KR100421030B1 - Paper feeding apparatus for inkjet facsimile - Google Patents

Abstract

[0003] The disclosed paper conveying apparatus of the inkjet facsimile includes a recording paper feeder for feeding a recording paper, a document feeder for feeding a document, and an ink cartridge for ejecting ink onto the recording paper to form an image, and perpendicular to the transfer direction of the recording paper. An inkjet facsimile paper conveying apparatus including a sliding carriage, the paper conveying apparatus comprising: a feeding motor for driving a recording paper conveying part and a document conveying part; . With this configuration, it is possible to selectively transport the recording paper and the original by one feeding motor.

Description

Paper feeding apparatus for inkjet facsimile}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a paper conveying apparatus for an ink jet fax, and more particularly, to a paper conveying apparatus capable of selectively conveying recording paper and documents.

In general, a facsimile refers to a device that reads and transmits information recorded on a document to a counterpart or receives information transmitted by the counterpart using a telephone line. Particularly, a facsimile machine prints the received information on a recording sheet. The facsimile used is called an inkjet type facsimile.

The inkjet printing method refers to a method of outputting an image by ejecting ink droplets onto a recording paper from an ink cartridge reciprocating in a direction perpendicular to the conveying direction of the recording paper while transferring the recording paper.

Therefore, in a conventional inkjet type fax machine, a driving device having three motors for conveying recording paper and originals and reciprocating sliding ink cartridges is employed.

1 shows a conventional inkjet facsimile driving device.

As shown in the drawing, a conventional inkjet facsimile driving device drives the automatic sheet feeder (ASF) roller 132 and the feed roller 131 to take out the recording paper S one by one from the cassette 133 and to feed at a constant speed. The ADF (automatic document feeder) roller 122 and the white roller 121 which draw the document D from the first feeder motor 130 and the stacker (not shown) one by one and move at a constant speed. A carriage motor 110 is mounted to drive the second feeding motor 120 and the ink cartridge 114 to drive the carriage 111 for reciprocating sliding in the direction perpendicular to the conveying direction of the recording paper S.

FIG. 2A shows a recording paper conveying operation by the sheet conveying apparatus of FIG.

As shown, the rotational force of the first feeding motor 130 is transmitted to the feed roller 131 via the gears indicated by the reference G1 to G5, and again through the gears indicated by the reference G4, G6 to G10 ASF roller ( 132). Here, the gear G7 is installed on the first swing arm 134 connected to the rotation axis of the gear G6, and rotates together with the first swing arm 134 according to the rotation direction of the first feeding motor 130 to be connected to the gear G8, or Departure from gear G8.

When the first feeding motor 130 rotates clockwise in the drawing, the first swing arm 134 rotates toward the gear G8 so that the gear G7 is connected to the gear G8 so that the first feeding motor 130 is connected to the ASF roller 132. Since the rotational force of the ASF roller 132 starts to transfer the recording paper S from the cassette 133. At this time, since the feed roller 131 rotates in the direction opposite to the feed direction of the recording paper S, the recording paper S transferred by the ASF roller 132 is stopped in contact with the feed roller 131. This is because the feed roller 131 is incompletely conveyed by the ASF roller 132 and the skew phenomenon occurs when the tip of the recording paper S does not enter the feed roller 131 at the same time. This is to correct the skew by preventing the recording paper S from being transported in the skewed state by rotating in the direction opposite to the conveying direction of the recording paper S, and aligning the tip of the recording paper S.

Again, when the first feeding motor 130 rotates counterclockwise in the drawing, the first swing arm 134 rotates away from the gear G8 so that the gear G7 is separated from the gear G8, so that the rotational force of the first feeding motor is ASF. It is not delivered to the roller 132. At this time, the feed roller 131 is rotated in the counterclockwise direction to transport the recording paper (S).

FIG. 2B shows a document transfer operation by the paper feed apparatus of FIG.

As shown, the rotational force of the second feeding motor 120 is transmitted to the ADF roller 122 and the white roller 121 via the gears indicated by reference numerals G11 to G19. Here, the gear G18 is installed on the second swing arm 123 connected to the rotation shaft of the gear G17, and rotates together with the second swing arm 124 according to the rotation direction of the second feeding motor 120 to be connected to the gear G19, or Departure from gear G19.

