JPS6211698A - Pen type recording device having pen change function - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] And blood clots! The present invention relates to a pen-type recording device that records characters, figures, etc. by relatively moving a pen and recording paper, and particularly relates to initialization in which a predetermined pen among a plurality of pens is positioned at a recording position in an initial state. It is something.

One type of conventional limb blood pen type recording device is known from Japanese Patent Application Laid-open No. 192188/1988.

This pen-type recording device includes a carriage and a pen holder. The carriage is moved by a small amount (both in the X-axis direction) relative to the recording paper supported on the paper support device.The pen holder is also rotated by the carriage around an axis approximately perpendicular to the recording paper on the paper support device. A plurality of pens are held at equal angular intervals on a circumference around the axis thereof, and any one of the pens is selectively moved to a predetermined recording position by rotational movement. Based on the relative movement of the carriage and the recording paper in the X-axis direction and the Y-axis direction perpendicular to the X-axis direction, characters 9, figures, etc. are recorded.

In this recording device, in setting an initial state (hereinafter referred to as initialization or initialization), a predetermined reference pen among a plurality of pens held in a pen holder is always positioned at the above-mentioned recording position. In order to achieve this, a ratchet mechanism for rotating the pen holder and a detection means for detecting a particular rotational position of the pen holder are provided. That is, a ratchet wheel is integrally provided on the pen holder, and each time the pen holder is moved to a side position away from the recording area, the claw member provided at the side position engages the ratchet wheel. When engaged, the pen holder is rotated by a predetermined angle, while a permanent magnet is provided in the pen holder and a magnetic force sensor is provided at the above-mentioned side position, and when the two face each other and the magnetic force sensor outputs a reference value. This is to detect that the pen is located at the recording position.

According to this, the reference pen can be positioned at the recording position by rotating the pen holder until the magnetic sensor outputs an output. Since detection means such as a permanent magnet and a magnetic force sensor are essential for detecting whether or not the device is positioned, there is a problem that the structure is complicated and the cost is high.

In order to solve the conventional problems in the initial setting of the pen, the present invention provides a pen-type recording device equipped with a carriage and a pen holder as described above. A plurality of protrusions provided integrally with the body and protruding from the pen holder at equal angular intervals around the axis of rotation of the pen holder;
2) a notch formed by removing all or part of one of the plurality of protrusions, and (3) a notch provided at a lateral position in the X-axis direction, and reciprocating the carriage with respect to the lateral position. The pen holder can be engaged with any one of the plurality of protrusions during at least one of the movements, and normally the engagement rotates the pen holder in one direction as the carriage moves, but when it corresponds to the notch, (4) a protrusion engaging means for positioning a predetermined one of the plurality of pens at the recording position without rotating the pen holder; and (4) the protrusion engaging means and the notch must correspond to each other. The present invention is characterized in that it includes a carriage movement control means for reciprocating the carriage with respect to the lateral position a fixed number of times.

Here, the plurality of protrusions provided integrally with the pen holder are an integral multiple of the number of pens held in the pen holder,
In particular, it is preferable that the number be the same as the number of pens, but if the predetermined pen is positioned at the recording position when the above-mentioned notch and protrusion engaging means correspond,
It is not essential that the number of protrusions is an integral multiple of the number of pens.

In addition, the protrusion engaging means engages with the protrusion of the pen holder during one of the reciprocating movements of the carriage, such as only when the carriage moves forward or only when it moves backward, and rotates the pen holder in one direction. However, in a preferred embodiment of the present invention, the protrusion engaging means is connected to the forward engaging portion and the backward engaging portion in order to rotate the pen holder in one direction both when the carriage moves forward and when the carriage moves backward. and an engaging portion.

The forward-side engaging portion engages with the protrusion only during forward movement and does not engage during backward movement, and the backward-side engagement portion engages only during backward movement and engages during forward movement. It's something you don't do.

