JPS6312795B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a recording apparatus, and more particularly to a recording apparatus that records a dot pattern by moving a horizontally movable carriage in one direction.

[Prior Art] Conventionally, for example, Japanese Patent Laid-Open No. 51-16113 discloses a technique for moving a printing head at high speed. This publication describes that paper feeding and return movement of the print head along the print line after printing are started simultaneously.

However, this only discloses a technology that uses a large motor to move the carriage at high speed to reduce the impact when it returns to its original position, and the next printing after returning to its original position is only possible after paper feeding has finished. Since this is not possible, the paper feeding motor inevitably has to be large and expensive in order to feed the paper at high speed.

Therefore, by providing a low-cost and compact drive source, we can deal with the lag between the end of paper feeding and the end of carriage movement depending on each case, improve the overall recording speed, and further improve the ability to move the carriage at a certain position. Even when holding, it was impossible to expect the apparatus of the present invention to be able to hold the dots with high accuracy and record a pattern of high quality dots.

[Objective] In view of the above-mentioned drawbacks, it is an object of the present invention to provide a recording device that allows the use of an inexpensive and small-sized feeding source and that can also improve the overall processing speed.

In view of the above points, the present invention provides a recording device using a carriage capable of reciprocating in the horizontal direction, and which, after completion of the first reciprocating recording, prepares for the next second reciprocating recording. A record that improves the overall printing speed by performing the carriage movement and paper feed in parallel, and by dealing with the lag between the end of the carriage movement and the end of the paper feed according to each case. The purpose is to provide equipment.

In view of the above points, the present invention provides a moving means capable of reciprocating a carriage in a horizontal direction, a feeding means for feeding paper in a vertical direction, and a moving means capable of reciprocating a carriage in a horizontal direction; A device for recording using a head mounted on a recording device, which comprises a storage means for storing data related to recording, a pattern generation means for generating a pattern to be recorded based on data from the storage means, and a pattern generation means for generating a pattern to be recorded based on the data from the storage means. In order to record a pattern, there is provided a control means for controlling the driving of the moving means and the feeding means, and the control means determines whether or not the first forward recording is completed, and If it is determined that the first forward recording has ended, the carriage is moved to the position to start the next second forward recording, and the paper is fed a predetermined amount in parallel, and the carriage is placed at the position. If the paper feeding has finished when the paper reaches the position, the forward movement of the carriage is immediately started to perform the second forward movement recording, and the paper feeding has not finished when the carriage reaches the position. In this case, it is an object of the present invention to provide a recording device capable of controlling the moving means so as to hold the carriage at the position.

[Examples] Examples of the present invention will be described in detail below with reference to the drawings.

(Configuration of Carriage) A recording apparatus according to an embodiment of the present invention will be explained with reference to FIGS. 1 and 2. FIG. A recording head, for example a carriage CA having four ink jet nozzles N1 to N4, is driven by a linear motor. Linear motor has permanent magnet PM, magnetic plate Y
1. A coil bobbin CB that forms a closed magnetic circuit with the members of the magnetic sliding shaft Y2 and is capable of sliding on the sliding shaft Y2.
A current is applied to the coil C wound around the coil C, and according to Fleming's left hand rule, the carriage CA, which is integrated with the coil bobbin CB, is driven. The reciprocating motion of the carriage on the sliding axis Y2 is achieved by changing the direction of the current flowing through the coil C. A scale plate, for example a slit plate OS made of a non-magnetic material, is fixed perpendicularly to the magnetic plate Y1 together with the sliding axis Y2. A coil bobbin CB of a coil C, a sub-tank ST that supplies ink to the inkjet nozzles N1 to N4 and N1 to N4, light emitting and receiving elements such as a phototransistor PT, a photodiode LE, and a flexible wiring board FL are fixed to the carriage CA. Furthermore, a shielding plate SB that blocks the photodiode LB at the home position and the phototransistor PB is integrated. One terminal FL1 of the flexible wiring board FL has terminals C1 and C2 of the coil C, and inkjet nozzles N1 to N4.
The piezo terminal (not shown) that is the drive source of the , the terminal LET of the photodiode LE, and the phototransistor PT
The terminal PTT of is electrically and mechanically connected. The other end FL2 of the flexible cable FL is fixed together with the ink supply tube T1 by a holding plate P. The ink supply pipe T1 is guided rearward by using a magnetically necessary air gap between the permanent magnet PM and the magnetic plate Y1, and the main tank MT is connected to the rear end thereof to supply ink to the sub tank ST.

