JPS61251270A - Input and output device - Google Patents

Abstract

PURPOSE:To print a read picture information substantially at a correct position on a printing paper by disposing at least one set of shuttle type reading head and a shuttle type printing head in the vicinity intersecting at right angles with a width of the paper. CONSTITUTION:A printing head 15 extends through the width of a paper. At the side opposing to the paper of the reading head 15, a light emitting side fiber Ti and a photodetecting side Ri are exposed and opposed to a paper holding section. A thermal head 18 constitutes a printing section and has a printing dot Ki printed on the paper disposed through the width of the paper at a pitch (p) equal to a pitch P of a reading section Si. Said reading section Si and the printing dot Ki are disposed on a straight line intersecting at right angles with the direction of the width of the paper. Thereby, the read picture information can be disposed at a correct position on the printing paper.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention includes a reading head that reads image information written on paper, and a print head that prints the image information read by the reading head etc. on the paper. This relates to input/output devices.

[Prior Art and Problems to be Solved by the Invention] Various input/output devices have been proposed in the past for this type of input/output device. A line type input/output device in which the printers are arranged across the paper width, and a serial type input/output device in which the reading head and print head are integrally moved in the paper width direction are shown.

In a normal line-type input/output device, the reading section that reads the image information written on the paper and the printing section that prints the read image information are arranged across the width of the paper according to the pitch of the reading resolution and printing resolution. has been done. A line-type input/output device having a corresponding number of reading sections and printing sections is very expensive.

Furthermore, in a typical serial type input/output device, the reading head and the print head perform reading and printing operations, respectively, while moving integrally in the paper width direction, but the reading speed and printing speed thereof are extremely slow.

[Object of the Invention] The present invention was made in order to solve the above-mentioned problems of the prior art, and its purpose is to provide a new input/output device that can perform high-speed printing and high-speed reading at low cost. A further object of the present invention is to provide an excellent input/output device that can output image information read by a reading head to a substantially accurate position on printing paper without any effort.

[Means for solving the problem] In order to achieve this object, in the present invention, the reading unit that reads the image information written on the paper is a reader set in advance to read the image information. In order to print the image information, there is a shuttle-type reading head arranged across the width of the paper with a pitch larger than the resolution pitch, and a printing section that prints the image information read by the shuttle-type reading head, etc. A shuttle-type print head arranged across the width of the paper at a pitch larger than a preset printing density pitch, the shuttle-type reading head, and the shuttle-type print head are integrally transported in the width direction of the paper. a transporting means; and a detection means for detecting a position at which the reading section and printing section should read and print at the reading resolution and print density when the shuttle-type reading head and the shuttle-type print head are transferred. The at least one set of reading section and printing section is arranged near a straight line perpendicular to the sheet width direction.

[Operation] In the input/output device having the above-described configuration, when the shuttle-type reading head and the shuttle-type print head are integrally transported in the paper width direction, the reading section and the printing section are set at the reading resolution and the printing resolution. When the paper is at the position to be read and the position to be printed, a reading operation and a printing operation are performed, and at least one set of the reading section and the printing section is arranged near a straight line perpendicular to the paper width direction. Therefore, by placing the paper on which the image information is written and the paper on which the image information is printed at the correct positions in this input/output device, the read image information can be read almost exactly on the printing paper. Can be printed in position.

[Example] Hereinafter, an example embodying the present invention is shown in FIGS. 11 to 5.
This will be explained with reference to the figures.

In FIG. 2, this input/output device is equipped with left and right frames 1a and 1b. Frame 1a on the left and right
, 1b, a round platen 2 is rotatably installed.

As shown in FIG. 3, below the round platen 2, there is disposed a paper feed roller 3 which presses a sheet of paper against the round platen 2 and feeds the sheet, which will be described later. A roll paper 4 on which image information is printed is arranged behind the round platen 2, and the leading end of the roll paper 4 (hereinafter referred to as printing paper 4a) extends toward the round platen 2. Between the round platen 2 and the roll paper 4, there are a pair of upper and lower paper guide plates 5a that guide the printing paper 4a and paper 8, which will be described later.

5b is placed closer to the front than the rear. Between the paper guide plate 5a on the rear side and the roll paper 4, the printing paper 4a
A pair of paper feed rollers 6 are arranged to feed the paper. A paper guide plate 6a is arranged between the paper feed roller 6 and the roll paper 4 to guide the printing paper 4a.