Furthermore, the above-mentioned notch can be made to correspond to either the forward movement side engagement part or the backward movement side engagement part, but it corresponds to the forward movement side engagement part at the end of the forward movement of the carriage. It is desirable to make it possible.

In the pen-type recording device according to the present invention, when initializing the pen, the carriage reciprocates with respect to the lateral position in the By being moved, even if the pen holder is at a certain rotation angle position before the movement, the notch will be in a state corresponding to the protrusion engagement means after the movement, and in this state, the planned standard pen is positioned at the recording position.

Light 11 and Nine Fruits In this way, during the initial setting of the pen, the notch formed in one of the plurality of protrusions corresponds to the protrusion engaging means, so that the reference pen is positioned at the recording position. Since this is mechanically guaranteed, there is no need to provide detection means such as a permanent magnet or magnetic force sensor to detect whether the reference pen is located at the recording position, and the mechanism for initializing the pen is simplified. Cost reduction is possible compared to conventional methods.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a plan view of a pen-type typewriter, which is equipped with a keyboard section 2 as an input device at the front and a recording section 4 as a recording mechanism at the rear. In this figure, the cover of the recording unit 4 is cut away, and its mechanism is schematically shown. In the recording section 4, a pair of side plates 8, 10, which constitute a part of the main frame, are provided facing each other, and a cylindrical platen 12 is rotatably supported by the pair of side plates 8, 10. Platen 1
As is clear from FIG. 3, 2 is a paper pan 14. Presser roller 16. Paper guide 18 and paper pail 20
Together with these components, a paper support device 24 that supports the recording paper 22 in a curved manner along the outer peripheral surface of the platen 12 is configured. Further, as shown in FIG.
By being engaged with the pinion 32 fixed to the output shaft of
It can be rotated by any angle in both forward and reverse directions, and by this rotation, the recording paper 22 supported by the paper support device 24 is fed by an arbitrary amount in the Y-axis direction.

Parallel to the platen 12, two guide rods 34 and 36 are provided across the side plates 8 and 10, and these guide rods 34 and 36 allow the carriage 38 to be
is supported so as to be movable in the axial direction of the platen 12, that is, in the X-axis direction. Both ends of a wire 40 are connected to the carriage 38, and this wire 40 is connected to four guide pulleys 4.
2 and is also wound around a drive pulley 46 fixed to the output shaft of an X-axis stepping motor 44. Therefore, when the X-axis stepping motor 44 is rotated by an arbitrary angle in both forward and reverse directions, the carriage 38 is moved by an arbitrary amount in the X-axis direction. The limit of movement of the carriage 38 to the left in FIG. The left end movement limit at which this limit switch 48 of 38 is activated is set as the origin in the X-axis direction.

A drum 50 as a pen holder is mounted on the carriage 38.
is rotatably supported around a horizontal axis perpendicular to the axis of the platen 12, and four pens 52 are arranged at equal angular intervals on a circumference centered on the axis. It is held slidably in the axial direction. The four pens 52 have different ink colors, and the drum 50 has nine pens.
Each time the plane is rotated by 0 degrees, one of them is positioned at a recording position directly opposite the recording line scheduled on the platen 12, in this example, at the top of the drum 50 as shown in FIG. It is now possible to do so.

A pen hammer 54 is provided to face the rear end surface of the pen 52 positioned at this recording position. This pen hammer 54 is connected to the solenoid 5 via a hammer drive plate 56.
8, the pen 52 is moved between a down position and an up position, that is, a position where the pen tip contacts the recording paper 22 supported by the platen 12 and a position where it separates from it.

As is clear from the explanation up to this point, the recording section 4 of the present typewriter is configured to rotate the recording paper 22 based on the rotation of the platen 12.
One character is printed on the recording paper 22 by a combination of the movement of the pen 52 in the Y-axis direction based on the movement of the carriage 38, the movement of the pen 52 in the X-axis direction based on the movement of the carriage 38, and the up-down movement of the pen 52 based on the operation of the hammer drive plate 56. etc. are recorded in writing.