(Status of carriage movement) The slit plate OS is arranged perpendicularly to the recording head N between the photodiode LE and the phototransistor PT. This saves space and
Becomes smaller. As the carriage CA moves, the infrared light emitted from the photodiode LE is transmitted to the slit section.
The phototransistor PT is turned on and off by the receiving slit QS, which has a slit of the same pitch as SS and is attached to the light receiving part of the phototransistor PT.
By repeating OFF, a timing pulse TP is generated as shown in FIG. 3B. This timing pulse TP detects the speed and position of the carriage CA during carriage scanning, and controls the speed, inkjet nozzle, and paper feed pulse motor SP. In addition, as the carriage CA moves, the shield plate SB also moves, causing the phototransistor PB at the home position to also move.
Turns ON and OFF to indicate the presence or absence of the carriage at the home position. When printing one line, the characters are composed of a dot matrix, and the carriage CA starts scanning according to the print command signal, detects the position using the timing pulse TP, and at the predetermined position, the piezoelectric sensor of each inkjet nozzle N1 to N4 is activated. eject an ink droplet by applying a voltage to
Four dot lines are printed on the recording paper PP shown in Figure 3A. When printing of the 4-dot line is completed, the paper feed pulse motor SP is rotated by 4 dots, and at the same time, the carriage CA is returned to the home position. Confirmation of the home position is performed by phototransistor PB. For paper feeding, the rotation of the pulse motor SP is transmitted at a reduced speed through a motor shaft gear (not shown) through gears G1 and G2. The final stage gear G2 is fixed to the shaft of the platen PL, and is capable of feeding a predetermined amount of paper in the row direction. This operation is repeated, and when printing of a predetermined dot line (for example, 7 lines) in the row direction is completed, the platen PL is rotated by a predetermined amount including the line spacing by the pulse motor SP, and printing of one line is completed.
Cap the inkjet nozzle N after printing is completed.
Move to the KP position and stop. This can prevent clogging, drying, meniscus regression, etc. of the inkjet nozzle.

D1 and D2 are collision dampers made of foam or the like, which soften the collision of the carriage CA, and prevent ink from leaking from the nozzle and meniscus from retreating.
Furthermore, since the sub-tank SP is arranged so as not to come into direct contact with Y1, D1, etc., almost no impact force is transmitted, and there is little foaming inside the sub-tank.

In addition, since a rotary motor is not used to drive the carriage, gears, links, racks, etc. are unnecessary.
Furthermore, since a ratchet, plunger, etc. are not used for paper feeding, an extremely quiet recording apparatus can be constructed.
In particular, since the scale plate is arranged vertically, dust, paper scraps, etc. do not get on it, and there is no bending compared to when it is arranged horizontally, and the movement resistance of the carriage is reduced.

In addition, the sub-tank and the end of the flexible wiring board are placed on the carriage, and various electrical parts are connected to this, making it easy and inexpensive to manufacture.Furthermore, the flexible wiring board allows for free movement. Since the ink supply pipe to the sub-tank is locked at one place, it can have various features such as simplicity.

In this example device, the scale plate OS is slit SS.
is provided as shown in FIG. 3A, and serves both for position confirmation control and speed constant control.

In other words, the slit SS is the printing paper PP as shown in Figure 3A.
The speed is adjusted until the carriage CA starts moving from the initial position HO and counts, for example, 8 slits SS, and when 8 slits are counted, printing of one digit is started, 8 to 12 5
The printing of one digit is completed with the slit, and the two slits 13 and 14 are left blank with the adjacent digits, and this process is repeated thereafter. AS is an approach slit for detecting the printing start position, CS is a character slit, and BS is a blank slit.These slits and their spacing are used to keep the carriage moving speed constant.

