JP2503506B2 - Manual scanning printer - Google Patents

Description

The present invention relates to a manual scanning type printer.

[Conventional technology]

Recently, a handy type manual scanning type printing apparatus has been developed which manually scans and moves the apparatus body to print on an external recording paper.

This manual scanning type printing device has a thermal printing head that prints on an external recording paper via an ink tape inside a printing device main body that can be held by hand, and rotates by moving the device main body in contact with the recording paper. A paper contact roller, an encoder for detecting the amount of movement of the apparatus main body by the rotation of the paper contact roller, a take-up shaft for the thermal transfer ink tape loaded in the main body of the apparatus, A winding shaft drive mechanism that rotationally drives the winding shaft is provided, and the print head and the paper-contact roller provided at the lower end of the apparatus main body are brought into contact with the recording paper. If the device body is manually scanned and moved along the surface of the recording paper in this state), the timing corresponding to the amount of movement of the device body from the encoder due to the movement, that is, the rotation of the paper contact roller. No. is output, the print head periodically in the timing signal is printed on the recording paper is driven.

In other words, the manual scanning type printing device prints on an external recording paper by manually scanning and moving the printing device itself.This manual scanning type printing device has a small printing width, but uses a platen for printing. Unlike the apparatus, it is possible to print on a thick thing that cannot be wound around a platen such as a notebook, and it is convenient to carry because it is small and lightweight.

[Problems to be solved by the invention]

However, since the conventional manual scanning type printing apparatus is one in which the print head, the paper contact roller, the encoder, the ink tape take-up shaft and the drive mechanism which are the components thereof are individually incorporated in the apparatus main body, When assembling the printing apparatus, it is necessary to adjust the position of each of these components one by one and attach them to the main body case. Therefore, the conventional manual scanning type printing apparatus has a problem that the assembly cannot be performed efficiently.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a manual scanning type printing apparatus excellent in mass productivity, which enables efficient assembly. .

[Means for solving problems]

A first invention of this application is a manual scanning type printing apparatus for manually scanning and moving an apparatus main body to print on an external recording paper, in which a paper contact roller which comes into contact with the recording paper and is rotated by the movement of the apparatus main body. An encoder that detects the amount of movement of the apparatus main body by rotation of the paper contact roller, and a print head that prints on the recording paper via an ink tape,
The ink tape take-up shaft and the take-up shaft drive mechanism that rotationally drives the ink tape take-up shaft in association with the rotation of the paper contact roller are attached to a common base to form a printing unit. Is attached to the apparatus main body.

The second invention of this application is a manual scanning type printing apparatus for manually scanning and moving the apparatus main body to print on an external recording paper, in which a display unit and key input are provided on a front case constituting the front surface of the apparatus main body. A front block provided with a unit, a rear block for accommodating a battery in a rear case forming a back surface of the apparatus main body, a paper contact roller that comes into contact with the recording paper and is rotated by movement of the apparatus main body,
An encoder that detects the amount of movement of the apparatus body by the rotation of the paper contact roller, a print head that prints on the recording paper via an ink tape, an ink tape take-up shaft, and the rotation of the paper contact roller are interlocked. And a printing unit configured by mounting a winding shaft drive mechanism that rotationally drives the ink tape winding shaft on a common base, and the front block and the rear block configure the apparatus main body,
The printing unit is attached to the main body of the apparatus.

[Action]

In the first invention of this application, the components of the paper contact roller, the encoder, the print head, the ink tape take-up shaft, and the drive mechanism thereof are attached to a common base to be integrated as a print unit, and the print unit is incorporated in the apparatus main body. Since they are mounted, the above-mentioned parts can be collectively attached to the apparatus main body, and the assembly efficiency is improved as compared with the conventional manual scanning type printing apparatus in which the positions of the respective parts are individually adjusted and attached to the apparatus main body. .

Further, in the second invention, in the same manner as in the first invention, a device main body composed of a front block having a display section and a key input section provided in a front case and a rear block storing a battery in a rear case is provided. Since the printing unit configured by mounting each of the above parts on a common base is mounted, each of the above parts can be collectively mounted on the main body of the apparatus that has the display section and the key input section and accommodates the battery. hand,
The assembling efficiency is improved as compared with the conventional manual scanning type printer in which the positions of the respective parts are individually adjusted and attached to the apparatus main body.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

The manual scanning type printer of this embodiment has an appearance as shown in FIGS. 1 and 2, and FIG.
FIG. 2 shows a printing state. This manual scanning type printing apparatus has a function as a word processor (hereinafter abbreviated as word processor), and in FIG. 1 and FIG. 2, reference numeral 1 is an apparatus main body having a hand-held size. A display unit 2 and a key input unit 3 are provided on the front surface of the. The key input unit 3 includes a number of character input keys 3
While a and 3a are arranged vertically and horizontally, various control keys 3b and 3b such as an exchange character designation key, a conversion execution key, a print information selection key, and a print repeat key are arranged on one side, and further on the upper part. Homophone and Kanji selection keys 3c, 3c are arranged.

