JPS58136452A - Calculator with printer - Google Patents

Abstract

PURPOSE:To enable easy discrimination from other printing outputs with a greater printing density by performing a printing each time of feeding paper by a 1/2 dot pitch when a specific key is operated as a specified print mode indication means. CONSTITUTION:In response to a 5-pulse TD signal from a TP separation circuit TB, an output is provided by one bit from a parallel-series conversion circuit PSC and fed to a pulse width setting circuit DS by a strobe signal from a strobe signal generation circuit SCR. Consequently, a driver PD is driven by a certain time range to output ink drops at the first stage of 5X7 dot matrix of characters for the first line so that a printing at the first stage of the first column is performed at the position deviated by 1/2 pitch from the preceding printing position. Thereafter, likewise, the printing at the first stage of the 5X7 dot matrix is executed to reach the required number of printing columns.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a print mode of a desk-top calculator equipped with a printer (hereinafter referred to as a printer).

In conventional printers, when printing the calculation results manually using the keys on the middle board, the symbols corresponding to the calculation result keys such as [Utt country 1st, 1st, etc.] are printed in different printing colors. Distinguish it from other print output with i! ! It was appearing.

However, in this type of printing, when the operator looks at the printed paper, he or she has to compare the symbols and numbers one by one to track the calculation process and results, which is time-consuming and unsatisfactory. There is also some fear. For this purpose, in the past, an underline or the like was further printed on the printed output of the calculation result, but this required a large amount of paper for side-printing and was uneconomical.

An object of the present invention is to solve these drawbacks by removing the 42 print densities when printing out calculation results, so that the operator can easily identify the calculation results. The purpose of the present invention is to provide a calculator with a printer that has the following features.

The present invention will be described in detail below with reference to the drawings.

1 and 2 show an example of a printer applied to the printer of the present invention. Here, CA is a carriage equipped with one inkjet nozzle N as a recording head, and this carriage CA is driven by a linear motor. Linear 1 motor has permanent magnet PM, magnetic plate Y/
A closed magnetic circuit is formed by the members of the magnetic sliding shaft YJ, and a current is passed through the coil C wound around the sliding shaft YJ around the slidable coil bobbin CB. The carriage CA is driven.

The reciprocating movement of the carriage OA on the sliding axis Y2 is performed by changing the direction of the current flowing through the coil bobbin. Scale plate, fl
The slit plate 08 is made of a non-magnetic material.

The magnetic plate Y/KJil is fixed vertically together with the moving axis Y.

Coil bobbin CB of coil C is attached to carriage C.

Inkjet nozzle N and this inkjet nozzle N
A sub-tank IT that supplies ink to the light-emitting element 1, for example, a photodiode Lm,! A printed circuit board PC for connecting the optical element 1, for example, a phototransistor pH', 7L/quick pull wiring board PL is fixed, and a shielding plate 8B that blocks the photodiode LB at the home position and the transistor Pa is integrated. There is. The printed circuit board PCK is the terminal C/ of the coil C.

C, a piezo terminal (not shown) that is the drive source of the inkjet nozzle N, a terminal LIT of the photodiode Lm,
Terminal PTT of phototransistor PT is electrically and mechanically connected. The printed circuit board pc fixes one end FL/ of the flexible wiring board PL at the seventh end. The other 121 section FLλ of the 7-receive 7-pull cable FL is fixed together with the ink supply tube T/ by the holding plate P. The ink supply pipe Tlk'X is guided backward using the magnetically necessary air gap between the permanent magnet PM and the magnetic plate Y/, and the main tank is connected to the rear end to supply ink to the sub tank BT. do. The scale plate O8 is arranged perpendicularly to the inkjet nozzle N between the photodiode Ll and the phototransistor FT. This saves Wrg space and makes it smaller than K. As the carriage CA moves, the infrared light emitted from the photodiode Ll has a slit 88 and four pinch slits, and a receiver attached to the light receiving part of the phototransistor FT turns on the phototransistor FT by means of a scale plate Q8.

Repeat the off-off and tie the ball as shown in Figure 3 (B).
ri/<RusTP)k occurs. This tie ink pulse TP uses the speed and position of the carriage CA during carriage scanning to control the speed and ink end nozzle N1 paper feed pulse motor 8P. Also.

The movement of the shielding plate 8B accompanying the movement of the carriage CAf) also turns on and off the phototransistor PB at the home position, indicating the presence or absence of the carriage at the home position. When printing one line, one character consists of a don matrix, and the carriage C is
A starts scanning, the position is detected by the tie ink pulse TP, and a voltage is applied to the piezo of the W11% ink end nozzle at a predetermined position to eject an ink droplet.
fl As shown in (A), an l dot line is printed on the weighted paper PP. When the printing of the l dot fin is completed.

