JPS5888966A - Reading and recording device - Google Patents

Abstract

PURPOSE:To read even an original of book through the setting on a flat plane, by carrying an original reading section also toward the lengthwise direction of the original for reading it. CONSTITUTION:A reading head 17 and a recording head 21 repeat reciprocating movement in the X direction through a motor 1 which repeats forward and reverse rotation. Further, a stepping motor 28 is driven when the heads 17 and 21 come to the end of the X direction to slide a carriage 6 on a guide rod 5 by a prescribed distance toward the Y direction and to rotate a feed roller 32 and rollers 37, 38 for the feeding of recording paper 23 by a prescribed amount. In the movement of the carriage 6 toward the Y direction, since a carriage 12 linked with the guide rod 5 is slided by a prescribed amount on a guide rod 11 toward the Y direction, the reading head 17 can be moved toward the Y direction by a prescribed amount corresponding to the reading width.

Description

[Detailed Description of the Invention] In a conventional general reading/recording device, a document wrapped around the surface of a rotating drum was read by a document reading section to generate an image signal. It was limited to items that could be wrapped around each other, and it was not possible to use non-foldable items such as books, ledgers, and cards as manuscripts.

The above-mentioned problems can be solved satisfactorily by a reading/recording device that performs flat scanning, but conventional reading/recording devices that perform flat scanning require a sensor with a length that corresponds to the width of the document, or a sensor with a length that corresponds to the width of the recording paper. A device that uses a recording head that corresponds to the width is expensive because the yield of the sensor and recording head is low, and a reading device that performs reading with a single photoelectric conversion element and recording with a single recording element Recording devices have the drawback of slow reading speeds and slow recording speeds.

For example, the applicant company has
A planar scanning type reading and recording device as disclosed in Publication No. 2 has been proposed. In this previously proposed flat scanning type reading and recording device, it is necessary to hold both the original and the recording paper on a flat surface, and the distance and pressure between the recording head and the recording paper must be constant. When an inkjet type or heat-sensitive type is used, it is necessary to maintain good flatness over the entire surface of the recording paper, resulting in a large-scale device that poses a practical problem. Sometimes. Additionally, the fact that the recording paper is placed on a flat surface and you cannot see the recorded image during the recording operation is inconvenient depending on the usage mode. Restrictions on aspects may also be a problem.

The present invention has been made with the object of providing a reading/recording device that satisfactorily solves the problems of the conventional reading/recording devices and previously proposed reading/recording devices. , the specific contents of the reading/recording apparatus of the present invention will be explained in detail.

FIG. 1 is a perspective view of an embodiment of the reading/recording device of the present invention. In FIG.
A belt 3 is stretched between the pulley 4 and the pulley 4 fixed to the belt 3.

The guide rod 5 described above rotates clockwise or counterclockwise in accordance with the forward and reverse rotation of the motor 1. A pulley 8 is fixed to the guide rod 5, and a carriage 6 is slidably inserted therein. Further, the guide rod 5 described above has a structure that can rotate integrally with the guide rod 5 and
A pulley 7 is engaged with the pulley 7 in such a manner that it is slidable in the longitudinal direction of the pulley 7. The mode of engagement between the guide rod 5 and the pulley 7 as described above is such that, for example, a key groove is provided in the axial direction on the circumferential surface of the guide rod 5, and the pulley 7 inserted through the guide rod 5 is provided with the above-mentioned key. The well-known engagement mode of providing a key that engages with the groove may be employed.

Therefore, when the carriage 6 moves in the axial direction of the guide rod 5, the pulley 7 can move integrally with the carriage 6 in the axial direction of the guide rod 5, and can also rotate integrally with the guide rod 5. I can do it.

Furthermore, a carriage 6 is provided between the carriage 6 and the guide rod 5.
A bearing 9 is provided so that the guide rod 5 can slide smoothly in the axial direction of the guide rod 5.