Each part will be explained in detail below.

As is clear from FIG. 3, the drum 50 is rotatably supported on a short shaft 62 and a boss 64 by the paper guide 18 and support protrusion 60, which are fixed to the carriage 38, respectively. The platen 12 of this drum 50
The side part is formed into a flat cylindrical shape, and four pen insertion holes 66 are formed in this cylindrical part, and a pen insertion groove 68 with an arcuate cross section is formed in the rear part of each pen insertion hole. 66 are formed continuously. Said 4 straddles the pen insertion hole 66 and the pen insertion groove 68.
A book pen 52 is each slidably inserted and biased by a return spring 70 via a common return plate 72 to the up position.

Further, the pen hammer 54 is connected to the carriage 38 by a shaft 74.
It is rotatably attached to the pen hammer 54.
The hammer drive plate 56 described above is disposed behind the hammer drive plate 56 and is rotatable about the axis of an integral shaft 76, and the shaft 76 is connected to the solenoid 58. Therefore, when pen hammer 56 is rotated counterclockwise in FIG. 3 by solenoid 58, pen hammer 54 is rotated in the same direction, so that pen hammer 54 returns pen 52 in the recording position to The pen 52 is pushed out to the down position against the force, and at this time, the return plate 72 is tilted at a predetermined angle to allow the pen 52 to move forward.

The end surface of the drum 50 on the platen 12 side is the face gear 78.
When the pinion 80 is engaged with the face gear 78, the pinion 80 can freely rotate around the vertical axis.
It is attached to 8.

This pinion 80 moves to the first position as the carriage 38 moves.
In the figure, the drum 50 is rotated by being engaged with a rack 82 provided near the right end of the platen 12, thereby rotating the drum 50 by 90 degrees and positioning any one of the four color pens 52 at the recording position. The writing color is appropriately selected by the pliers edge.

The rack 82 is moved by an actuator (not shown) between a position in which it engages with the pinion 80 and a position in which it does not engage with the pinion 80, and the rotation stop position of the drum 50 is determined by a positioning spring 84 shown in FIGS. 2 and 3. , is precisely defined by elastically engaging one of four V-shaped notches 86 formed on the outer peripheral surface of the drum 50.

In a portion of the drum 50 rearward from the cylindrical portion, a fourth
As is clear from FIG. 1, the four protrusions 90 are connected to the drum 50.
They are formed at equal angular intervals around the axis of rotation.

These protrusions 90 are located between the respective pens 52,
That is, from the portion between the adjacent pen insertion grooves 68, each of the four pens 5 has an equilateral triangular cross section.
They protrude radially with a phase difference of 2 and 45 degrees, and their respective tips are located on one circumference centered on the rotational axis of the drum 50.

Three of these four protrusions 90 are located on the drum 50.
Extending at the same height in the direction parallel to the rotational axis of the drum 50 throughout the remaining portion excluding the cylindrical portion, the remaining one protrusion 90 is perpendicular to the rotational axis. In addition, the hammer drive plate 56 side is removed with respect to the imaginary plane that substantially partially extends the protrusion 90 in the length direction, and the notch 92 is removed there.
It is said that The notches 92 are formed along a plane that is in contact with the outer peripheral surface of the pen 52 on both sides, and the protrusions 90 are completely removed in the height direction in the notches 92.

As shown in FIGS. 5 and 6, the four pens 52 are 1
They are held in order counterclockwise from the number 4 color to the number 4 color, but as shown in FIG.
A pen 52 of a number color (for example, black) is positioned at the recording position. In the initial setting of the pen, this state is always obtained.

Among the left and right side plates 8 and 10, the left side plate 8 has a seventh
As shown in the figure and FIG. 8, two engaging part forming members 10
0 and 102 are fixed, and both protrude inward in a direction parallel to the X-axis direction, which is the moving direction of the carriage 38, so as to function as protrusion engaging means. The carriage 38 supporting the drum 50 is reciprocated relative to the lateral positions where these engaging portion forming members 100, 102 are provided.

