JPH0671299B2 - Portable printing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in the following order.

A Industrial Field of Use B Outline of Invention C Conventional Technology D Problems to be Solved by the Invention E Means for Solving Problems F Action G Example G-1 Configuration of the First Example (First Example) G) Image recording operation (FIG. 1) G-3 Configuration and operation of circuit system in first embodiment (FIGS. 2 and 3) G-4 Configuration of second embodiment (fourth embodiment) (Fig. 5) G-5 Image reading / recording operation (Figs. 4 and 5) G-6 Configuration and operation of circuit system in the second embodiment (Figs. 6 and 7) G-7 MODIFIED EXAMPLE H Effect of the Invention A Field of Industrial Application The present invention relates to a portable type in which an image based on an image signal read from a memory or obtained from an external device is recorded on recording paper. Related to a printing device.

B Outline of the Invention According to the present invention, an image signal read from a built-in memory or a mounted memory or an image signal supplied from the outside is sent from an image signal sending unit to an image recording unit, and the image recording unit outputs the image signal. In a portable printing apparatus for recording an image based on a recording sheet on a recording sheet, a traveling roller that is rotated in contact with a recording sheet surface or a surface on which the recording sheet is arranged is provided, and based on a timing signal obtained according to the rotation of the traveling roller. By performing operation control in the image signal sending unit and the image recording unit, for example, an image can be recorded at an arbitrary position on the recording paper surface by a simple operation of manually moving the recording paper surface. It was made possible.

C. Related Art Various printers have been proposed which reproduce an image on paper based on an electric signal representing an image, that is, an image signal. Such printers are classified into a thermal recording type, an inkjet recording type, a dot recording type using an ink ribbon, etc., depending on the type of the printing head unit. Generally, these printers are formed as stationary equipment and used in various computers, word processors, etc. An image corresponding to an image signal supplied from the information signal processing device is used to be connected to the information signal processing device and is recorded on a recording paper.

D. Problems to be Solved by the Invention As described above, the conventionally proposed printer is usually installed at a specific place, and a recording paper having a predetermined size is mounted and operated, and then mounted. An image recorded on the recorded recording sheet is obtained. For this reason, it is extremely convenient to perform image recording on a predetermined recording paper based on a preset format, but recording a desired image at an arbitrary position on a recording paper of an arbitrary size is not possible. This is not possible, and there is the inconvenience that image recording cannot be freely performed by a simple operation.

In view of such a point, the present invention is provided with an image recording section that is brought into contact with a recording sheet to record an image based on an image signal on the recording sheet, and is formed in a relatively small size as a whole. In use, it is possible to record a desired image at an arbitrary position on a recording paper surface of an arbitrary size by a simple operation of moving the image recording unit on the recording paper surface in a state of being in contact with the recording paper. It is an object of the present invention to provide a portable printing device having the above-mentioned structure.

E Means for Solving the Problems In order to achieve the above-mentioned object, the portable printing apparatus according to the present invention is an image signal transmitting unit for transmitting an image signal read from a memory or an image signal supplied from the outside. And an image recording unit which is brought into contact with the recording paper and records an image based on the image signal sent from the image signal sending unit on the recording paper, and in addition to the recording paper surface or the surface on which the recording paper is arranged, A running roller that is rotated in contact with the running roller, a timing signal generating section that obtains a timing signal according to the rotation of the running roller, and a drive signal generating section that supplies a driving signal for operating the image recording section.
And a timing signal supply controller that supplies the timing signal from the timing signal generator to the image signal transmitter and the drive signal generator in a period set in accordance with the drive signal from the drive signal generator. And an operation control unit for controlling the sending of the image signal in the image signal sending unit and the printing of the image on the printing paper in the image printing unit.

In the portable printing apparatus according to the present invention configured as described above, when the image recording unit is brought into contact with the recording paper and moved on the recording paper surface, the traveling roller moves to the recording paper surface, Alternatively, it rotates while being in contact with the surface on which the recording paper is arranged. Then, a timing signal corresponding to the rotation of the traveling roller is obtained from the timing signal generation unit, and the timing signal is generated in the operation control unit during the period set according to the drive signal for operating the image recording unit from the drive signal generation unit. An operation is performed in which the timing signal from the generator is supplied to both the image signal transmitter for transmitting the image signal to the image recorder and the drive signal generator.
As a result, under the control of the operation control means based on the timing signal, the image signal sending section images the image signal read from the memory built in or attached to the image signal or the image signal supplied from the outside. The image is supplied to the recording section, and the image recording section records an image on the recording sheet based on the supplied image signal. At that time, since the timing signal is supplied to the image signal transmitting section and the drive signal generating section during the period set in accordance with the drive signal for operating the image recording section from the drive signal generating section, the timing signal generating section Even if an undesired timing signal is sent from the device, it is possible to prevent the image recording by the image recording unit from being damaged. As a result, the image is sequentially recorded on the portion of the recording paper surface where the device has moved as the device moves.