Reference numeral 11 denotes a guide rod provided parallel to the guide rod 5 described above, and a pulley 14 is fixed to this guide rod 11Vc, and a carriage 12 is provided to be slidable in the axial direction of the guide rod 11. Also, the guide rod 11 has a
The pulley 13 is provided in an engagement manner such that it can rotate integrally with the guide rod 11 and is slidable in the longitudinal direction of the guide rod 11. 15 is a bearing. Guide rod 5
．． 11 and bearings at both ends of a guide rod 20, which will be described later, are not shown.

The carriage 6 and the carriage 12 described above are connected to a guide rod 16.
The reading head 1 is connected to the guide rod 16 by
7 is inserted. The reading head 17 is fixed to the above-mentioned pulley 7 and the fist wire 18 wound around the pulley 13, and as the pulley 7 rotates in the forward and reverse directions,
It moves from left to right or from right to left in FIG. The arrow in FIG. 1 indicates the direction of movement of the XFi reading head 17. An example of the configuration of the reading head 17 is shown in FIG. 2, in which 17m is a housing, 17b is an image sensor, 17c is a reflecting mirror, 17d is an imaging lens system, 1
7e is a reflector, and 17f is an illumination lamp.

Illumination lamps 17f, 17f in the reading head 17
The light is reflected by the reflecting plate 17e, passes through the reading aperture 17g and the contact glass 19, and illuminates the original O placed on the contact glass 19.

The image information of document 0 is imaged at reading aperture 17g: y
An image is formed on the photoelectric conversion surface of the image sensor 17b) via the X system 17d, the reflecting mirror 17b, etc.
An image signal is sent from there.

The manner of engagement between the reading rod 17 and the guide rod 16 is as follows.
The reading head 17 can freely slide in the axial direction of the guide rod 16, and the reading opening 17g of the reading head 17 always faces the surface of the contact glass 19 in a predetermined position. The format will be adopted.

A wire 22 is stretched between the pulley 8 fixed to the guide rod 5 and the pulley 14 fixed to the guide rod 11, and both ends of the wire 22 are inserted through the guide rod 2o.
The guide rod 2o is fixedly attached to the rod 21, which is slidable in the axial direction. 1 of the engagement between the guide rod 20 and the recording head 21
The manner of engagement between the guide rod 16 and the reading head 17 is the same as that described above, and the recording head 21Fi is slidable in the axial direction of the guide rod 16, and the recording element of the recording head 21 is A configuration is adopted in which the recording paper 23 can always be brought into contact with the recording paper 23 in the correct position.

When the motor 1' rotates, the guide rod 5 rotates, so that the pulleys 7 and 8 rotate integrally with the guide rod 5, and are fixed to the wire 18 stretched between the pulley 7 and the pulley 13. The reading head 17 and the recording head 21 fixed to a wire 22 stretched between the pulley 8 and the pulley 14 are moved by guide rods 16 and 20, respectively, in accordance with the forward and reverse rotation of the motor l. The reading head 17 and the recording head 21 are guided by the guide rods 16 and 20 to reciprocate in the axial direction (X direction), but the reading head 17 and the recording head 21 move in opposite directions.

That is, when the reading head 17 is moving from the carriage 12 side to the carriage 6 side, the recording head 211d is not moving from the pulley 8 side to the pulley 14' side. 7 is moving from the carriage 6 side toward the carriage 12 side, the recording head 21 is moving from the pulley 14 side toward the pulley 8 side.

An encoder 24 is attached to the guide rod 5, and a timing pulse is sent from the encoder 24 in correspondence with the rotation angle of the guide rod 5. Bar 16.2
The timing pulse that is generated every time the image sensor 17b of the reading head 17 moves by a predetermined distance in the X direction after being guided by It is used as a timing pulse for starting writing in No. 23.