The engaging portion forming member 100 is formed in a stepped shape with a proximal end portion protruding upward, and the stepped portion serves as a first engaging portion 104 that functions as a forward engaging portion. The tip of the other engaging portion forming member 102 protrudes downward by a certain amount, and the protruding portion serves as a second engaging portion 106 that functions as a reciprocating side engaging portion. The second engaging part 106 is higher in the height direction than the first engaging part 104 (and, as is clear from FIG. 8, is higher than the first engaging part 104 in the horizontal direction perpendicular to the X-axis direction). It is located at a certain distance on the platen 12 side, and in the X-axis direction, is located closer to the first engaging portion 104 in the forward movement direction of the carriage 38.The tip of the engaging portion forming member 100 8, the third engaging portion 108 protruding upward is formed at a lower height than the first engaging portion 104, and as is clear from FIG. The second engaging portion 106 in the forward movement direction on a plane including
It is located further in front. This third engaging portion 108
is within the recording area of the carriage 38, but the first engaging portion 1
04 and the second engaging portion 106 are located at lateral positions outside the recording area. The first holding section 104 includes the drum 30
The second engaging portion 106 and the third engaging portion 108 can be adapted to the movement of the notch 92, and can be engaged with three protrusions 90 other than those formed with the notch 92. Since it is off the trajectory, it cannot engage with it, but
It is possible to engage with any of the four protrusions 90.

With any of the four pens 52 positioned at the recording position, the drum 50 is moved to the 4 ([1i1
When the protrusions 90 are in an X-shaped rotational position and are moved forward together with the carriage 38 toward the above-mentioned lateral position in this state, those protrusions 90 are in the X-shaped rotation position.
06 and the third engaging portion 108.

In other words, the heights of the second engaging portion 106 and the third engaging portion 108 are determined in this way. The first engaging portion 104 rotates the drum 50 counterclockwise in FIG. 7 by engaging with any of the three protrusions 90 other than the notch 92 near the end of the forward movement of the drum 50. , the second engaging portion 106 when the drum 50 moves backward,
The first engaging portion 104 engages with another protrusion 90 that is 180 degrees apart from the engaged protrusion 90, thereby further rotating the drum 50 in the counterclockwise direction. These first engaging portions 104 and second engaging portions 106 allow the drum 50 to rotate 90 degrees. Further, the third engaging portion 108 normally does not engage with any of the projections 90, but the third engaging portion 108 does not engage with any of the protrusions 90, but
If the rotational position of is not in the normal state before the forward movement described above,
In other words, when one of the pens 52 is not at one of the four rotational positions that would position it at the recording position, when the drum 50 moves forward, it engages with one of the four protrusions 90 to bring the rotational position of the drum 50 into the normal state. It plays a role in correcting.

Next, the keyboard section 2 will be explained based on FIG. The keyboard section 2 has a large number of alphabet keys 110. Symbol key 112. Including character/symbol keys such as number keys 114, space key 116. Return key 118. Many function keys such as a shift key 120 are provided. Further, a liquid crystal display 124 is provided at the upper center of the keyboard section 2, and is adapted to display data and the like that are entered manually using the keys. The right end of the keyboard section 2 is provided with various keys for selecting writing conditions such as print size and print line pitch, including a pliers edge key 126 which is a writing color selection key. The pliers edge key 126 is a key for selecting one of the four color pens 52, and based on its operation, the pinion 80 and the rack 82 engage with each other to select a desired color while using the typewriter. A pliers edge can be attached to the pen 52. 128 is a power switch.

FIG. 9 shows a control circuit that controls the recording section 4 in accordance with inputs from the keyboard section 2 as described above.