Further, the rear portion of the paper inner board 5a extends to the point where the paper 4a is sent out by the paper feed rollers 6 in order to guide the printing paper 4a sent by the pair of paper feed rollers 6. Then, the printing paper 4a is transported by the paper feed roller 6, and the paper guide plates 5a, 5b, 6a
The paper is guided by the paper feed roller 3 and the round platen 2.

Another paper guide plate 7 is arranged above the reroller 6, and a paper 8 on which image information is written is placed on the paper guide plate 7. The paper 8 that is placed is on its paper guide plate 7.
b, the round platen 2 and its paper feed roller 3
It is sandwiched between.

Note that a photo interrupter 9 is arranged between the two paper guide plates 5a and 5b, and the photo interrupter 9
senses the paper 8 or printing paper 4a. Further, in front of the platen 2, a paper guide plate 5C is arranged to guide the printing paper 4a and the paper 8 upward. A paper holding member 10 is arranged above the round platen 2 to hold the paper transferred upward from the round platen 2. The paper holding member 10 is made of a member (for example, a metal such as a stainless steel plate) whose surface has a certain reflectance, and as shown in Utility Model Application No. 183928/1983, the paper holding member 10 is Reference numeral 10 functions to adjust the amount of light from a light emitting element, which will be described later.

A pair of paper feed rows 511 are arranged above the paper holding member 10 to press the paper and transport the paper upward.

As shown in FIG. 2, the paper feed roller 11 and the paper holding member 1
0 is a guide line 10a for setting the paper 8 and printing paper 4a.

11a is written, and the user should follow the guide line 10a.
, 11a, the paper 8 and the printing paper 4a can be arranged at substantially the same position. A photo interrupter 12 is provided between the pair of paper feed rollers 11 and the paper holding member 10.
is arranged, and its photointerrupter 12 senses the paper 8 or print paper 4a. The photointerrupter 9.12 is connected to a central processing unit 30 (hereinafter referred to as
(referred to as CPU) (see Fig. 4).

As shown in FIG. 4, the paper feed rollers 3, 6.11 are provided with drive mechanisms 3a, 6 for driving each roller.
a, 11a are connected, and their respective drive mechanisms 3a, 6
a and 11a are connected to the CPU 30. When the paper is pressed by the rollers 3, 6° 11, the CPU 30 controls the drive mechanisms 3a, 6a, 11a to rotate the rollers 3, 6, 11. It is transported according to the direction of rotation of the roller.

A reading head 15 for reading image information on the paper 8 is attached to the paper holding member 1 on the left and right frames 1a and 1b.
It is constructed so as to be close to and opposite to 0. The reading head 15 extends across the paper width, and on the side of the reading head 15 facing the paper, there is a light-emitting fiber Ti, which will be described later.
The light-receiving side fiber R1 is exposed and faces the paper holding member 10.

The paper-side end of the light-emitting fiber Ti and the paper-side end of the light-receiving fiber R1 are as shown in FIG.
It is arranged adjacent to the paper holding member 10 in the longitudinal direction. The reading sections Si constituted by the one sheet-side end of the one light-receiving fiber R1 are arranged in the longitudinal direction at a constant pitch P. A certain clearance is required between the reading section 3i and the paper holding member 1'0, and as shown in FIG. 3, a spacer is provided on the side of the reading spatula 115 facing the paper. 15b is fixed. A space is provided between the spacer 15b and the paper holding member 10 into which a paper can be inserted.

A thermal head 16 is screwed onto the reading head 15 at a position facing the round platen 2 with a heat sink 17 interposed therebetween. In the thermal head 16, the printing dots forming the printing section and printing on the paper;
(i is a natural number from 1 to 5n) (see FIG. 1). The reading section 3i and the printing dots Ki are arranged on a straight line orthogonal to the paper width direction. In this embodiment, since the pitch between the reading sections 3i and the pitch between the printing dots K1 is equal, the printing section K from the rightmost edge to the leftmost edge in the width direction of the paper is equal.
i-5n and reading sections Si to S5n are respectively the above-mentioned -
placed in a straight line. As a result, the timing pulses output from the encoder 26, which will be described later, and their movement start and end points become common. In this case, the pitch P is larger than the pitch of the reading resolution set in advance for reading the image information, and also larger than the pitch of the printing density set in advance for printing the image information. That is, the pitch P is P=a/N-1/XN a : Number of reading parts that face each other when one reading part moves in the axial direction 1/N : Diameter of the reading part (N: reading resolution) : It is set by the formula for the number of light-receiving fibers connected to one light-receiving element.For details about this formula, see
Please refer to Japanese Patent Application No. 59-254792.