Therefore, for example, a desired image can be recorded at an arbitrary position on the recording paper surface of an arbitrary size by a simple operation of manually moving the entire device on the recording paper surface, and the operation can be performed with one hand. It is said that

G Embodiment G-1 Configuration of First Embodiment (FIG. 1) FIG. 1 shows an example of a portable printing apparatus according to the present invention. This example has a box 10, and the bottom 10 of the box 10 is
A is provided with a recording section opening 11 and a pair of roller openings 12a and 12b arranged at a position sandwiching the recording section opening 11, and a top plate of the box 10. A card memory attachment / detachment hole 13 is provided in the portion 10B.

A pair of running rollers 14A and 14B are provided on the side of the bottom surface 10A in the box 10, and a part of each of them is provided as a roller opening.
It is rotatably arranged so that it can be projected from the bottom surface 10A of the box 10 from 12a and 12b. These traveling rollers 14A and 14B have bearings 16a and 1a whose shafts are attached to both sides of a support member 15 fixed in the casing 10.
Each is supported by 6b. Further, at a position sandwiched by the traveling rollers 14A and 14B in the casing 10, a heat-sensitive recording unit 17 forming an image recording unit is provided, and a front portion 10C of the casing 10 is provided.
Along with, and the lower end 17a thereof is arranged so as to be projected from the recording portion opening 11 to the outside of the bottom surface portion 10A of the casing 10. The thermal recording section 17 is fixedly supported by the supporting member 15, the lower end 17a has a built-in thermal head, and the end surface of the thermal recording section 17 is in contact with the surface of the recording paper 21. Make a record.

Furthermore, on the top plate portion 10B side of the box 10 in the box 10,
An image signal transmitting section in which a card memory 18 inserted through a card memory attaching / detaching hole 13 formed in the top plate section 10B is mounted, and a control block 19 containing a control circuit section is supported by a supporting member 15. It is located in. The image signal sending unit provided in this control block 19 is a card memory 18 inserted and mounted through the card memory attaching / detaching hole 13.
Then, the image signals stored therein are read out and sequentially sent to the thermal recording section 17 forming the image recording section, for example, one line image at a time. Further, the control circuit unit built in the control block 19 is electrically connected to each of the image signal sending unit, the thermal recording unit 17, and the rotary encoder 20 provided in association with the traveling roller 14A. Based on the timing pulse signal obtained from 20, the image signal sending section sequentially sends the image signals read from the card memory 18 to the thermal recording section 17 by one line image equivalent, and the thermal recording section 17 , Controlling the operation of recording an image on the recording paper 21 in accordance with the image signal from the image signal sending unit.

The rotary encoder 20 includes a disk 20a attached to the shaft 14Aa of the traveling roller 14A and having a large number of slits arranged in the circumferential direction thereof, and a photosensor 20b arranged to detect the slits of the disk 20a. It is equipped with. Then, when the disc 20a rotates with the rotation of the traveling roller 14A, the photosensor 20b responds to the slit of the disc 20a detected by the photosensor 20b.
A timing pulse signal corresponding to the rotation of 4 A is obtained and supplied to the control block 19.

G-2 Image Recording Operation (FIG. 1) When an example of the portable printing apparatus according to the present invention having the above-mentioned configuration is used for recording an image on a recording paper, it is a box body. A card memory 18 is inserted through a card memory attaching / detaching hole 13 formed in a top plate portion 10B of 10 and attached to an image signal transmitting portion provided in a control block 19. Then, from the recording portion opening 11 to the box 10
The bottom surface 10A of the heat-sensitive recording portion 17 protruding outside the end surface in the lower end portion 17a is in contact with the surface of the recording paper 21, the traveling roller 14A and 14B of the roller opening 12a and 12b of the housing 10 respectively. The box 10 is moved on the surface of the recording paper 21 while the portion protruding to the outside of the bottom surface portion 10A is brought into contact with the surface of the recording paper 21. As a result, the traveling rollers 14A and 14B rotate while being in contact with the surface of the recording paper 21.

At this time, the disk 20a of the rotary encoder 20 rotates in accordance with the rotation of the traveling roller 14A, the timing pulse signal from the rotary encoder 20 according to the rotation of the traveling roller 14A, therefore, the movement of the box 10 on the recording paper 21. A timing pulse signal corresponding to the speed is obtained and is supplied to the control circuit unit incorporated in the control block 19. Then, the control circuit section controls the operation of the image signal sending section and the thermal recording section 17 provided in the control block 19 based on the timing pulse signal from the rotary encoder 20.

