JPH0123839Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a pen-type multicolor recording device suitable for X-Y plotters, graphic printers, alphanumeric printers, etc. The color change mechanism is simplified by using a power source for
It is an object of the present invention to provide a pen-type recording device which can be manufactured in a small size and at low cost, and which can easily and speedily modify already recorded data.

Conventional pen-type multicolor recording devices of this type, such as X
- In the Y printer, as shown in Fig. 1, a carriage 2 holding a single pen is mounted on a slide arm 1 so as to be slidable in the X direction, and this slide arm 1 is attached along a fixed arm 4. Tute, Y
It is installed so that it can slide freely in any direction. In order to perform a color change operation in this configuration, the slide arm 1 and the carriage 2 are driven to return the pen 3a currently held by the carriage 2 to the predetermined pen holding portion of the fixed arm 4, and then the slide By driving the arm 1 and the carriage 2, other pens such as pen 3 are
b was held in carriage 2. However, with this configuration, it is necessary to attach and detach the pen, which makes the mechanism (for attaching and detaching) complicated and complicated to control, and also takes up space, making it difficult to downsize and simplify the color changing mechanism.

Therefore, as shown in FIG. 2, the slide arm 7 carrying the carriage 6 that moves in the
It is also conceivable that a plurality of pens 5a, 5b, 5c may be attached to the pen to eliminate the need for attaching and detaching (changing the pen). In this case, there is no need to change the pen, but
In order to make a desired pen protrude in the direction of the paper surface on the carriage 6, a drive source (for example, an electromagnet) dedicated to each pen, or a common drive source for each pen and a switching drive source for selecting the color of each pen are used. This is an obstacle to making the cartridge smaller and lighter, and since each pen has a different position on the carriage 6, it is necessary to
control functions, etc. are required. In addition, in order to correct data once recorded in these recording devices, the recording paper must be replaced and the data must be recorded from the beginning again, which is a problem.

The present invention has been developed in view of the above points, and embodiments of the present invention will be described below with reference to FIGS. 3 to 14.

This embodiment shows a small graphics printer capable of printing alphanumeric graphics.
In the figure, 11 and 12 are side frames of the printer, and two guide shafts 1 are stretched between the side frames 11 and 12.
A carriage 15 is mounted on the recording paper 3 and 14 so as to be slidable across the surface of the recording paper 16. Both ends of a rope 17 are connected to both sides of the carriage 15, and the rope 17 is guided by pulleys 18 and its intermediate portion is wound around a drive pulley 20 of a pulse motor 19 that rotates in forward and reverse directions. There is. That is, as the pulse motor 19 rotates forward or reverse,
The carriage 15 is transported on guide shafts 13,14.

Reference numeral 21 denotes a platen that serves both as a marking stand and a paper feeder.Although the illustration is simplified, a gear fixed to the end of a shaft 22 that rotates integrally with the platen 21 is a pulse motor 23 that can rotate in forward and reverse directions for feeding the paper. The drive gear 24 is gear-coupled via a suitable intermediate gear. Further, the recording paper 16 held between the platen 21 and the auxiliary roller 25 (see FIG. 4) pressed by the platen 21 is conveyed in a direction perpendicular to the transport direction of the carriage 15 as the pulse motor 23 rotates. be done. Reference numeral 26 denotes a substantially cylindrical rotating drum made of synthetic resin, which is disposed between the front side plate 28 and the rear side plate 29, and is connected to the front side plate 28 as shown in FIG.
A support shaft 27 protruding from the rotary drum 26 is fitted into the center of the front surface of the rotary drum 26, and a protruding shaft 30 protruding from the center of the rear surface of the rotary drum 26 is fitted into the rear side plate 29, so that the rotary drum 26 can freely rotate. Supported by As shown in FIG. 6, on the outer periphery of the rotating drum 26, a plurality of pen sliding grooves 31 are provided at equal intervals on a circle centered on the central axis of the rotating drum 26 along the axial direction of the central axis. Both sides of each sliding groove 31 form pen holding protrusions 32. A plurality of pen means 34 are inserted into the pen sliding groove 31 so as to be able to protrude by a predetermined amount, and the pen means 34 may be an inexpensive refill for a ballpoint pen or a small-diameter felt pen impregnated with non-volatile ink. With a lightweight pen,
The recording data of each different color is transferred to the pen tip 3.
4a, the information can be written on the recording paper 16. Further, an erasing pen 60 (erasing pen means) is disposed in the pen sliding groove 31 together with the pen means 34 . As shown in FIG. 12, this erasing pen 60 has a guide main body 61 filled with a quick-drying erasing liquid 62, and a pen tip 63 soaked with the erasing liquid 62 at the tip of the main body 61 is slidable. Retained. When you want to erase recorded data, use the erase pen 6.
By moving the pen tip 63 to the position of the recorded data to be corrected and pressing the pen tip 63 onto the recorded data with a hammer (to be described later), the erasing liquid will adhere and the recorded data can be easily and quickly erased. Note that other embodiments of the erasing pen 60 include the thirteenth,
Erasing pens 64 and 65 as shown in FIG. 14 have also been devised. The erasing pen 64 has a guide body 66 filled with a quick-drying semi-solid substance 67 or white powder, etc. When erasing recorded data, a stamp 68 is slid and the semi-solid substance 67 is applied onto the recorded data. This is a structure in which the recorded data is covered up by being attached to it. The erasing pen 65 has sealing material 69 arranged inside the guide body 66, and when erasing recorded data, the sealing material 69 is arranged by sliding the stamp 68.
9 is attached on the recorded data. Note that 70 and 71 are return springs.