The structure of this manual scanning type printer will be described. This printer is composed of a front block A and a rear block B which form the main body 1 of the apparatus, and a center block C shown in FIG. Has become.

First, the front block A will be described. As shown in FIG. 5, the front block A is a front case 1a constituting the front surface of the apparatus main body 1 provided with the display section 2 and the key input section 3. The display unit 2 is configured by forming a display window 4 on the front surface of the front case 1a, and disposing a liquid crystal display panel 5 inside the front case 1a so as to face the display window 4. Further, in FIG. 5, 6 is a main circuit board provided in the front case 1a. The main circuit board 6 constitutes a main circuit of the printing apparatus, and the liquid crystal display panel 5 is connected to the main circuit board 6 by a heat seal connector 7. 8
Is a fixed contact sheet disposed on the main circuit board 6, 9 is a movable contact sheet facing the fixed contact sheet 8, and the fixed contact sheet 8 and the movable contact sheet 9 are laminated and bonded via a spacer sheet 10. I have. The fixed contact sheet 8 is formed by arranging a large number of fixed key contacts (not shown) on the surface facing the movable contact sheet 9 vertically and horizontally, and the fixed contact sheet 8 is a flexible connector extending and formed on one side thereof. The portion 8a is connected to the main circuit board 6. Further, the movable contact sheet 9 is formed by arranging a large number of movable key contacts (not shown) facing each fixed key contact on the surface of the movable contact sheet vertically and horizontally on the surface facing the fixed contact sheet 8. The contact sheet 9 is also formed on one side of the flexible connector portion 9a so as to extend to the main circuit board 6.
It is connected to the. This flexible connector part
9a is connected to the main circuit board 6 bypassing the outside of the spacer 10 and the fixed contact sheet 8. On the other hand, the spacer sheet 10 has openings 11, 1 at portions corresponding to the key contacts of the fixed contact sheet 8 and the movable contact sheet 9, respectively.
1 (see FIG. 3), the movable contact sheet 9
The movable key contact on the surface contacts the fixed key contact on the surface of the fixed contact sheet 8 in the opening 11 by pressing the movable contact sheet 9. Reference numeral 12 denotes a rubber sheet superimposed on the movable contact sheet 9. This rubber sheet
The reference numeral 12 designates each of the keys 3a, 3b, 3c by bulging a portion corresponding to each movable key contact on the surface of the movable contact sheet 9 to the surface side.
Key button portions 13 and 13 (see FIG. 3) are formed, and a protrusion for pressing the key contact forming portion of the movable contact sheet 9 is formed on the inner surface of the top of each key button portion 13 and 13. . Each of the key buttons 13, 13 protrudes from the front case surface through key openings 14, 14, which are vertically and horizontally arranged on the surface of the front case 1a. This presses the movable contact sheet 9. The main circuit board 6 is provided with post parts 15, 1 provided in the front case 1a as shown in FIG.
The fixed contact sheet 8, the movable contact sheet 9 and the rubber sheet 12 superposed on the movable contact sheet 9 are screwed to the inner surface of the front case 1a and the main circuit board 6 by screws. Sandwiched between
The liquid crystal display panel 5 is also sandwiched between the inner surface of the front case 1a and the main circuit board 6. In addition, a memory card insertion slot 16 and a charging hole 17 are opened on the upper surface of the front case 1a, and a slide mode changeover switch 18 also serving as a power switch is provided on one side of the front case 1a, and the other side is provided. Is provided with a print start button 19 composed of a push switch.

On the other hand, in the rear block B, as shown in FIG. 6, the secondary battery 20 for power supply and the power supply circuit board 21 are housed in the rear case 1b which constitutes the rear surface of the apparatus main body 1. The size is such that the lower end side is shorter than the front case 1a, the power supply circuit board 21 is fixed to the inner surface of the rear case by adhesion or screwing, and the secondary battery 20 is arranged side by side with the power supply circuit board 21 in the rear case 1b. It is located on the side. As shown in FIG. 3, the secondary battery 20 includes a pair of battery connecting springs 22a, 22a, which are provided at both ends in the rear case 1b.
The electrodes at both ends of the battery are sandwiched and fixed in the rear case 1b by a battery spring 22a (in the figure, one is a leaf spring and the other is a coil spring). The battery connection springs 22a and 22b are connected to the power supply circuit board Is connected to Also, power circuit board
A charging adapter 24 for charging the secondary battery 20 is attached to the upper end side of the 21 so as to face the charging hole 16 provided on the upper surface of the front case 1a. Reference numeral 25 denotes a piezoelectric buzzer 25 that emits an alarm sound when the moving speed of the printing device that is manually scanned and moved on the recording paper is too fast. The piezoelectric buzzer 25 is connected to the power supply circuit board 21.