Also, the carriage CA starts moving from the home position, and the phototransistor PB signal changes from OFF to ON.
Considering the variations in the position and speed, a shielding part for several slits is provided at the position where the It also has a two-value power supply voltage for driving the linear motor, and during normal printing operation, it is driven at the normal voltage and always
When the carriage is pressed to the right end, the voltage is switched to lower than the normal voltage. In other words, when the power is turned on, the cartridge
Drive CA in the BACK direction (toward the right end in Figure 1), and when it is confirmed that the carriage CA has moved to the home position by the output signal from the phototransistor PB, switch the motor drive voltage to a low voltage. , reduce the carriage speed, press it against the damper D1, and fix the carriage CA at the position of the cap KP section. Naturally, if the carriage CA has already been in the home position, the motor drive voltage is immediately switched to a low voltage, and the recording head enters the standby state. In addition, after printing one line, the carriage
When it is confirmed that the CA has moved in the BACK direction and has arrived at the home position, switch the motor drive voltage to a low voltage and press it against the damper D1 to fix the carriage CA position, and carry out the protection and forced suction as described above. to ensure that the nozzle can recover properly.

(Control circuit) Figure 4 shows an example of the control circuit of this device, and the lead wires FF, FB, FV, FT, FP1 to FP4, and FE are integrated as shown as the flexible wiring board FL in Figure 1. formed to facilitate movement of the carriage CA. In FIG. 4, when the power is turned on to the device, the control unit CC sets the signal line 12 to O for a certain period of time, flips the flip-flop F1, and the speed control unit
The SC is reset, the counter 5C is set to the initial value, and the print digit counter PC is passed through the gate AR.
Shift register 4SR, 8SR, 12SR counter 10C, flip-flop F2, TP separation circuit
Clear TB, set signal line luD to 1, signal line _l14 to 1
As a result, gate A ₁₄ is opened, and gate A _10c is closed via inverter i ₁₄ . Further, the power supply voltage switching signal line lsv is set to O, the transistor TRS is turned off, the motor drive voltage is applied to the normal voltage, and the carriage CA is moved to the home position. This sets the coil drive signal output line lF to 0 and lB to 1 to drive the carriage CA in the BACK direction, that is, in the home position direction.

After driving in the BACK direction, the control unit CC detects whether the carriage CA is at the home position using the signal line lTR indicating the home position.

If the carriage CA is not at the home position, it moves to the home position while controlling the speed by driving in the BACK direction.
The shielding plate SB, which is integrated with the carriage CA, turns off the phototransistor PB, which was turned on by the photodiode LB (from 0 to 1). This signal is amplified by the amplifier circuit AP2 through the signal line lTR,
Its output signal line lBC allows control section CC
detects that the carriage CA is in the home position.

In response to this, CC changes the signal line lsv from 0 to 1, turns on the transistor TRS, and shortens the voltage of the Zener diode ZD2. As a result, the voltage supplied to the motor driver section MD
Switch LMV to low voltage and connect motor drive signal line
With lF and lB set to 0 and 1, the carriage
Push CA to the right edge.

By switching to this low voltage, it is possible to reduce heat generation and power consumption of the coil.

In addition, if the carriage CA is in the home position from the initial state, the phototransistor
Since PB is in the OFF state (state 1), the motor drive voltage is instantly changed to a low voltage as described above, and the motor is pressed against the rightmost foam D1. Now, the information to be printed in the print character memory CM is stored from the keyboard KB via the arithmetic unit ALT.
When the flip-flop F1 is set by the print command PO in FIG. 5A, the control section CC is put into the printing operation state by the set output signal line l1
The signal line 12 is set to 0 for a certain period of time, the flip-flop F1 and the speed control section SC are reset, the counter 5C is set to the initial value, and the print digit number counter PC, shift register, 4SR, 8 is set via the gate AR.
Clear SR, 10SR, counter 10C, flip-flop F2, and TP separation circuit TB. Also,
Set the signal line luD to 1, _l14 to 1, open gate _A14 ,
Close gate A _10c through inverter i ₁₄ , signal line
Set lsv from 1 to 0, turn off transistor TRS, and set motor drive voltage LMV to normal voltage. Then, set the signal line l4 to 1, open the gate AC,
Print digit number counter PC and print digit number storage register PR
(hereinafter referred to as the print digit register PR), the output of which a match is found in the matching circuit C0 is detected by the signal line 15 through the gate AC. If they do not match, set the signal line lF to 1 and lB to 0, drive the coil C with the driver MD, and turn the carriage CA.
Move it in the FORWARD direction and print.