Normally, when the paper feed pulse motor 8P is rotated by one dot pinch, Okazaki K and carriage CA are returned to their home positions. The phototransistor PBK confirms whether or not it has returned to the home position.The 5° paper feed is transmitted to the gear G/ and the gear G through the rotating motor shaft gear (not shown) of the pulse motor SP. Gear G/
, decelerates due to G. The final stage gear G is platen P
Since it is fixed to the L shaft, the deceleration is transmitted to the motor 8.
The rotation of P rotates the shaft of platen PL, and the paper can be fed by a predetermined amount in the direction of one line. This operation is repeated until printing of a predetermined dot line (for example, 7 lines) in one line direction is completed, and then the platen PL is rotated by a predetermined distance between lines by the pulse motor SF to complete the printing of 7 lines. After printing is completed, the inkjet nozzle N is moved to the position of can 7 KP and stopped. This prevents the inkjet nozzle from clogging, drying out, and receding the meniscus.

D/ and IL2 are collision dampers made of foam or the like, which soften the collision of the carriage CA and prevent the meniscus caused by ink leakage from the nozzle N from retreating. Also,
The sub-tank 8T is arranged so that the magnetic plate Y/ and the damper D/*K do not come into contact with each other, so almost no impact force is transmitted, and there is little bubbling inside the V-tank ST.

As mentioned above, in the printer to which the present invention is applied, the scale plate O8 made of non-magnetic material is arranged vertically, so there are small wrinkles.

It has a thin and simple structure and can be easily mounted on the device of the present invention.

Further, since a rotary motor is not used to drive the carriage CA, gears, links, ranks, etc. are not required, and no radients, puffs, etc. are used for paper feeding, so printing can be performed extremely quietly.

In addition, the sub-tank 8T and printed circuit board PC are placed on the carrier 7cm, and various electrical parts are connected to it, so it can be manufactured easily and easily.
Since L is used, it can be moved freely, and the ink supply pipe to the sub-tank 8T on the carriage CA is locked in one place, making it simple.

Incidentally, the scale plate O8 is provided with a slit 88 at the Jth position as shown, and serves both as control for the first position and for constant speed control.

That is, as shown in FIG. 3(A), the slit 88 is
It is installed up to the scale plate that exceeds the ring of the printing paper PP, and the carinshi C starts moving from the initial position HO, and the speed is adjusted to count 8B, for example, 1 piece, and the % is counted. Start printing one digit from t~/
Finish printing one digit with the j slit of J, use the coslift of /J and / as a blank space between adjacent digits, and repeat this from now on. In Fig. 3 (A), kB is an aprope slit for detecting the printing start position, %c8 is a character slit, and BS is a print slit, and these slits and their intervals are used to keep the carriage moving speed constant. ing. In addition, the position where the carriage CA starts moving from the home position and the signal of the phototransistor FB changes from off to on is provided with a shielding section for several slits, taking into consideration variations in position and speed.

The above is the configuration of the printer applied to the present invention.

Next, FIG. 4L (A) shows an example of a keyboard in this embodiment, and FIG. 4L (CB) shows an example of a control section for controlling printing of the printer described above.

On the keyboard shown in Figure LA), the calculation result keypad 1
Kuni, Hi, and Ou are collectively called the specific key 'I' KIY4
The following describes the operation when one of these keys is input.

In Figure (B), when the print command PO is input, 7
The limp flop 11 is sent and the cent output 'tfi
4'ljl/ is input to the control section CC. As a result, the control section CC becomes the printing operation mode. In the control sCC, firstly, the signal lap causes the flip key 7g to be manually sent to the V# foot key TKIY.
The state of each cup is judged, and it is recognized whether a specific key has been pressed to instruct printing with a higher density (special printing mode). When 7 ripprop V is sent by the key of the specific key TKIY, Furi 71 Fron 11
High level 1 from Ko! The number IJP is output. When the control unit CCa detects the high level signal 1gF, it outputs the low level signal I for a certain period of time and outputs 277 to the printer 17.
11. Reset the 1 stage number counter 7C and the speed control s8C. Furthermore, the signal 1 is supplied to the print digit counter, PC, and TF separation circuit TB via the AR to clear these circuits.

Next, open the AC and check the print digit counter PC and the print digit i! Storage register P
The matched output of the matching circuit CO of R (hereinafter referred to as print digit register PR) is sent to ACtta and sent 491! Detected by. If there is a mismatch, the signal IF
Drive the coil C by setting the coil C to @l" and the IB to 90", and move the carriage CA in the forward direction (see Fig. 3 (B).
) and execute printing.