Next, the center block C will be described with reference to FIG. The center block C is housed in the apparatus main body 1 configured by combining the front block A and the rear block B. The center block C has the following configuration. That is, in FIG. 7, reference numeral 26 is a chassis made of a resin molded product, and one surface of the chassis 26 is inserted from the upper end edge to the central portion through the memory card insertion slot 16 provided on the upper surface of the front case 1a. A memory card accommodating portion 27 for accommodating the memory card 90 (see FIG. 2) is formed. Incidentally, 27a is a card guide rail portion formed on both sides of the memory card accommodating portion 27. Further, in FIG. 7, 28 is a chassis 26.
It is an auxiliary circuit board that is superposed on the memory card accommodating portion 27 and adhered or screwed to the chassis 26. The auxiliary circuit board 28 has a memory card that is inserted into the inner depth of the memory card accommodating portion 27. The connector 29 is attached. This memory card connector 29 has a resin base in which a number of contact pins 29a, 29a that are fitted into a number of contact holes (not shown) formed on an end face of the memory card 90 are arranged in a row. Each contact pin 2
The other ends of the 9a and 29a are connected to the auxiliary circuit board 28 as shown in FIG.
And is soldered to the auxiliary circuit board 28. Further, a resin sheet 31 having a small coefficient of friction is adhered to a portion of the auxiliary circuit board 28 facing the inside of the memory card accommodating portion 27, and the memory card 90 is provided with the rail portion 27a of the memory card accommodating portion 27 and the resin The card is inserted into the memory card accommodating portion 27 while being guided on both sides of the card by the sheet 31, and is connected to the memory card connector 29. Also the 7th
In the figure, reference numeral 32 denotes a printing unit attached to the lower end side of the chassis 26. The printing unit 32 has the following configuration.

8 and 9 show the printing unit 32, in which 33 is a base made of a metal plate.
A tape cassette support 34 made of a resin molded product is screwed and fixed to the surface. Reference numerals 35 and 36 denote a main paper contact roller and an auxiliary paper contact roller which come into contact with the recording paper surface and are rotated by the scanning movement of the apparatus main body 1. These both paper contact rollers 35, 36
Are roller mounting portions 37, 3 formed on both sides of the lower end of the base 33.
8 is rotatably supported. Reference numeral 39 is an encoder for detecting the amount of movement of the apparatus main body 1 by the rotation of the main paper-contact roller 35. The encoder 39 is composed of a rotating disc 41 rotatably supported by a support shaft 40 provided vertically on a base 33, and a rotation amount detector 42 for detecting the rotation amount of the rotating disc 41. The rotary disc 41 is provided with a large number of slits 41a, 41 at regular intervals on the outer periphery of the rotary disc 41. Further, the rotation amount detector 42 is a U-shaped one that holds the outer peripheral portion of the rotating disc 41 from both sides thereof, and the rotation amount detector 42 includes a light emitting element such as a light emitting diode and a light receiving element such as a phototransistor. (Not shown) is the rotating disc 41
They are provided so that they face each other. The rotation amount detector 42 is fixed to the base 33, and its lead terminals 42a are connected to the auxiliary circuit board 28. The rotating disk 41 is rotated by the rotation of the main paper-contact roller 35 via the first intermediate gear 43 and the second intermediate gear 44. The first intermediate gear 43 is provided on one end side of the main paper-contact roller 35. The second intermediate gear 44 is meshed with the driving gear 45, and the second intermediate gear 44 is meshed with the passive gear 46 fixed to the rotating disc 41 and the first intermediate gear 43. That is, the encoder 39 detects the rotation amount of the rotating disk 41 rotated by the rotation of the main paper-contact roller 35, that is, the scanning movement amount of the apparatus main body 1 by the rotation amount detector 42, and the rotation amount detector 42. Outputs a pulse signal when the light from the light emitting element passes through the slit 41a of the rotary disc 41 and is received by the light receiving element. Further, in FIGS. 8 and 9, 47 is an ink which is supported by the tape cassette support 34 and is loaded in the apparatus main body 1 to rotate the take-up spool 87 of the ink tape cassette 84 shown in FIG. It is a tape winding shaft. The ink tape take-up shaft 47 is formed by fitting and fixing a spool engaging piece 50 on the upper end of a hollow rotary shaft 49 that is rotatably fitted to a support shaft 48 that is vertically provided on a base 33.
A winding shaft drive gear 51 is rotatably fitted to the rotary shaft 49, and the winding shaft drive gear 51 is meshed with a third intermediate gear 53 meshed with the second intermediate gear 44. . Further, the rotary shaft 49 has a circular flange portion provided at the base end thereof.
A friction plate 52 sandwiched between 49a and the take-up shaft drive gear 51 is rotatably fitted, and a rotary plate 54 and a washer are provided between the take-up shaft drive gear 51 and the spool engagement piece 50.
55 is rotatably fitted, and the washer 55, the rotary plate 54, the take-up shaft drive gear 51, the friction plate 52, and the flange portion 49a of the rotary shaft 49 are disposed between the spool engagement piece 50 and the washer 55. The spring forces of the coil springs 56 interposed between them press and contact each other. The ink tape take-up shaft 47 is interlocked with the rotation of the main paper-contact roller 35, and the first to third intermediate gears 4
The rotation of the winding shaft drive gear 51 is transmitted to the flange portion 49a of the rotation shaft 49 via the friction plate 52, and the rotation of the winding shaft drive gear 51 is transmitted through the friction plate 52. The rotating shaft 49 rotates together with the spool engaging piece 50. An arm portion extending outward is formed on the rotating plate 54. When the apparatus main body 1 is moved in the direction opposite to the normal print scanning direction, the arm portion extends outward. A reverse rotation prevention gear 57 is pivotally supported to prevent the ink tape take-up shaft 47 from being reversely rotated. The reverse rotation prevention gear 57 is always meshed with the winding shaft drive gear 51, and
The rotation plate 54, which comes into contact with the winding shaft drive gear 51 and rotates in the rotation direction of the winding shaft drive gear 51, is displaced in the circumferential direction of the winding shaft drive gear 51. The reverse rotation prevention operation of the ink tape take-up shaft 47 by the reverse rotation prevention gear 57 will be described. When the apparatus main body 1 is moved in the normal print scanning direction (the direction of the chain line arrow in FIG. 8), it contacts the recording paper. Since the main paper-contacting roller 35 that is rotating rotates in the direction of the arrow, the intermediate gears 43, 44, 53 and the winding shaft drive gear 51 rotate in the direction of the arrow.
The ink tape winding shaft 47 is rotated in the ink tape winding direction. In this case, the rotation plate 54 is rotated in the rotation direction of the take-up shaft drive gear 51, is received by the stopper 58 formed on the side surface of the tape cassette support base 34, and is held at this position. The take-up shaft drive gear 51 rotates by causing a slip with the rotation plate 54. Further, since the contact surface between the rotating plate 54 and the washer 55 is coated with grease, the ink tape take-up shaft 47 is attached to the rotating plate 54 and the washer 55.
Sliding also occurs with 55 and rotates with the winding shaft drive gear 51. On the other hand, when the apparatus main body 1 is erroneously moved in the direction opposite to the normal print scanning direction during printing, the main paper-contact roller 35 in contact with the recording paper rotates in the direction opposite to the arrow direction and each intermediate Since the gears 43, 44, 53 and the take-up shaft drive gear 51 rotate in the directions opposite to the arrow directions, respectively, the ink tape take-up shaft 47 is rotated in the direction opposite to the ink tape take-up direction. The reverse rotation of the winding shaft drive gear 51 causes the rotating plate 54 to rotate in the direction of the broken line arrow, and the reverse rotation prevention gear 57 meshing with the winding shaft drive gear 51 causes the reverse rotation prevention gear 57 to rotate.
Since they also mesh with each other, the rotation of the gear system is blocked and the reverse rotation of the ink tape take-up shaft 47 is prevented, and at the same time, the encoder 39
The rotation of the rotating disc 41 is also prevented. At this time, the main paper contact roller 35 slides on the recording paper without rotating.

