JPH0523664U - Read / write device - Google Patents

Abstract

(57) [Summary] [Purpose] The number of rollers is reduced by discharging the recording paper after cutting using an ADF roller that sucks the original. An ADF roller 19 is provided in a reading / writing device that uses a single platen roller 13 to read information on a document 11 by a reading sensor 14 and write information to a recording paper 12 by a print head 15. The document is separated and sucked for automatic sheet feeding by using, and the recording paper 12 cut by the cutter 18 after printing by the print head 15 is discharged by the ADF roller 19.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a reading / writing device for reading information in a document and writing information on a recording paper in a facsimile machine, and more particularly to a structure for sucking a document and discharging the recording paper.

[0002]

[Prior Art]

 FIG. 3 is a block diagram showing an example of a reading / writing device in a conventional facsimile device or the like.

This reading / writing device is a device for reading information on the original 1 and writing information on the recording paper 2 with a single platen roller 3, and a reading sensor sandwiching the platen roller 3 between them. 4 and the print head 5 are arranged at symmetrical positions. The reading sensor 4 has a function of optically reading information on the original 1, and the print head 5 is composed of a thermal head and has a function of writing information on the recording paper 2. The platen roller 3 has a function of pressing the original 1 at the reading point of the original 1 and sending it in the A direction, and a function of pressing the recording paper 2 at the writing point on the recording paper 2 and sending it in the B direction. have.

Next, the operation will be described. The original 1 is sandwiched between the reading sensor 4 and the platen roller 3, and is read by the reading sensor 4 at that position, and at the same time, the platen roller 3 is rotated to read and move line by line in the A direction. Then, this operation is repeated. The recording paper 2 is sandwiched between the print head 5 and the platen roller 3, and writing is performed by the print head 5 at that position, and at the same time, the platen roller 3 rotates to write and move line by line in the B direction. To be done. Then, this operation is repeated. Further, by performing the above-mentioned reading and writing operations at the same time, it is possible to write the information on the recording paper 2 while reading and moving the information on the original 1.

[0005]

[Problems to be solved by the device]

 However, the device having the above configuration has the following problems. The conventional reading / writing device has an advantage that the paper feeding mechanism is simplified because the reading of the information on the original 1 and the writing of the information on the recording paper 2 are performed by using one platen roller 3. is doing. However, since the recording paper 2 after writing is not cut using a cutter, the structure is simple, but the recording paper 2 on which information has been written must be cut by an operator. However, it was disadvantageous and inconvenient. In addition, since there is no automatic paper feed mechanism for the originals 1, the originals 1 have to be manually fed one by one, which is not convenient.

Therefore, as another conventional apparatus, there has been proposed a reading / writing apparatus provided with an automatic paper feeding mechanism and a cutting mechanism for the original 1. This type of device has an automatic paper feed mechanism and a cutting mechanism, which improves usability. However, since a roller for automatically feeding the original 1 and a roller for discharging the cut recording paper 2 are provided one by one, a plurality of rollers are required. However, there was a problem that the structure was complicated and the cost was high, and it was difficult to solve it.

The present invention provides a reading / writing device which solves the problem that the conventional technique has such that the structure becomes complicated when an automatic paper feeding mechanism and a cutting mechanism are provided.

[0008]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides a platen roller that conveys a document and recording paper, a reading sensor that grips the document together with the platen roller, and reads information in the document, and a platen roller together. The recording paper is provided with a print head that sandwiches the recording paper and writes information on the recording paper under a pressure applied to the platen roller, and a cutter that cuts the recording paper on which information has been written by the print head. In a reading / writing device, it is arranged at the entrance side of the reading sensor and the exit side of the cutter, and automatically sucks the above-mentioned original document to separate and supply it to the reading sensor, and ejects the recording paper after cutting. An original-feeding (auto-document-feeder, hereinafter referred to as ADF) roller is provided.