Therefore, if the content of the print digit number counter PC is O and the content of the print digit register PR is 4 digits.

The coincidence circuit CO outputs a mismatch signal, and the control section CC detects this and performs the above driving.

By moving the carriage CA in the forward direction,
・The shielding plate 8B integrated with the carriage CA is moved from between the photodiode LB and the phototransistor FB,
Finally, the gap between the photodiode LB and the phototransistor PH is no longer blocked, and the phototransistor PB turns on from off (t'1 t #-+@O"). When the phototransistor PR turns on, the signal Inc becomes @O", input to A'f' via inverter ITR.

Also, a photodiode LK and a phototransistor P! as a detection section mounted on the carriage CA! moves on the scale plate 08 with the movement of the carriage CA, and the signal @ F
The slit 88 detection signal j, that is, the tie ink pulse TP, is input to the amplifier AP/K by T. Amplifier AP/
The tie ink pulse TP amplified by
T and is output to the speed control section 8C. As mentioned above, the other input terminal of the gate AT receives the signal ! If r and lBC are input and the contents of the one-digit number counter PC and the print digit number register PR do not match, the signal I! y is input as @l''.When the signal IBc becomes @l'' when the shielding plate 8B integrated with the carriage CA is removed from between the photodiode LB and the phototransistor PR, from that point on Goo) AT opens, tie ink pulse T
P is input to the TP separation circuit TO.

The input tie ink pulse TP is sent to the TP branching circuit T8.
As shown in FIG. 1, the signal is separated into l pulse signals 'f'D/ to TDn for each digit of printing.

TP +11 (Parallel-to-serial conversion circuit P8C as No. II TD
and is input to the strobe signal generation circuit 80-.

Here, the number of printing digits for the - line is determined in advance by the printing digit register P.
The character digits to be printed are counted by a print digit counter PC, and the content of the print character memory CM is selected by a decoder DC that receives the number of characters. The selected content is determined by outputting an S dot print data signal from the character generator CG (j x 7 donmatrix) under the output control of the stage number counter 7C.
It is applied to the column change circuit P8C. Parallel-serial conversion circuit P8c
From 111po111[i1%'I'P 9 separation gTD of l pulses supplied from 'l'B, the output of each l pulse is supplied to gate 8D. In the history, the pulse my constant circuit D8 is supplied to the pulse my constant circuit D8 via the strobe signal generated by the strobe signal output from the strobe signal generating circuit 8CR in response to the TP separation signal TD of the l pulse.

As a result, the driver PD is driven to operate piezoelectrically, and ink droplets are ejected every time the signal from the parallel-to-serial conversion circuit P8c is output, thereby achieving 1-dot horizontal printing during surgery.

In addition, an example of the TP distribution circuit 'I'Bk in Figure 1 (A) is shown in '#s6 Figure LA), where D is a delay circuit.

K/, KJ4j Countll, JP/, JFJ &
1 JK 71J 7pu70tsubu, G/~G7 is and gate, Nl, Nl is Nandogoo), I/,
IJ is an inverter. 1m for this TP! (b) Road T
The operation of B is shown in the tying yard in Figure 4 (B),
The required signal 'I'D/~TDn is generated as the TP separation signal TD via the AND gate G7. In the above case, j for the first digit of the printing digits in one line
This is an explanation of the printing of the S dot in the 7th row of the 7 rows of the X7 dot matrix.

When the control sCC detects that the printing of the 1st digit S dot in the 7th row is completed by the signal supplied from the TP minute 111 circuit TB, it advances the printing digit counter PC by 1 step (it outputs an increment signal). . Thereafter, the contents of the print digit register PR and the print digit number counter PC are determined in the same manner as described above.

Check the match in the match circuit CO and send the output to control @ CCK via AC. If the control unit CC detects a mismatch, the print digit counter PC
The characters in the output print character memory CM of +l digits, ! 1 of l pulses from P separation circuit TB! No. (TD
Execute printing with J).

The operation time from reading out the memory from +l of the print digit counter mentioned above to inputting it to the parallel-to-serial conversion circuit P8C is because the circuit operation time is sufficiently faster than the tie ink pulse TP, so the next l pulse can be fully executed in front of In this way, the signal 'I' DJ.

