JPH0450692Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a manual scanning device that reads image information on a document by moving the device body by manual scanning, and then prints the read information.

[Prior Art and its Problems] Recently, a manual scanning copying apparatus has been considered, which reads image information by moving the main body of the apparatus by manual scanning, and then prints the read information.
This type of manual scanning copying device generally uses a one-dimensional image sensor to read image information in synchronization with a timing signal generated at a predetermined cycle. If the moving speed of the image information is too fast, the sampling interval for image information becomes long, and there will be parts where reading is not performed. Furthermore, even if the timing signal cycle is changed according to the moving speed of the main body of the device, there is a limit to the readable speed or printable speed, and if the maximum speed is exceeded, the reading or printing operation will not be able to be done in time. There is a drawback that poor reading or printing may occur.

[Purpose of the invention] The present invention was devised in view of the above-mentioned drawbacks, and it is possible to prevent the movement speed from becoming too fast even when the main body of the device is moved manually, and to prevent image data reading errors and printing errors from occurring. It is an object of the present invention to provide a manual scanning device that can prevent the above.

[Key Points of the Invention] In other words, the manual scanning device according to the present invention generates a pulse signal having a frequency corresponding to the rotational movement of a rotating body that rotates in contact with the document surface when the main body of the device is manually moved. The rotational movement of the rotating body is braked by an electrical signal output in accordance with the pulse signal frequency, and the moving speed of the main body of the apparatus is limited.

[Embodiment of the invention] An embodiment of the invention will be described below with reference to the drawings. FIG. 1 shows the external configuration of a handy copy machine embodying the present invention. In the same figure, 1 is the main body of the device, that is, the main body of the handy copy machine, which has dimensions of, for example, 70 mm in width, 30 mm in thickness, and 160 mm in height, and has an effective reading width of 40 mm and an effective print width of 40 mm.
mm, reading memory length 200mm, reading dot density
8dot/mm, print dot density 8dot/mm is assumed. However, the above handy copy machine body 1
is provided with a head portion HA for reading and printing at its tip, that is, its lower end in the figure. This head portion HA is formed to have a width and thickness smaller than that of the handy copy machine main body 1,
A stepped portion D is formed between the handy copy machine main body 1 and the main body 1 of the handy copy machine. The front end surface of the head section HA is formed obliquely from the center toward both sides, and a reading section 2 and a printing section 3 are provided on the sloped sections 1a and 1b, respectively. In addition, the handy copy machine body 1 is provided with a power/read/print switch 4 on one side at the bottom in the figure, and operation keys 5a and 5b are provided on both the front and back surfaces of the machine so as to face each other. It will be done. The operation keys 5a and 5b are formed into a flat plate shape, and the handy copy machine main body 1 can be moved back and forth by holding the upper surfaces thereof by hand. The power/read/print changeover switch 4 is used to designate power on/off, reading, and print operation modes, and is configured to turn on the power when each of the reading and print modes is designated. Further, the handy copy machine main body 1 is provided with a clear key 6 and a density adjustment volume 7 for adjusting print density at an end opposite to the side where the reading section 2 and printing section 3 are provided. Clear key 6 above
is used to erase the image memory when reading an image, and is used to locate the beginning of image data when printing. Further, the handy copy machine main body 1 is provided with a power supply LED 8 in the vicinity of the reading section 3, and a memory LED 9 is arranged on the upper end side of the front part in the figure.

When reading a document using the handy copy machine, the power/read/print switch 4 is set to the "read" position. When the power/read/print switch 4 is set to the "read" position, the power is turned on and the power LED 8 lights up.
In this state, the reading section 2 is brought into contact with the document surface and moved while pressing the operation keys 5a and 5b. In this case, if the moving speed of the handy copy machine main body 1 is too fast, a speed limiting device described later applies braking.

If you want to print out the scanned image data, switch the power/read/print switch 4 to the "Print" position, then touch the print unit 3 to the recording paper A (plain paper) and press the operation key. Handy copy machine body 1 while pressing 5a and 5b
This is done by moving in the direction of arrow X.