[0009]

[Action]

 According to the present invention, since the reading / writing device is configured as described above, one ADF roller performs document separation and suction for automatic paper feeding, and a cutter after recording by the print head. Works to eject cut recording paper. As a result, the ADF roller for automatic paper feeding can be commonly used for discharging recording paper after cutting, and the number of ADF rollers can be reduced. Therefore, the above problem can be solved.

[0010]

【Example】

 FIG. 1 is a block diagram of a reading / writing apparatus such as a facsimile apparatus according to an embodiment of the present invention.

The reading / writing device is a device for reading information on the original 11 and writing information on the recording paper 12 by using one platen roller 13, and sandwiches the platen roller 13. The read sensor 14 and the print head 15 are arranged at symmetrical positions. The reading sensor 14 has a function of optically reading information on the original 11. The print head 15 is composed of, for example, a thermal head, one end of which is vertically rotatably supported by a fulcrum shaft 15a, and the weight of the print paper 12 presses the recording paper 12 against the platen roller 13 to write information on the recording paper 12. have. The platen roller 13 presses the original 11 at the reading point of the reading sensor 14, sends the original 11 to the discharge port 16 in the A direction, and presses the recording paper 12 at the writing point of the print head 15 to press the recording paper 12. Has a function of sending the B to the discharge port 17 in the B direction.

A cutter 18 that cuts the recording paper 12 on which information has been written by the print head 15 is provided on the outlet side of the print head 15. An ADF roller 19 is provided on the inlet side of the reading sensor 14 and the outlet side of the cutter 18, and a separator 20 and a pinch roller 21 are arranged on the outer periphery of the ADF roller 19 in contact with the ADF roller 19. The ADF roller 19 has a function of feeding the original 11 in the A direction while automatically feeding the document 11, and also has a function of a discharge roller for feeding the recording paper 12 cut by the cutter 18 in the B direction and discharging the recording paper 12. is doing. When a plurality of originals 11 are supplied, the separator 20 has a function of separating them and sending only one original 11 to the platen roller 13 side. The pinch roller 21 has a function of moving the recording paper 12 in the B direction without slipping when the recording paper 12 is discharged by the rotation of the ADF roller 19.

FIG. 2 is a configuration diagram showing an example of a drive mechanism for the pinch roller 21 and the ADF roller 19 in FIG. This drive mechanism is provided with a pulse motor 30 that rotates normally or reversely, and the platen roller 13 is directly connected to the pulse motor 30. The pulse motor 30 is connected to a first drive transmission mechanism 31 including a gear that transmits the reverse rotation of the pulse motor 30 to rotate the ADF roller 19 in the forward direction R, and the pulse motor 30. Is connected to a second drive transmission mechanism 32 that is a gear that transmits the positive rotation of the ADF roller 19 to rotate the ADF roller 19 in the positive direction R.

A first one-way clutch 33 that rotates only in the forward direction R via the drive transmission mechanism 31 is attached to the first drive transmission mechanism 31, and the second drive transmission mechanism 32 is further connected to the second drive transmission mechanism 32. A second one-way clutch 34 that rotates only in the forward direction R via the drive transmission mechanism 32 is attached.

Next, each operation of transmission (1), reception (2), and copy (3) will be described. (1) Sending Operation When the document 11 is read by the reading sensor 14 for sending, the print head 15 is supported by its fulcrum shaft 15a and held while being separated from the platen roller 13. The original 11 is inserted between the ADF roller 19 and the separator 20, and the pulse motor 30 is rotated in the forward direction R. The rotation of the pulse motor 30 in the forward direction R causes the platen roller 13 to rotate in the forward direction R, and the ADF roller 19 also rotates in the forward direction R by the one-way clutch 34 via the second drive transmission mechanism 32. ..