Reference numeral 33 denotes a ratchet (cam means) fixed to the end surface of the rotary drum 26 or formed integrally with the rotary drum 26, and the number of teeth formed at equal intervals is n times the number of the pen means 34 and the number of erasing pens 60 (n is natural numbers). Although the ratchet 33 is provided on the end surface of the rotating drum 26 in this embodiment, it may be provided on the circumferential surface of the rotating drum 26 depending on the case. Reference numeral 35 denotes a petal-shaped spring plate, and the center portion of the spring plate 35 is fixed to the protruding shaft 30 of the rotating drum 26, and each elastic arm 35a projects radially from the center portion, and the pen Holding the pen tip 34a of the means 34 or the tip 61a of the guide body 61 of the erasing pen 60, each pen means 34,
The erasing pen 60 is constantly pressed to the left in FIG. The pen nibs 34a, 63 pass through the elastic arms 35a, and by pressing the pen means 34 and the erasing pen 60 in the direction of the recording paper 16 against the elastic arms 35a, the pen nibs 34a, 63 are erased. It can come into contact with the recording paper 16.

36 is a hammer (pen pushing means) for pressing the pen means 34 and erasing pen 60;
A hammer shaft 37 (extrusion means drive shaft) supported between the shafts 12 and 12 is spline-coupled (structure capable of sliding freely in the axial direction but rotating integrally with the shaft). The hammer 36 partially attaches to the carriage 15.
It is constantly engaged with the groove part 38 of the front side plate 28 of
As the carriage 15 is transferred, the hammer 36 is also transferred together.

Further, the pressing surface 36a of the hammer 36 is connected to the pen means 34 whose rear end protrudes from the ratchet 33.
...The rear end of the pen means 34 or erase pen 60 at the print position or erase position, that is, at the top in the figure, is located at a position facing only the pen means 34 or erase pen 60 in the print position or erase position in the erase pen 60, As the hammer shaft 37 rotates, the pen means 34 or the erasing pen 60, which is in the printing position or the erasing position as shown in the fourth figure, is pressed against the recording paper 16 against the elastic arm 35a. ing. Reference numeral 39 denotes an electromagnetic plunger (electromagnet) which is a rotational drive source for the hammer shaft 37, and an end portion of the hammer shaft 37 is attached to a lever 40 attached to the operating rod 39a. Although not shown, the operating rod 39a is always pressed in the protruding direction by a spring, and when the electromagnetic plunger 39 is not energized, the hammer 36 is separated from the pen means 34 or the rear end of the erasing pen 60. The hammer 36 is connected via the hammer shaft 37 only when the electromagnetic plunger 39 is in an excited state.
is adapted to press the pen means 34 or the erasing pen 60.

