JPS5985783A - Serial printer - Google Patents

Abstract

PURPOSE:To contrive to drive a motor and a printing head by the same power source and to reduce size and cost, by a method wherein a voltage impressed on a motor in a non-printing period is set to be higher than that in a printing period. CONSTITUTION:The first and second voltage-adjusting signals S1, S2 are inputted simultaneously by inputting a motor-driving signal S3, and an output voltage of a constant-voltage power source circuit 28 is set at the maximum value V3. Thereafter, when a printing region is entered, inputting of the signals S1, S2 is stopped, and the output voltage is set at the minimum value V1. When the printing region is completed, only the signal S1 is inputted, the output voltage is set at an intermediate value V2, and this condition is maintained also for a backward movement.

Description

[Detailed description of the invention] [Technical portion of the invention! IIJ-:] This invention〇, L carrier drive, paper feed and 7+? i
The printer is connected to a serial printer in which the hemming is performed by a rotary motor, the motor and the printing spatula are driven by the same power source, and the paper feed and refill feed by the motor are performed during the non-printing period.

(a+-, Ming's technical background and melting point] Conventional, ■-)
As a serial dot printer that uses a power supply to operate each part, the voltage system is driven by a drive circuit M1. There is a known type of dot head, drive motor, and voltage for driving the select solenoid Φj. The dot head and drive motor f1 (1 voltage) supplies the same 11-1 voltage from the start of the printer to the end.

By the way, the negative impact on the Jij 7 movement mode is maximum at startup, and the next largest is when paper is loaded and when feeding the ribbon.During printing, the load is the lowest (i) by simply interlocking the dot head at a constant speed. On the other hand, if we consider a box of 1Tj ramets, 1
During the 1j character, there is supply to the dot head and the jlA41iJ1 motor, so the consumption 'Ji'4.force reaches its peak.

For this reason, in the past, both the motor and the power source were selected with consideration given to the maximum part, which had the drawback of increasing the size and cost.

[Aspects of the Invention] This development was made to eliminate such drawbacks, and the purpose is to provide a serial printer that can be made smaller and lower in cost.

[U11] 1 No. Overview of J] This invention rotates carrier drive, paper feed, and hold-down.
The motor and the print head are driven by the same power supply, and the motor between the above motor number and (non-printing period before paper feeding and ribbon feeding) The application of pressure 111, the pressure during the printing period, and the application of pressure 1 (from the pressure l'il:
E 5jL.

[Embodiments of the invention]

Embodiment 1 of the present invention will be explained below with reference to the drawings.

In Figure 1, 1 is Freno, and this frame 17.
Motor 2 is 7-Kugya 3 and A-Idrubia 4.
(!: Tomo K Tori ('Jke') Letei 7+. [:l
II5 k, [・V-, rear 6 positioning grade,
7 can be rotated! r cam? l'(j 7 a t holding' tj feed arm.

8 is printed in the left to right direction in the middle of 8 v11, and is it a lead that can make a quick turn on the return trip from right to left? This lead shaft 8 has a gear 9 attached to it, and the other end is moved from above the bushing 10 by the presser plate 1] on the pace (not shown). It has been decided. The front ML carrier 6 is mounted on the lead shaft 8 so as to be able to move left and right according to the lead groove of the shaft, and the dot head 12 is mounted on the carrier 6. At the bottom, the vapor feed arm 70 cam groove 7
Pass through ao, hit record f l / F 5 Ni III I
IJ"), 11 digits '1' decision riri (not shown)
According to the position R - "determination h'J sa II".

7 out of 1? l:L-8! A feed roller 14 is provided on the -P guide and the -P guide tsVtA.

PreviousflL! Neutral roller 14 is one-way clutch F
tl' I 5*-through e 7 il:' l,
/Ha16t has been contacted. IXI Junior High School 17th! ']!
, a link connecting the IH page feed arm 7 and the E/P feed lever 16 (in particular (iI'1). 18 in the figure is a ribbon pace, and this Y3-n pace 18-1 1!, 1st d-on reel 19, 19, feeding machine Tachibana ZOP2.

Su11? 9 d? The silk feed claw z2 is embedded in silk.

Figure 2 shows the front 11 remoter 2 and the dot head 12.
1j, nIIJ! In the supply circuit, the unregulated I11 of 10,-
．． The first transistor 23 whose source is PNP ≦, the reference 'I
ji, a pressure source 24, and a resistor 25.26 J] (a well-known constant ih from an anti-divider pressure 11'1 path and a comparator 27,
The voltage is made constant by r+two power supply times %l'jz, 28. 1 of the resistor voltage divider circuit! (1 resistor 26 is connected in parallel with I7 pressure regulating circuit 29.
The j circuit 29 is formed by a parallel circuit of a series circuit of a resistor 3θ and an NPN type transistor 3] and a series circuit of a resistor 32 and a third NPN transistor 33,
The first power bar W and the first node signal SL are inputted to the second transistor 3 through the resistor 34, and the third
Transistor 330 pace 11 (Els 1 through resistor 35, 2 voltages S2 all inputs.

Maefii,', 5E? (', the output terminal (' Ic NPN type <7) of the piezoelectric power circuit 28 is connected to the motor 2 through the transistor 36 of the north 154, and
N-type transistor J 71 HJ 72 g...
- Dot head magnet coils 38+, 982 via 37n, respectively.

There is one river bordering 1...38n. A motor drive signal S3 is inputted to the transistor 36 of the transistor 21 through a resistor 39, and the transistor 37I is connected to the motor drive signal S3 through a resistor 39.

Resistance 401 to the pace of 372,...37n, respectively
Printing dot drive signals S411, S4□,...S4n are inputted through 402,...40n.

Said fourth! - The transistor 36 forms a motor drive circuit 4, and each of the transistors 37, to 37n forms a print head drive circuit 42.