Further, in FIGS. 8 and 9, 59 is a thermal print head, 60 is a print head holder, and the print head holder 60 is fixed to the lower end side of the base 33 with screws. This print head holder 60 has a print head
It has a box-like shape provided with a print head mounting base 62. This printhead mount 62
Is vertically movably supported by two guide rods 63 and 63 which are vertically fixed in the print head holder 60. The print head mounting base 62 is fitted to the guide rods 63 and 63 and is attached to the print head. It is pressed downward by pressing springs 64, 64 which are coil springs and are interposed between the mount 62 and the upper end of the print head holder 60. In addition, print head mount
A bolt through hole 65 is horizontally formed in the center portion of 62. The print head 59 is housed in the print head holder 60 with its tip (lower end) projecting from the print head projecting opening 61 to below the print head holder 60. The back surface is brought into contact with the print head mount 62, and is attached to the print head mount 62 through a head supporting bolt 66 screwed and fixed to the center of the back surface of the print head 59 through the bolt through hole 65. In FIG. 8, 67 is the print head holder 60.
Is a bolt insertion hole opened on the side surface of the bolt. The head support bolt 66 is rotatably supported by the print head mounting table 62, so that the print head 59 can be rolled around the head support bolt 66.

The printing unit 32 is attached to the chassis 26 by stacking the base 33 on the lower end surface of the chassis 26 and fixing it with screws. Further, in FIG. 9, reference numeral 68 denotes a print driver circuit board formed of a flexible board which constitutes a print driver circuit for driving the print head 59,
The circuit board 68 is overlaid on the back surface of the chassis 26 as shown in FIG. Reference numeral 69 denotes an LSI chip mounted on the circuit board 68. Connector portions 68a, 68b are formed on both ends of the print driver circuit board 68, respectively. The connector portions 68a on the lower end side are formed through slit portions 70, 71 provided on the chassis 26 and the base 33. It is pulled out to the front side of the table 33, and is further inserted into the print head holder 60 through a slit 72 provided on the upper surface of the print head holder 60 and connected to the print head 59. In addition, the connector portion 68b on the upper end side is drawn out from the connector drawing opening 73 provided in the chassis 26 to the front surface side of the chassis 26, and is inserted and connected to the connector 74 provided in the auxiliary circuit board 28.

