JPS5828289Y2 - Printing and display device - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a display device that can also be used for printing.

For example, in a computer, etc., the terminal devices that process the terminal output include a printing device for printing the output and a display device for simply displaying the output, and these are each independent terminal devices. Traditionally exists.

Generally, the printing device is a printer with an impact or non-impact printing mechanism, and the display device is a cathode ray tube.

Normally, what is desirable for a terminal device is to have both the printing device and the display device separately, but this has the drawbacks of being expensive and requiring a large amount of installation space, and especially For printing devices, visibility immediately after printing is difficult for various reasons.While maintaining visibility in the case to some extent, it is also important to provide sufficient soundproofing for impact-type printers. was extremely difficult.

In view of the above-mentioned circumstances, this idea was developed to provide a printing and display device that can be used as a terminal device, at a low cost, occupying a small space, and having good visibility of printing status and soundproofing. This is what we aim to provide.

In this case, as something similar to this, JP-A-52-2 has already been published.
There is a method disclosed in Japanese Patent No. 326, but the present invention has been improved to make it even easier to use.

That is, in the present invention, the printing paper is fixed, and only the printing head, that is, the head chip, is configured to be able to move freely in two directions, row direction and column direction, so that the printing paper surface is completely filled with the required characters, strokes, etc. In other words, it has a method of operation similar to writing with a brush on regular paper, and
In addition to this method, the print head may be fixed (for example, moving only in the row direction, but not in the column direction), and the printing paper may be moved in the column direction, as in a teletype, to achieve the desired purpose. Either method can be selected arbitrarily.

An embodiment of the present invention will be described below based on the drawings.

First, to explain the outline of the present invention, as shown in FIGS. 1 and 2, a carriage 34 having a printing head chip 44 is supported so as to be movable in the direction of arrow b (left and right). First support means, i.e. slider 13 and support rods 21, 22 supporting this slider 13
, the carriage 34 is moved in a row (
A second support means movably supported in the vertical direction, that is,
Guide rail 12a=12b, pulley 11a=llb:1lc-11d guided by it, and pulley 26
a s 26b; 29a * Wires 31a, 31b suspended from 29b and a first driving means, that is, a mounting portion 1, which drives the carriage 34 in the direction of the arrow on the first supporting means.
Both goo attached to 6! A head drive step motor 35 that drives the carriage 34 by a wire 23 installed between 715a and 15b, forward and reverse pulse generators 67 and 69 for controlling the motor 35, and the first support means, a second drive means or solenoid 49 for driving the carriage 34 in the column direction on the second support means;
and a ratchet gear 50 driven as such, a transparent platen 2 having an area larger than the operating range of the carriage 34 and disposed to face the head chip 44, and the head chip 44 and the transparent platen 2. In a printing device having a feeding means for supplying thermal printing paper 3 between the roller portion 4 and a knob 7, the first support means is placed on the second support means at a predetermined position in the column direction. In order to stop the printing paper 3 in the column direction, the first control means that controls the second drive means, that is, the one-line feed signal generation circuit 81 (FIG. 5) and the slider position designation key 86 (FIG. 5), move the printing paper 3 in the column direction. The apparatus further includes a second control means for controlling the supply means to intermittently send to one line, that is, a -line feed signal generation m31 and a one-step pulse generation circuit 89 (FIG. 5). .

This will be explained in detail below.

In FIG. 1, reference numeral 1 denotes a housing, and a transparent platen, that is, a transparent portion 2 is attached to the front surface of the housing 1.

3 is printing paper, for example thermal printing paper, and transparent platen 2
is opposed to the back of the

The printing paper 3 is extended from a roll portion 4 in the lower part of the housing 1, and its free end is pulled out from the upper part of the housing 1.

5. 6 (6a to 6e) are the power switches and adjustment successors respectively attached to the housing 1 at the bottom of the transparent platen 2; 1 is a knob used for manually feeding the thermal paper 3; Reference numeral 8 denotes a stacker lid that is removably protruded from the bottom of the housing 1, and although this stacker lid 8 is not shown,
The roll portion 4 of the thermal printing paper 3 can be replaced as it is removable.

The front panel 9 of the housing including the transparent platen 2 is hinged to the housing 1 and can be opened and closed. By opening it, you can set the thermal printing paper 3 inside and inspect the inside. can do.