Now, if the content of the print digit counter PC is 0 and the content of the print digit register PR is n digits, the coincidence circuit CC outputs a mismatch signal, and the control unit CC detects this and performs the above drive. Let's do it.

As the carriage CA moves in the FORWARD direction, the shielding plate SB integrated with the carriage CA connects the photodiode LB and the phototransistor.
Move from between PB and finally photodiode LB
and phototransistor PB, and phototransistor PB changes from OFF to ON (1→0). When phototransistor PB turns on, the signal line
lBC becomes 0 and gate is passed through inverter ITR.
Enter into AT. In addition, the detection units LE and PT mounted on the carriage CA move the slit plate OS as the carriage CA moves, and a slit detection signal is input through the signal line FT, which is amplified by the amplifier AP1, and the timing pulse TP is sent to the signal line FT. Output to lTP.

This TP is input to the gate AT, which is input with the signal line lF=1, but the input signal line of the gate AT via the other inverter ITR is connected to the shield plate SB, which is integrated with the carriage CA, and the photodiode LB and the phototransistor. 1 when it comes out from between PB
, and after that point the gate opens and the TP isolation circuit
Enter in TB.

The input TP signal is separated by the TP separation circuit TB into 5 pulse signals TD1 to TDn for outputting print data for each digit as shown in Figure 5B, and then connected to the signal line.
It is input to the counter 5C and gates CA1 to CA7 through the AND gate _A14 , which is opened by _l14 ,
The output of counter 5C is character energizer CG
→ Enter.

Here, the number of digits to be printed in one line is stored in advance in the print digit register PR, and the character digits to be printed are counted by the print digit counter PC, and the decoder DC receives the output from the print character memory CM.
Select the content.

The selected content is controlled by the output control of the counter 5C, and the selected content is determined by the output control of the counter 5C.
The dots are output as print data signals from the character generator CG.

Now move the motor in the FORWARD direction,
When the TP signal is obtained and the first 1 pulse signal of 5 pulses is output to the signal line _l06 through the TP separation circuit TB, the counter 5C is increased by 1 from the initial value and the first column from the character generator CG is output. Print data of 7 dots is output to signal lines _l91 to _l97 and input to AND gates CA1 to CA7. Also, gate CA1
Since the signal line 106 is input to the other input of ~CA7, data is input only when the 5-pulse signal is output, and is 0 otherwise. Also, gate CA1
~The other input of CA7 is the control CC
The signal line luD is input from. This signal line
luD normally outputs 1.

In addition, from the TP separation circuit TB, the TP signal is passed through a delay circuit and then outputted to the signal TP′ signal line _l12 .
It is input as a 4-bit, 8-bit, 12-bit shift register, 4SR, 8SR, and 12SR clock. Also, the signal line _l12 is 1 from the start of printing.
After being ANDed with the signal line _l13 , it is also input to the strobe signal generation circuit SCR, from which the strobe signal is output to the signal line lSR. This results in
Of the 7 dots of data output from the character generator CG, the data for 1 to 4 dots of the AND gates CA1 to CA4 whose signal line luD is open by 1 is output, and the data for 1 to 4 dots of the AND gates CA1 to CA4, which are opened by the signal line luD, is output to the OR gates CO1 to CO4.
The data of the 1st dot is directly input to the AND gate SD1, the data of the 2nd dot is input to the 4-bit shift register 4SR, the data of the 3rd dot is input to the 8-bit shift register 8SR,
The data of the fourth dot is input to the 12-bit shift register. And the output of each shift register is
Input to AND gates SD2 to SD4.

These shift registers 4SR, 8SR, 12SR are
Since the four ink jet nozzles N1 to N4 are arranged with four slits apart due to the size of the nozzles, as shown in FIG. 3C, they are provided to shift the ejection data.