Next, the details of the reading section 2 and the printing section 3 provided in the handy copy machine main body 1 will be explained in the second section.
This will be explained with reference to the drawings and FIG. The reading unit 2 is a second
As shown in Figures a and b, a light source 11 consisting of an LED array is disposed in the handy copy machine main body 1 in the vicinity of the sloped portion 1a, and this light source 11 allows light to be read through the reading window 12 provided on the sloped portion 1a. The illuminating device B illuminates the original B to be read. In addition, a light guide 13 is provided in the handy copy machine main body 1 and extends upward from near the slope portion 1a, and a lens 14 and a one-dimensional image sensor 15 are sequentially arranged at a predetermined interval on the upper end side of the light guide 13. kept and placed. In the one-dimensional image sensor 15,
For example, in a 1024-bit one-dimensional CCD,
320 bits (8 dots/mm and 40 mm width) are used. The lens 14 and the one-dimensional image sensor 15 are held at predetermined positions by a support 16. This support body 16 is fixed to an inner frame 17 provided inside the handy copy machine main body 1 at a predetermined interval. An electronic component mounting section 18 and a battery storage section 1 are located close to the support body 16.
9 is provided, and the one-dimensional image sensor 1 is mounted on the circuit board 20 mounted on the electronic component mounting section 18.
5 is connected. Further, the circuit board 20 includes:
The clear key 6, density adjustment volume 7, etc. are connected.

A thermal head 21, an ink ribbon roll 22, a ribbon winding transmission roller 23, and an ink ribbon winding roll 24 are provided within the inner frame 17, and rubber rollers 25a, 25b are provided between the inner frame 17 and the handy copy machine main body 1. , gears 26, 27, 2
8, 29, and 30 are provided. Above rubber roller 2
5a, 25b are rotatably mounted on the inner frame 17 via the shaft 31, and their outer peripheral surfaces are formed on the sloped portions 1a, 1b.
It is designed to slightly protrude outside from notches 32 provided on both sides. The gear 26 is coaxially fixed to one side of the rubber roller 25a. This gear 26 is formed to have a smaller diameter than the rubber roller 25a, and is coupled to a gear 28 with an intermediate gear 27 interposed therebetween. This gear 28 is 1
It is connected to the shaft of the ribbon winding transmission roller 23 via a directional clutch 33. This one-way clutch 33 restricts the rotation of the primary side by 2 times only during printing operation.
It is configured to transmit the rotation of the gear 28 to the next side, that is, to the ribbon winding transmission roller 23 side. Further, an encoder disk 34 is attached to the primary side of the one-way latch 33, and the one-way clutch 33
The gear 28 and the encoder disk 34 are adapted to rotate together, regardless of clutch action. As shown in FIG. 3, the encoder disk 34 has a plurality of slits 35 radially provided at regular intervals. Further, an LED 36 and a photo sensor 37 are arranged so as to face each other with the encoder disk 34 interposed therebetween.
In this case, the LED 36 is installed inside the handy copy machine main body 1, and the photo sensor 37 is installed inside the inner frame 17, as shown in FIG. 2a. A through hole 38 is provided in the portion of the inner frame 17 where the photo sensor 37 is attached, so that the projected light from the LED 36 enters the photo sensor 37 through the slit 35 of the encoder disk 34 and the through hole 38. ing. That is, the encoder 39 is composed of the encoder disk 34, the LED 36, the photo sensor 37, and the like.

Further, a disk-shaped electromagnetic coil 40a is fixed to the outer side surface of the gear 27, which rotates via the gear 26 as the rubber roller 25a rotates. This electromagnetic coil 40a is excited when the moving speed of the handy copy machine main body 1 is too fast when reading a document, for example. Brake pad 40b that can be rotated freely
will be established. When the electromagnetic coil 40a is excited, the brake pad 40b moves inward on the shaft and is attracted to the coil surface. At this time, the outer peripheral end of the pad 40b is pressed against the side surface of the gear 27. However, the rotational force of the pad 40b that tries to rotate together with the gear 27 is suppressed by a rotation suppressing piece 40c formed protruding from the inner surface of the handy copy machine main body 1. In other words, this rotation suppressing piece 40c is
As shown in FIG. 3, the brake pad 40b
The brake pad 40b is fitted into the restraining piece locking groove 40d to restrain the rotational movement of the brake pad 40b.