The reading head 15 is movable in the longitudinal direction of the paper holding member 10, and at the bottom of the reading head 15, as shown in FIG. Cam follower 1 that forms part of
A support plate 19 on which the support plate 9b is installed is fixed. The support plate 19 is provided with a protrusion 19a, and a spring 20 is stretched between the protrusion 19a and the right frame 1a. 1a is energized.

A shaft 22 that extends from the rear to the front and is parallel to the right frame 1a is rotatably attached to the right frame 1a.

The shaft 22 passes through the eccentric cam 21 that engages with the cam follower 19b, and the shaft 22 and the cam follower 19b rotate integrally. A first gear 25 is attached to the shaft 22 at a position behind the eccentric cam 21 and rotates integrally with the shaft. The first gear 25 meshes with a second gear 24, which will be described later, and the second gear 24 is attached to the motor shaft of a motor 23 that transports the reading head 15 in its longitudinal direction.

Further, a disc 26a of the encoder 26 is attached to the shaft 22 in front of the eccentric cam 21, and the disc 26a rotates integrally with the shaft 22.

The encoder 26 is a disk 26a in which a perforation is formed.
, and a light emitting element and a light receiving element (both not shown) which are arranged opposite to each other with the disk 26a in between.

The disk 26a includes a portion 261 provided with a large number of fine perforations for generating short-cycle timing pulses used during reading and printing operations, and a portion 261 that determines when the reading head 15 starts moving. It consists of a portion 262 in which no wide perforation for detection is provided, and a portion 263 in which a wide perforation is provided for detecting the end of movement of the reading head 15.

The encoder 26 detects the amount of rotation of the shaft 22,
C in the microcomputer 29 shown in FIG.
The timing pulse is output to PU30.

When the motor 23 is drive-controlled by the CPU 30 via the motor control circuit 27, the second gear 24 connected to the motor shaft rotates integrally with the motor shaft. The first gear 25 meshed with the gear 24 also rotates.

The eccentric cam 21, which rotates integrally with the first gear 25, reciprocates the cam follower 19b in the longitudinal direction of the reading head 15 while engaging with the cam follower 19b. As a result, the reading head 15 moves from the right frame 1a to the left frame 1b against the urging force of the spring 20.
The reading head 15 then moves from the left frame 1b to the right frame 1a as the eccentric cam 21 engages the cam follower 19b by the force of the spring 20. , and stop in place. The encoder 26 detects the amount of rotation of the shaft 22, thereby detecting the position of the reading head 15 to be read. Note that below the thermal head 16 and the reading head 15, flexible cables 16a, 1
5a extends downward, and its flexible cable 1
6a and 15a are CPs in the microcomputer 29;
Connected to U40.

Next, the configuration of the reading head 15 will be explained.

The reading head 15 includes a light emitting element 1 as shown in FIG.
11-115. L21-L25. ...1ni~1-n
5 (hereinafter collectively referred to as 1-i) and the light from the light emitting element 1i is read at the reading points D11 to D15°...[)n1 to
[)n5 (hereinafter collectively referred to as Di), the light emitting side fibers T11 to T15. ...Tnl~Tn5 (hereinafter referred to as Ti
), the light-receiving side fibers R11 to R15, ... Rn1 to Rn5 (hereinafter referred to as R
1) and amplifiers A1 to An (hereinafter collectively referred to as Ai) that amplify the outputs from the light receiving elements P1 to Pn.

