JPH03161368A - Recording device - Google Patents

Abstract

PURPOSE:To enable recording paper to be cut and fed at high speed with a simple structure by providing a constitution in which a drive gear with a toothless part present on the periphery rotates with a cutter driver and a delivery roller connected to the drive gear rotates. CONSTITUTION:A driven gear 27 is rotated by rotation of a motor for cutting 30 and the rotation of a drive pin 43 is interlocked with the rotation of the driven gear 27. Therefore, the drive pin 43 moves through the interior of a slit 41 in an arm 42 and causes a movable frame 40 to move back and forth during the movement of the former. That is, the movable frame 40 rotates to a cutting direction until the drive pin 43 rotates almost 180 deg., then returns to its home position during the remaining 180 deg. movement. After that, a cutter becomes engaged with a fixed blade 24 following the driving of the movable frame 40. A delivery roller 35 is not driven by a drive gear 31 due to its toothless part 33 until recording paper 21 is completely cut. After cutting the paper, a delivery roller gear 34 becomes engaged with the drive teeth 32 of the drive gear 31 to drive the delivery roller 35, and thus the cut recording paper 21 is delivered.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a recording apparatus equipped with a cutter that is driven to cut recording paper by rotation of gears.

2. Description of the Related Art In general, a recording apparatus equipped with a cutter is provided with a discharge roller for discharging the recording paper cut by the cutter. Therefore, it is necessary to perform two operations: cutting the recording paper and ejecting the cut recording paper.
During cutting, the recording paper must be stopped, and the operations of the two mechanisms must have a certain timing lag.

For this reason, a first conventional example will be explained based on FIG. 5. First, a cutting device 2 is provided in the path of the recording paper 1. The cutting device 2 includes a fixed blade 3 fixed to a frame, and a cutter 4 that rotates and meshes with the fixed blade 3 to cut the recording paper 1. and,
This cutter 4 is attached to a driving body 5, and a passive gear 6 is integrally attached to this driving body 5. A cutting motor 9 is connected to the passive gear 6 via an idler gear 7 and a motor gear 8.

Further, a discharge roller 10 and a pinch roller 11 are provided on the discharge side of the recording paper l of the cutting device 2,
The discharge roller 10 is integrally provided with a discharge port gear l2. A discharge motor 1 is connected to the discharge roller gear 12 via an idler gear 13 and a motor gear 14.
5 are connected.

In such a configuration, the cutter 4 of the cutting device 2 and the ejection roller 10 are driven independently by separate cutting motors 9 and ejection motors 15, respectively, so that the cutter 4 removes the recording paper l. While cutting, the discharge roller 10
Drive control such as stopping the feeding of the recording paper 1 can be easily performed.

Next, a second conventional example will be explained based on FIG. 6.

The same parts as those described with reference to FIG. 5 will be described using the same reference numerals. That is, the cutting motor 9 shown in FIG.
In the structure from the cutting motor 9 to the cutting device 2, a one-way clutch (not shown) is provided between the passive gear 6 and the drive body 5, and a one-way clutch (not shown) is provided on the discharge roller 10. A discharging roller gear 16 is connected via a one-way clutch (not shown), and the discharging roller gear 16 is coupled to the passive gear 6 via an idler gear 17.

In such a configuration, when the cutting motor 9 rotates normally, the cutter 4 rotates and cuts the recording paper 1, but at this time, the ejection roller 10 is not rotating. That is, cutting is performed while the recording paper 1 is stopped. When the cutting motor 9 is rotated in the reverse direction after the cutter 4 is rotated once in this manner, the discharge roller 10 rotates while the cutter 4 remains stationary, thereby feeding out the cut recording paper 1.

In the case of the first conventional example shown in FIG. 5, the drive of the cutting device 2 and the drive of the discharge roller 10 are separate systems, so the structure is complicated. The problem is that it is expensive.

In addition, in the case of the second conventional example shown in FIG.
When cutting, the discharge roller 10 cannot be rotated until the cutter 4 has rotated once, which requires a long time, cannot increase the speed, and requires a clutch mechanism, so the structure is poor. The problem is that it is complicated and expensive.

Means for Solving the Problems A cutter that cuts the recording paper in a direction perpendicular to the feeding direction of the recording paper, a drive body connected to a motor that rotates in one direction and drives the cutter, and a part of the outer periphery. The drive gear includes a drive gear that has a toothless portion without drive teeth and rotates together with the drive body, and a discharge roller that rotates while being connected to the drive gear/wheel.

To cut the recording paper, the drive body that drives the cutter rotates once, but since the drive gear that rotates with the drive body has missing teeth, there is a range in which the ejection roller does not rotate while the drive gear is rotating. This allows you to use the cutter return section after cutting to feed the recording paper without feeding the recording paper during cutting, which allows you to cut and feed the recording paper at high speed. It has a simple structure and can be driven by a motor that rotates in one direction.

Embodiment A first embodiment of the present invention will be explained based on FIGS. 1 to 3. First, a cutting device 22 is provided in the path of the recording paper 2l. This cutting device 22 rotates with a fixed blade 24 fixed to a frame 23, thereby cutting off the fixed blade 24.
4 and a cutter 25 that cuts the recording paper 21 by meshing with the cutter 25. This cutter 25 is attached to a drive body 26, and a driven gear 27 is integrally attached to this drive body 26. This passive gear 27 has an idler gear 2.
A cutting motor 30 is connected via 8 and a motor gear 29. Thus, the drive body 26 is integrally provided with a cantering gear 3l.