When the second feeding motor 120 rotates in the counterclockwise direction of the drawing, the second swing arm 124 rotates away from the gear G19 so that the gear G18 is separated from the gear G19 so that the rotational force of the second feeding motor 120 is reduced. It is not transmitted to the white roller 121. Therefore, the white roller 121 does not rotate. At this time, the ADF roller 122 rotates in the counterclockwise direction of the drawing to transfer the document D to the white roller 121, and the tip of the transferred document D is further rotated by the white roller 121 which does not rotate. As in the case of the transfer of the recording paper, the skew is corrected by aligning the leading end of the document D with the white roller 121 in the same manner as in the case of the transfer of the recording paper. Again, when the second feeding motor 120 rotates in the clockwise direction, the second swing arm 124 rotates toward the gear G19 so that the gear G18 and the gear G19 are connected, and the original S is driven by the white roller 121. Transferred.

At this time, in general, the ADF roller 122 is provided with a one-way clutch (not shown) for transmitting power in only one direction, so that the rotational force is applied to the ADF roller 122 even when the gear G15 rotates clockwise. This is not passed. Therefore, the ADF roller 122 rotates in the original conveying direction while rubbing against the original conveyed by the white roller 121 in a free state.

By the above-described configuration, it is possible to transfer the recording paper and the original without skewing.

However, such a paper conveying apparatus of an inkjet fax machine uses two motors capable of forward and reverse rotation to transfer originals and recording sheets without skew, which causes cost increase. That is, since the recording paper and the motor feeding the document are provided separately, a driver IC for driving the motor must be provided, and a high capacity power supply device is required to supply the power required to drive the two motors. .

Therefore, it is necessary to create a paper transfer apparatus capable of skew-free driving by forward and reverse rotation of the motor while driving the document feeder and the recording paper feeder using one motor.

SUMMARY OF THE INVENTION An object of the present invention is to provide a paper conveying apparatus of an inkjet facsimile, which is capable of conveying recording paper and originals without skew using one motor.

1 is a view showing a paper conveying apparatus of a conventional inkjet fax.

Fig. 2A is a diagram showing a recording paper conveying operation in the paper conveying apparatus of the ink jet fax shown in Fig. 1;

Fig. 2B is a view showing a document transfer operation in the paper transfer apparatus of the ink jet fax shown in Fig. 1;

Figure 3a is a perspective view showing a paper conveying apparatus of the ink jet fax of the present invention.

Figure 3b is an exploded perspective view showing the power switching means of the paper conveying apparatus shown in Figure 3a.

FIG. 3C is a perspective view showing the power switching means when the power switching means of FIG. 3B drives the document feeder; FIG.

Fig. 4A is a diagram showing a recording paper conveying operation in the paper conveying apparatus of the ink jet fax shown in Fig. 3A.

Fig. 4B is a view showing a document transfer operation in the paper transfer apparatus of the ink jet fax shown in Fig. 3A.

<Description of the symbols for the main parts of the drawings>

111 ...... Carriage 121 ...... White Roller

122 ...... ADF Roller 131 ...... Feed Roller

132 ...... ASF Roller 300 ...... Feeding Motor

310 ... 3rd swing arm 311 ... 1st protrusion

320 ...... Torsion spring 371 ...... Slope

The paper conveying apparatus of the inkjet facsimile of the present invention for achieving the above object is equipped with a recording paper conveying part for conveying a recording paper, a document conveying part for conveying a document, and an ink cartridge for ejecting ink onto the recording paper to form an image. An ink jet fax paper conveying apparatus comprising a carriage sliding in a direction perpendicular to the conveying direction of the recording paper, comprising: a feeding motor for driving the recording paper conveying unit and the document conveying unit; And a power switching means for selectively transmitting the rotational force of the feeding motor to the recording paper feeder or the document feeder.

Here, the power switching means, the first swing gear is power-connected with the feeding motor; A third swing arm mounted to the rotation shaft of the first swing gear; A second swing gear installed on the third swing arm to be connected to the first swing gear; An elastic member for applying an elastic force to the third swing arm in a direction in which the second swing gear is connected to the recording paper conveying portion; And rotating means for rotating the third swing arm in a direction opposite to the elastic force so that the second swing gear is connected to the document feeder according to the position of the carriage.

Therefore, it is possible to selectively transmit and drive the rotational force of the feeding motor to the recording paper feeder or the document feeder by using the elastic force of the elastic member and the rotating means for rotating the third swing arm in the opposite direction to the elastic force. In addition, since the rotation means uses the position of the carriage and is independent of the rotational direction of the feeding motor, once the rotational force of the feeding motor is transmitted to either the recording paper feeder or the document feeder, the feeding motor is switched clockwise or counterclockwise. It can rotate and skew-free driving is possible.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3A is a perspective view showing an embodiment of a paper conveying apparatus of the inkjet fax of the present invention, and FIG. 3B is an exploded perspective view showing a power switching means among them.

As shown in FIGS. 3A and 3B, the recording paper conveying unit 160 includes a feed roller 131, an ASF roller 132, a gear indicated by reference numerals G5 to G10, and a first swing arm 134. The document feeder 170 includes an ADF roller 122, a white roller 121, a gear and a second swing arm 124 indicated by reference numerals G14 to G19.