Under the control of the operation based on the timing pulse signal from the rotary encoder 20 by the control circuit unit built in the control block 19, the image signal is read out from the card memory 18 by the image signal sending unit.
The image signals are sequentially read one by one for each line image, and the read image signals are sequentially sent to the thermal recording unit 17. And
In the thermal recording unit 17, under the operation control based on the timing pulse signal from the rotary encoder 20 in the control circuit unit, according to the image signal sequentially supplied from the image signal sending unit for each one line image. The thermal head arranged in the lower end portion 17a is operated, and line images are sequentially recorded on the recording paper 21 by thermal recording.

In this way, with the movement of the box 10 on the recording paper 21, the recording paper 21 has an image signal read from the card memory 18 at the portion where the lower end 17a of the thermal recording unit 17 has passed. The base image is recorded.

G-3 Configuration and Operation of Circuit System in First Embodiment (FIGS. 2 and 3) Thermal recording section 17 for performing an operation for recording an image on recording paper 21 and an image signal as described above. The configuration of the circuit system in the portion including the control block 19 including the sending unit and the control circuit and the rotary encoder 20 is, for example, the second
As shown in the figure. In this example,
An image signal sending section 31 provided with a memory control signal generating section 30 for generating a control signal for reading an image signal from the card memory 18 is mounted, and a thermal recording section 17 is provided. Image signal transmitter
A line memory 32 that captures the image signal from the line memory 31, a line memory 33 that latches the image signal captured by the line memory 32, a head drive unit 34 to which the image signal latched by the line memory 33 is supplied, and a head drive unit
A thermal head 35 driven by 34 is provided.

On the other hand, a control block is provided at the output end of the rotary encoder 20.
The control circuit unit 36 incorporated in 19 is connected, and the control circuit unit 36 supplies the timing pulse signal from the rotary encoder 20 to the memory control signal generation unit 30 of the image signal transmission unit 31 through the switch 37, The recording unit drive signal generating unit 38 is provided with the timing pulse signal from the rotary encoder 20 supplied through the switch 37, and based on the timing pulse signal from the rotary encoder 20 and the output signal from the recording unit drive signal generating unit 38. And a switch control section 39 for controlling the switch 37. The recording section drive signal generating section 38 includes a thermal recording section 17
To the line memories 32 and 33 and the head drive unit 34.

With such a configuration, when an operation of recording an image on the recording paper 21 is performed, the rotary encoder 20 rotates, for example, the rotation speed of the traveling roller 14A as shown in FIG. A timing pulse signal RE corresponding to the moving speed of the box 10 on the recording paper 21 is obtained and supplied to the memory control signal generating section 30 and the recording section drive signal generating section 38 via the switch 37. As a result, in response to each timing pulse signal RE under the condition that the timing pulse signal RE arrives from the memory control signal generator 30 at a predetermined interval or longer, as shown in FIG. 3B, for example. The addressing signal ADS is supplied to the card memory 18, and
As shown in FIG. 3C, a read instruction signal () is supplied to the card memory 18 which takes a low level thereafter with reference to the time point of the trailing edge of the timing pulse signal RE and maintains the state for a predetermined period. As a result, the read instruction signal ▲
As shown in FIG. 3D, the image signal MO corresponding to one line image is generated from the address position designated by the address designation signal ADS at that time in the card memory 18 during each period when ▼ takes a low level. It is read out sequentially.

Further, from the recording section drive signal generating section 38, for example, as shown in FIG. 3E, a clock pulse signal C having a predetermined number of pulses obtained based on the timing pulse signal RE.
P, a latch pulse signal L having a leading edge at the trailing edge of the last of the clock pulses CP, as shown in FIG. 3F.
As shown in FIG. 3G and T, the print pulse signal PT having a predetermined width having a leading edge is sent at the time of the trailing edge of the latch pulse signal LT, and the clock pulse signal CP is transferred to the thermal recording unit 17. The line memory 32 is supplied with the latch pulse signal LT to the line memories 32 and 33, and the print pulse signal PT is supplied to the line memory 33 and the head drive unit 34, respectively.

As a result, in the thermal recording section 17, first, the image signal MO corresponding to the first one line image from the image signal sending section 31 is sequentially fetched into the line memory 32 according to the clock pulse signal CP, and then latched. Pulse signal
It is moved to the line memory 33 and latched by LT. Then, in response to the print pulse signal PT, the image signal MO latched in the line memory 33 is supplied to the head drive unit 34, and the head drive unit 34 drives the thermal head 35 based on the image signal MO, thereby recording paper. A line image is recorded for 21.