A drive tooth 32 and a toothless portion 33 in which the drive tooth 32 is not provided are formed on the outer periphery of the drive gear 3l. A discharge port gear 34 is meshed with this drive gear 31, and this discharge port gear 34 is connected to the discharge roller 3.
5 is fixed to the end of a fixed discharge shaft 36. Further, a pinch roller 38 supported by a pinch roller shaft 37 is connected to a drive unit (not shown) in the discharge port roller 35 so as to move toward and away from the discharge roller 35 with a constant pressure.

In such a configuration, the recording paper 21 is fed out by an internal feeding mechanism and inserted between the fixed blade 24 and the cutter 25, but since the pinch roller 38 is spaced apart from the ejection roller 35, pass between them. and,
When the recording paper 21 reaches the position where it should be cut, the recording paper 2l stops, and the cutting motor 30 starts to move the cutter 2.
5 toward the fixed blade 24 to cut the recording paper 21. Further, the pinch roller 38 is pressed against the discharge roller 35.

When the recording paper 21 is cut, the discharge roller gear 34 does not mesh with the drive teeth 32 of the drive gear 31. Therefore,
While the drive gear 31 rotates by an angle corresponding to the range of the toothless portion 33, the discharge roller 35 does not rotate. That is,
During this time, the recording paper 21 is cut as described above. Then, when the cutting of the recording paper 21 is completed and the drive teeth 32 of the drive gear 3l mesh with the ejection roller gear 34, the ejection roller 35 is driven, whereby the cut recording paper 2I is sent out and ejected. It is released from the contact portion between the roller 35 and the pinch roller 38. This feeding operation of the recording paper 2l continues until the cutter 25 returns to the home position.

Then, the pinch roller 38 separates from the discharge roller 35 and waits for the recording paper 21 to be sent out next.

Note that, as shown in FIG. 3, the discharge roller 35a may have an elliptical cross-sectional shape, and the pinch roller 38 may be provided in a fixed position. In this case, when the short diameter part of the ejection roller 35a faces the pinch roller 38 as shown in the figure, there is a gap between the two, so that the recording paper 21 is inserted and fed by the ejection roller 38. This is performed intermittently by the long diameter portion of 35a facing the pinch roller 38.

Next, a second embodiment of the present invention will be described based on FIG. The same parts as in the previous embodiment are designated by the same reference numerals, and the description thereof will be omitted. This embodiment differs in the structure of the cutting device 22. That is, the cutting device 22 in this embodiment includes a movable frame 40 that rotates around a shaft 39 on the frame 23.
The cutter 25 is fixed to the movable frame 40. The movable frame 40 has elongated holes 4
1 is integrally formed, and a drive pin 43 provided on the driven gear 27 is engaged with the elongated hole 41 of this arm 42.

In such a configuration, when the cutting motor 30 rotates, the passive gear 27 rotates, and the drive bin 43 also rotates. Therefore, the drive pin 43 is connected to the elongated hole 41 of the arm 42.
The movable frame 40 is rotated back and forth while moving inside.

That is, the movable frame 40 rotates in the cutting direction until the drive pin 43 rotates approximately 180 degrees from the state shown by the solid line in the figure, and the movable frame 40 rotates the remaining 180 degrees.
return to its original position.

As the movable frame 40 is driven, the ejection roller 35 is driven by the toothless portion 33 of the drive gear 3l until the cutter 25 engages the fixed blade 24 and finishes cutting the recording paper 21. There is no discharge roller gear 3 after cutting.
4 meshes with the drive teeth 32 of the drive gear 32 to drive the discharge roller 35 and discharge the cut recording paper 21.

In each of the above embodiments, the drive gear 3l is provided integrally with the drive body 26, but in actual practice, the two may be formed separately and connected by a gear or the like. .

Effects of the Invention As described above, the present invention includes a cutter that cuts the recording paper in a direction perpendicular to the feeding direction of the recording paper, and a drive body connected to a motor that rotates in one direction and drives the force vine. , consists of a drive gear that has a toothless part with no drive teeth on a part of its outer periphery and rotates together with the drive body, and a discharge roller that is connected to this drive gear and rotates, so that a cutter is used to cut the recording paper. The drive gear that rotates with the drive body has a missing tooth, so it is possible to set a range within which the discharge port roller does not rotate while the drive gear is rotating. As a result, the recording paper is not fed during cutting, but the recording paper can be fed using the return section of the cutter after cutting.Therefore, the recording paper can be cut and fed at high speed. Its structure is simple, and it has advantages such as being able to be driven by a motor by rotating in one direction.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a first embodiment of the present invention, FIG. 2 is a perspective view thereof, FIG. 3 is a side view showing a modified example of the discharge roller section, and FIG. 4 is a side view showing a second embodiment of the present invention. Side view showing the embodiment, fifth
The figure is a side view showing a first conventional example, and FIG. 6 is a side view showing a second conventional example. 21...Recording paper, 25...Cutter, 26...Driver, 30...Motor, 31...Drive gear, 32...
・Cantering tooth, 33... Missing tooth part, 3 5・ Discharge roller 0

Claims (1)

[Claims] A cutter that cuts the recording paper in a direction perpendicular to the feeding direction of the recording paper, a drive body connected to a motor that rotates in one direction and drives the cutter, and a missing tooth with no drive teeth on a part of the outer periphery. 1. A recording apparatus comprising: a drive gear that rotates together with the drive body; and a discharge roller that rotates while being connected to the drive gear.