On the other hand, on the inclined surface 1b of the print section 3, a print window 41 and an ink ribbon guide window 42 are provided in parallel, as shown in FIG. In this case, the ink ribbon guide window 42 is provided so as to be located inside the print window 41.
The thermal head 21 is located in the print window 41.
The heat generating portion 21a is inserted and positioned so that its tip surface slightly protrudes from the slope portion 1b.
Then, the operation key 5a of the handy copy machine main body 1
As shown in FIG. 2b, a slit 43 is provided in the stepped portion D on the side where the ink ribbon roll 22 is provided, and the thermal transfer ink ribbon 22a pulled out from the ink ribbon roll 22 passes through the slit 43 into the handy copy machine main body 1. The ink is led out to the outside, and then introduced into the handy copy machine main body 1 through the ink ribbon guide window 42 through the heat generating portion 21a of the thermal head 21. The ink ribbon 22a introduced into the handy copy machine main body 1 has a shaft 31,
The ink ribbon is guided by an ink ribbon guide 44 and a ribbon take-up transmission roller 23 and wound onto an ink ribbon take-up roll 24. Furthermore, the handy copy machine main body 1 has a lid body 1 provided with an operation key 5b as shown in FIG. 2b.
c is formed so that it can be opened and closed by a hinge 45, so that the ink ribbon 22a can be replaced, the interior can be inspected, etc.

Next, the configuration of the electronic circuit formed on the circuit board 20 will be explained with reference to FIG. 4. The encoder 39 is connected to the encoder disk 3 as described above.
4, an LED 36, a photo sensor 37, etc., and outputs a pulse signal corresponding to the amount of movement of the handy copy machine main body 1, that is, a movement amount detection signal. The movement amount detection signal output from the encoder 39 is sent to the control section 51 and the timing signal generation section 52. The control unit 51 also includes the power/read/print switch 4,
Operation signals are supplied from a group of keys and switches 54 such as operation keys 5a and 5b, clear key 6, density adjustment volume 7, etc., and a temperature detection signal is supplied from a temperature sensor 55 that detects the temperature of the thermal head 21. Further, the control unit 51 includes an internal power supply voltage detector (not shown). and,
The control section 51 controls the LED section 5 according to the input signal.
In addition to controlling the lighting of the power LED 8 and memory LED 9 at 0 and controlling other parts,
Operation commands S ₁ and S ₂ are given to the timing signal generator 52 in accordance with the reading mode or print mode specified by the power/reading/printing switch 4 . In this case, the control unit 51 provides the timing signal generating unit 52 with an operation command S ₁ in the reading mode, and an operation command S ₂ in the print mode.

The timing signal generation section 52 includes a control section 51
When a motion command S ₁ is given from
It generates a CCD exposure timing signal, and also generates various timing signals such as a predetermined number of read timing signals a, a serial/parallel conversion signal b, and a clock pulse c in synchronization with the movement amount detection signal from the encoder 39. Further, the timing signal generation section 52 generates a print timing signal when the operation command _S2 is given from the control section 51. The CCD exposure timing signal outputted from the timing signal generation section 52 is sent to the one-dimensional image sensor 15, the reading timing signal a is sent to the A/D conversion section 57, and the serial/parallel conversion signal b is sent to the serial/parallel conversion section 58. Then, the clock pulse c is sent to the address counter 61, respectively. The one-dimensional image sensor 15 reads the reflected light from the original B in synchronization with the CCD exposure timing signal, and outputs it to the A/D converter 57 via the amplifier 56. The A/D converter 57 converts the input signal into a black and white binary signal according to the reading timing signal a, and the serial/parallel converter 58
Output to. This serial/parallel converter 58
converts the input signal into a parallel signal every 8 bits using the serial/parallel conversion signal b,
Image data memory 6 via data selector 59
Output to 0. Further, the data selector 59 has a data line connected to the control section 51, and either the serial/parallel conversion section 58 or the control section 51 is selected by the select signal d from the control section 51. The write address (row and column address) of the image data memory 60 is indicated by an address counter 61 and designated via an address selector 62. Further, the read address of the image data memory 60 is given by the control section 51 via the address selector 62. The address selector 62 selects the address counter 61 side in the read mode and selects the control unit 51 to designate the address of the image data memory 60 in the print mode in response to the select signal e from the control unit 51.