That is, the center block C includes the main paper contact roller 35.
The print unit 32 in which the auxiliary paper contact roller 36, the encoder 39, the ink tape take-up shaft 47, the gear mechanism for driving them, and the print head 59 are mounted on a common base 33 is supported by the chassis 26, and the chassis 26 An auxiliary circuit board 28 and a print driver circuit board 68 are attached to the sub-circuit. The center block C is housed in the print head front case 1a with the lower side of the paper contact rollers 35 and 36 of the print unit 32 positioned so as to slightly protrude from the lower edge of the front case 1a. The chassis 26 is attached to the front block A by screwing the chassis 26 to the tips of the posts 15 and 15 supporting the module 6.

The apparatus main body 1 is assembled by combining the front block A with the center block C attached and the rear block B and joining the front case 1a and the rear case 1b of both blocks A and B together. The power circuit board 21 of B and the auxiliary circuit board 28 of the center block C are connected to the main circuit board 6 of the front unit A via flexible connectors 75 and 76 (see FIGS. 5 to 7), respectively.

FIG. 11 shows the circuit of the printing device. The display section 2 and the key input section 3 of the front block A are connected to the main circuit 100 formed on the main circuit board 6, and the secondary battery of the rear block B is connected. 20 is connected to the power supply circuit 101 formed on the power supply circuit board 21, the print driver circuit 103 formed on the print driver circuit board 68 of the print unit 32 of the center block C, and the memory card connector 29 are formed on the auxiliary circuit board. Are connected to the main circuit 100. The power supply circuit 101 and the auxiliary circuit 102 are connected to the main circuit 100.

The printing unit 32 of the center block C is exposed on the lower end side of the rear case 1b as shown in FIG.
The printing unit 32 is covered with a removable lid 1c. In this lid 1c, elastic hooking pawls 77 formed at a plurality of upper edge portions thereof are inserted into holes 78 provided in the lower surface of the rear case 1b, and hooking portions 79 (FIG. 3 in FIG. 3) on the inner surface of the rear case 1b. The lid 1c is attached to the apparatus main body 1 so that the lower edge of the lid is flush with the lower edge of the front case 1a, and the lid 1c is removed by pulling it downward. To be done. A transparent window for checking the remaining amount of tape formed on the lid 1c in correspondence with the supply spool 86 of the ink tape cassette 84. Further, in FIG. 4, reference numeral 80 denotes a protective cover for protecting the print head 59 and the paper-contact rollers 35, 36 exposed on the lower end surface of the apparatus main body 1 when the printing apparatus is not printing. The cover 80 is detachably attached to the apparatus main body 1 by hooking elastic hooking pieces 81 having claws formed at both ends thereof on hooking portions 82 provided on both side surfaces of the lower end of the front case 1a. To be In addition,
When the protection cover 80 is attached to the apparatus main body 1, the print head 59 is pushed by the protection cover 80 and is pushed into the inside of the apparatus main body 1 against the spring force of the pressing spring 64. When the protective cover 80 is removed to perform the operation, the spring is protruded toward the lower surface of the apparatus main body 1 by the spring force of the pressing spring 64. The protective cover 80 is also attached to the front surface of the apparatus body 1 as shown in FIG. 2 during printing and is also used as a delivery member for holding the apparatus body 1. By hooking the claws at the tip of the hooking piece 81 into the hooking grooves 83 formed on both side surfaces of the front case 1a along the front surface of the case, a state of being floated from the front surface of the apparatus main body 1, that is, key input It is attached without touching each key of the part 3. In addition, the above-mentioned retaining groove 83 is provided with a protective cover.
In order to be able to arbitrarily select the mounting position of 80,
The key input unit 3 is provided from near the lower edge to near the upper edge.

Next, the ink tape cassette 84 used in the printing apparatus will be described. In FIG. 10, reference numeral 85 denotes a cassette case made of a transparent resin. This cassette case 85
Has a cut-out portion 85a into which the print head holder 60 of the apparatus main body 1 enters, and a tape pull-out slit 85b and a tape pull-in slit 85c. This cassette case 8
Inside 5, a supply-side spool 86 and a take-up-side spool 87 are provided, and the thermal transfer ink tape 88 wound around the supply-side spool 86 is pulled out to the outside from the tape draw-out slit 85b and cuts out. Crossing the open end of 85a, it is drawn into the cassette case 85 from the tape drawing slit 85c and wound around the take-up spool 87. Also, the tenth
In the drawing, reference numeral 89 denotes a removable filling member to be fitted into the cutout portion 85a of the cassette case 85. This filling material
Reference numeral 89 is made of, for example, styrene foam resin or the like, and is sized to fit tightly into the notch 85a, and has an arc-shaped ink tape supporting surface 89a protruding outward from the open end of the notch 85a at the tip. Is formed. This filling member 89
Is the ink tape 88 that crosses the open end of the notch 85a.
It supports the exposed part of bulging outward,
The ink tape cassette 84 is packed in a box and shipped with the middle filling member 89 fitted in the notch 85a of the cassette case 85.