Each S in the 1st row and 1st column by 'I'D4' to 'I'Dt+
Selective printing is performed dot by dot. - Line printing [, printing digit number counter PC and printing digit register PR
When the contents of the controller CC match, and the controller CC detects the match, it outputs a pulse signal to drive the driver PFD, energizes the pulse motor 8P, and executes paper feeding. Here, at the beginning of the printing operation, a specific key is pressed and a printing instruction to increase the printing density is given, so the pulses output to the driver PFD are output to send a tont line in the case of normal printing. Cobalus issue,
In other words, it is assumed to be l pulse. As a result, the binte for one paper feed becomes the number for normal printing. In addition, this pulse output opens the gate AR, and the signal lcU output from the output side causes the printing digit number counter PC1TP and the minute circuit T.
Clear B. Furthermore, this pulse output is 7 limp 70
It is input to Tsubu FBL. This flip 70mp FBL
When Cobalus is input, the l pulse output is stage number crank p7
Supply to C. The stage number counter 7C performs count amplification at the falling edge of the pulse supplied from the 7-prop block FBL, but in this case, since no pulse is supplied from the printer 1 prop FBL, the count amplification is not performed, and the jX7 donma matrix output from the character generator CG. He is still directing the first step.

Note that the control @CC detects that the output signal 1/co of the gate AL which takes the output IIIJIm of the stage number counter 7C does not become @/"K, and that the number of printing stages is before the 7th stage from K.

Also, control @ CC meeting 1. Gogo/F 101゜l
Set B @11 and move the carriage in the opposite direction (Fig. 3 (8J#
drive). From IIIK#1jJK in the opposite direction,
The phototransistor PR moves to the home position under speed control, and the phototransistor PR, which was turned on, turns off ("0" → @l
), and the signal 1'l'R is amplified via the amplifier circuit AP and supplied to the control section CC as a signal IBc.The control section CC uses the signal IBc to indicate that the carriage CA has returned to the home position. Detect and believe @
Set lB to @0° and stop driving the carriage CA in the reverse direction.

In addition, when the carriage CA is driven in the reverse direction, the child signal jF is @O'', so the AT is closed, the tying pulse TP is not input to the TP separation circuit TBK, and the printing during the return is not possible. Note that driving in the opposite direction and paper feeding are performed in parallel.

Next, the control section cc is controlled by 0/1/co as described in a. Since it is detected that the printing of the seventh row of the ×7 don matrix has not been completed, the printing indicated by the first row number counter 7C is further executed.

Here, the 1st stage number counter 7C is not +/.

Its contents remain O, and the character generator C
In G, the first row of the j×7 donmatrix is still specified. Therefore, in the printing operation, the same printing pattern as the previous printing is performed. i.e. control@CC
sets the signal 7F to "ll" and the signal 4B to @01 to operate the driver and open the l input terminal of the gate AT.

By driving the carriage CA in the forward direction, the carriage C
A shielding plate 8B integrated with A is pulled out from between the photodiode LB and the phototransistor PB, and the output signal /'I'R of the phototransistor FB is supplied to the amplifier circuit 5P. The signal lBC obtained from the switch changes from 1/'' to @O''.

By supplying this signal +91Bc to the gate ATK via the inverter ITIIL, AT is opened.

As a result, as the carriage CA moves, the detection unit
The optically detected signal from the PT, ie, the pulse TP, is supplied to the TP separation circuit TB by sequentially valves the amplifier circuits AP/AT. In the TP separation circuit TB, the supplied TP multiplied signal S and the TP separation signal TD for each Hals
/ = separated into TDn.

Next, in the same way as described above, the first digit character outputted from the print character memory CM selected via the decoder DC is changed to a character by the instruction of the first stage number counter 7C. Generator C
Output from G. The parallel column conversion circuit P8C outputs l bits at a time from the 5-pulse TD multiplied signal from the TP-circuit TB.

Strobe signal from strobe signal generation circuit SCR
8D is supplied to the pulse wheel toss circuit D8. As a result, the driver FD is driven by the -leg time width, and the jX7 of the first digit character is
The ink droplets of the first stage of the don matrix are output, and the first stage of the first digit is printed at a position shifted by h pinches from the previous printing position.

Thank you to vkrffJ! ×7 Don Matrix 1
Printing of each column is executed for the number of printing digits.

When the end of printing is detected by the output from the coincidence circuit CO, the control section CC supplies a pulse signal consisting of 1 pulses to the driver PiFD. In response to this pulse input, the driver PFD energizes the pulse motor PM to execute h-pitch paper feeding.

Here, in the If printing operation, one paper feed is performed with an h pinch, so the current paper feed with an h pinch completes paper feeding of S/pitch pages, that is, 1 tons of 4 pages. Also, as described above, the signal lCH is output from the gate AR which is opened by the pulse signal output from the control section CC.