In the figure, 130 is a CPU (central processing unit),
This CPU has a keyboard section 2. Said limit switch 4
8 and a power switch 128 are connected via an interface 131. In addition, the CPU 130 has a ROM
(read only memory) 132 and RAM (random access memory) 134 are connected, and ROM 13
2 stores pattern data such as writable characters/symbols, graphs, figures, etc., as well as a program for controlling the overall operation of the typewriter. On the other hand, the RAM 134 includes a carriage position register 136 that temporarily stores the movement pitch number (X coordinate) based on the left end movement limit of the carriage 38 in the X-axis direction, and a carriage position register 136 that counts the number of actuations of the limit switch 48 during initial setting. switch counter 1
In addition to 38, various buffer memories, registers, counters, etc. necessary for program execution are provided.

Furthermore, the CPU 130 includes a carriage drive control circuit 14.
0. Platen drive control circuit 142. A hammer drive plate drive control circuit 144 and a display drive control circuit 146 are connected to an X-axis stepping motor 44. Y-axis stepping motor 30. A solenoid 58 and a liquid crystal display 124 are connected.

Then, the CPU 130 uses the temporary storage function of the RAM 134 and processes input signals from the keyboard section 2, etc. according to the program stored in advance in the ROM 132, and processes the input signals from the keyboard section 2, etc., to the drive control circuits 140, 142, 144,
46, each stepping motor 44, 30 and solenoid 58 are driven at a predetermined timing, and the liquid crystal display 124 is caused to perform a display operation.

Next, the operation in the initial setting of the pen, which is particularly relevant to the present invention, will be explained in the flowchart shown in FIG.
This will be explained with reference to the operation diagrams shown in FIGS.

First, when the power is turned on by the power switch 128 in step S1, step S2 is executed, and no matter where the carriage 38 is in the X-axis direction when the power is turned on, the direction, that is, toward the side plate 8 together with the drum 50.

Then, in step S3, it is determined whether the limit switch 48 that defines the left end movement limit of the carriage 38 is activated, and the carriage 38 continues to move while it is not activated.

For example, when the drum 50 is moved forward to the left in a state where it is not in the normal rotational position as shown in FIG. 11, in the process of forward movement, the third engagement portion 108 engages one of the four protrusions 90 to rotate drum 50 counterclockwise, as shown in FIG.
Correct 0 to the normal rotational position. However, it is rare for the drum 50 to be in a halfway rotational position like this, and usually it is in the normal rotational position as shown in FIG. 13 even before the forward movement, so in that case, the third engagement Portion 108 does not engage any of the protrusions 90.

Next, the drum 50 reaches the second engaging part 106, but during this forward movement, it passes under it and reaches the first engaging part 104, as shown in FIG. 14. At this time, as shown in FIG. 15, when the first engaging part 104 engages with any of the protrusions 90, the drum 50 is rotated counterclockwise as the carriage 38 moves forward, and the drum 50 is rotated approximately 30 degrees. At the stage of rotation, the carriage 3 contacts the detection part of the limit switch 48 and activates it. As a result, the determination result in step S3 becomes YES, and in the subsequent step S4, the drive of the X-axis stamping motor 44 is stopped, and the carriage 38 is stopped at its left end movement limit.

Subsequently, step S5 is executed, and the carriage 38 is turned back at this position and is reversely moved by t in the right direction (backward movement). This amount of movement t is set to a distance that is slightly larger than the separation distance between the first engaging part 104 and the second engaging part 106 in the X-axis direction, and the contents of the carriage position register 136 shown in FIG. The X-axis stepping motor 44 is driven until the compatibility is achieved. During this return movement, as shown in FIG.
Another protrusion 90 that is 180 degrees apart from the protrusion 90 that engaged with 4
engages with the second engaging portion 106, and as the carriage 38 moves back, the second engaging portion 104 rotates the drum 50 counterclockwise by approximately 60 degrees as shown in FIGS. 16 and 17. Can be rotated. After the carriage 38 and the drum 50 have moved the distance described above, they are stopped at the reference position shown in FIG. 18.