When the ADF roller 19 rotates in the forward direction R, the supplied document 11 is sucked in the A direction. When the original document 11 is sucked, only one original document 11 in contact with the ADF roller 19 is separated and sucked by the separator 20 among the plurality of original documents 11 inserted in an overlapping manner. The document 11 sucked by the ADF roller 19 advances to the platen roller 13 and the reading sensor 14, and is fed in the A direction by the platen roller 13 rotating in the forward direction R by the pulse motor 30 and is also transferred to the platen roller 13. The information on the document 11 is read at the position sandwiched by the reading sensor 14. The document 11 is repeatedly fed and read, and the document 11 is discharged to the discharge outlet 16 in the A direction.

(2) Receiving Operation When information is printed on the recording paper 12 by the print head 15 to receive the information, the recording paper 12 sandwiched between the print head 15 and the platen roller 13 is the same as the pulse motor 30. By the rotation in the direction R, the platen roller 13 rotating in the forward direction R feeds it in the B direction. Then, the recording paper 12 is sandwiched between the print head 15 and the platen roller 13, and information is written by the print head 15.

When the recording paper 12 sent in the B direction by the rotation of the platen roller 13 reaches the ADF roller 19 through the cutter 18, the rotation of the pulse motor 30 in the forward direction R causes the second drive transmission mechanism. By the rotation of the ADF roller 19 in the forward direction R transmitted via 32 and the one-way clutch 34, the ADF roller 19 is sent in the B direction. Even after the writing on the recording paper 12 by the print head 15 is completed, the pulse motor 30 continues to rotate in the forward direction R until the end of the recording portion of the recording paper 12 reaches the cut portion of the cutter 18. When the edge of the recording paper 12 reaches the cutting portion of the cutter 18, the recording paper 12 is cut by the cutter 18.

Thereafter, as the pulse motor 30 rotates in the reverse direction L, the platen roller 13 also rotates in the reverse direction L, and the ADF roller 19 moves in the forward direction R via the first drive transmission mechanism 31 and the one-way clutch 33. Rotate to. By rotating the platen roller 13 in the reverse direction L, the unused recording paper 12 is pulled back to a predetermined position C in preparation for the next reception, and by the rotation of the ADF roller 19 in the normal direction R, the separated recording paper 12 is separated. 12 advances in the B direction and is discharged from the discharge port 17. If the second sheet is not received, the platen roller 13 is rotated in the forward direction R by the rotation of the pulse motor 30 in the forward direction R, the leading edge of the recording paper 12 is sent to the standby position D, and the standby state is set. ..

(3) Copy Operation When the information on the original 11 is read by the reading sensor 14 and the read information is printed (copied) on the recording paper 12 by the print head 15, the print head 15 has its fulcrum shaft 15a. It is supported by and is in contact with the platen roller 13 by its own weight. The original 11 is inserted between the ADF roller 19 and the separator 20, and the pulse motor 30 is rotated in the reverse direction L. When the platen roller 13 rotates in the reverse direction by the rotation of the pulse motor 30 in the reverse direction L, the recording paper 12 having the leading edge at the standby position D is pulled back to the writing position sandwiched between the platen roller 13 and the print head 15.

At the same time, the ADF roller 19 is rotated in the forward direction R by the one-way clutch 33 via the first drive transmission mechanism 31. Due to the rotation of the ADF roller 19 in the forward direction R, the document 11 is attracted in the A direction. When the original 11 is sucked, only one original 11 that is in contact with the ADF roller 19 is separated and sucked by the separator 20 among the plurality of originals 11 that are inserted in an overlapping manner. The document 11 sucked by the ADF roller 19 is sandwiched by the platen roller 13 and the reading sensor 14 and advances to the reading position. By this operation, the original 11 reaches the reading position, and at the same time, the recording paper 12 reaches the writing positions of the print head 15 and the platen roller 13.

Next, when the pulse motor 30 is rotated in the forward direction R, the platen roller 13 also rotates in the forward direction R, the document 11 is fed in the A direction, and is sandwiched between the platen roller 13 and the reading sensor 14. The information on the document 11 is read by the reading sensor 14 at the open position. At the same time, the recording paper 12 is fed in the direction B by the rotation of the platen roller 13, and information is written by the print head 15 at the position sandwiched by the platen roller 13 and the print head 15. By this operation, the feeding and reading of the original 11 is repeated, and further the feeding and writing of the recording paper 12 are repeated.