Print digit counter PC and TP separation circuit TB are cleared. Furthermore, the pulse signal g from the control circuit CC
Also supplied are 7 rips 70 7 FBL K. When the current l pulse is input to the flip-flop 1FilL K in addition to the l pulse that came in during the previous printing operation, a total of cobals has arrived.

7 requests 70 pieces 1FBL 4! Invert. Therefore, the stage number counter 7C is incremented by +7 by this inverted output from the 7 phosphorus 1 freon 1FBL. At this time, the control unit CC detects that the printing of the 7th row of j
@O'' and IB as ``l'', drive the carriage 7 CA in the opposite direction and move it at high speed fil#L, and the shielding plate 8B integrated with the carriage CA blocks the light from the photodiode LB. As a result, the signal IBc output from the phototransistor PI and obtained via the amplifier circuit AP
changes from @0” to l”. As a result, the control unit CC detects that the carriage CA has returned to the home position VN, sets the signal jB to @O'', stops driving the carriage CA in the reverse direction, and starts moving the carriage CA in the forward direction.

This time, printing of the first stage indicated by the stage number counter 7C incremented by +1 is executed.

Now, the first stage number counter 7C is +/ and its contents are from 0 to l.
This instructs the first stage in the character generator CG, and in the same way as the above-mentioned first stage printing (including the first stage printing with H pinch paper feed), the control unit C
C drives the carriage CA in the forward direction with the signal HilF set to 11''' and IB set to 10''. As the middle spear CM moves, the timing pulse TP detected from the detection units LM and FT is input to the TP separation circuit TB via the amplifier circuit AP/, AT). In the TP separation single path TB, the TP separation signal TD/~〒DnK for each inputted tying pulse TP t z Hals is separated. and,
Similarly to the operation described above, the first digit character output from the print character memo UCM selected via the decoder DC by the output of the print digit counter PC is output to the character generator CG by the 1st stage number counter 7Cf) IWI indication. is output from. However, since the content of the 5-stage number counter 7C is +l, the 2 of the 1%7 donmatrix
The data of the row is output from this character generator CG. This output data p is outputted in units of l pins via the parallel-to-serial conversion circuit P8C by the 5-pulse separated signal qTD from the TP portion I11 circuit TO. Furthermore,
A signal from the strobe signal generation circuit 8CR is input to the pulse control circuit D8 via the data line 8D. As a result, the driver PD is driven, and an ink droplet is ejected to the first stage in the jX7 donmatrix of the first digit character. By the above operations, the first dot printing of the first digit character is achieved.

After that, do the same as printing in the first stage, and! Executes printing for the number of printing digits on the first row of the ×7 don matrix. When the control and roll unit CC detects the end of printing of the first stage by the coincidence circuit CO, it outputs the driver PFD K pulse and energizes the pulse motor P to execute paper feeding, and prints the 7th stage of the jX7 don matrix. It is detected by the signal // from the gate AL that printing has not yet been completed.

Here, as in the first printing, the control section CC
Since the printer recognizes that printing with a higher density is instructed at the start of the printing operation, the pulse output to the driver PFD is the l pulse.

Paper feed is h-bikde. Furthermore, the signal 1cH output from the gate AR due to the input of this pulse clears the print digit counter PC and the 'l'P separation circuit TB.

Furthermore, this pulse is also input to the 7 limp prop FBL, but as mentioned above, the flimbprop 7 FBL t
'! It starts at the falling edge of this input l pulse and does not fall until the primary l pulse is input. Therefore,
The stage counter 7C, in which the falling edge of the output signal of the marine 1 pump 1FBL is set at 9, is tMI! ,Ocular/
As in the case of the second printing, the first row of the +/sarazu IX7 donut matrix is also specified.

On the other hand, the carriage CA starts moving in the opposite direction by outputting E 11 as @0' and IB as 11m from the control unit CC, and moves to the home position while being controlled by the device. The phototransistor Pa, which was turned on by the photodiode LB, is turned off (10" → 11
”) When detecting the signal IBc indicating that the carriage CA has returned to the home position, the control unit CC determines that the carriage CA has returned to the home position, and stops driving the carriage CA in the opposite direction. During the return operation, printing is not performed, and the reverse direction driving and paper feeding are performed in parallel.