Further, a frequency-voltage conversion circuit (F-V) 63 is connected to the encoder 39. This frequency-voltage conversion circuit 63 is configured, for example, by a charge pump type, a differentiation circuit, a full-wave rectification and smoothing circuit, etc., and converts the movement amount detection signal outputted from the encoder 39 as the handy copy machine main body 1 moves, as shown in FIG. The voltage signal from the frequency-voltage conversion circuit 63 is input to the operational amplifier 64 via the resistor _R1 . This operational amplifier 64
is given a reference voltage by resistor R ₂ ,
Further, a resistor _R3 is interposed between the input and output. In other words,
When the voltage signal from the frequency-voltage conversion circuit 63 exceeds the reference voltage, the operational amplifier 64
The amplified output is transferred to the comparator 6 as shown in Figure b.
Output to the (+) terminal of 5. This comparator 6
A sawtooth wave signal from the sawtooth wave generation circuit 66 is input to the (-) terminal of the circuit 5. Comparator 6
5 is the operational amplifier 64 as shown in FIG.
The amplified output signal from the comparator 65 and the sawtooth wave signal from the sawtooth wave generation circuit 66 are input together to create a PWM (pulse width modulation) signal.
It is input to the base terminal of 7. This transistor 67 controls the excitation of the electromagnetic coil 40a shown in FIG. 2 through its emitter terminal, and the collector terminal of this transistor 65 is connected to the power supply Vcc through a resistor _R4 . In other words, the speed change of the copy machine main body 1 becomes faster and the pulse period of the movement amount detection signal output from the encoder 39 becomes shorter, so that the voltage signal from the frequency-voltage conversion circuit 63 exceeds the reference voltage, and the voltage signal from the operational amplifier 64 When the amplified signal is output, the comparator 65 outputs a pulse width signal according to the amplified output value,
The transistor 67 begins to excite the electromagnetic coil 40a. That is, when the electromagnetic coil 40a is excited, the brake pad 40b in FIGS. 2 and 3 presses against the gear 27 and suppresses its rotational movement, thereby reducing the encoder 39, the electromagnetic coil 40a, and the frequency voltage. Conversion circuit 6
3 to transistor 67 constitute a speed limiting circuit when the handy copy machine main body 1 moves. Here, the reference voltage by the resistor R ₂ of the operational amplifier 64, which is the reference for starting the speed limit, is close to the frequency-voltage conversion output value corresponding to a speed below the maximum readable speed when reading a document, and when printing is The frequency is set close to the voltage conversion output value corresponding to a speed less than the maximum printable speed. In other words, as shown in Figure 7, if the lower limit of movement speed at which reading is impossible is Vproh, then
When the moving speed of the copying machine main body 1 approaches the above-mentioned Vproh, a braking force on the gear 27 starts to be generated.

When the reading of the document is completed and the mode is switched to the print mode, the control unit 5
1 outputs the operation command _S2 to the timing signal generator 52 as described above, and also outputs the image data memory 6 in response to the movement amount detection signal from the encoder 39.
The stored data of 0 is sequentially read out via the data selector 59. When the control unit 51 reads out the image data from the image data memory 60, the control unit 51 controls the temperature sensor 55.
The energization time is set based on the head temperature, the detection data of the power supply voltage detector, and the value of the density adjustment volume 7, and outputted as print data to the thermal head drive circuit 68. The thermal head driving circuit 68 drives the thermal head 21 in synchronization with a timing signal from the timing signal generating section 52 when print data is sent from the control section 51 .