The light emitted from the light emitting element 1-i illuminates the reading point Di via the light emitting fiber Ti, and the reading point D
The reflected light from i is received by the light receiving element Pi via the light receiving fiber R1. Then, the light receiving element Pi generates an electric signal according to the amount of light received, and the electric signal is input to the amplifier Ai and amplified. In this embodiment, five light-receiving side fibers Rnl to Rn5 are connected to one light-receiving element pn. The output signal from the amplifier Ai is input to comparators 01 to Cn (hereinafter collectively referred to as Ci) provided in the microcomputer 29 and serving as discrimination means via the flexible cable 15a. A reference value signal for determining whether the paper 8 is white or black is input to another input terminal of the comparator Ci. The comparator Ci
The output terminal of is the CPU 30 in the microcomputer 29.
When the output signal from the amplifier Ai is greater than the reference value signal, the comparator Ci outputs a high level signal; when the output signal is smaller than the reference value signal, the comparator C1 outputs a high level signal. outputs a low level signal.

The CPU 30 includes a read/write memory (hereinafter referred to as RAM) 31 that stores a signal inputted from the comparator Qi (hereinafter referred to as image information data) and a signal inputted from the photointerrupter 9.12, and the drive mechanism. 3a,
5a, 11a, and a read-only memory (hereinafter referred to as ROM) 32 that stores programs and the like for controlling the motor control circuit 27, the D/A converter 33 and the demultiplexer 34 which are quickly operated. There is.

The CPLJ 30 is connected to a digital-to-analog conversion means (hereinafter referred to as a D/A converter) 33 within the microcomputer 29. The D/A converter 33 controls the amount of light emitted from each light emitting element 1-i, and the ROM
The light emission amount data stored in the microcomputer 32 is converted into an analog signal and outputted to the control circuit Gi via a demultiplexer 34 provided in the microcomputer 29.

The demultiplexer 34 is controlled by a CPLI 30,
The output signal from the D/A converter 33 is transmitted to the light emitting element L provided in the microcomputer 29.
i control circuit G11~G15°...Qn1~Gn5
(hereinafter collectively referred to as Qi) are selected and output in order. The control circuit (3i) controls the light emitting element Li so that the light emitting element Lj emits a predetermined amount of light based on the output signal of the D/A converter 33. Regarding, Jitsugan Sho 59-18392
Please refer to No. 8. .

Next, the reading operation and printing operation of the input/output device configured as described above will be explained with reference to FIG.

In FIG. 5, Di represents the position to be read and the position to be printed in terms of reading resolution and printing density, and during a reading operation, it is called a reading point D1, and during a printing operation, it is called a printing point Di. In this case, the reading section Si is indicated by a circle that approximates each reading point Di.

First, the user places the paper 8 on which image information is written on the paper guide plate 7. Then, the paper 8 is guided by the paper guide plates 5a, 5b, and 5c, transported by the platen 2 and paper feed rows 53, 11, and 12, and held by the paper holding member 10. At that time, the user must
0a and 11a, the paper 8 is placed in the correct position.

Then, the CPLJ 30 outputs a predetermined drive signal to the drive motor 23 via the motor drive circuit 27, and when the drive motor 23 is rotationally driven in one direction, the second gear 24.
The eccentric cam 21 is rotationally driven via the first gear 25,
The reading head 15 is reciprocated through engagement between the eccentric cam 21 and the cam follower 19b. Then, when a timing pulse is input from the encoder 26 to the CPLJ 30, each reading section S1 approaches each reading point Di (the position shown in FIG. 5(a)). In other words, n reading units Si are arranged at n reading points Di (in this case, i=i=
19m+1. satisfies the relationship m=o, 1.2...)
(only two are shown) at the same time. At this time, the CPU
30 outputs predetermined light emission amount data to the D/A converter 33, and controls the demultiplexer 34 to read each reading section Si (in this case, i is 5m+1.m=o, 1.
2) that satisfy the following relationship: emit light at the same time.

Therefore, the light emitted from each light emitting element 1-i passes through the corresponding light emitting fiber Ti and is irradiated from the reading section 3i to each reading point DI on the paper 8, and the light reflected at each reading point Di is Each light-receiving fiber Ri (in this case, 1-5m+1.
(which satisfies the relationship m=o, 1.2...) are simultaneously incident on the light receiving element Pi. Each light receiving element Pi outputs an electric signal corresponding to the amount of light received to each amplifier Ai.

After the signal is amplified by each of the amplifiers Ai, it is compared with the reference value signal in the next stage comparator Ci, and when the signal is larger than the reference value signal, a high level signal is sent from the comparator Ci to the CPU 30. When the signal is smaller than the reference value signal, a low level signal is output from the comparator Ci. And CPU30
stores a set of n signals in the RAM 31 as image information data.