Next, since the control unit CC detects that the printing of the seventh row has not been completed, it prints the same printing pattern as the first row while feeding the paper by h pitches. In this printing operation, the content of the first stage counter 7C remains at 1, and the character generator CG continues to indicate the first stage of the jX7 donmatrix, so the first stage is printed in the same manner as the previous printing. jy1'', that is, the control unit CC□ moves the carriage CA in the forward direction by setting the signal jF to @l'' and lB1 to @0'', and outputs the timing pulse TP detected from the slit 7B by the timing pulse TP through AT. w1 circuit TaK is input. Separation signal TD is output from this separation circuit !B. Then, one stage number counter 7
The contents of the print character memory CM instructed by C! ×7
The l bit of the donma matrix is this signal 'rD.
Therefore, l bits are taken out one by one through the capacitor generator CG and the parallel column conversion circuit P8C, and the pulse Il! It is input to the foot circuit D8. Pulse S foot circuit 08 k! )'' The fiber PD is driven to eject ink droplets to the first stage of the jX7 donmatrix to achieve printing. This printing operation is executed for the number of digits.

When the execution for the number of digits to be printed is completed and the matching circuit Co K detects the end of printing, the control unit CC controls the driver PF.
Output DK/pulse and execute paper feed with number pinch. As a result, one paper feed becomes 5tI (b) and no dot twin. Further, the number 8 is cleared in the print digit counter PC and TP separation circuit by this Norculus output. Further, this pulse is input to the flip unit 70 FBL.

This means that the eco-pulse has entered in conjunction with the previous time, so 7 rip 7 p 1 ν8L is inverted and the output is @
l″ becomes @θ″. Due to the fall of this output, the stage number counter 7C is incremented by +1. Here 6 control part CC
Detects that the printing of the 7th row of jK7 dot!trix has not been completed due to the fact that the signal 1/co is not @l'' as in the case of printing, and sends @0'' to the signal '9111.

Drive carriage CA in the opposite direction with j8 as @l''#I
hjru. Then, the middle spear CA is moved in the opposite direction while controlling the speed and longitudinal direction. The shielding plate 8B attached to the carriage CA blocks the light from the photodiode LB, and the signal lBC obtained from the phototransistor FB via the amplifier circuit AP changes from @O'' to 11'', so that the control unit CC4! When it is detected that the carriage CA has returned to the forward position, the signal IB is set to @O'' to stop driving the carriage CA in the reverse direction.

In the same way, it is executed every time the paper is fed to print the third and third rows. After printing the 7th row, further h
After pitch paper feeding and printing, the control unit CC feeds the paper by h dot lines, clears the print digit counter PC1 and the TP separation circuit TB, and increments the one-stage counter 7C by +l. At this time, the control unit CC detects that the output signal 491/co from the gout AL has become 11".

It is detected that the printing of the seventh row of the jX7 donma matrix has been completed. Here, the control sCC is upper l! I
Similarly to 2, set the signal /F to "O" and lB to 11", move the carriage CA & reverse, drive until the output of phototransistor FB by gM No. BC goes from @O" to @/II, and move the carriage CA to During this time, the control unit CC outputs pulses to drive the driver PFD! Dot line paper feeding is performed to provide line spacing between characters printed as described above and characters to be printed. With the above steps, printing of one line is completed.

Note that theory #4 above refers to the printing operation when a printing instruction to increase the printing density is not given by manual input by pressing a specific key, but the normal printing operation is performed as follows. To explain with reference to Figure 1, when the print command @gpo is input, the control @CC)'! The cent output signal 18P of the 7-lip front 1F- is determined. Assuming that the 7th lip lock 1r is currently in the reset state because there is no key power for the specific key, the control section C
C indicates that the printing is normal printing and outputs a pulse output as a copulse every time %lton trine printing is completed. As a result, the paper is fed directly by l dot lines, and the flip-flop FBL is also centered at the first 7th pulse and inverted at the 7th co-pulse, so the stage counter 7C is incremented by +l every time the paper is fed, and the normal Printing of the jX70 donma matrix is executed.

Figure 5 shows the printout when the specific key TKEY is pressed as described above! This figure shows an operation timing chart when "1 Ju1..." is performed.

Next, the speed control of the carriage CA is performed using the 5th speed wrinkle control sSC.
Explain the operation. FIG. 7 shows an example of the interception of this speed control section 8C, and FIG. 1 shows its operation timing chart. In FIG. 7, the carriage CA moves along the scale plate 08 by driving with the coil, and as mentioned above, the amplifier circuit 08 generates a timing pulse TP, which is a signal optically detected by the photodiode L and the phototransistor PT. Take out via Pl. Due to the arrival of this timing pulse TP, the output 8QO of the reference focus shift register 8R
, 8Q/*8QJ + 8Q' are cents sequentially for each clock CP of the clock pulse generator CPG. Then, the output signal TP/, which is the result of inverting the signal of 8Q/ with the inverter amount 0 and the signal of F4QO, is output from AO to the signal line JT/, and the signal of 8Q, 2 is output from AO to the signal line JT/. Output signal TP that is the logical equivalent of the output inverted by inverter P l/ and the signal of 8Q/
(J is ant game) A/ outputs the signal to 11#lT, and similarly inverts the 8QJ signal and 8Q using the inverter.
The output signal qTPJ obtained by taking the I11 product with the signal qTPJ is output as the signal 1i11fTJ.