Next, the operation of the above embodiment will be explained. When reading information such as characters and images recorded on a document, first turn on the power/read/print switch 4.
from the “power off” position to the “read” position. When the power/read/print switch 4 is switched to the "read" position, the power is turned on and each circuit section becomes operational. Also, at this time, the control section 51 turns on the power LED 8 in the LED section 50 to indicate that the power is turned on, and also provides the operation command S ₁ to the timing signal generation section 52 . In this state, the user brings the reading section 2 formed in the head section HA into contact with the desired reading surface of the document B, as shown in FIG. 2b, and presses the operation key 5.
While pressing keys a and 5b, move the handy copy machine main body 1 forward toward the operation key 5a side. At this time, the projected light from the light source 11 is irradiated onto the surface of the document B through the reading window 12 provided on the slope portion 1a, and the reflected light is incident on the one-dimensional image sensor 15 via the light guide 13 and lens 14. On the other hand, as the handy copy machine main body 1 moves in the X′ direction,
Rubber rollers 25a and 25b rotate in contact with side B of the document, and the rotation is transmitted to gear 2 via gears 26 and 27.
8. The rotation of the gear 28 is idly rotated by the one-way clutch 33 and is not transmitted to the ribbon winding transmission roller 23, so that the ink ribbon 22a does not move in this case. And gear 28
Along with the rotation, the encoder disk 34 rotates at a speed proportional to the moving speed of the handy copy machine main body 1. By this rotation of the encoder disk 34, the light sent from the LED 36 to the photo sensor 37 via the slit 35 is controlled intermittently, and the photo sensor 37 outputs a pulse signal. The pulse signal output from the photo sensor 37 becomes the output of the encoder 39 in FIG.
2, and the frequency-voltage conversion circuit 6 of the speed limiting circuit.
Sent to 3.

Here, for example, when the reading movement speed of the handy copy machine body 1 increases and reaches the maximum reading speed, the pulse signal frequency from the encoder 39 increases and the output voltage of the frequency-voltage conversion circuit 63 changes to the operational amplifier. 64 reference voltage. Then, based on the output signal from the operational amplifier 64 and the sawtooth wave signal from the sawtooth wave generation circuit 66, the comparator 65 outputs a pulse width signal according to the signal ratio, and the transistor 67
to drive. As a result, the electromagnetic coil 40a is excited and controlled at time intervals according to the pulse width of the pulse signal, and the brake pad 40b in FIGS. 2 and 3 slides on the axis of the gear 27 and is attracted to the electromagnetic coil 40a. Ru. The outer peripheral end of the brake pad 40b is connected to the electromagnetic coil 40.
According to the excitation operation of a, the gear 27 is pressed against the gear 2
By braking the rotational movement of the rubber roller 25a via the roller 6, the moving speed of the copying machine main body 1 is suppressed. In this case, as shown in FIG. 6, the higher the output voltage value from the operational amplifier 64 with respect to the above-mentioned sawtooth signal, the wider the pulse width of the signal that drives the transistor 67; As shown in , when the moving speed of the copying machine body 1 approaches the lower limit speed at which reading becomes impossible, the rotational braking force of the rubber roller 25a increases rapidly. Therefore, when the moving speed of the handy copy machine main body 1 reaches near the readable limit speed,
Its movement movement is now forcibly suppressed,
It is possible to prevent incorrect input from occurring due to poor reading due to too fast movement speed.

On the other hand, the timing signal generation section 52 controls the control section 5.
When a motion command S ₁ is given from 1 to 1, a constant cycle of
Generates a CCD exposure timing signal and provides it to the one-dimensional image sensor 15, as well as encoder 39
A read timing signal a and a serial/parallel conversion signal b are generated in response to the movement amount detection signal from the A/D converter 57 and the serial/parallel converter 58, respectively. Furthermore, the timing signal generator 52 generates a clock pulse c in synchronization with the serial/parallel conversion signal b, and outputs it to the address counter 61.