Therefore, when the electromagnetic plunger 39 is energized,
That is, the pen means 34 or the pen means 3 of the erasing pen 60
4a, 63 are in moderate contact with the recording paper 16, the pulse motors 19, 2 are activated based on the print command.
3 to drive the carriage 15 and/or recording paper 1.
6, desired characters, charts, etc. (recorded data) are drawn on the recording paper 16, or the drawn characters, charts, etc. (recorded data) are erased.

As shown in FIG. 5, the entire movement area S of the carriage 15 is a pen selection (color change, erase pen selection) area S ₁
and print area (erase area) S ₂ , the print area
S ₂ indicates that the pen means 34 or erasing pen 60 is connected to the recording paper 16.
In this printing area _S2 , the rotating drum 26 is positioned in the rotational direction, and desired data is recorded as described above. On the other hand, the pen selection area _S1 is provided where the pen means 34 or the erasing pen 60 does not face the recording paper 16, and in this area, the rotating drum 26 can freely rotate.
A pen selection operation is performed by means described below.

Next, the positioning of the rotating drum 26 and the pen selection operation will be explained.

As shown in FIGS. 7 to 10, a groove 44 of a predetermined length is formed at the center of the lower surface of the carriage 15 along the axial direction of the rotating drum 26, and at the rear end (closer to the platen 21) of the groove 44. A rectangular through hole 45 is provided projecting from the lower surface to the upper surface of the carriage 15, and a lock member 46 is slidably inserted from the groove 44 into the through hole 45. The locking member 46 includes a rod-shaped portion 47 that is housed in the groove 44 of the carriage 15 and whose tip protrudes forward from the carriage 15, and a rod-shaped portion 47 that passes through the through hole 45 of the carriage 15 and protrudes from the upper surface of the carriage 15. It has an engaging portion 49 provided at its upper end with a recess 48 that engages with the pen holding protrusion 32 of the rotating drum 26.

As shown in FIGS. 7 and 9, a spring shaft 51 supporting a helical spring 50 is provided near the groove 44 on the lower surface of the carriage 15, and one end of the helical spring 50 protrudes from the carriage 15. The other end is in elastic contact with a support pin 52 provided thereon, and the other end is in elastic contact with a support pin 53 provided protrudingly from the rod-shaped portion 47 of the locking member 46. Therefore, the locking member 46 is urged toward the front frame 54 of the printer by the elasticity of the helical spring 50, and as the carriage 15 moves, the tip of the rod-shaped portion of the locking member 46 comes into sliding contact with the inner surface of the front frame 54. Near the side frame 11 of the front frame 54, that is, in the pen selection area _S1 , as shown in FIG. It is integrally formed with the front frame 54.

As shown in FIGS. 3, 5, and 9, the side frame 11
A feeding protrusion 41 (cam feeding means) made of a leaf spring is attached to the inner surface of the rotary drum 26 so that it can come into contact with the ratchet 33 of the rotating drum 26.

As mentioned above, in the printing area _S2 , the rotating drum 26
It is necessary to prevent the rotation and position it.
This positioning in the rotational direction is achieved by fitting the engaging portion 49 of the locking member 46 into one of the pen holding protrusions 32 on the rotating drum 26, as shown in FIGS. 6 to 8. I am treated well.

Then, the carriage 15 is transferred to the pen selection area _S1 , and as shown in FIG. The locking member 46 is pushed in the direction of arrow D against the elasticity, and as shown in FIG. 10, the engaging portion 49 of the locking member 46 separates from the pen holding protrusion 32, and the engagement between the two is released, allowing rotation. The drum 26 becomes rotatable.

Further, in this pen selection area _S1 , the ratchet 33 and the feed protrusion 41 can be freely engaged, and by moving the carriage 15 in the direction of arrow A as shown in _FIG . The protrusion 41 comes into contact with the ratchet 33 and rotates it in the direction of arrow C by an amount corresponding to one tooth. Therefore, after the carriage 15 is pulled back in the direction of arrow B, the carriage 15 is driven again in the direction of A. However, by rotating the ratchet 33, that is, the rotating drum 26, until the desired pen means 34 or erasing pen 60 comes to the printing position or erasing position, the pen means 34 or erasing pen 60 can be switched and selected. ing.
The drive source for switching and selecting the pen means 34 or the erasing pen 60 is performed by using the pulse motor 19 for transporting the carriage 15 and rotating it forward and backward by a predetermined amount. A separate drive source for switching the pen 60 is not required, and the switching means is extremely simple and compact.