The reciprocating range of the reading head 17 and the reciprocating range of the recording head 21 are the reading range of the image information of the original 0 by the reading head 17 (the length of the image information in the width direction of the original)
and the width of the recording area of the recording paper 23 by the recording head 21), and the reading operation of the image information from the document O by the reading head 17 and the width of the recording area of the recording paper 23 by the recording head 21.
The recording operation on the recording paper 23 is performed in a part of the reciprocating range of the reading head 17 and the recording head 21 described above. Reference numerals 26 and 27 denote signal generators such as photointerrupters, and these signal generators 26 and 27 control the end of the reading operation range in the X direction by the read spatula door 7 and the recording operation range in the X direction by the recording head 21. and generate a corresponding signal. A photointerrupter 27Fi is fixed to the carriage 6, and the photointerrupter 26 is fixed to the carriage 12 and moves in the Y direction together with the carriage 6.12. 25 operates to cause the photointerrupter to send out a signal when positioned in the optical path between the light emitting element and the light receiving element taken by the reading head 17. When the length of the reading operation range in the X direction by the reading head 17 is equal to the length of the recording operation range in the X direction by the recording head 21, the light shielding plate 25 and photointerrupters 26 and 27 described above It goes without saying that the recording operation range of the recording head 21 can be determined by the signal generated by the recording head 21, but it is also possible to provide a photointerrupter along the movement path of the recording head 21 to obtain the required signal. It may be set to 5.

As mentioned above, the reading head 17 and the recording head 21 repeatedly perform reciprocating motion in the X direction as the motor 1 repeatedly rotates forward and backward, but the reading head 17 has only one end in the X direction. When the part has moved to the other part, and when it has finished moving from the other end to one end in the X direction, it moves in a specific direction in the direction Y perpendicular to the X direction. The recording head 21 is moved by a predetermined distance, and when the recording head 21 finishes moving from one end to the other end in the X direction,
Then, when the recording paper 23 has finished moving from the other end to the one end in the X direction, the recording paper 23 is moved a predetermined distance in a specific direction in the direction Y perpendicular to the X direction. It is done like this.

The moving distance (movement l) of the reading head 17 in the Y direction described above
) and the moving distance (moving amount) of the recording paper 23 are made equal, but the direction of the above-mentioned movement is made opposite.

The mechanism for moving the reading pad 17 and the recording paper 23 in the Y direction is a stepping motor 28 in the embodiment shown in FIG.
, pulley 29, wire 30, carriage 6, guide rod 5,
It is composed of parts such as a pulley 31, feed rollers 32 and 33, a belt 34, a pulley 35, a rotating shaft 36, and rollers 37 and 38.

That is, the stepping motor 28c, the reading head 17
When the recording head 21 reaches the end in the X direction, it rotates and moves the carriage 6 a predetermined distance Y on the guide rod 5.
Slide it in the direction 1. In addition, the feed roller 32 and rollers 37.
38 to feed out the recording paper 23 a predetermined distance. The above-mentioned movement of the carriage 6 in the Y direction corresponds to the movement of the reading head 17Fi from the hand which also slides the carriage 12 connected by the guide rod 16 by a predetermined amount in the Y direction on the guide rod 11 while reading the carriage 12 connected thereto by the guide rod 16. The robot moves in a specific direction in the Y direction (thick arrow YI in the figure) by a predetermined distance. A thick arrow Y2 in the figure indicates the direction of movement of the recording paper 23.

The predetermined movement amount of the reading head 17 and the recording paper 23 described above,
That is, when the reading head 17 is reading W, the reading head 17
It is determined by the number of elements and element density in the image sensor 17b (line image sensor) used in the image sensor 17b (line image sensor), and the magnification of the imaging optical system. For example, if the line image sensor 17b used in the reading head 17 has 64 elements and an element density of 8/m, and the magnification of the imaging optical system is 1, then during reading by the reading head 17 W( Since W (the length in the Y direction) in FIG. 3 is 8■, the Y
The amount of movement in the direction is Fi(8+Δ)fi. The above Δ
is the distance between adjacent elements in the line image sensor 17b. Note that the time W during reading in the reading head 17 described above is equal to the time during recording in the recording head 21 .