Therefore, the one-dimensional image sensor 15 is
The timing signal generator 52 outputs a signal corresponding to the light reflected from the B side of the document, that is, an image signal, in synchronization with the CCD exposure timing signal. The output signal of this one-dimensional image sensor 15 is amplified by an amplifier 56 and sent to an A/D converter 57. The A/D converter 57 converts the image signal sent via the amplifier 56 into a serial digital signal in synchronization with the read timing signal a from the timing signal generator 52, and converts the image signal sent via the amplifier 56 into a serial digital signal. Output to. The serial/parallel converter 58 converts the serial input signal into parallel image data, for example every 8 bits, in synchronization with the serial/parallel conversion signal b sent from the timing signal generator 52, and sends it to the data selector 59. Output. This data selector 59 is switched to the serial/parallel converter 58 side by select d from the controller 51 when the reading mode is designated. Therefore, the image data output from the serial/parallel converter 58 is sent to the image data memory 60 via the data selector 59. This image data memory 60
The address is specified via the address selector 62, but at this time, the address selector 62 is switched to the address counter 61 side by the select signal e from the control section 51. Therefore, the address of the image data memory 60 is specified by the count output of the address counter 61. The address counter 61 has its digit addresses sequentially incremented by "+1" by the clock pulse c from the timing signal generator 52, and specifies the address of the image data memory 60. When one line of image data is written into the image data memory 60, the timing signal generator 52 stops generating the timing signal and waits until the next movement detection signal is sent from the encoder 39. state. Thereafter, similar operations are repeated, and the image data read from document B is sequentially written into image data memory 60.

Next, the operation when printing out the image data read from the original B as described above will be explained. When printing out image data, switch the power/read/print switch 4 to the print position. By switching the power supply/read/print changeover switch 4, the print mode is entered, and the control section 51 controls the timing signal generation section 5.
At the same time, the data selector ₅₉ and address selector 62 are switched to the control section 51 side by the select signals d and e. In this state, the user brings the printing section 3 in the head section HA into contact with the recording paper A, as shown in FIG. 1, and moves the handy copy machine main body 1 in the direction of the arrow X shown while pressing the operation keys 5a and 5b. As the handy copy machine main body 1 moves, the rubber roller 25
a and 25b rotate, and the rotation causes gears 26 and 27
is transmitted to gear 28 via. As the gear 28 rotates, the encoder disk 34 rotates, and a movement detection signal is taken out from the photo sensor 37 in accordance with the movement speed of the handy copy machine main body 1, as in the above reading.

Further, the rotation of the gear 28 is transmitted to the ribbon winding transmission roller 23 through a one-way clutch 33, and further transmitted to the winding roll 24 through gears 29 and 30. As a result, the ribbon winding transmission roller 23 and the winding roll 24 rotate, and from the ink ribbon roll 22 to the slit 43 of the stepped portion D,
The ink ribbon 22a, which has passed through the heat generating part 21a of the thermal head 21 and the ink ribbon guide window 42, and is guided by the shaft 31, the ink ribbon guide 44, and the ribbon winding transmission roller 23, is wound up. In this case, the ribbon winding transmission roller 23 is moved in accordance with the amount of movement of the handy copying machine main body 1 so as to prevent slipping between the recording paper A and the ink ribbon 22a as the handy copying machine main body 1 moves. Rotate.

On the other hand, the movement amount detection signal output from the photo sensor 37 is transmitted to the encoder 39 as described above.
The output signal is sent to the control section 51, the timing signal generation section 52, and the frequency-voltage conversion circuit 63 of the speed limiting circuit. The timing signal generation section 52
outputs a print timing signal to the thermal head drive circuit 68 in response to the movement amount detection signal sent from the encoder 39. Further, the control unit 51 sequentially specifies the row and digit addresses of the image data memory 60 according to the movement amount detection signal from the encoder 39, and selects the image data stored in the image data memory 60 via the data selector 59. Read out. Furthermore, the control unit 51 sets the current application time to the thermal head 21 based on the head temperature from the temperature sensor 55, the voltage detection signal from the power supply voltage detector, the adjustment value of the density adjustment volume 7, etc., and reads it out from the image data memory 60. The generated image data is output to the thermal head drive circuit 68. The thermal head drive circuit 68 drives the thermal head 21 according to control data from the control section 51 and timing signals from the timing signal generation section 52. By driving the thermal head 21, image data is thermally transferred onto the recording paper A via the ink ribbon 22a. In this case, as the handy copy machine main body 1 moves, the unused portion of the ink ribbon 22a is fed out from the ink ribbon roll 22,
The used part of the ink ribbon after being printed by the thermal head 21 is placed on the ink ribbon take-up roll 24.
are wound up one after another. By moving the handy copy machine main body 1 as described above, the image data stored in the image data memory 60 is sequentially recorded on the recording paper A.