The ink tape cassette 84 is one in which the filling member 89 is removed and the ink tape cassette 84 is loaded into the printer as shown in FIG.
The ink tape cassette 84 is mounted on the tape cassette support 34 of the printing unit 32 with the protective cover 80 and the lid 1c removed from the apparatus main body 1. As shown in FIG. 9, two tape cassette locking pieces 34a, 34a each having a locking claw at the tip end are integrally provided on the side edge portion of the tape cassette support base 34 so as to project integrally. The tape cassette 84 is brought into contact with the tape cassette support 34 while elastically deforming the hooking pieces 34a, 34a outwardly, and is locked and fixed by the hooking pieces 34a, 34a as shown in FIG. Incidentally, each intermediate gear 43, 44, 53 of the printing unit 32 and the rotating disk 41 of the encoder 39,
The rotating plate 54 of the ink tape take-up shaft 47 and the take-up shaft drive gear 51 are both provided at a position lower than the tape cassette support surface of the tape cassette support base 34. The tape is loaded on the tape cassette support table 34 without hitting. Also,
The spool engaging piece 50 of the ink tape take-up shaft 47 of the printing unit 32 fits into and engages with the take-up spool 78 of the ink tape cassette 84, and the print head holder 60 enters into the cutout 85a of the ink tape cassette 84. . In this case, the print head 59 supported by the print head holder 60 is
The ink tape 8 traversing the open end of the cutout 85a of the ink tape cassette 84 because the head tip is pressed by the spring force of 4,64 and the head tip projects below the print head holder 60.
If the exposed portion of 8 is linear, the exposed portion of the ink tape 88 will hit the print head 59, but as described above, the filling member 89 is fitted to the cutout portion 85a of the ink tape cassette 84. If the exposed portion of the ink tape 88 is bulged outward from the tip of the print head 59, the ink tape 88 keeps the bulging state even if the filling member 89 is removed. Since the exposed portion of the ink tape 88 does not hit the print head 59 when the tape cassette 84 is loaded, the ink tape 88 does not hit the print head 59 and is not bent or twisted.

Next, a method of using the above manual scanning type printer will be described. This manual scanning printer converts character information input in kana or roman letters into character information such as kanji, hiragana, katakana, numbers, and symbols, similar to a general Japanese word processor, and converts this character information into the first character information. As shown in FIG. 1, the character information is displayed on the display unit 2, the character information is written in the memory unit, and the character information written in the memory unit is printed on an external recording paper. This is performed with the changeover switch 18 switched to the W position and the printer in the word processor mode. On the other hand, when printing the character information written in the memory section, first, the mode changeover switch 18 is switched to the P position to set the printing apparatus to the printing mode, and at the same time, from the memory card insertion slot 16 to the apparatus main body 1. Insert the memory card 90, remove the protective cover 80 from the lower end of the apparatus body 1, and remove the paper
5,36 and the print head 59 are exposed and the protective cover 80 is attached to the front surface of the apparatus main body 1 as shown in FIG. The memory card 90 has a ROM for designating a print font.
The memory card 90 has a plurality of types. Next, a finger is put on the protective cover 80 attached to the front surface of the apparatus body 1 and the back surface of the apparatus body 1 to grasp the apparatus body 1 as shown in FIG. Set the paper rollers 35 and 36 and the print head 59 to the recording paper 91.
Touch the surface. In this case, the print head 59 rises to the recording paper contact level of the paper contact rollers 35, 36 while compressing the pressing springs 64, 64 by contact with the recording paper 91, and the pressing springs 64, 64
The recording paper 91 is pressed and contacted by the repulsive force of the recording paper 91. After that, after pressing the print start button 19, the apparatus main body 1 may be manually moved in the lateral direction (the direction shown by the arrow in FIG. 2) by scanning, and the apparatus main body 1 may be moved by scanning in this manner. When,
Along with the rotation of the main paper-contact roller 35, the encoder 39 outputs a pulse signal according to the amount of movement of the apparatus main body 1, and the print information is sequentially read from the memory unit according to the timing pulse, and the print information is printed. An ink tape winding shaft that is printed by the head 59 on the recording paper 91 via the ink tape 88 and that rotates in synchronization with the rotation of the main paper-contact roller.
The take-up spool 87 of the ink tape cassette 84 is rotated by 47 and the ink tape 88 is taken up. The second
The figure shows a memory card 90 that prints brush letters on the device body 1.
It shows a state in which is inserted to print a brush character.