The pulse motor 30 continues to rotate in the forward direction R even after the writing on the recording paper 12 is completed by the print head 15, and feeds until the end of the recording paper 12 reaches the cut portion of the cutter 18. When the edge of the recording paper 12 reaches the cut portion of the cutter 18, the recording paper 12 is cut by the cutter 18. Then, as the pulse motor 30 rotates in the reverse direction L, the platen roller 13 rotates in the reverse direction, and the ADF roller 19 rotates in the forward direction R via the first drive transmission mechanism 31 and the one-way clutch 33. To do. When the platen roller 13 rotates in the reverse direction L, the leading edge of the cut recording paper 12 is pulled back to a predetermined position C to prepare for the second copy, and the rotation of the ADF roller 19 in the normal direction R causes At the same time when the original 11 is drawn in, the cut recording paper 12 advances in the direction B and is discharged from the discharge port 17.

When the second copy is not performed, the platen roller 13 is rotated in the forward direction R by the rotation of the pulse motor 30 in the forward direction R, and the leading edge of the recording paper 12 is sent to the standby position D. Will be in a standby state. With such a series of operations, it is possible to simultaneously write the information of the original 11 on the recording paper 12 while reading the information of the original 11.

As described above, in the present embodiment, the single ADF roller 19 can be used to separate and suck the original 11 and to discharge the cut recording paper 12, which improves usability. Moreover, since the separation and suction of the original 11 and the discharge of the cut recording paper 12 can be performed by using one ADF roller 19, the number of parts of the apparatus is reduced, the structure is simplified, and The size can be reduced and the cost can be reduced.

The present invention is not limited to the above embodiment, and various modifications can be made. For example, in FIG. 1, the plural documents 11 are separated by the separator 20, but the plural documents 11 may be separated by using other means such as rollers. Further, in FIG. 2, the pulse motor 30 is constituted by another motor, or the drive transmission mechanisms 31, 32 and the one-way clutches 33, 34 for transmitting the rotational force of the pulse motor 30 are replaced by pulleys or the like. It can be configured with other drive transmission mechanism. Further, the above-described embodiment can be applied to other devices such as a printer device other than the facsimile device.

[0027]

[Effect of the device]

 As described above in detail, according to the present invention, it is possible to separate and suck the original document and discharge the cut recording paper by using one ADF roller, which improves usability. Moreover, since automatic paper feeding and discharging of recording paper after cutting can be performed using one ADF roller, the number of parts is reduced, the structure is simplified, and the device can be downsized and the cost can be reduced. It will be possible.

[Brief description of drawings]

FIG. 1 is a block diagram of a read / write device showing an embodiment of the present invention.

FIG. 2 is a configuration diagram of a drive mechanism in FIG.

FIG. 3 is a block diagram of a conventional read / write device.

[Explanation of symbols]

 11 Original Document 12 Recording Paper 13 Platen Roller 14 Reading Sensor 15 Print Head 18 Cutter 19 ADF Roller 20 Separator 21 Pinch Roller

Claims (1)

[Scope of utility model registration request] 1. A platen roller that conveys a document and a recording sheet, a reading sensor that grips the document together with the platen roller, and a reading sensor that reads information in the document, and a recording sheet that grips the recording sheet together with the platen roller. A print head for writing information on the recording paper under pressure against the platen roller;
A reading / writing apparatus comprising a cutter for cutting a recording paper on which information has been written by the print head, the reading / writing device being arranged at an inlet side of the reading sensor and an outlet side of the cutter, and sucking the original document to make it Separated to read sensor
A reading / writing apparatus comprising an automatic document supply roller for supplying and discharging the cut recording paper.