To explain the above operation in terms of timing, TP
When the first pulse is output to the signal line l06 by the 5-pulse signal from the separation circuit TB,
It is input to AND gates CA1 to CA7, and the signal 1
The time gate opens, passes through OR gates CO1 to CO4, AND gate SD1, shift register 4SR,
Input to 8SR and 12SR.

Since the counter 5C is incremented by 1 and print data is output from the character generator, the signal line l
At the beginning when the signal of 06 becomes 1, AND
The output of gates CA1 to CA4 is the previous data, but after that, the output is from the character generator.
Print data from CG is output. In addition, the signal TP' on the signal line _l12 , which is used as a clock for the shift registers 4SR, 8SR, and 12SR, passes through a delay circuit, so it is output later than the 5-pulse signal on the signal line l06, as shown in Figure 6B. To do this, print data is taken into shift registers 4SR, 8SR, and 12SR. Then, the gates SD1 to SD4 are controlled by the strobe signal lsR, which is output in response to the output signal line lis which is ANDed with the signal line _l13 and the signal line _l12 .
opens, inputs it to the pulse width setting circuits DS1 to DS4, outputs a constant pulse width to the output lines _l21 to _l24 , drives the piezo drivers PD1 to PD4, and selectively operates the piezo drivers PZ1 to PZ4. , print is achieved by selectively ejecting ink droplets. It is also input to the gate _A10 , but it is closed by the signal line _l14 , so the counter 10C does not operate.

The data output from each shift register 4SR, 8SR, and 12SR is output from the signal line _l12 (TP' signal) used as a clock input as the carriage moves, so data is taken into each shift register during carriage operation. However, before the 5-pulse signal from the TP separation circuit TB is output (before printing starts), the signal line l6 of AND gates CA1 to CA7 is closed by 0, and 0 is input as data. After printing starts, gates SD1 to SD4 are opened for each TP' signal by the strobe signal of the TP' signal via the AND gate Ais, and data is output and printed, but the 2nd, 3rd, and 4th dots are At first, the data between 4 dots, 8 dots, and 12 dots is not output because the data is 0, and the carriage CA
As the data moves, the data in the shift register is shifted, outputted, and then printed.

The TP separation circuit TB in FIG. 4 includes a delay circuit D, counters K1 and K, as shown in FIG. 6A, for example.
2, JK flip-flops JF1, JF2, AND gates G1 to G7, NAND gates N1, N2, and inverters 11, 12 are configured as shown in the figure, and their operation is shown in the timing chart of FIG. 6B. Predetermined TD1 to TDn in l6
A signal is generated.

In the above case, one of the five vertical columns of the 5x7 dot matrix for the first digit of the printing digits in one row.
This is an explanation of the printing of the 4 dots above the 7 dots in the column, and when the printing of the 4 dots in the 1st column of the 1st digit is completed (dots 2 to 4 are not printed because the data is in the shift register). , the counter 5C is set to +1 by the second pulse of the five pulses on the signal line l06.
Then, the 7 dots in the second column of the 5×7 dot matrix from the next character generator are printed by the same operation as above, and the counter 5C is incremented by 1 by each of the following 3 to 5 pulses. 5×7
Print data from the third to fifth columns of the dot matrix is output and also taken into the shift register.

The control unit CC detects the end of the signal output of these 5 pulses through the signal line l11, outputs a signal to the signal line l7, increments the print digit counter PC by 1, and
Counter 5C is set to the initial value via inverter i5C. Then, in the same way as above, the contents of the print digit register PR and the print digit number counter PC are matched to the circuit.
The CO detects a match and outputs the result to the signal line l4 by opening the gate AC and outputting it to the signal line l5. If the control unit CC detects a mismatch, the output is printed with the number of digits added to the print digit counter PC by 1. The characters in the character memory CM are printed using a 5-pulse signal (TD2) from the TP separation circuit TB.

Furthermore, while the control unit CC detects the end of the 5-pulse TD1 signal through the signal line l11, each shift register receives the signal line l11 which is the clock input.
12, the data that becomes 0 when signal line l6=0 is taken into the shift register, and the strobe signal from the strobe signal generation circuit SCR is used.
Printout is performed.

For the first dot of the 1 to 4 dots to be printed, this is the character interval of 2 slits (blank slit BS), and for the 2 to 4 dots, the data in the shift register is printed. .