When performing this printing, in the printing apparatus, the main paper contact roller 35 provided on one side of the apparatus main body 1 (front side with respect to the scanning movement direction) and the other side of the apparatus main body 1 (rear side with respect to the movement direction). Side), the printing apparatus main body 1 is supported on the recording paper 91 by the auxiliary paper contact roller 36 provided on the
A print head 59 is provided between the print papers 5 and 36, and the print head 59 is brought into pressure contact with the recording paper 91 by the spring force of the press springs 64 and 64. Printing can be performed by contacting the surface of the recording paper 91 via the tape 88, and since the print head 59 is rotatably supported by the print head mounting table 62 of the print head holder 60, scanning can be performed. Even if the apparatus main body 1 is tilted to the front side or the back side during the movement, the print head 59 rolls to the opposite side by the tilt angle of the apparatus main body 1 and always comes into flat contact with the recording paper 91, so that the printed characters are blurred. No. Further, when the apparatus main body 1 is gripped and moved by scanning, the finger is directly put on the front surface of the apparatus main body 1 and the apparatus main body 1 is moved.
Since the user grips the device body 1 from above the character input keys 3a, 3a and the control keys 3c, 3c arranged in the key input unit 3 on the front surface of the device body, the rubber sheet 12
The main body 1 is wobbled or protruded due to the strength of the gripping force, and the main body 1 of the printing apparatus is displaced from the lower end of the main body 1. Since the protective cover 80 is attached to the front of the apparatus main body 1 and the apparatus main body 1 is gripped from above the protective cover 80, the apparatus main body 1 is also firmly pressed from the front side so that the apparatus main body 1 is not shaken. Can be stably gripped.

In the manual scanning printer, however, the main paper-contacting roller 35 and the auxiliary paper-contacting roller 36 which come into contact with the external recording paper 91 and rotate by the movement of the apparatus main body 1, and the rotation of the main paper-contacting roller 35 In conjunction with the rotation of the encoder 39 that detects the movement amount of the apparatus main body 1, the print head 59 that prints on the recording paper 91 via the ink tape 88, the ink tape take-up shaft 47, and the main paper-contact roller 35. Rotating disk of encoder 39 above
41 and a gear drive mechanism for rotating the ink tape take-up shaft 47 are mounted on a common base 33 to form a printing unit 32. Since the printing unit 32 is provided in the apparatus main body 1, a paper contact roller is provided. 35, 36, encoder 39, print head 59,
The ink tape take-up shaft 47, the encoder 39, the drive gear mechanism of the ink tape take-up shaft 47, and other components can be assembled together in the apparatus main body 1.

Moreover, in the above printing apparatus, the front block A in which the display section 2, the key input section 3 and the main circuit board 6 are provided in the front case 1a which constitutes the front surface of the apparatus main body 1
The center block C in which the printing unit 32 and the auxiliary circuit board 28 are attached to the chassis 26, the battery 20 and the power supply circuit board in the rear case 1b forming the rear surface of the apparatus body 1.
Since the printing device is constituted by the rear block B accommodating the housing 21, the center block C is mounted in the main body 1 of the device so that the components of the printing unit 32 (contact roller).
35, 36, encoder 39, print head 59, ink tape take-up shaft 47, gear mechanism, etc.) and the auxiliary circuit board 28 can be assembled together in the apparatus main body 1 as well as the front block A and the center block. By combining B and B, the device main body 1 having the display unit 2 and the key input unit 3 and accommodating the battery 20 and the circuit boards 6 and 21 can be configured.

Therefore, according to the above-mentioned manual scanning type printing apparatus, the assembly efficiency of the printing apparatus is improved as compared with the conventional printing apparatus in which the position of each component is individually adjusted and assembled in the apparatus main body when the printing apparatus is assembled. Therefore, mass productivity can be improved.