Signal 'rP/-TPJ Y Signal line IT shown in Figure 1
The 7th pfron 1811F is reset through the signal 'rP/fX OR gate alt outputted to /, and the signal ! !
The signal TPJ output to JT is andgoo) A4 (
A4 (open for the time of the signal 'rpco) is input to the signal -j?JK The output signal TP3
(sent the flip-flop FCP, and go)
AJK input, reset via the inverter only when the signal TPJ is @11, and from the moment it becomes @0", the reset is canceled by setting the output as @l", and the signal '9Wjjlc
Input the clock CP from p to the counter CCH. Counter CCH indicates that the signal j is set at 0 at the start of printing.
When it becomes ', it's goo) It is reset by the output from AJ, and the flip-flop FCP is reset by the output from Gootom S. The signal TPj changes the signal glnR to 10'' and continues to reset the counter CCH. By cent.

Set the signal ql+R to @l” and then apply the tizing pulse TP.
Counting starts from the moment when becomes @0'' and the reset of counter 〇〇H is canceled, and all outputs QO to Qj are passed through ND, so at the end of counting, Enandogou) ND becomes @01 and resets the 7 lip prop ICP, counter C
Also reset CH.

Also, 7s 7p 70kup 8RF % inverter.

Reset by signal 12 supplied via RP. i.e., anime) AP and A
One of the inputs of H is +2@/'' and the operation state is gauze.Hereinafter, the explanation will be made according to FIG. 1.

Due to the generation of pulse TP (1) of input signal TP, pulse M is generated from AO, A/, and AJ respectively.
P/, TPJ, TPj are output, flip-flop FCP is set by pulse signal TPJ, and when clock CP is input to counter CCHK, counter C
CHj'! As the predetermined number of counts is executed, QO, Ql~QnK are output, and power! 7y
The output signal CCO of the ORO becomes @11 and is input to one side of the AND goo (AND goo) Al. A signal 1rP is output to the other signal of AJ - ITJ. Pulse signal TP 42.
1IIW<+-rUy9cAg)##, and its timing and time width are related to the carriage speed. Therefore, when the carrying speed is slow, that is, when the timing pulse is input at TP (see figure wi1), the pulse signal TP is generated until the count of the counter CCH reaches T-f. The pulse signal TPJ output from the gate A/ is not output and it is goo) Al is closed and %7
Limpfromp 8RF 4”!, signal TP/ outputted by tie ink before signal TPλ) R
It remains in the reset state through F. Since this does not affect the AND gate AIP#AB, the carriage CA integrated with the motor coil C continues to be driven.

Pulse '1'P (as in the case of ri, pulse ?P(2)
, (3).

Also in case (4), the logical product of the counter output cco and the signal TPJ is not taken by the AND gate Al, and the driving of the motor filter C does not change. However, as the drive continues, the moving speed of the carriage CA gradually increases. The timing pulse intervals are sandwiched.

Then, when the pulse TP (5) is output, the output signal from the counter cc■ via the gate oao*CCO
(4) and the pulse 'I'PJ (5) of the signal TPλ are ANDed by the gate A4l-, and its output signal Al. becomes 11" and sends 7 lip fluorons and 18 RF.

When Flip Flon 18RF is sent, the output Q is 1
From ノ′″@ o m h Z 9 and goo) AP
and AH are closed and the signals FM and r8@0'' are used to deactivate the driver 14 times and stop driving the coil C.Even if the driving of the coil C is stopped, the carriage CA still moves due to inertia, but Its speed is slowed down by III friction.Then, the pulse '1'PJ of the signal 'l'PJ
(5), the counter CCH is reset by the signal TPJ (5) which is inverted via the inverter, and the 7-rip 7R amplifier F is reset by the rising edge of the pulse TPj (5).
The CP sects and the counter CCH starts counting again. Then, the pulse IIIP/(6) generated by the pulse TP of the primary signal TP (6)) R
Flip-flop 8RF is reset through F, its output page is set to @/'', GUTOM F and AB are opened, and coil C is driven again.

m No. TPut) Signal 'l from pulse TPJ (5)
”P/ pulse tP/ (6) f) Although the z-wheel drive has been stopped and the carriage speed has been reduced, the speed has not yet decreased completely at the time the pulse TP (6) is generated, so the timing pulse ?P (5)
As in the case of , the output signal from counter CCH q CCO
(5) and the pulse tpJ (6) are ANDed by the gate Al, and the 7 limp 70778RF is resected, and the pulse 'f' outputted by the generation of the pulse TP (7) closes the 7 limp 70778 RF. 'Stop driving coil C until P/(7) is reached. At this time, as above, the counter C
CR is reset by the inverted output 'rPj (5) tc, and the flip-flop 1FCP is set by the fall K of the pulse TPJ (d), and the counter 〇〇H starts counting again.