The recording of the line image on the recording paper 21 thus performed is completed within the period of the pulse width of the print pulse signal PT. Then, the timing pulse signal RE from the rotary encoder 20 that arrives after the trailing edge of the print pulse signal PT is transmitted via the switch 37 to the recording unit drive signal generation unit.
The image signal MO corresponding to the next one line image supplied from the image signal sending unit 31 is sequentially fetched into the line memory 32 according to the clock pulse signal CP, and the operation as described above is performed again. The following line image is recorded on the recording paper 21.

When the image recording operation is performed in the thermal recording unit 17 in synchronization with the operation of sending the image signal MO in the image signal sending unit 31, the switch control unit 39 controls the timing pulse signal RE from the rotary encoder 20 and the recording unit drive signal. A switch as shown in FIG. 3H, which receives the print pulse signal PT from the generator 38 and takes a low level from the trailing edge of the timing pulse signal RE to the trailing edge of the subsequent print pulse signal PT. Control signal CS,
The switch 37 is supplied to the switch 37, and the switch 37 is kept in the OFF state while the switch control signal CS is at a low level, and the switch 37 is kept in the ON state in other periods. Therefore, after the timing pulse signal RE from the rotary encoder 20 is supplied to the memory control signal generation unit 30 and the recording unit drive signal generation unit 38 through the switch 37 in the ON state, the trailing edge of the print pulse signal PT Until the time point, the switch 37 is turned off, and the rotary encoder
Even if the timing pulse signal RE is sent from 20, the timing pulse signal RE is not supplied to the memory control signal generating section 30 and the recording section drive signal generating section 38. As a result, even if the rotary encoder 20 outputs an undesired timing pulse signal RE, the image recorded on the recording paper 21 by the thermal recording unit 17 is prevented from being damaged thereby.

Then, as described above, the recording operation in the thermal recording unit 17 is
This is repeated until the reading of the image signal MO from the card memory 18 in the image signal sending section 31 is completed, and as a result, an image based on the image signal MO stored in the card memory 18 is recorded on the recording paper 21.

G-4 Configuration of Second Embodiment (FIGS. 4 and 5) FIGS. 4 and 5 show another example of the portable printing apparatus according to the present invention. In this example, an image recording operation mode in which an image is recorded on a recording sheet and an image reading operation mode in which an image from the document surface is read can be set. In addition, this example also has a casing 10, and the bottom face portion 10A of the casing 10 has a rear face portion 1 of the casing 10.
The recording unit opening 11 on the 0D side is provided, and the housing 10
An image reading window 41 is provided on the front portion 10C side, and a pair of roller openings 12a and 12b are provided at positions sandwiching the recording portion opening 11 and the image reading window 41. Further, the top plate portion 10B of the box 10 is provided with a mode selection switch 42 for selecting an image recording operation mode and an image reading operation mode.

On the bottom surface 10A side inside the box 10, a pair of traveling rollers 1
4A and 14B partially cover the roller openings 12a and 12 respectively.
It is rotatably arranged so as to be protruded from b to the outside of the bottom surface portion 10A of the box 10. These running rollers 14A and 1
4B is a bearing member 16 whose shafts are fixed in the casing 10.
Supported by a and 16b respectively. Then, at the position sandwiched by the traveling rollers 14A and 14B, the heat-sensitive recording portion 17 forming an image recording portion is provided along the rear surface portion 10D of the casing 10 and the lower end portion 17a thereof is formed as a recording portion opening portion. 11 to 1
It is arranged so as to be projected outside the bottom surface portion 10A of 0. This thermal recording section 17 is the same as that shown in FIG. 1 described above, and has a thermal head disposed in the lower end 17a, and its end face is brought into contact with the surface of the recording paper 21. Thermal recording.

Further, at the position sandwiched by the traveling rollers 14A and 14B in the casing 10, an image reading window 41 formed on the bottom surface portion 10A.
The Selfoc lens part 43 is arranged above the
Further, a CCD line image sensor 44 forming an image reading unit is installed above it. Image reading window
A light source 45 is also arranged above 41, and the CCD line image sensor 44 transmits the light from the image that is exposed to the image reading window 41 under the illumination of the light source 45 through the SELFOC lens portion 43. The image signal is sequentially received as a line image, and image signals corresponding to the read line image are sequentially generated.

Further, in the box 10, an image signal transmitting section having a memory for accumulating an image signal obtained from the CCD line image sensor 44 and a control block 46 having a control circuit section are installed. This control block 46 is a box
It is fixed to the inner surface of the top plate portion 10B and the side surface portion 10E of 10,
Mechanically, the bearing members 16a and 16b, the thermal recording unit 17, the SELFOC lens unit 43, and the CCD line image sensor 44 are used.
Plays a role in supporting such things as.