In the above embodiment, the circuit board is divided into the main circuit board 6, the auxiliary circuit board 28, and the power supply circuit board 21, but these circuit boards may be a single board. The board may be attached to any of the front block A, the rear block B, and the center block C, or may be incorporated into the apparatus main body 1 as a component separate from the above blocks. In the above embodiment, the main paper contact roller 35
Since the encoder 39 and the ink tape take-up shaft 47 are driven by using only the rotation of, the main paper-contact roller 35 will be pressed when printing is attempted near the edge of a thick recording paper such as a notebook. Encoder 39 when removed from recording paper
Also, the ink tape take-up shaft 47 cannot be driven according to the movement amount of the apparatus main body 1 (when the main paper-contact roller 35 is disengaged from the recording paper, the main paper-contact roller 35 floats and stops rotating. Since the rotation unevenness occurs, the driving speeds of the encoder 39 and the ink tape take-up shaft 47 also fluctuate), but even if the main paper-contact roller 35 comes off the recording paper, the auxiliary paper-contact roller
Since 36 is in contact with the recording paper, this auxiliary paper contact roller 36
By making it possible to drive the encoder 39 and the ink tape take-up shaft 47, the encoder 39 and the ink tape take-up shaft 47 can be moved according to the movement amount of the apparatus main body 1 even when the main contact roller 35 is disengaged from the recording paper. Can be driven. In this way, the encoder 39 and the ink tape take-up shaft
When 47 is also driven by the auxiliary paper contact roller 36, for example, as shown by the chain line in FIG.
35 and the auxiliary paper-contacting roller 36 on the roller shafts of the pulleys 35a,
It suffices that the main contact roller 35 and the auxiliary contact roller 36 be rotated synchronously by fixing 36b and winding the drive belt 92 around the pulleys 35a and 36a. Even if the main paper-contact roller 35 comes off the recording paper, the rotation of the auxiliary paper-contact roller 36 in contact with the recording paper causes the main paper-contact roller 35 to rotate in the same manner as when the main paper-contact roller 35 is in contact with the recording paper. The encoder 39 and the ink tape winding shaft 47 can be driven via the gear mechanism according to the amount of movement of the apparatus main body 1.

Further, in the above embodiment, the encoder 39 is replaced by the paper contact roller 35.
The encoder 39 is provided separately from the paper contact roller 35.
The rotation of the ink tape take-up shaft 47 may be directly detected, and the drive mechanism of the ink tape take-up shaft 47 is not limited to the above embodiment, but may be a belt drive mechanism. Furthermore, the center block C
The chassis 26 may have the same outer shape as the outer shape of the front case 1a, and the front case 1a and the rear case 1b may be sandwiched between the abutting portions in a state where the outer peripheral surface is exposed to the outer peripheral surface of the apparatus body 1. .

〔The invention's effect〕

Since the manual scanning type printer of the present invention has the above-mentioned structure, it can be assembled more efficiently and the mass productivity can be improved as compared with the conventional manual scanning type printer.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIGS. 1 and 2 are external views of the printing apparatus in a non-printing state and a printing state, FIG. 3 is a vertical side view of the printing apparatus, and FIG. FIG. 5 is a perspective view seen from the back side of the printer with the lid covering the printing unit removed, and FIG. 5 is an exploded perspective view of the front block.
FIG. 6 is an exploded perspective view of the rear block, FIG. 7 is an exploded perspective view of the center block, FIGS. 8 and 9 are front and exploded perspective views of a printing unit attached to the center block, and FIG. 10 is printing. FIG. 11 is a perspective view of an ink tape cassette used in the apparatus, and FIG. 11 is a block diagram showing a circuit configuration of the printing apparatus. 1 ... Device main body, A ... Front block, 1a ... Front case, 2 ... Display unit, 3 ... Key input unit, 6 ...
Main circuit board, B …… Rear block, 1b …… Rear case, 20 …… Secondary battery, 21 …… Power supply circuit board, C ……
Center block, 26 …… Chassis, 28 …… Auxiliary circuit board, 32 …… Printing unit, 33 …… Base, 34 …… Tape cassette support stand, 35 …… Main contact roller, 36 …… Auxiliary contact roller , 39 …… Encoder, 43,44,53 …… Intermediate gear, 47…
… Ink tape take-up shaft, 51 …… Take-up shaft drive gear, 59 ……
Print head, 60 …… Print head holder, 84 …… Ink tape cassette, 88 …… Ink tape.

Claims (2)

(57) [Claims] 1. A manual scanning type printing apparatus for manually scanning and moving an apparatus main body to print on an external recording paper, comprising: a paper contact roller which comes into contact with the recording paper and is rotated by the movement of the apparatus main body; An encoder that detects the amount of movement of the apparatus body by rotation of a paper roller, a print head that prints on the recording paper via an ink tape, an ink tape take-up shaft, and the paper contact roller in conjunction with the rotation of the paper contact roller. A manual scanning type printing device characterized in that a printing shaft drive mechanism for rotationally driving an ink tape winding shaft is attached to a common base to form a printing unit, and the printing unit is attached to the main body of the apparatus. 2. A manual scanning type printing apparatus for manually scanning and moving the apparatus body to print on an external recording paper, wherein a front block constituting a front surface of the apparatus body is provided with a display section and a key input section. A rear block for accommodating a battery in a rear case that constitutes the back surface of the apparatus main body; a paper contact roller that comes into contact with the recording paper and is rotated by the movement of the apparatus main body; and the device by the rotation of the paper contact roller. An encoder that detects the amount of movement of the main body, a print head that prints on the recording paper via an ink tape, an ink tape take-up shaft, and the ink tape take-up shaft that rotates in association with the rotation of the paper contact roller. And a printing unit configured to be mounted on a common base together with a winding shaft drive mechanism to be driven. 1. A manual scanning type printing apparatus comprising an apparatus main body and the printing unit attached to the apparatus main body.