Subsequently, the timing pulse from the encoder 26 is CP.
When input to U30, as shown in FIG. 5(b), n
reading units S1 (in this case, i=5m+2.m=o,
1.2... satisfies the relationship n) shown in the figure with diagonal lines
reading points Di (in this case i=19m+5.m=o, 1
．． 2) (only one is shown) at the same time. At this time, the CPLJ 30 connects each reading section Si (in this case, i=
5m+2. n light emitting elements 1i corresponding to the relationship m=o, 1.2, etc.) are caused to emit light simultaneously with a predetermined amount of light.

Therefore, as in the case described above, the next set of n pieces of image information data is stored in the RAM 31 according to the amount of light received by each light receiving element Pi.

As the reading head 15 continues to move, each reading section 3i approaches each reading point D1 in the order shown in the following table, and the reading operation thereof is performed.

Table 1 The above reading operation is performed while the eccentric cam 21 is rotated half a turn and the reading head 15 is moved, and at the end of the half turn, the image reading for one line on the paper 8 is completed, and the image information is The data is stored in RAM31. Next, eccentric cam 2
1 is rotated half a turn, the platen 2 and paper feed roller 3
．． 6.11, the paper 8 is fed by one line, and the reading head 15 is returned to its predetermined position. Thereafter, the above-described reading operation is repeated again, so that the reading head 15 can quickly and accurately read the next line of image information.

Thereafter, by repeating this reading operation, the paper 8
All the image information described in is stored in the RAM 31 as image information data.

Next, the printing operation of this input/output device will be explained. First, the user guides the printing paper 4a with the paper guide plate 6a,
It is held between a pair of paper feed rollers 6. The printing paper 4a transported by the paper feed roller 6 is transported by paper guide plates 5a, 5b,
5c, the platen 2 and the paper feed row 53,
11 and 12 and mounted on the platen 2.

At this time, the user first takes out the printing paper 4a up to the paper feed rollers 11 and 12, places it in the correct position using the guide lines 10a and 11a, and then moves the printing paper 4a to the paper feed rollers 3, 11, and 12. 2, and then move it back and attach it to the platen 2.

CPtJ30 connects the motor 23 via the motor drive circuit 27.
When a predetermined drive signal is output to the motor 23 and the motor 23 is rotationally driven in one direction, the eccentric cam 21 is rotationally driven in one direction via the second gear 24 and the first gear 25. 21 and the cam follower 19b, the thermal head 16 is reciprocated. And encoder 26
When more timing pulses are input to the CPU 30, each printing dot Ki approaches the printing point D1 on the printing paper 4a to be printed. In the case of this embodiment, the pitch between the reading parts and the pitch between the printed dots are the same, and the fifth
The thermal head 18 performs an operation similar to the reading operation shown in the figure.

That is, n printed dots Ki (in this case, i=5
m+1. (satisfying the relationship m-0, 1, 2...) are the n printing points D1 (in this case, if, ti = 19m + 1゜m = o, 1.2 ...
(which satisfies the relationship) are simultaneously opposed. At this time, the CPU
30 is a reading section Si (i-5m+1.m-0,1,2...
n reading points D+ (in this case, i =
19m+1. m-0, 1, 2...) image information data as n printed dots) (i (+=5m
+llm=0.1, 2...).

As a result, the nWA printing point Di (in this case i
G,ti=19m+1. m-0, 1, 2 degrees, . . . ), printing is performed based on the image information data.

Subsequently, the timing pulse from the encoder 26 is CP.
When input to tJ30, as shown in FIG. 5(b),
n printed dots Ki (in this case, i=5m+2.
n printing points Di (in this case, i=19m+5.
satisfying the relationship m=0.1.2...) (only one is shown) at the same time. At this time, the CPU 30 uses the RAM
The reading section S of the image information data stored in 31
n reading points Di (i=19m+5.m=0.1) read by i (i=5m+2.m=o, 1, 2...)
．． 2...) image information data is printed on the dot Ki(c:
In the case of i = 19m + 5. m=o.

1.2...). As a result, n printing points Di (in this case, 1 is i=1
9m'+1. m=o, 1, 2. ), printing is performed based on the image information data.