Next, in FIG. 2, which shows the drive system by cutting out a part of FIG. Guide rollers 11a attached to both side edges respectively
=11b;lie.

11d is guided by guide rails 12as12b to move up and down.

Note that the guide rails 12a and 12b are erected on a fixed portion (not shown) of the casing 1 shown in FIG.

A pair of L-shaped angles 14a are provided on the front surface of the slider 13.
, 14b is attached, the lower edge is forward (direction of arrow a)
A mounting portion 16 is formed by bending the mounting portion 16 toward the bottom.

Support rods 21 and 22 are attached to the pair of angles 14a and 14b so as to span them, and a carriage 34 is slidably attached to the support rod 21.

Further, this carriage 34 has two opposing gripping pulleys 3.
8a * 38b is held by both gripping pulleys 38a-3
8b holds another support rod 22.

The Goo'J38b is brought into elastic contact with the support rod 22 by a biasing system 40 shown in FIG.

The slider 13 and the support rods 21 and 22 constitute a first support means.

Next, in FIG. 3 showing the relationship between the housing 1 and printing paper 3 in FIG. 1 and the drive system in FIG. A head substrate 43 is attached via the spring 42, and this head substrate 43
In this example, a thermal head chip 44 is attached to the front surface of the thermal printing paper 3, and this head chip 44 is arranged to be in contact with the back surface of the thermal printing paper 3.

The head tube 44 is configured such that a plurality of dots are arranged in the vertical direction or in each of the vertical and horizontal directions, and each of these dots is selectively heated. This is well known.

Upper and lower shirts 24 and 25, both ends of which are rotatably supported by the fixed portion of the housing 1, are arranged parallel to the support rod 21, and the upper shirts 24 are connected to pulleys 26a-26b.
But the lower shaft 25 is equipped with boo's 29a and 29b, and a wire 31 is installed between the pulleys 26a*29a.
A wire 31b is suspended between the pulleys 26b and 129b.

A pulley 27 is attached to the upper shaft 24 so as to be rotatable relative thereto, and a return spring 28 is wrapped around the pulley 27. One end of the pulley 27 is attached to a fixed part of the housing 1, and the other end is attached to the slider 13. , a biasing force is applied that constantly pulls the slider 13 upward.

Parts of the wires 31a*31b are respectively latched to the slider 13 with clasps 33, and pulleys lla, llb; It is subjected to 13 vertical (up and down: columns) movements.
The support means of the guide rail 12a * l 2J
Pulley 11a.

11b; 11c=11ds pulley 26a-26b;
29a=29b.

A step motor 35 for driving the head is mounted on the lower surface of the mounting portion 16.
is attached, and its rotating shaft is attached to the small gear 36.
Furthermore, a pair of pulleys 15a and 15b are provided on the upper surface of the mounting portion 16.
(Fig. 2) is rotatably mounted) Boo I) 15
A large gear 37 coaxially attached to the gear 36 meshes with the small gear 36, and the pulley 15b is rotated while being decelerated.

Also, Boo J15a. A wire 23 is stretched between the wires 15b, and a portion of the wire 23 is secured to the carriage 34, so that the carriage 34 is moved laterally via the υ wire 23 by rotation of the motor 35.

Thus, the first driving means of the present invention is composed of the motor 35 and forward and reverse pulse generating circuits 67, 69 (described in detail below) for driving the motor 35.

In addition, in FIG. 2, 60 is an upper end stopper attached to the guide rail-'2.

In FIG. 2 and FIG. 4 for explaining the operation of the ratchet mechanism 51 shown in FIG. On the other hand, a shaft 49 is rotatably attached via the shaft 30, a rack 53 formed on the shaft 49 and a ratchet gear 50 attached to the end of the lower shaft 25 constitute a ratchet mechanism 51, and when the solenoid 48 is energized, The shaft 49 is suction-moved in the opposite direction of arrow a, and the rack 53 of the shaft 49 rotates the ratchet gear 50 by one height, and at this time, the slider 13 is moved against the biasing force of the return spring 28, and the first
The row 54 shown in the figure is moved downward by an amount i.

Thus, the second drive means of the present invention is composed of the solenoid 48 and the ratchet gear 50.

Reference numeral 55 indicates a reversal prevention lever pivotally connected to a fixed pin 56, and reference numeral 58 indicates a biasing spring which is stretched between the shaft 49 and the prevention lever 55 so that the teeth of both are always engaged with the ratchet gear 50.