The image signal sending unit built in the control block 46 is CC
The image signal corresponding to the line image sequentially obtained from the D line image sensor 44 is stored in the memory, and thereafter,
The image signals stored in the memory are sequentially read out, for example, for each one line image and sent to the thermal recording unit 17 forming the image recording unit. Similarly, the control circuit section incorporated in the control block 46 includes a rotary encoder 20 provided in association with the image signal sending section, the thermal recording section 17, the mode selection switch 42, the CCD line image sensor 44 and the traveling roller 14A. Of the CCD line image sensor 44 and the image signal sending unit, based on the timing pulse signal obtained from the rotary encoder 20, the image signal is obtained by the CCD line image sensor 44 and the image signal is obtained. CCD line image sensor 4 and the operation to store in the memory of the sending unit
The operation of sequentially sending the image signals corresponding to the line image from the memory in which the image signals from 4 are stored to the thermal recording unit 17, and the recording paper according to the image signal from the image signal sending unit in the thermal recording unit 17. Controls the operation of recording an image on 21.

The rotary encoder 20 is the same as that shown in FIG. 1 described above, and a timing pulse signal corresponding to the rotation of the traveling roller 14A is obtained.

G-5 Image Reading / Recording Operation (FIGS. 4 and 5) Another example of the portable printing apparatus according to the present invention, which has the above-described configuration, reads an image on a document surface, When the read image is used for recording on a recording sheet, the mode selection switch 42 is first operated to enter the image reading operation mode state. An image reading window 41 provided on the bottom surface 10A of the box 10
Are made to face the document surface 47, and the bottom portions 10A of the casing 10 are inserted from the roller openings 12a and 12b of the traveling rollers 14A and 14B, respectively.
The box 10 is moved on the document surface 47 while the portion protruding outward is brought into contact with the document surface 47. As a result, the traveling rollers 14A and 14B rotate while being in contact with the document surface 47.

At this time, the disk 20a of the rotary encoder 20 rotates with the rotation of the traveling roller 14A, and a timing pulse signal corresponding to the moving speed of the envelope body 10 on the document surface 47 is obtained from the rotary encoder 20, which is a control block. It is supplied to the control circuit unit built in 46. Then, the control circuit section controls the operation of the image signal sending section built in the CCD line image sensor 44 and the control block 46 based on the timing pulse signal from the rotary encoder 20.

When the box 10 is moved on the document surface 47 in this manner, the image on the document surface 47 that appears in the image reading window 41 under the illumination of the light source 45 is transmitted through the SELFOC lens portion 43. Is read by the CCD line image sensor 44. Then, under the operation control based on the timing pulse signal from the rotary encoder 20 by the control circuit unit built in the control block 46, an image signal corresponding to the line image read from the CCD line image sensor 44 is generated. The image signals are sequentially sent to the image signal sending section. Then, in the image signal sending unit, an image signal corresponding to each line image sequentially supplied from the CCD line image sensor 44 under the operation control based on the timing pulse signal from the rotary encoder 20 by the control circuit unit. Are sequentially captured and stored in the memory.

Next, the mode selection switch 42 is operated to enter the image recording operation mode state, and the end surface of the lower end portion 17a of the heat-sensitive recording portion 17 protruding from the recording portion opening 11 to the outside of the bottom surface portion 10A of the casing 10 is recording paper. 21 to face the surface of the traveling roller 14A and 14B from the roller openings 12a and 12b, respectively.
The box 10 is moved on the surface of the recording paper 21 while the portion of the bottom portion 10A of the bottom portion 10A which is projected outside is brought into contact with the surface of the recording paper 21. As a result, the traveling rollers 14A and 14B move the recording paper 21
Rotate while touching the surface of.

At this time, the timing pulse signal obtained from the rotary encoder 20 in accordance with the rotation of the traveling roller 14A is supplied to the control circuit unit incorporated in the control block 46. Then, the control circuit section controls the operation of the image signal sending section and the thermal recording section 17 provided in the control block 46 based on the timing pulse signal from the rotary encoder 20.

An image signal from the CCD line image sensor 44 is stored in the image signal sending unit under the operation control based on the timing pulse signal from the rotary encoder 20 by the control circuit unit built in the control block 46. The image signals are sequentially read from the memory for one line image, and the read image signals are sequentially sent to the thermal recording unit 17. Then, in the thermal recording unit 17, under the control of the operation based on the timing pulse signal from the rotary encoder 20 by the control circuit unit, the image signal is sequentially supplied to the image signals corresponding to one line image from the image signal sending unit. In response to this, the thermal head arranged in the lower end portion 17a is operated to sequentially record the line image on the recording paper 21 by thermal recording.

In this way, under the image reading operation mode,
As the casing 10 moves on the document surface 47, an image signal indicating the image of the portion of the document surface 47 that has passed through the image reading window 41 is accumulated in the memory of the image signal sending unit, and the image recording operation is performed. Under the mode, with the movement of the box 10 on the recording paper 21, the image read out from the memory of the image signal sending portion in the portion of the recording paper 21 where the lower end portion 17a of the thermal recording portion 17 has passed. An image based on the signal is recorded.