Here, the gear G4 or gear so that the rotational force of the feeding paper motor 300 for driving the recording paper feeder 160 and the document feeder 170 is selectively transmitted to either the recording paper feeder 160 or the document feeder 170. It is provided with a power switching means selectively connected to G14.

The power switching means includes a first swing gear G31, a second swing gear G32, a third swing arm 310, a torsion spring 320, and a rotation means.

The first swing gear G31 is installed between the feeding motor 300 and the second swing gear G32 to transfer the rotational force of the feeding motor 300 to the second swing gear G32. The first swing gear G31 may be installed on the third swing arm 310 together with the second swing gear G32 to be connected to the feeding motor 300.

The second swing gear G32 is installed on the third swing arm 310 and is in power connection with the first swing gear G31. When the third swing arm 310 rotates about the rotation axis of the first swing gear G31, the third swing arm 310 is selectively connected to the document feeder 170 or the recording paper feeder 160.

The third swing arm 310 is rotatably installed on the rotation shaft of the first swing gear G31 to swing between the document feeder 170 and the recording paper feeder 160.

The torsion spring 320 adds an elastic force to the third swing arm 310 in a direction in which the second swing gear G32 is connected to G4 of the recording paper transfer unit 160. The coil part 323 of the torsion spring 320 is inserted into the rotation shaft 381 of the first swing gear G31 as shown in FIG. 3B, and the first arm 321 is the third swing arm 310. And the second arm 322 is fixed to a chassis (not shown) in which the gears are installed, so that the second swing gear G32 is naturally connected to the recording paper transfer unit 160. In this embodiment, the torsion spring 320 is used, but may be a compression or tension coil spring.

Next, the rotation to rotate the third swing arm 310 in the direction opposite to the elastic force so that the second swing gear (G32) is connected to one of the recording paper transfer unit 160 and the document transfer unit 170 according to the position of the carriage. Means are provided.

The rotating means may include a first protrusion 311 extending in a direction facing the carriage 111 on the third swing arm 310 and an inclined surface extending so as to be inclined in a direction facing the first protrusion 311 ( And a carriage 111 having 371.

As the carriage 111 moves in the direction of the first protrusion 311, the inclined surface 371 and the first protrusion 311 come into contact with each other to move the third swing arm 310 in a direction opposite to the elastic force of the torsion spring 320. Rotate

The first protrusion 311 and the inclined surface 371 are not necessarily shaped as shown in FIGS. 3A and 3B, and the third swing arm 310 may rotate while contacting each other as the carriage 111 moves. It is enough if it is shape that we can.

The operation by the above-described configuration will now be described.

As described above, the third swing arm 310 is rotated toward the gear G4 about the rotation axis of the first swing gear G31 by the elastic force of the torsion spring 320 and the second swing gear G32 is initially. Is connected to the gear G4 to enable the drive of the paper sheet transport unit 160.

Fig. 4A shows a recording paper conveying operation by the sheet conveying apparatus according to the present invention.

As shown, when the feeding motor 300 rotates in the clockwise direction of the drawing, the first swing arm 134 rotates toward the gear G8 so that the gear G7 is connected to the gear G8 and feeds the motor 130 to the ASF roller 132. ASF roller 132 starts to transfer the recording paper S from the cassette 133, as the rotational force of the &quot; At this time, since the feed roller 131 rotates in a direction opposite to the feed direction of the recording paper S, the recording paper S conveyed by the ASF roller 132 is stopped in contact with the feed roller 131. This is because the feed roller 131 is incompletely conveyed by the ASF roller 132 and the skew phenomenon occurs when the tip of the recording paper S does not enter the feed roller 131 at the same time. This is to correct the skew by preventing the recording paper S from being transported in the skewed state by rotating in the direction opposite to the conveying direction of the recording paper S, and aligning the tip of the recording paper S.

Again, when the feeding motor 130 rotates counterclockwise in the drawing, the first swing arm 134 rotates away from the gear G8 so that the gear G7 is separated from the gear G8, so that the rotational force of the feeding motor is ASF roller 132. Not delivered to. At this time, the feed roller 131 is rotated in the counterclockwise direction to transport the recording paper (S).

When the recording paper S starts to be conveyed by the feed roller 131, ink is discharged from the ink cartridge 114 while sliding the carriage 11 in the direction perpendicular to the conveying direction of the recording paper S to form an image. .

Next, in order to drive the document feeder 380, the third swing arm 310 should be rotated toward the gear G14 so that the second swing gear G32 is connected to the gear G14. To this end, a first protrusion 311 is formed on the third swing arm 310 in a direction facing the carriage 111, and an inclined surface 371 is provided on the carriage 111 toward the first protrusion 311. Formed.