The reversal prevention lever 55 is configured to stop the return rotation of the ratchet gear 50 by the return spring 28,
51 is the return lever, and this is the shaft 6 of the release lens 59.
1, and when it is rotated counterclockwise, the spring 5
The ratchet gear 5 rotates the prevention lever 55 biased at 8 and the shaft 49 about the shafts 56 and 30.
0 is left open.

According to the above-described configuration, the carriage 34, in other words, the head, can be moved in the horizontal (row) direction by the rotation of the motor 35, and each time the solenoid 48 is energized, the slider 13, in other words, the head can be moved in the vertical (column) direction. ) can be moved one line in the direction.

Here, the head drive method for such a printing machine is generally one in which when a printing command is received, the head is first moved to a specified position and then prints.
There is a method of immediately moving the head to the next expected position as soon as printing is completed and waiting for the next printing command.
explain.

FIG. 5 shows an example of the circuit configuration of the printing/displaying device according to the present invention, and parts corresponding to those in FIGS. 1 to 4 are given the same reference numerals and redundant explanation will be omitted. .

□ In Fig. 5, 62 is a keyboard, and this keyboard usually includes a plurality of character keys 63, a space key 64, a backspace key 65, a column number designation key 75, and a row number designation key s, which will be described later. 5X and a slider position designation key 86.

A plurality of character keys 63 generate a signal Sl by pressing a key corresponding to each character.

The space key 64 and the backspace key 65 are used to generate a space signal S for obtaining the appropriate character or word spacing, for example, the space between words of English letters, by pressing these keys.
2 and a backspace signal S3, respectively,
The former is used when the head chip 44 moves in a positive direction, for example to the right, and the latter is used when the head chip 44 moves in a negative direction, for example to the left.

A normal rotation pulse generator 67 generates a normal rotation pulse P1 in response to the signal S1 or the space signal S2 supplied through the OR circuit 66.

A reverse pulse generator 69 generates a reverse pulse P2 in response to a backspace signal s3 supplied through an OR circuit 68 or a pulse P3 from a pulse generating circuit 18, which will be described later.

Reference numeral 70 denotes a motor driver, which drives the head drive step motor 3 in response to the forward rotation pulse P1 or the reverse rotation pulse P2.
, 5 in the forward or reverse direction.

Reference numeral 11 is a character code emitter, which generates a character code corresponding to the pressed character key.

A character generator 12 supplies a character signal to the head chip 44 through the driver 3 in response to a signal s4 from the motor driver 70 indicating that the step motor 35 has finished operating.

14 is a counter which counts the forward rotation pulse P1'' or the reverse rotation pulse P2 and generates a signal S corresponding to the counted number.

Reference numeral 75 is a column number designation key, and when this key is pressed, a signal S6 corresponding to a designated arbitrary number of columns among the number of horizontal columns of one frame is generated.

A comparison circuit 16 supplies a signal S7 to a pulse generation circuit 78 through an OR circuit 71 at a point where the signals S and S6 match, for example.

The pulse generating circuit 78 generates the pulse P3 until the count value of the counter 4 becomes zero.

A carriage return signal generating circuit 79 generates a signal S8 when it is desired to return the carriage 34 to its original position and start a new line when the carriage 34 is being driven to the right.

8° is a slider end signal generating circuit which generates a signal S9 when the slider 13 is lowered to the lowest position 1, and this signal S9 stops when the slider 3 leaves the lowest position ↓9.

Reference numeral 81 designates a one-line feed signal generation circuit, and a2 designates a one-frame feed signal generation circuit.
3 to generate the signals StO and S1□ at their outputs, respectively.

Reference numeral 85 is a line number designation key, and when this key is pressed, a signal S1° corresponding to a specified arbitrary number of lines, for example, 20 lines out of the number of vertical lines of the l frame, for example, 30 lines, is generated.

Reference numeral 86 is a slider position designation key, and when this key is pressed, a signal S13 is generated, and this signal S13 is logically processed in an AND circuit 87 together with a signal SIO to set the slider 13 to an arbitrary position (7)K used.

Reference numeral 89 denotes a pulse generation circuit for l steps, which generates a pulse P4 when the signal from the OR circuit 77 and the signal S1o from the one-line feed signal generation circuit 81 are supplied through the AND circuit 88.