Further, in the speed limiting circuit, the moving speed of the handy copy machine main body 1 is determined based on the voltage signal output according to the pulse signal frequency from the encoder 31 and the reference voltage signal from the operational amplifier 64 in the same manner as in the reading mode. It is determined whether or not the speed has exceeded the set maximum speed, and when it is detected that the speed has exceeded the maximum speed, the transistor 67 is driven by the pulse width signal from the comparator 65, and the movement operation of the handy copy machine main body 1 is forced. Brake accordingly. Thereby, it is possible to suppress the printing movement speed from being too fast and prevent erroneous output due to printing defects.

Therefore, it is possible to move the handy copy machine main body 1 with stable operation both when reading a document and when outputting and printing data.

In addition, the brake pad 40b in the above embodiment
may be attached directly to the rotation axis of the gear.

[Effects of the invention] As described above, according to the invention, when the main body of the apparatus is manually moved and scanned, a pulse signal having a frequency corresponding to the rotational operation of the rotating body rotating in contact with the document surface is generated, The electrical signal output according to the pulse signal frequency is used to brake the rotation of the rotating body and limit the speed of the main body of the device, so that image information can be read without the moving speed becoming too fast. It is possible to provide a manual scanning device that can prevent defects and printing defects from occurring.

[Brief description of the drawings]

The drawings show an example in which the present invention is implemented in a small-sized copying machine, in which Fig. 1 is a perspective view showing the external configuration, Fig. 2a is a sectional view showing the internal structure of Fig. 1,
Fig. 2b is a sectional view taken along the - line in Fig. 2a, Fig. 3 is a perspective view showing the main internal components, Fig. 4 is a block diagram showing the overall configuration of the electronic circuit, and Fig. 5a. and b are diagrams showing the output voltage characteristics of the frequency voltage converter and operational amplifier of the speed limiting circuit in FIG. 4, respectively. FIG. 6 is a diagram showing the pulse width modulation operation by the comparator of the speed limiting circuit in FIG. 4, and FIG. This figure is a diagram showing the braking force characteristic of the apparatus moving speed generated by the electromagnetic coil excitation control of the speed limiting circuit in FIG. 4. 1... Handy copy machine main body, 2... Reading section,
3...Print section, 4...Power/read/print selection switch, 5a, 5b...operation keys, 6...
Clear key, 7...Density adjustment volume, 8...
Power LED, 9...Memory LED, 11...Light source,
12... Reading window, 13... Light guide, 14... Lens, 15... One-dimensional image sensor, 16...
Support body, 17...Inner frame, 18...Electronic component mounting section, 19...Battery storage section, 20...Circuit board, 21...Thermal head, 22...Ink ribbon roll, 23...Constant velocity feed roller , 24...
Ink ribbon winding roll, 25a, 25b...
Rubber roller, 26-30... Gear, 32... Notch, 33... One-way clutch, 34... Encoder disk, 35... Slit, 36... LED,
37...Photo sensor, 38...Through hole, 39...
Encoder, 40a... Electromagnetic coil, 40b...
Brake pad, 40c...Rotation prevention piece, 40d
... Suppression piece locking groove, 41 ... Print window, 42 ...
...Ink ribbon guide window, 43...Slit, 4
4... Ink ribbon guide, 45... Hinge, 5
1...control section, 52...timing signal generation section,
54... Switch group, 55... Temperature sensor, 56
...Amplifier, 57...A/D converter, 58...Serial/parallel converter, 59...Data selector, 60...Image data memory, 61...Address counter, 62...Address selector, 63...
...Frequency-voltage conversion circuit, 64...Operational amplifier, 6
5...Comparator, 66...Sawtooth wave generation circuit, 67...Transistor, 68...Thermal head drive circuit.

Claims (1)

[Scope of utility model registration request] A rotating body that rotates in contact with the document surface when the main body of the apparatus is manually moved, a moving pulse generating means that generates a pulse signal having a frequency corresponding to the rotational operation of the rotating body, and a pulse generated by the moving pulse generating means. an electric signal generating means for generating an electric signal according to the signal frequency; and a moving speed for controlling the rotational operation of the rotating body, the braking operation of which is controlled by the electric signal generated by the electric signal generating means. A manual scanning device comprising: a braking means.