Since the operating clock of the circuit is sufficiently fast with respect to TP, the operation time from +1 of the print digit number counter to memory readout and input to the character generator can be sufficiently executed before the next 5 pulses. In this way, selective printing of five dots each in the first row and first row is performed using the signals TD3, TD4 to TDn. When the contents of the print digit number counter PC and the print digit register PR match in printing one line, the control unit CC sets the signal line l4 to 1 and opens the gate AC, and when the match is detected by the signal line l5, The signal line l ₁₄ is changed from 1 to 0, the gate A ₁₄ is closed, and the output from the character generator CG is set to 0. And even more
Printing is executed by shifting the shift registers 4SR, 8SR, and 12SR by outputting the TP signal as CA moves, and by using the strobe signal.This strobe signal is input to the counter 10C, Output the remaining 10 TP of data.

When the counter 10C counts 10 TP's, the signal line lE becomes 1, which not only transmits the completion of printing to the control unit CC but also inputs it to the gate AF.

Since the signal line lE becomes 1, the control unit CC sets the signal line _l15 to 1, opens the gate AEN, and outputs the output signal line lEND of the flip-flop F2.
is detected, but the other input line of gate AF is
The signal line lUD is passed through the inverter iUD, and since the signal line lUD is 1, the gate AF is closed, the flip-flop F2 is not set, and the signal line lEND remains at 0.

As a result, the control unit CC detects that only the upper four dots of the 5×7 dot matrix have been printed from the above-mentioned printing, and sets the signal line lUD to 0 and sets the gate for printing the lower three dots.
Open CA5 to CA7 and gate AF, return signal line l ₁₄ from 0 to 1, open gate A ₁₄ , and
Close A _10c . Then, the signal line l8 is
Drives the driver PFD as
PC and TP separation circuit TB, shift register 4SR,
Clear 8SR, 12SR, counter 10C, and flip-flop F2 via gate AR, and
Set counter 5C to its initial value.

Then, the signal line IF is set to 0 and the signal line LB is set to 1 to drive the carriage in the BACK direction. Note that the operation of driving the driver PFD using the signal line l8 to execute paper feeding and the operation of returning the carriage CA to the home position are performed in parallel. By driving in the BACK direction, the carriage CA moves to the home position while its speed is controlled, and the phototransistor PB, which was turned ON by the photodiode LB, is turned OFF (from 0 to 1) by the shielding plate SB integrated with the carriage CA. ), and the control section CC detects that the carriage CA has returned to the home position section by passing the signal line lTR through the amplifier circuit AP2 and the signal line lBC. At this time, the control unit CC compares the contents of the reference digit register KPR and the contents of the print digit storage register PR by the comparator circuit CMP and checks the output signal line _lH , and if the signal line _lH is O,
5th if the number of printed digits is the same as or more than the standard number of digits.
As shown in Figure C, it is detected that the paper feeding is completed before the carriage CA moves to the home position, and the signal line LF is set to 1, and the signal line LB is set to 0, and the motor is immediately started in the FORWARD direction from the state where the paper bounces off the damper D1. 5×7 by the signal line l _END as described above.
Since only the top four dot lines of the dot matrix have been printed, the next stage (5 to 7 dot lines) is printed. Also, the signal line
l If _H is 1, if the number of printed digits is less than the standard number of digits, it is detected that paper feeding has not been completed by the time the carriage CA moves to the home position as shown in Figure 5D, and the control unit CC sets the signal line _lSV to 1, turns on the transistor TRS, lowers the motor drive voltage, and sets the motor drive signal to the carriage CA with the signal line lF set to 0 and lB set to 1.
Push the paper to the right edge and press the carriage until the paper feed is finished.
CA is temporarily put on standby, and when the control unit CC detects that the paper feed signal has ended, the motor drive signal IF is set to 1 and LB is set to 0, and the next stage of printing is executed in the same manner as described above.

Note that when the carriage CA is driven in the BACK direction, the signal line lF is 0, so the gate
AT is closed, no TP signal is input to the TP separation circuit TB, and no printing is performed when returning.

