. If, during printing, it is necessary to change the interval, then after pressing the carriage 5 against the type 1 carrier, the rotational drive of the code element 17 is turned on, thereby one of its

interval, is set in the zone of action of the hammer 11. After removal of the carriage 5 to its original position, the tape moves to a step in accordance with the selected interval.

Thus, by varying the height of the protrusions 3 of code element 2, the step of moving the tape changes depending on the width of the characters of letters 4, and due to the change of the height of the stops 18-21, the step of moving varies additionally depending on the printing interval.

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VNIIPIZakaz 144/20

Circulation .363Subscription

Branch Patent,

Uzhgorod, Projecto st., 4

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Claims (1)

A PRINTING DEVICE containing a rotating letter carrier, a hard-coded code element made in the form of a wheel with protrusions of different lengths proportional to the width of the letters of the letter carrier, an onslaught mechanism, including a tape drive unit containing drive and pinch rollers placed on a carriage · mounted with the possibility reciprocating movement to the side of the letter carrier, the carriage drive for the onslaught, the hammer associated with the drive roller, and the means of restricting the progress of the hammer, incl. sistent abutment, characterized in that, in order to increase functionality by changing the printing interval, limiting means hammer stroke includes at least one additional focus and drive alternating input stops the nip, wherein the abutments are made of different height proportional to the width of the printing intervals.