Similarly, the next timing pulse 'I'P (7) causes the signal TP/ (7) to generate the pulse)
Reset the flip-flop 181F via ILF, open AP and AB, and drive coil C again.

Similarly, the logic of signal 49TPJ and counter output CCo is explained below.
[Coil C is driven from lK, and pulse 'I'? (
7).

In (8), the drive tube of coil C is not stopped, and the pulse '1' is
P (9) Ktd ite, pulse TP (5), G6)
J-III': Stop the drive of 1 ile c and turn P.
The speed control of the carriage C in both directions is executed based on the force count n of the clock pulse CP by CCHK.

As observed above, in this embodiment, usually one character is ! When the specific key '1' K11Y as a specific print mode instruction means is operated, printing consisting of ×7 donmatrix is performed by printing every time one paper is fed vh tontobi 7te. The printing was made up of a dot matrix (γ×J). Therefore,! The ink ejection area in the characters becomes wider, and the printed characters can be visually perceived as denser. In this way, the dots in the line direction of the printed characters are dense and vertically large, and the printing machine produces dark prints.
jL is now possible, so print outputs resulting from specific key operations, such as addition results and multiplication results, can be easily distinguished from other print outputs. Furthermore, it is not necessary to print under fins or the like on such printed outputs to distinguish them as in the conventional method, and printing paper can be saved.

As described above, according to the one-shot #4, it is possible to realize a computer with a printer that allows the operator to easily determine whether or not the printout is due to the operation of a specific key.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of a printer applied to the present invention, Fig. 2 is an internal configuration diagram of its carriage GA, and Fig. 3 (
A) is an enlarged view of the scale plate, and Figure 3 (B)
) are signal waveform diagrams of the pulse signals TP and T which are generated as the carriage CA moves, Figure 1 (A) is a diagram showing an example of a keyboard applied to the present invention, Figure 3 (B) is a diagram showing an example of the keyboard applied to the present invention. 5 is a block diagram showing an example of a control unit that performs print control of a printer applied to the present invention, and FIG. 5 is an operation timing chart showing an example of print output by special electric key operation in a computer for the printer of the present invention. Figure 4 (
A) and (B) are the TP in Figure (B), respectively.
A block diagram showing an example of a separate circuit MTH and its operational structure; FIG. γ and FIG. N... Inkjet nozzle. CA... Carriage 7, PM... Permanent magnet. Y/... AI plate, Y co... Magnetic sliding shaft. CB-... Vilhohin, C. ... Ko (A/, O
8...Scale plate, O8...The receiver is a scale plate. 8S...Thrift, 8T...Subtank. Lm, LB...photodiode. PT, Pg...Hotototsun V Star, FL 7 lexiple wiring board. PC...Printed circuit board, C/, CJ...
terminal. P... Pressing plate, Tl... Ink supply pipe. MT--Main tank, BP--Paper feed pulse motor. 8B...shielding plate, KP-...cap,
D/, DJ...damper for collision buffering. TKNY...Special leg dispute-% PO...Printing command,
F/, Fco, FIL...7 lip flop. CC...Control@, 7C...Stage counter, sc...Speed control section, 8D, A'l
', AC, AR...Goo),
PC...Print digit counter, TB-...'r
P separation circuit, PIL...print digit number storage register, CO...matching circuit, PFD, FD,
MD...driver, ltea...inverter,
MuP/, APJ...Amplification circuit. P8C: Parallel column conversion circuit, SCa: Strobe signal generation (2) path, CM: Print character memory. CG...Character generator. D8...-Pulse width setting circuit. D...Delay circuit, K/, Ω...counter. JF/, JFλ...7 liters 170 pumps. G/-07...and goo), N/, N con...nant gate. I/,, Ico...Inverter. Patent applicant Canon Co., Ltd. No. 4 (A) Figure Roro Higuchi Roro

Claims (1)

[Claims] It has a specific printing mode instructing means, and when the special printing mode is instructed by the specific printing mode instructing means, the printing is performed so that the dots in the row direction of the data to be printed out are denser and larger than in normal printing. A calculator with a printer, which is characterized by printing with a darker color.