Now, the content of the print digit number counter is 0, the counter 5C is also set to its initial value, each shift register 4SR, 8SR, and 12SR is also reset, the signal line _l14 is set to 1, and the signal line _lUD is set to 1. 5 for 0
The lower 3rd row in the ×7 dot matrix is specified, and the signal line LF is set to 1 and the signal line LB is set to 0 to FORWARD the carriage CA, similar to the printing of the upper 4 rows above.
move in the direction. Also, since the signal line lF=1, the gate
Open 1 input of AT.

As the carriage CA is driven in the FORWARD direction, the shield plate SB, which is integrated with the carriage CA as described above, connects the photodiode LB and the phototransistor.
The signal line escapes from between PB and passes through the amplifier circuit AP2 of the output signal line lTR of the phototransistor PB.
When lBC changes from 1 to 0, it is input to the gate AT via the inverter ITR, the gate AT is opened, and as the carriage CA moves, the signals optically detected by the detection units LE and PT are passed through the signal line through the amplifier circuit AP1.
The timing pulse TP output to lTP is gated to AT
input to the TD separation circuit TB via. The TP separation circuit TB separates the input TP signal into TP separation signals TD1 to TDn of every five pulses.

Then, as above, the counter 5C is activated by the 5-pulse signal, and its output is used by the decoder.
The first digit character output by the print character register CM selected via DC is output from the character generator CG, and gates CA1 to
The data is input to CA7, but this time, 5 to 7 dots in one column of the 5×7 dot matrix become print data from the gates CA5 to CA7, which are open because the signal line l _UD =0. And the 5th dot is directly gate SD1
The 6th and 7th dots are input to shift registers 4SR and 8SR from signal line _l12 . Note that although 0 is input to the shift register 12SR, it does not affect printing. Then, the gate SD1 is activated by the strobe signal output from the strobe signal generation circuit SCR in response to the output signal line lis which is ANDed with the signal line _l13 and the signal line _l12 , which becomes 1 from the start of printing.
~SD4 opens, pulse width setting circuit DS1~DS4
and input the driver PZ1 to PZ for a certain period of time.
3 to output the signal of the lower 3 dots of the 1st column of the 5x7 dot matrix of the 1st digit character, and then print the data in the shift register due to the subsequent movement of the carriage to print the lower 3 dots of the 1st digit. Achieve printing.

After that, print 5×7 in the same way as printing the upper 4 dots.
Executes for the lower three dots of the dot matrix for the number of digits to be printed. Then, when the control section CC detects the completion of outputting the lower three dots of print data by the coincidence circuit C0, as described above, the signal line _l14 is changed from 1 to 0, the gate _A14 is closed, the gate _A10c is opened, and the carriage CA By moving , the data remaining in the shift register is printed. Then, the output signal line lE of the counter 10C, which was counting the remaining data, becomes 1, transmitting the printing completion state to the control unit CC, and also inputting it to the gate AF. Gate
AF is input from the signal line l _UD =0 via the inverter i _UD and is open, setting the flip-flop F2. After the signal line lE becomes 1, the control unit CC sets the signal line _l15 to 1 and opens the gate _AEN .
The state of flip-flop F2 is detected, and this time it is set, and it is detected that printing up to the seventh row of the 5×7 dot matrix has been completed. Then, the signal line _l14 is returned from 0 to 1, the gate _A14 is opened, the gate _A10c is closed, and the signal line l8 is set to 1 for a certain period of time to drive the driver PFD, and the paper sheet for 7 dot lines including the line spacing is Perform Eid. At this time, the print digit number counter, shift registers 4SR, 8SR, 12SR, counter 10c, flip-flop F2, and TP separation circuit TB are cleared, and the counter 5c is also set to its initial value.
In addition, the control section CC is connected to the signal line lF as above.
is set to 0 and lB to 1, the carriage CA is moved in reverse, and the signal line lBC is driven until the output of the phototransistor PB changes from 0 to 1.
Return to the home position and finish printing one line. Note that, as described above, the return of the paper feed and the carriage CA to the home position is performed in parallel. When the carriage CA returns to the home position, the control unit CC checks the output signal line l1 of the flip-flop F1, and determines whether the next print command has been received based on whether the signal is 1 or 0. If the output signal line l1 is 1, it is detected that continuous printing is being performed due to the print command for the next line being received, the signal line lB is set to 0, the motor drive is stopped, and the printing operation is the same as the previous line. Then, the signal line l2 is set to 0 for a certain period of time, and the flip-flop F
1. Reset the speed control section SC and clear the print digit counter PC, TP separation circuit TB, shift registers 4SR, 8SR, 12SR, counter 10C, and flip-flop F2 via gate AR. Also, set the signal line l _UD to 1 and the signal line l ₁₄ to 1 and set the gate
Open A ₁₄ and close gate A _10c . Then, set signal line l4 to 1, open gate AC, and match the contents of print digit number counter PC and print digit register PR to match circuit C.
A match is made with 0, and the same printing as above is executed. Also, the output signal line l1 of flip-flop F1
If is 0, the control unit CC detects that there is no next print command, sets the signal line lSV to 1, turns on the transistor TRS, and lowers the motor drive voltage to a low voltage, and the motor drive signal changes the signal line lF to 0,
Keeping lB = 1, press the carriage CA to the right edge in the same way as waiting for paper feeding to finish when changing from 4-dot line printing to 3-dot line printing when the number of printing digits is short, and keep the carriage CA position until the next print command comes. to be fixed.