91 is a step motor for supplying paper, and the pulse P
4 is supplied through the OR circuit 90, it is rotated by l steps.

Note that automatic operation is possible by connecting this step motor 91 to the knob T shown in FIG. 1 via a gear (not shown), etc. Therefore, it is possible to switch between manual and automatic paper supply by using an appropriate changeover switch. becomes.

A counter 92 responds to the output signal of the OR circuit 11, and generates a signal S14 corresponding to the count of the number of times the carriage 34 returns to its original position.

Reference numeral 93 denotes a coincidence circuit that generates an output signal when the signals S1° and S14 become equal, and 94 an OR circuit that generates an output signal when the output signal of the coincidence circuit 93 or the slider end signal s9 is supplied.

Reference numeral 96 denotes a pulse generation circuit for one frame, which responds to the output signal when the output signal of the OR circuit 94 and the signal S1□ from the one frame sending signal generation circuit 82 are supplied to the AND circuit 95. pulse P5 for one frame is generated.

Here, the output of the AND circuit 95 is the release solenoid 59
It is also being supplied to

Reference numeral 98 denotes a pulse generation circuit for l steps, which generates a pulse P6 in response to the output signal of the AND circuit 97 when the output signal of the OR circuit 77 and the signal Sll from the l frame sending signal generation circuit 82 are supplied to the AND circuit 97. , is supplied to the solenoid 48 through an OR circuit 99.

Next, the operation of the printing/displaying device according to the present invention constructed as described above will be explained.

First, the case where printing is performed on printing paper one sheet at a time will be explained.

(1) When the changeover switch 84 is turned on to the one frame sending signal generation circuit 82 side, the signal S1 is supplied from this circuit to each negative input terminal of the AND circuits 95 and 97.

Next, when character key 63 is pressed, signal Sl is generated and supplied to character code generator 71 and OR circuit 66.

In response to the output signal of the OR circuit 66, the forward rotation pulse oscillator 6T generates a pulse P1, and this pulse P1 is supplied to the motor driver 70 to rotate the head drive step motor 35 in the forward direction, that is, in the right direction. Move the step.

When the step motor 35 has finished moving, the motor driver 70 supplies the operation end signal S4 to the character generator 72, and a character signal corresponding to the character code from the character code generator 71 is applied to the head chip 44 through the driver 73. Printing is performed.

This operation is repeated for each character in sequence, and at this time the counter 14 counts the forward pulses P1.

When the count value of the counter 74 becomes equal to the number of columns preset with the column number designation key 75, for example, 80 columns or 136 columns, a signal S7 is supplied from the comparison circuit 16 to the pulse generation circuit 78 through the OR circuit 77. .

The pulse generating circuit 78 generates a pulse P3 before the count value of the counter 14 reaches zero and causes the reverse pulse generator to generate a pulse P2, thereby causing the step motor 35 to reverse and return the head chip 44 to its original position. Then, the printing operation for one line is completed.

If it is desired to maintain a predetermined spacing between characters or words, the space key 64 or backspace key 65 may be extended as appropriate.

Further, as described above, when the step motor 35 rotates forward and the head chips 44 reach the predetermined number of rows, the comparison circuit T6 generates the signal S7, but this signal S7 is further passed through the OR circuit 77 and then It is supplied to one input terminal of the circuit 97.

This AND circuit 97 has the other input terminal supplied with the signal Stt from the 1-OR-1 transmission υ signal generation circuit 82 in advance, so the gate is opened. A pulse P5 is supplied from the pulse generation circuit 98 for one step to the solenoid 48 through the OR circuit 99, and as a result, the ratchet mechanism 51 shown in FIGS. 2 and 4 operates, and the slider 13, that is, the head chips 4, It descends one line and prepares to start printing the next line.

By sequentially repeating such operations, a predetermined number of lines are printed. For example, when the slider 13 reaches the lowest position 1, a signal s9 from the slider end signal generator 80 is sent through the OR circuit 94 to one of the AND circuits 95. Supplied to the input end.

This AND circuit 95 opens the gate because the signal S is supplied in advance from the 1-frame feed signal generation circuit 82 to the other input terminal, and the release solenoid 59 is actuated to release the ratchet mechanism 51, and at the same time The pulse generation circuit 96 or pulse P5 is supplied to the paper supply step motor 91 through the OR circuit 90 to drive it, and as a result, the next frame of paper is supplied.