Hereinafter, the printing operation is performed as shown in Table 1 while the eccentric cam 21 is rotated half a rotation and the thermal head 8 is moved, and after the half rotation, one line of printing is performed on the printing paper 4a. When the operation is completed, one line of image information data stored in the RAM 31 is printed on the printing paper 4a. Subsequently, while the eccentric cam 21 is rotated half a rotation, the printing paper 41 is fed by one line □ by the platen 2 and the paper feeding rollers 3, 6.11. And thermal head 1
8 is returned to its predetermined position. Thereafter, the above-described printing operation is repeated again, so that the next line of image information is quickly and accurately printed on the printing paper 4a.

As described above, in the input/output device of this embodiment, the reading section 3i that reads the image information written on the paper 8,
In order to read the image information, a reading head 15 is arranged across the paper width with a pitch P larger than a preset reading resolution pitch, and the reading head 1
Thermal head 1 is arranged across the width of the paper at a pitch larger than the preset printing density pitch to print the image information read by 5 etc. 18 are integrally transported in the paper width direction, the encoder 26 detects the position where the reading section 3i and the printing dot Ki should read and print at the reading resolution and print density, and performs the reading. Head 15. The thermal head 18 performs reading operations and printing operations. At this time, if the at least one set of reading sections 3i and the printing dots Ki are not arranged near a straight line perpendicular to the paper width direction, the paper 8 on which image information is written and the image information are printed. When the printing paper 4a is placed at a regular position in this input/output device and the printing dot Ki prints the image information on the paper 8 read by the reading section 3i on the printing paper 4a, the printed The image information is printed at an offset position on the printing paper 4a with respect to the positional relationship between the paper 8 and the image information written on the paper 8.

In addition, in order to prevent this, the paper 8 and the printing paper 4 are
Although it is possible to arrange the paper sheets a and a at different positions with respect to the input/output device, it is troublesome to rearrange the paper sheets at different positions depending on the reading operation or the printing operation.

On the other hand, if the at least one pair of reading sections 3i and printing dots Ki are arranged near a straight line perpendicular to the width direction of the paper, the read image information is accurately located on the printing paper 4a. can be printed on.

Note that if the reading section S1 and the printing dot Ki, which are arranged near the straight line perpendicular to the paper width direction, are arranged at the end of the reading head and the print head in the paper width direction, the encoder Signals indicating the start and end of the reading operation and printing operation generated by the two terminals are common. Thereby, fewer perforations are required in the encoder disc 26a to generate signals indicating the start and end of reading and printing operations, and the encoder can be manufactured at low cost.

[Effects] As described above, the shuttle type input/output device of the present invention has fewer reading sections and printing sections than a line type input/output device, can be formed at a lower cost, and is more cost effective than a serial type input/output device. , the reading speed and printing speed become faster. Furthermore, when the paper on which the image information is written and the paper on which the image information is printed are placed at the correct positions in this input/output device, the read image information is almost exactly located on the printing paper. Can be printed in position.

[Brief explanation of drawings]

Fig. 1 is a front view of a reading head and a print head in an embodiment embodying the present invention, Fig. 2 is a perspective view of the embodiment, Fig. 3 is a sectional view of the embodiment, and Fig. 4. is a block diagram, and FIG. 5 is a diagram for explaining the printing operation of the print head and the reading operation of the reading head.

Claims (1)

[Claims] 1. The reading units that read the image information written on the paper are arranged across the width of the paper at a pitch that is larger than the pitch of a preset reading resolution in order to read the image information. and a printing section that prints the image information read by the shuttle-type reading head, etc., and a printing section that prints the paper width at a pitch that is larger than the printing density pitch set in advance for printing the image information. a shuttle-type print head disposed across the space; a transport means for integrally transporting the shuttle-type reading head and the shuttle-type print head in the paper width direction; When printing, the reading section and the printing section are provided with a detection means for detecting a position to be read and a position to be printed at the reading resolution and printing density, and the at least one of the above-mentioned at least An input/output device characterized in that a set of a reading section and a printing section are arranged. 2. A set of reading sections and printing sections arranged near the straight line are arranged at the ends of the reading head and printing head in the sheet width direction. Input/output devices listed in scope 1.