During one reciprocating movement of the carriage 38 as described above, the drum 50 is rotated counterclockwise by 90 degrees, that is, by an angle corresponding to the holding angular interval of the four pens 52. Therefore, if the third color pen 52 is positioned at the recording position in the state shown in FIG. 13, the second color pen 52 moves to the recording position. Then, the carriage 38 is further reciprocated one time from the state shown in FIG.
When rotated once, the pen 52 of the first color is positioned at the recording position as shown in FIG. 19, and at this time the aforementioned notch 92 is positioned at the lower left of the drum 50.

When the carriage 38 is reciprocated once again in this state, the first engaging portion 104 only corresponds to the notch 92 of the drum 50 and does not engage with the protrusion 90, as shown in FIG. The second engaging portion 106 maintains its rotational position without being rotated, and even during return movement.
By simply passing through, it returns to the aforementioned reference position as shown in FIG. As described above, the limit switch 48 has been activated three times, and as a result, the determination result in step S6 becomes YES. That is, the CPU 130 reads the count value of the switch counter 138 and compares it with a reference value (set number of actuations n=3), and if it determines that the two are equal, the reciprocating movement of the carriage 38 is terminated.

In this example, CPU 30 switches counter 138
, carriage drive control circuit 140. Together with the X-axis stepping motor 44 and the like, it constitutes a carriage movement control means that reciprocates the carriage 38 by the number of times that the notch 92 of the drum 50 always corresponds to the first mooring section 104.

Note that if the pen 52 of the fourth color is located at the recording position in FIG. 5 when the power is turned on, the drum 50 is moved 90 degrees at a time by three reciprocating movements of the carriage 3.8.
The first colored pen 52 is rotated 70 degrees counterclockwise.
is positioned at the recording position. Furthermore, if the pen 52 of the second color is in the recording position when the power is turned on, one reciprocating movement of the carriage 38 positions the pen 52 of the first color in the recording position, and the remaining two reciprocating movements position the pen 52 of the first color in the recording position. If the pen 52 of the first color is in the recording position from the beginning, it will be a blank feed all three times. In any case, carriage 3
8, the pen 52 of the first color is always positioned at the recording position, and the writing color is always set to the first color in the initial state. After such initialization of the pen, the carriage 38 is moved from the position shown in FIG. 21 to the left margin position as necessary, and is placed on standby in preparation for key input.

In the embodiment described above, the drum 50 is rotated in the same direction by approximately 30 degrees during the forward movement of the carriage 38 and approximately 60 degrees during the rhythmic movement; The first engaging portion 10
4 and a second engaging portion 106 may also be provided. Further, the third engaging portion 108 is not essential and can be omitted.

Further, instead of providing the same number of protrusions 90 as the pens 52 on the drum 50, it is also possible to form twice as many protrusions, for example eight protrusions. When providing such a relatively large number of protrusions, each protrusion is formed in a form similar to a ratchet tooth, and the first engaging portion 104 and the second engaging portion 106 are elastically deformed to overcome each of the protrusions. Alternatively, the drum 50 may be rotated in the same direction by one pitch when the carriage 38 moves forward and one pitch when the carriage 38 moves backward. In this case, the protrusion engaging means is connected to the drum 50 on either side of the reciprocating movement of the carriage 38.
It can also be made to rotate.

Further, in the embodiment shown in FIG. 1 etc., the pliers edge when using a typewriter is performed based on the engagement between the pinion 80 and the rack 82, but for example, the first engaging portion 104 is , a first corresponding to the notch 92
position, and the second engaging portion 10 deviates from the movement trajectory of the notch 92.
6 and a second position located on the same plane, and by reciprocating the carriage 38 with the first engaging portion 104 positioned at the second position, the normal pliers edge can be It is also possible to have it performed.