FIG. 3 is a diagram illustrating and explaining the outline of the reading scan performed by the reading head 17 on the original 0 (the same applies to the recording scan performed by the recording head 21),
In FIG. 3, it is the home position of the HPilt reading head 17, I represents the first forward scan by the reading head 17, II#'i the first backward scan, and ■ represents the area fidgeting caused by the second forward scan. and each area I, [
For [, IIl, the direction of scanning is shown. Further, 26 and 27 in FIG. 3 indicate the positions where signals are generated by the stand interrupters 26 and 27 shown in FIG. 1.

In FIG. 3, the image information of document 0 is read by the reading head 17 at 64 bits in the Y direction, and at 1728 bits in the section between photointerrupter 26 and photointerrupter 27 in the X direction. This is an example of what can be done. Image 11 by the line image sensor 17b in the reading head 17! Reading of information and image recording by the recording elements in the recording head 21 are performed by timing pulses generated by the encoder 24 fixed to the guide rod 5 as described above. Even if the moving speed in the X direction is uneven, this will not cause image distortion in the recorded image.

The recording paper 23 is connected to the recording head 21 and the backing plate or the feed μm.
By allowing the recording head 21 to form a recorded image on the recording paper 23 that is held between the paper sheets and sent out to the recording head 21, the recorded image can be viewed directly during recording. Since tension is applied to the recording paper 23 by the rollers 37 and 38 which rotate at a peripheral speed faster than the peripheral speed of the feed roller 32, the recorded image can be viewed directly. It goes without saying that the jq 37138 clamps the recording paper 23 by means of a roller or a contact plate that cooperates with the jq 37138. The coq 37+38 is fixed to a shaft 36 fixed to a pulley 35, and when the pulley 35 is rotationally driven by a belt 34 stretched between the pulley 31 and the pulley 35, the coq 37+38 is rotated. In the figure, axis 36. Bearings such as feed rollers 32 and 33,
Illustrations are omitted for simplicity of illustration.

As is clear from the detailed explanation above, the reading/recording device of the present invention performs the reading operation with the document set on a flat surface, so it is possible to read even if the document is a book. Furthermore, by performing reading scans and recording scans during appropriate reading and recording by the reading head 17 and recording head 21, reading the original and forming a recorded image can be performed in a short time. Since the movement with the head in the X direction is performed at the same time, uneven feeding is canceled out and image distortion does not occur.Furthermore, the recording head 21 only performs reciprocating movement in the X direction and moves in the Y direction. Because the recording paper is configured to move, it has various advantages such as making it possible to maintain a constant distance between the recording head and the recording paper or to maintain constant pressure with a simple configuration. According to the inventive device, it is possible to easily provide a reading/recording device in which all of the conventional problems mentioned above are solved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the apparatus of the present invention, FIG. 2 is a side sectional view of an example configuration of a reading head, and FIG. 3 is a plan view showing the mode of reading scanning. 1...Motor, s, 11,16.20...
Guide rod, 6.12. ... Carriage, 2, 4, 7.8,
13.14131...Pulley, 17...Reading head, 21...Recording head, 23...Recording paper, 26.2
7... Photo interrupter, 28... Stepping motor, 18, 22. 30... Wire, 32...
・Feed roller,

Claims (1)

[Claims] A reading and recording device that is equipped with an original reading section that scans an original and photoelectrically converts it, and a recording section that records image signals on recording paper. means for performing a document reading operation by moving the document reading unit in the length direction of the document as well as in the width direction of the document;
means for reciprocating the recording section in the opposite direction to the movement of the document reading section; and means for moving the recording paper on which image signals are recorded by the recording section by the same amount as the amount of movement of the document reading section in the length direction of the document. A reading and recording device equipped with means for moving by the amount of movement.