G-6 Configuration and Operation of Circuit System in Second Embodiment (FIGS. 6 and 7) The thermal recording unit 17, CCD line image sensor 44, which performs the operation for reading and recording an image as described above. Control block 4 with built-in image signal transmitter and control circuit
The configuration of the circuit system in the portion including 6 and the rotary encoder 20 is as shown in FIG. 6, for example. In this example, an image signal sending unit 52 is provided, which has a memory 50 and a memory control signal generating unit 51 that generates a control signal for writing and reading an image signal with respect to the memory 50. Also,
The thermal recording unit 17 is similar to that shown in FIG. 2 described above, and the image signal is supplied from the image signal sending unit 52.

The control circuit section 36 incorporated in the control block 46 is connected to the output end of the rotary encoder 20.
In, the timing pulse signal from the rotary encoder 20 is supplied to the mode selection switch 42 through the switch 37. The mode selection switch 42 has its movable contact connected to the selection contact R when the image reading operation mode is selected, and has the movable contact connected to the selection contact P when the image recording operation mode is selected. To be done. The selection contact R is connected to the sensor drive signal generator 53, and is also connected to the memory control signal generator 51 of the image signal transmitter 52 via the OR circuit 54. The selection contact P is the recorder. It is connected to the drive signal generator 38 and also connected to the memory control signal generator 51 of the image signal transmitter 52 via the OR circuit 54. Further, a timing pulse signal from the rotary encoder 20 is supplied, and an output signal from the memory control signal generation unit 51 or an output signal from the recording unit drive signal generation unit 38 is supplied via the OR circuit 55, and they are supplied to them. A switch control unit 39 that controls the switch 37 based on the above is provided.

The sensor drive signal generator 53 is a CCD line image sensor 4
Various control signals are supplied to 4, and the recording section drive signal generating section 38 is the same as that shown in FIG.

With such a configuration, when the operation in the image reading operation mode state is performed, the movable contact of the mode selection switch 42 is connected to the selection contact R. Then, from the rotary encoder 20, for example, as shown in FIG.
A timing pulse signal REW corresponding to the moving speed of the document surface 47 of 10 is obtained, which is supplied to the sensor drive signal generation unit 53 via the switch 37 and the mode selection switch 42, and also to the memory via the OR circuit 54. It is supplied to the control signal generator 51.

From the sensor drive signal generator 53 to which the timing pulse signal REW is supplied, for example, as shown in FIG. 7B,
Under the condition that the timing pulse signal REW arrives at a predetermined interval or more, a shift pulse signal SH having a leading edge at the trailing edge of the timing pulse signal REW, as shown in FIGS. 7C and D, Two-phase transfer clock pulse signals CL1 and CL2 having a predetermined number of pulses generated from the trailing edge of the pulse signal SH and transfer clock pulse signals CL1 and CL2 as shown in FIG. 7E, respectively. The reset pulse signal RS generated within the pulse width is sent out and supplied to the CCD line image sensor 44. As a result, in the CCD line image sensor 44, the charge accumulated according to the line image read from the document surface 47 in the light receiving portion is read by the transfer portion by the shift pulse signal SH, and is read by the transfer portion. The charges are transferred to the output section by the transfer clock pulse signals CL1 and CL2. Then, in this example, the transfer clock pulse signal CL1
Is applied, and the output signal is sequentially taken out at the output section during the period from the trailing edge of the transfer clock pulse signal CL1 to the leading edge of the reset pulse RS thereafter. As a result, an image signal OI corresponding to the read line image as shown in FIG. 7F is obtained from the output section. The image signal OI corresponding to one line image is obtained at each arrival of each timing pulse signal REW under the condition that the timing pulse signal REW arrives at a predetermined interval or more, and the image signal sending unit 52 outputs the image signal OI. Are sequentially supplied to the memory 50.

On the other hand, at this time, under the condition that the timing pulse signal REW arrives from the memory control signal generator 51 to which the timing pulse signal REW is supplied at a predetermined interval or longer, as shown in FIG. 7G, for example. Then, the addressing signal ADS is supplied to the memory 50 in response to each timing pulse signal REW, and as shown in FIG. , And a write instruction signal that keeps that state for a predetermined period ▲
▼ is supplied to the memory 50. As a result, the memory 50 is written in each of the periods when the write instruction signal ▲ ▼ is at a low level.
The image signal OI corresponding to one line image from the CCD line image sensor 44 is sequentially written at the address position designated by the address designation signal ADS at that time.