As mentioned above, when the printing digits are short, the carriage can be temporarily parked at the home position to prevent the carriage from bouncing back, thereby eliminating the time needed to change direction and travel time to reach the home position. When the printing digit is long, the overall printing speed can be improved by immediately driving the printer in the FORWARD direction from the home position without performing unnecessary operations.

In addition, when the printing digits are short, the voltage is lowered when driving in the BACK direction at the home position.
This prevents the coil from generating heat and reduces power consumption.

[Effects] As described in detail above, according to the present invention, a dot pattern can be recorded while moving a carriage that can reciprocate horizontally in one direction, and after the first forward recording is completed, the next recording is performed. By performing the carriage movement and paper feed in parallel to prepare for the second forward movement record, and dealing with the difference between the end of the carriage movement and the end of the paper feed according to each case, It has become possible to provide a recording device that can improve the overall recording speed.

As detailed above, according to the present invention, the first
Carriage movement and paper feed are performed in parallel after the end of the first forward movement recording, and if the paper feed has finished when the carriage movement ends, the carriage is immediately moved for the next second forward movement recording. If the paper feed is not finished when the carriage starts moving and the carriage finishes moving, the carriage is held at that position with high precision, and the above-mentioned end is determined based on the relationship between the paper feed amount and recording length, etc. Since the time lag can be optimally controlled depending on each case, it is possible to output a particularly high-quality dot pattern, and the overall recording speed can always be improved.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of one embodiment of the present invention, Fig. 2 is a sectional view thereof, Figs. 3A and B are enlarged views of the scale plate, and C
4 is a diagram showing the relationship between the scale plate and the nozzle position, FIG. 4 is an example of the control block, FIG. 5 A, B, C, and D are waveform diagrams for explaining the printing operation, and FIG. 6 A is a part of FIG. A detailed circuit example diagram, FIG. 6B, is a waveform diagram illustrating its operation. CA...carriage, N1-N4...ink jet nozzle, OS...slit plate, CC...control section.

Claims (1)

[Scope of Claims] 1. A moving means capable of horizontally reciprocating a carriage; a feeding means for feeding paper vertically; An apparatus for recording using a head with a recording head, comprising: a storage means for storing data related to recording; a pattern generation means for generating a pattern to be recorded based on data from the storage means; and a recording device for recording the pattern from the pattern generation means. In order to achieve this, the apparatus further comprises a control means for controlling the driving of the moving means and the feeding means, and the control means determines whether or not the first forward movement recording is completed, and the control means controls the driving of the first forward movement recording. When it is determined that recording has ended, the carriage is moved to a position to start the next second forward recording, and the paper is fed by a predetermined amount in parallel, and when the carriage reaches the position, If the paper feeding has finished, the carriage immediately starts moving forward to record the second forward movement, and if the paper feeding has not finished when the carriage reaches the position, the carriage starts moving forward to perform the second forward movement recording. A recording apparatus characterized in that said moving means is controlled to hold said carriage in position.