Here, set the number of lines at the bottom (if you set it to any number of lines,
If a predetermined number of lines is specified using the line number specification key 85, the counter 92 counts the number of times the carriage 34 returns to its original position, that is, the number of lines actually printed, so the count value When the number of lines matches the number of lines specified above, the matching circuit 93 generates an output signal, and the paper is fed in the same manner as described above.

In this way, when one frame of printing paper is supplied and the head chip 44 returns to its original position, the same printing operation is repeated from the beginning to print on each printing paper one by one.

Next, a case where printing is performed continuously, such as when dumping memory contents or creating a table, will be explained.

At this time, the slider 13 only needs to be fixed at a predetermined position, so there is no need to operate the solenoid 48, and the operation function of moving the head chip 44 in the row direction and printing is performed on one sheet of printing paper as described above. Since this is the same as the case of each case, the explanation thereof will be omitted.

1. When the selector switch 84 is turned on to the one line feed signal generation circuit 81 side, the signal S10 is output from this circuit to the OR circuit 77.
The output signal P4 is supplied to the AND circuit 88 to open the gate, and the signal P4 is supplied from the pulse generation circuit 8'9 for one step to the paper supply step motor 91 through the OR circuit 90.

As a result, the head chip 44 sequentially moves to the right and each time one line of printing is completed, the step motor 91 rotates one step at a time, and the printing paper moves one line at a time, making continuous printing possible. .

) When the slider 13 is set to an arbitrary position, if the slider position designation key 86 is pressed, the signal Sho is set to the AND circuit 8.
1, and this AND circuit 87 inputs the signal Sl from the line feed signal generation circuit 81 to the other input terminal in advance.
Since o is being supplied, the gate is opened and an output signal is supplied to the solenoid 48 through the OR circuit 99.

As a result, the solenoid 48 is actuated by the number of pulses corresponding to the number of rows at the predetermined position, and the slider 13 is thereby lowered at the predetermined position.

In the above-described operation, if you want to return the head chip 44 to the original position at an arbitrary position and start a new line without moving it to position 1, the number of columns specified by the column number designation key 75,
The same operation as described above can be achieved by supplying the signal S8 from the carriage return signal generator 79 through the OR circuit T7.

As is clear from the above description, the printing/displaying device according to the present invention can print on printing paper from the back side using a head chip without making any noise, and it is also possible to print on printing paper from the back side of the printing paper using a head chip. A display method equivalent to this can be easily and miniaturized without using an impact printer, and a display device that is cheaper than a conventional display device using a cathode ray tube or the like can be obtained.

Furthermore, it is possible to arbitrarily select whether to print for one frame or to print while feeding the printing paper sequentially like a teletype, which is extremely useful for this type of display device. Useful.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of one example of the present invention, Fig. 2 is an enlarged perspective view with a part of its interior cut away, Fig. 3 is a side view for explaining Fig. 2, and Fig. 4 is its ratchet mechanism. The side view of FIG. 5 is a block diagram of the driving circuit attached to the present invention. 1 is a housing, 2 is a transparent platen, 3 is a thermal printing paper, 9 is a front plate, 12a and 12b are guard rails, 13 is a slider, 21, 22 are support rods, 24° and 25 are upper and lower shafts, 28 is a return spring, 34 is a carriage, 35 is a navel)"l[K step motor, 44 is a head chip, ・48 is a solenoid ξ, 51 is a ratchet mechanism, 81 is a single line feed signal generation circuit, 86 is a slider position specifying key , 89 is a one-step pulse generation circuit, 91
is a step motor for paper supply.

Claims (1)

[Scope of utility model registration request] a carriage having a print head; a first support means for supporting the carriage movably in the row direction;
a second support means for movably supporting the carriage in the column direction together with the support means; a first drive means for driving the carriage in the row direction on the first support means; a second drive means for driving the carriage along with the support means in the column direction on the second support means; a second drive means having a large area such that the movement range of the carriage is arranged so as to face the print head; In the printing/display device, the first support means is placed on the second support means, and the first support means is placed on the second support means, and the first support means is placed on the second support means. a first control means for controlling the second driving means to stop the printing paper at a predetermined position in the direction; and a first control means for controlling the feeding means so as to intermittently feed the printing paper one line at a time in the column direction. A printing/displaying device further comprising a second control means.