In this way, the memory in the image signal sending unit 52 is
When the image signal OI is written and accumulated in 50,
The switch controller 39 receives the timing pulse signal REW from the rotary encoder 20 and the write instruction signal ▲ ▼ supplied from the memory control signal generator 51 through the OR circuit 55, and receives the trailing edge of the timing pulse signal REW. The switch control signal CSW as shown in FIG. 7I, which takes the low level from the time point of the time point from the time point from the time point until the write instruction signal ▲ ▼ changes from the low level to the high level, is supplied to the switch 37, and the switch control signal Switch 37 during the low period of CSW
Is kept off, and the switch 37 is turned on during other periods. Therefore, the timing pulse signal REW from the rotary encoder 20 is turned on to the sensor drive signal generation unit 53 through the switch 37, and further, the OR circuit
After being supplied to the memory control signal generation unit 51 via 54, the switch 37 is turned off during the period from the low level to the high level of the write instruction signal ▲ ▼, during which the rotary encoder Even if the timing pulse signal REW is sent from 20, the timing pulse signal REW is not supplied to the sensor drive signal generator 53 and the memory control signal generator 51. As a result, an undesired timing pulse signal is output from the rotary encoder 20.
Even if RE is sent, this prevents the image signal OI written in the memory 50 from being damaged.

Writing of the image signal OI to the memory 50 is performed by the case 10
Is moved on the document surface 47, and continues while the image is read from the document surface 47.

After that, when the operation in the image recording operation mode state is performed, the movable contact of the mode selection switch 42 is connected to the selection contact P. Then, from the rotary encoder 20,
For example, the recording paper 21 of the box 10 as shown in FIG. 7J.
Pulse signal according to the moving speed on the plane
RER is obtained, and this is supplied to the memory control signal generator 51 through the switch 37 and the mode selection switch 42, and further via the OR circuit 54.
It is directly supplied from 42 to the recording section drive signal generating section 38.

From the memory control signal generator 51 to which the timing pulse signal RER is supplied, for example, as shown in FIG. 7K,
The addressing signal ADS is supplied to the memory 50 in response to each timing pulse signal RER under the condition that the timing pulse signal RER arrives at a predetermined interval or more.
As shown in FIG. 7L, the timing pulse signal RER
After that, the read instruction signal ▲ ▼, which takes a low level after the time of the trailing edge and keeps that state for a predetermined period, is stored in the memory.
Supplied to 50. As a result, during each period when the read instruction signal ▲ ▼ is at a low level, the image signal MO corresponding to one line image from the address position designated by the address designation signal ADS at that time in the memory 50,
The thermal recording section 17 is read out as shown in FIG. 7M.
Are sequentially sent to.

At this time, the recording section drive signal generator 38 outputs a timing pulse signal as shown in FIG. 7N, for example.
A clock pulse signal CP having a predetermined number of pulses obtained on the basis of RER, a latch pulse signal LT having a leading edge at the trailing edge of the last one of the clock pulse signals CP, as shown in FIG. 7O, and , As shown in FIG. 7P,
At the time of the trailing edge of the latch pulse signal LT, a print pulse signal PT having a leading edge is sent out, the clock pulse signal CP is sent to the line memory 32 of the thermal recording unit 17, and the latch pulse signal LT is sent to the line memory 32 and the line memory 32. The print pulse signal PT is supplied to the line memory 33 and the head drive unit 34.

As a result, in the thermal recording unit 17, first, the memory 50
Image signal MO corresponding to the first one-line image from
Are sequentially taken into the line memory 32 in response to the clock pulse signal CP, and then transferred to the line memory 33 and latched by the latch pulse signal LT. Then, in response to the print pulse signal PT, the image signal MO latched in the line memory 33 is supplied to the head drive unit 34, and the head drive unit 34 drives the thermal head 35 based on the image signal MO, thereby recording paper. A line image is recorded for 21.

The recording of the line image on the recording paper 21 thus performed is completed within the period of the pulse width of the print pulse signal PT. Then, the timing pulse signal RER from the rotary encoder 20 that arrives after the trailing edge of the print pulse signal PT is supplied to the recording unit drive signal generation unit 38 via the switch 37, and the next timing signal from the image signal transmission unit 52. The image signal MO corresponding to one line image is sequentially fetched into the line memory 32 in response to the clock pulse signal CP, and the operation is performed again as described above to record the next line image on the recording paper 21.