3C is a perspective view of the power switching means in the case of driving the document feeder.

As shown, when the document feeder 170 is to be driven, the carriage 111 moves toward the first protrusion 311. At this time, the first protrusion 311 is in contact with the inclined surface 371 formed on the carriage 111, the carriage is pushed in the direction opposite to the elastic force of the torsion spring 320 as the reference 400 moves. Accordingly, while the third swing arm 310 rotates toward the gear G14 about the rotation axis 381 of the first swing gear G31, the second swing gear G32 is connected to the gear G14 to rotate the feeding motor 300. The document transfer unit 380 is to be delivered.

When the feeding motor 300 is rotated and the document feed operation is started, the carriage 111 does not move until the document feed operation is completed, and the inclined surface 371 contacts the first protrusion 311 so that the second swing gear G32 is moved. To remain connected to the gear G14. This is because the second swing gear G32 is separated from the gear G14 by the elastic force of the elastic member 320 when the carriage 111 moves in the opposite direction to the reference numeral 400.

Further, the position where the carriage 111 is moved to connect the second swing gear G32 to the gear G14 is usually at a position beyond the width for reciprocating sliding to form an image on the recording paper S. Otherwise, while the image is formed on the recording paper S, the inclined surface 371 contacts the first projection 311 and the third swing arm 310 rotates in the G14 direction so that the power connection with the recording paper conveying section 390 is performed. Because it is broken.

4B illustrates a document transfer operation by the paper transfer apparatus according to the present invention.

As shown, when the feeding motor 300 rotates in the counterclockwise direction of the drawing, the second swing arm 124 rotates away from the gear G19 so that the gear G18 is separated from the gear G19 so that the rotational force of the feeding motor 300 is achieved. It is not transmitted to the white roller 121. Therefore, the white roller 121 does not rotate. At this time, the ADF roller 122 rotates counterclockwise to transfer the document D to the white roller 121, and the tip of the transferred document D is no longer rotated by the white roller 121 which does not rotate. As in the case of the recording paper conveyance, the skew is corrected by aligning the leading end of the document D with the white roller 121.

Again, when the feeding motor 300 rotates in the clockwise direction of the drawing, the second swing arm 124 rotates toward the gear G19 so that the gear G18 and the gear G19 are connected, and the original S is driven by the white roller 121. Transferred.

At this time, in general, the ADF roller 122 is provided with a one-way clutch for transmitting power in only one direction so that the rotational force is not transmitted to the ADF roller 122 even if the gear G15 rotates clockwise. . Therefore, the ADF roller 122 rotates in the original conveying direction while rubbing against the original conveyed by the white roller 121 in a free state.

Therefore, the recording paper S and the document D can be selectively driven by one feeding motor by the action of the carriage, and furthermore, the skew-free driving can be performed by forward and reverse rotation of the feeding motor.

As described above, according to the paper conveying apparatus of the ink jet fax according to the present invention, the following effects can be obtained.

First, it is possible to drive by a single feeding motor by selectively connecting power to the recording paper transfer unit or the document transfer unit can reduce the cost of the product.

Second, since the power is changed by the carriage irrespective of the rotation direction of the feeding motor, the feeding motor can be driven freely clockwise or counterclockwise, so that skew free driving, that is, recording paper and documents without skew, It is possible to transport.

It is to be understood that the invention is not limited to that described above and illustrated in the drawings, and that more modifications and variations are possible within the scope of the following claims.

Claims (3)

An inkjet including a recording paper feeder for feeding a recording paper, a document feeder for feeding a document, and a carriage for mounting an ink cartridge for discharging ink onto the recording paper to form an image, and sliding in a direction perpendicular to the transfer direction of the recording paper; Facsimile paper feeder, A feeding motor for driving the recording paper feeder and the document feeder; And And a power switching means for selectively transmitting the rotational force of the feeding motor to the recording paper conveying portion or the document conveying portion. According to claim 1, wherein the power switching means, A first swing gear connected to the feeding motor; A third swing arm mounted to the rotation shaft of the first swing gear; A second swing gear installed on the third swing arm to be connected to the first swing gear; An elastic member for applying an elastic force to the third swing arm in a direction in which the second swing gear is connected to the recording paper conveying portion; And And rotating means for rotating the third swing arm in a direction opposite to the elastic force so that the second swing gear is connected to the document feeder. According to claim 2, The rotating means, A first protrusion formed on the third swing arm and extending in a direction facing the carriage; And And a carriage having an inclined surface formed to be inclinedly extending in a direction facing the first protrusion.