When the motor 2 rotates in such a t/S configuration, the lead shaft 8 rotates, and the carrier 6 carrying 46 dot heads 12 starts moving from left to right. As a result, the wave-puff feed arm 7 moves toward the front in the figure. The upstream 4-puff feed lever 16 is connected to the link 4TJ structure 77 K.
Therefore, it moves in the same direction as the vapor feed arm 7 moves 1ilJ. At this time, the feed roller 141d and one-way clutch t'tlX151'c J...! l) l'
The J turn is stopped at 151'l. And Gearia 6 is home? If you leave the position, you will be in the fly-lint area at a certain timing. tjI L At this point, power supply to the dot head 12 is started and a printing operation is performed. After that, when the carrier 6 moves to the right and passes the 1tibL-1 printing section, the protrusion fτr368 of the gear rear 6 is located at 11!1.
engages with the bent portion 21m of the ribbon feed lever 21,
Both the trigger feed claw 22 and the trigger are moved to the right. At this time, the ribbon feeding claw 22 engages with the feeding ratchet mechanism 2o of the ribbon reel 19 on the right side in the figure by position II'J to feed the ribbon.

When the gear rear 6 finishes moving in the maximum right direction, it is reversed from right to left by the lead shaft 8 and returns at high speed. When the gear rear 6 starts to return, move the 4-puff feed arm 7 in the opposite direction during the same printing section as the forward path.
6 and one-way clutch section 15 to rotate the cypeno and feed roller 14 to feed the paper. Carrier 6Q' moves to the left, the protrusion 68 engages with the Illustrated pull part 21b of the ribbon feed lever 21, and moves the ribbon feed claw 22 to the left. Roll up Jly.

A series of such i! In a machine that performs I# operation, the load on motor 2 changes as shown in Figure 3. In other words, in the forward motion, when tit first occurs 5i)), the maximum negative ij
I is applied, printing section +)t IJ-doshaft 8'
When the Jt'r carrier 6 moves at a constant speed, the motor 2 is loaded with only the load on the one-way clutch section 15 required to move the bar feed arm 7 one heap and the negative a4Wi required to move the carrier 6. Najitto becomes 2 low.

After that, the ribbon is fed at the right end/ζ load increases temporarily. In the push motion, paper feed is involved (f; k') The load increases.

This voltage applied to the motor 2 is
As shown in the figure, the outside time is 1 minute at a time. 7〒That is, the motor, Ill<jIill I1-X No. 83 human power)
, -also nir'p, 1, El) 2 ノ'rlj,
J', IE R"<1'I:j 4+"j'4"
7 Input Rl y S 2 > i (heavy J, F,
711, output of source circuit 28? ll, set the river to maximum ■3 111) -4. After that, when entering the print 1 entry, stop inputting No. 111 SI#S2, and enter 41" power? ↑1. River J
1 Ji 1's Vl is set to -1 for. Then, when the printing section ends, only the signal S1 is input, and the output '1, 1.1-[ is set to the intermediate v2, and this earth 1, wide; is also held for the 11.j path.

When the carrier 6 is in the printing section, the motor 2 is initially driven and the carrier 6 is moved to the position 1.
．． il ni izuki ni) I sazaru yuki ni? 'Jl+141・×
1p (, as shown) [image when C is excited) It voltage i''I
The signal SL+82 is inputted to set the output voltage to V3, and then the carrier 6 is moved by using only the signal S1 and setting the tll force'ii pressure to V2.

Therefore, when selecting the electric current υ1)1 and the motor, the required value during operation is divided by the amount of electricity required during operation (υη1.
11. +H 4゛15ν' 1. Compare the power and the power consumption required when supplying the print head and motor at the same time, and choose the larger one.Please note that the voltage setting is the selected frost, ?j1] !, you just need to set the voltage that has the maximum effect within the allowable range of the motor. Therefore, the power supply,
Both motors can be made smaller than conventional models, reducing costs.
<I 〃) can come O [Koumei's moving bed] I'll explain in detail / L Yoniko (, υ IJj K,):
No Lge Y Yaria JIj<i! 1IJ1 paper feed and Osu1
? In a device in which printing is carried out using the same motor, the motor and print head are driven by the same 11 motors, and paper feeding and ribbon feeding by motor 4C is performed during non-printing periods, miniaturization and cost reduction are 1=: Accordingly, it is possible to provide a serial printer that can be used as a printer.

A, Pshi1 and simple 1p h(nψ)1 + 1. −
．． 1 This shows an embodiment of this invention, and FIG.
i'f diagram, t (Figure 12 is the circuit diagram of other parts, 2 [λ, Figure 3 shows the relationship between load change and voltage change for the operation of the floor section, timing 1 is 4, Figure 4 v, r motor FIG. 3 is a timing diagram showing voltage changes during the w-period drive of FIG.

2...Motor, 6...Carrier, 7...-Gupa feed arm, 8...Lead shaft, 12...
Dot head, 1.9... Peno f guide, 14...
・Feed roller, 15... one-way clutch section,
19... Ribbon reel, 21... Ribbon feed line, 22... Su1? Feed claw, 28... constant '1
14. Piezoelectric, source circuit, 2C... bow; 9. Pressure M! Al
t+i1 circuits 381 to 38, 1... Magnet coil for dot head, 41... Motor (1 (Nishi circuit 42
...Print head movement hi+'+.

Claims (1)

[Claims] Carrier drive, tt (paper feed and start feed are performed by the same motor, the motor and print head are driven at the same rate of 911, and the paper feed and start feed 9 are performed by the motor during the non-printing period) 1. A serial printer, characterized in that the voltage applied to the motor during the non-printing period is set higher than the voltage applied to the motor during printing J4tJ.