When the image recording operation is performed in the thermal recording unit 17 in synchronism with the operation of transmitting the image signal MO from the memory 50 in the image signal transmitting unit 52, the switch control unit 39 controls the timing pulse signal RER from the rotary encoder 20. Receiving the print pulse signal PT supplied from the recording unit drive signal generation unit 38 via the OR circuit 55, the low level from the trailing edge of the timing pulse signal RER to the trailing edge of the subsequent print pulse signal PT. Take the 7th
The switch control signal CSR as shown in FIG. Q is supplied to the switch 37, the switch 37 is kept in the OFF state while the switch control signal CSR is at a low level, and the switch 37 is kept in the ON state in other periods. . Therefore, after the timing pulse signal RER from the rotary encoder 20 is supplied to the memory control signal generation unit 51 and the recording unit drive signal generation unit 38 through the switch 37 in the ON state, the trailing edge of the print pulse signal PT Until the time point, the switch 37 is turned off, and the rotary encoder 20
Even if the timing pulse signal RER is transmitted from the above, the timing pulse signal RER is not supplied to the memory control signal generation unit 51 and the recording unit drive signal generation unit 38. As a result, even if the rotary encoder 20 outputs an undesired timing pulse signal RE, the image recorded on the recording paper 21 by the thermal recording unit 17 is prevented from being damaged thereby.

Then, as described above, the recording operation in the thermal recording unit 17 is
This is repeated until the reading of the image signal MO from the memory 50 in the image signal sending unit 52 is completed, and as a result, an image based on the image signal stored in the memory 50 is recorded on the recording paper 21.

G-7 Modified Example In the example shown in FIG. 1 described above, the control block 19
The image signal sending unit 31 provided inside is a card memory.
18 is supposed to be installed, and the installed card memory 18
Although the image signal is read out from the device and sent to the thermal recording unit 17, the image signal sending unit 31 in the example shown in FIG. 1 is not limited to this.
For example, it may be one that reads an image signal from an external memory other than the card memory 18 and sends it to the thermal recording unit 17, or one that is supplied with an image signal from the outside and sends that image signal to the thermal recording unit 17. May be.

Further, in any of the above examples, the image recording unit for recording an image on the recording paper 21 is formed by the thermal recording unit 17, but the image recording unit in the portable printing apparatus according to the present invention is the thermal recording unit. The heat-sensitive recording section may be replaced by, for example, an inkjet recording unit or a dot recording unit.

H Effect of the Invention As is apparent from the above description, in the portable printing device according to the present invention, for example, the portable printing device is built in by being manually moved on the recording paper surface, or
An image is recorded on the recording paper based on the image signal read from the mounted memory or the image signal supplied from the outside. Then, when it is moved on the recording paper surface, the running roller rotates in a state of being in contact with the recording paper surface or the surface on which the recording paper is arranged, and based on the timing signal obtained according to the rotation, the image is Data is recorded on the portion of the recording paper surface where the device has moved at a timing according to the moving speed of the device on the recording paper surface. In addition, at this time, even if the timing signal obtained according to the rotation of the traveling roller is emitted at an undesired timing, it is possible to avoid damaging the image recorded on the recording paper surface.

Therefore, according to the portable printing apparatus according to the present invention, for example, a desired image can be surely placed at an arbitrary position on an arbitrary recording paper surface by a simple operation of moving the entire apparatus on the recording paper surface with one hand, and , Can be recorded clearly.

[Brief description of drawings]

1 is a partially cutaway perspective view showing an example of a portable printing apparatus according to the present invention, FIG. 2 is a block diagram showing an example of a circuit system in the example shown in FIG. 1, and FIG. 3 is FIG. FIG. 4 is a waveform diagram for explaining the operation of the circuit system shown in FIG. 4, FIG. 4 and FIG. 5 are partially cutaway perspective views and cross-sectional views taken along line VV showing another example of the portable printing device according to the present invention. FIG. 6 is a block diagram showing an example of the circuit system in the example shown in FIGS. 4 and 5, and FIG. 7 is a waveform diagram used for explaining the operation of the circuit system shown in FIG. In the figure, 10 is a box, 14A and 14B are running rollers, 17 is a thermal recording unit, 19 and 46 are control blocks, 20 is a rotary encoder, 31 and 52 are image signal sending units, 36 is a control circuit unit,
37 is a switch, 38 is a recording section drive signal generating section, 39 is a switch control section, and 44 is a CCD line image sensor.

Claims (1)

[Claims] 1. An image signal sending section for sending an image signal read out from a memory or an image signal supplied from the outside, and sent to the recording sheet from the image signal sending section in contact with the recording sheet. Image recording unit for recording an image based on the image signal, a running roller which is rotated in contact with a recording paper surface or a surface on which the recording paper is arranged, and a timing signal generation which obtains a timing signal according to the rotation of the running roller Section, a drive signal generating section that supplies a drive signal for operating the image recording section to the image recording section, and a timing signal from the timing signal generating section in the period in which the timing signal is set according to the drive signal. A timing signal supply control unit for supplying the signal transmission unit and the drive signal generation unit, A portable printing apparatus comprising: an operation control means for controlling the transmission of the image signal in the image signal transmission section and the recording of the image in the image recording section on the recording sheet based on the above.