Although not described in detail, it goes without saying that the present invention can be implemented with various modifications based on the knowledge of those skilled in the art.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway schematic plan view of a pen-type typewriter according to an embodiment of the present invention, and FIG. 2 is a perspective view showing a recording section thereof taken out. FIG. 3 is a side sectional view showing the vicinity of the carriage of the recording section, and FIG. 4 is a perspective view showing the drum as a page holder taken out from FIG. 2. FIG. 5 is a front view schematically showing the form of the protrusions formed on the drum, and FIG. 6 is a simple front view of the drum with the protrusions removed. FIG. 7 is a perspective view schematically showing the relationship between an example of the protrusion engaging means and the drum, and FIG. 8 is a plan view thereof. FIG. 9 is a block diagram showing the control circuit of this typewriter, and FIG. 10 is a flowchart showing the pen initialization routine. FIGS. 11 to 21 are operation diagrams showing different operating states over time during pen initialization. 2: Keyboard section 4: Recording section 8.10: Side plate 12 Nibraten 22: Recording paper 24: Paper support device 30: Y-axis stepping motor 38: Carriage 44: X-axis stepping motor 48: Limit switch 50 Ni drum (pen holder) 52: Pen 54: Pen hammer 56: Hammer drive plate 90: Protrusion
92: Notch 100.102: Engagement portion forming member (protrusion engagement means) 10
4: First engaging part (forward engaging part) 106: Second engaging part (returning engaging part) 108: Third engaging part 128: Power switch 130:
CPU (Central Processing Unit) 132: ROM (Read Only Memory) 134: RAM
(Random access memory) 138: Swiss counter

Claims (6)

[Claims] (1) A carriage that is movable in at least the X-axis direction with respect to the recording paper supported by the paper support device, and supported by the carriage so as to be rotatable around an axis substantially perpendicular to the recording paper on the paper support device. A pen in which a plurality of pens are held at equal angular intervals on a circumference centered on the axis, and any one of the pens is selectively positioned at a predetermined recording position by rotational movement. a holder, and records characters, figures, etc. based on relative movement of the carriage and the recording paper in the X-axis direction and the Y-axis direction perpendicular to the X-axis direction, the pen A plurality of protrusions that are provided integrally with the pen holder and protrude from the pen holder at equal angular intervals around the axis of rotation thereof, and one of the plurality of protrusions is removed in whole or in part. A notch formed by The engagement causes the pen holder to rotate in one direction as the carriage moves, but when the pen holder corresponds to the notch, a predetermined one of the plurality of pens is rotated without rotating the pen holder. a projection engaging means for positioning the projection engaging means at the recording position; and a carriage movement control means for reciprocating the carriage with respect to the lateral position a certain number of times such that the projection engaging means and the notch always correspond to each other. A pen-type recording device equipped with a pliers edge function. (2) The recording device according to claim 1, wherein the plurality of protrusions are provided in a number corresponding to an integral multiple of the plurality of pens. (3) The recording device according to claim 2, wherein the plurality of protrusions are provided in the same number as the plurality of pens. (4) The protrusion engaging means includes a forward engaging portion that engages with one of the plurality of protrusions to rotate the pen holder when the carriage moves forward, and a forward engaging portion that rotates the pen holder when the carriage moves backward. a backward-moving side engaging part that engages with the protrusion of the pen holder to rotate the pen holder in the same direction as in the forward movement, and the backward-moving side engaging part is smaller than the forward-side engaging part in the forward movement direction. Although it is located at the front, it does not engage with any of the plurality of protrusions during forward movement, and on the other hand, the forward movement side engagement part is located near the turning position from the forward movement to the backward movement of the carriage, Claim 1, which can correspond to the notch at the end of forward movement.
The recording device according to any one of Items 1 to 3. (5) A patent in which the forward-side engaging portion and the backward-side engaging portion rotate the pen holder by an angle corresponding to the pen holding angular interval thereof during one reciprocating movement of the carriage. A recording device according to claim 4. (6) The notch is formed by cutting out only one side of one of the plurality of protrusions with respect to a virtual plane perpendicular to the rotational axis of the pen holder, and the protrusion is left on the other side. Claim 4 or 5, wherein the notch is adapted to engage with the forward engaging portion, and the remaining protrusion is capable of engaging with the backward engaging portion. recording device.