In the figure, reference numeral 42 denotes a reversal prevention pawl that is pressed and engaged with the latch 33 by a spring 43, and after the feed protrusion 41 engages with the latch 33, the carriage 15 is transferred in the direction of arrow B in Fig. 5. The resistance generated when the feed projection 41 elastically deforms and overcomes the teeth of the ratchet 33 prevents the ratchet 33 from being reversed.

As detailed above, according to the present invention, by rotating a rotary drum on which a large number of pen means and erasing pen means are arranged, selection of printing pen means or erasing pen means, that is, color and erasing selection is performed. So pen selection is easy. Furthermore, since the rotating drum is rotated using the drive source for transporting the carriage, there is no need for a separate drive source for pen selection, and the color changing mechanism can be manufactured simply, compactly, and at low cost. Furthermore, the engaging means for positioning the rotating drum prevents the rotating drum from rotating in the print area (erasing area), and allows rotation of the rotating drum only in the pen selection area.

Furthermore, when correcting recorded data, the recorded data can be erased by selecting the position where the erasing pen means is provided and pressing the erasing pen means against the recording paper at the desired position to be corrected. , new data can be recorded at that location,
Desired data can be recorded and corrected appropriately.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram of the first conventional example, and Figure 2 is an explanatory diagram of the second conventional example.
3 to 12 show a pen-type multicolor recording device according to an embodiment of the present invention, and FIGS.
The figure is a partially simplified perspective view of the main part, Fig. 4 is a side view of the main part showing the printing state, Fig. 5 is an explanatory diagram showing the rotating state of the rotating drum, and Fig. 6 is an illustration of the rotating direction of the rotating drum. 7 and 8 are a bottom view and a sectional view showing the positional relationship between the rotating drum and the lock member in the printing area,
9 and 10 are bottom views and sectional views showing the positional relationship between the rotating drum and the lock member in the pen selection area, FIG. 11 is a perspective view of the lock member, and FIG.
2 is a sectional side view of the erasing pen, and FIGS. 13 and 14 are sectional side views of the erasing pen, respectively, relating to other embodiments of the erasing pen. 15...carriage, 16...recording paper, 26...
...Rotating drum, 32...Pen holding protrusion, 33...
Ratchet, 34...Pen means, 36...Hammer, 41...Feed projection, 46...Lock member, 4
9... Engaging portion, 54... Front frame, 56... Disengagement release stepped portion, 60, 64, 65... Erasing pen means, 6
2... Erasing liquid, 61, 66... Guide body, 67
... Semi-solid substance, 63 ... Pen tip, 69 ... Seal material, 68 ... Stamp.

Claims (1)

[Claims for Utility Model Registration] A pen-type recording device for obtaining desired recorded data by pressing a pen means mounted on a carriage against recording paper, comprising: (a) for transporting the carriage across the surface of the recording paper; (b) a paper transport means for transporting the recording paper in a direction perpendicular to the transport direction of the carriage; (c) a rotating drum rotatably held on the carriage; (d) (e ) pen pushing means for pushing out only the pen means at the printing position or the erasing pen means at the erasing position on the rotating drum toward the recording paper; (f) pen pushing means provided on the rotating drum and at regular intervals; cam means having feed teeth formed therein; (g) the area of movement of said carriage comprising a printing area and a pen selection area, in the printing area engaging a rotating drum to prevent rotation of the rotating drum;
(h) an engaging means that is disengaged from the rotating drum in the pen selection area and allows the rotating drum to freely rotate; cam feeding means for rotating the rotating drum, and in the pen selection area, the rotating drum is disengaged from the engaging means and the carriage is reciprocated a predetermined number of times. ,
A pen-type recording device characterized in that a desired pen means is positioned at the printing position or the erasing pen means is positioned at the erasing position.