JP2529161Y2 - Manual scanning printer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application field] The present invention relates to a manual scanning type printing apparatus.

[Conventional technology]

2. Description of the Related Art Recently, a hand-held manual scanning printing apparatus has been developed in which the apparatus main body is manually moved by scanning to print on an external recording sheet.

This manual scanning type printing apparatus is configured such that a main paper contacting with the recording paper and being rotated by movement of the apparatus main body is provided at a lower end portion of a printing apparatus main body having a hand-held size which is manually scanned and moved on an external recording paper. A roller and an auxiliary paper contact roller are provided in front of and behind the moving direction of the apparatus main body, and printing is performed on the recording paper via a thermal transfer ink tape between the main paper contact roller and the auxiliary paper contact roller. A thermal print head is provided, and an encoder which is driven by the rotation of the main paper contact roller and detects an amount of movement of the apparatus main body is provided in the apparatus main body, and printing provided at a lower end portion in the apparatus main body is provided. When the head and the paper contact roller are brought into contact with the recording paper (the print head comes into contact with the recording paper via the ink tape), and in this state, the apparatus main body is manually scanned and moved along the recording paper surface. Timing signal corresponding to the amount of movement of the apparatus body from the encoder with the rotation of the contact roller is outputted, the print head in synchronism with 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, in the conventional manual scanning type printing apparatus, since the above-mentioned encoder is driven only by the rotation of the main paper contact roller, when printing near the end of a thick recording paper such as a notebook, the apparatus is used. There has been a problem that the amount of movement of the main body cannot be correctly detected by the encoder, and the printing is disturbed. This is because when the apparatus main body is moved to near the end of the recording paper, the main paper contact roller provided in the front of the apparatus main body in the moving direction is detached from the recording paper, and the thickness of the notebook or the like is reduced. When printing is performed on recording paper with a gap, when the main paper contact roller comes off the recording paper, the main paper contact roller rises to stop rotation or generate uneven rotation. The detection value of the encoder driven by the rotation of the paper roller does not correspond to the actual movement amount of the apparatus main body, so that the print head cannot be driven in synchronization with the movement amount of the apparatus main body, and the print character Will be disturbed.

This invention has been made in view of the above-mentioned circumstances, and the purpose is to correctly detect the moving amount of the apparatus main body with an encoder even when the main paper contact roller comes off the recording paper. An object of the present invention is to provide a manual scanning type printing apparatus capable of performing correct printing without character distortion or the like.

[Means to solve the problem]

The present invention is directed to a main paper contact roller and an auxiliary paper contact roller which are provided in front and rear in the moving direction of the apparatus main body and rotate by the movement of the apparatus main body in contact with an external recording paper; A print head provided between the roller and a roller for detecting the amount of movement of the apparatus main body from rotation of the main paper contact roller; A mechanism for transmitting the rotation of a paper roller to the encoder as its driving force is provided.

[Action]

In other words, the manual scanning type printing apparatus of the present invention has a mechanism for transmitting the rotation of the auxiliary paper contact roller to the encoder as its driving force in the apparatus main body, thereby reducing the movement amount of the apparatus main body from the rotation of the main paper contact roller. The encoder to be detected is driven not only by the rotation of the main paper contact roller but also by the rotation of the auxiliary paper contact roller. According to this manual scanning type printing apparatus, even if the main paper contact roller comes off from the recording paper, Since the auxiliary paper contact roller on the side opposite to the main paper supply roller with the print head interposed therebetween is in contact with the recording paper, the encoder can be driven by the rotation of the auxiliary paper supply roller. Even when the roller comes off the recording paper, it is possible to correctly detect the amount of movement of the apparatus main body by the encoder and perform correct printing without character distortion or the like.

〔Example〕

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

The manual scanning type printing apparatus of this embodiment has the appearance as shown in FIGS. 3 and 4, and FIG.
FIG. 4 shows a printing state. This manual scanning type printing apparatus has a function as a word processor (hereinafter abbreviated as word processor). In FIGS. 3 and 4, reference numeral 1 denotes 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 key input unit 3 includes a number of character input keys 3
a, 3a are arranged vertically and horizontally, and on one side are various control keys 3b, 3b such as a conversion character designation key, a conversion execution key, a print information selection key, a print repeat key, and a further upper side. Homophonetic kanji selection keys 3c, 3c are arranged.

The configuration of the manual scanning type printing apparatus will be described. The printing apparatus is composed of a front block A and a rear block B which constitute the apparatus main body 1 and a center block C provided in the apparatus main body 1 and shown in FIG. Has become.

First, the front block A will be described. As shown in FIG. 7, the front block A is provided with the display unit 2 and the key input unit 3 on a front case 1a constituting the front surface of the apparatus main body 1. The display unit 2 has a display window 4 formed on the front surface of the front case 1a, and a liquid crystal display panel 5 arranged in the front case 1a so as to face the display window 4. In FIG. 7, reference numeral 6 denotes 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. 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 movable contact sheet surface on the surface facing the fixed contact sheet 8 in a matrix. The contact sheet 9 also has a main circuit board 6 at a flexible connector portion 9a extending to one side thereof.
It is connected to the. Note that this flexible connector
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. 5), and 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
12 is to bulge a portion corresponding to each movable key contact on the surface of the movable contact sheet 9 to the front side, and to make each of the keys 3a, 3b, 3c
The key button portions 13, 13 (see FIG. 5) are formed, and a projection 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, 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 posts 15, 15 provided in a 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, as shown in FIG. 8, the rear block B is one in which a power supply secondary battery 20 and a power supply circuit board 21 are housed in a rear case 1b constituting the back of the apparatus main body 1, and the rear case 1b is The power supply circuit board 21 is fixed to the inner surface of the rear case by bonding or screwing, and the secondary battery 20 is arranged side by side with the power supply circuit board 21 in the rear case 1b. Located on the side. As shown in FIG. 5, the rechargeable battery 20 has a pair of battery connection springs 22a, 22b provided at both ends in a 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. 9, reference numeral 26 denotes a chassis made of a resin molded product. One surface of the chassis 26 is inserted from the upper edge to the center of the chassis 26 through the memory card insertion slot 16 provided on the upper surface of the front case 1a. A memory card storage 27 for storing a memory card 90 (see FIG. 4) is formed. Reference numeral 27a denotes card guide rails formed on both sides of the memory card housing 27. In FIG. 9, reference numeral 28 denotes a chassis 26.
An auxiliary circuit board that is overlaid so as to cover the memory card accommodating section 27 and is adhered or screwed to the chassis 26. The auxiliary circuit board 28 includes a memory card that enters the inner part of the memory card accommodating section 27. 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 end of each of 9a and 29a is connected to an 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. The ninth
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.

1 and 2 show the printing unit 32. In the drawings, reference numeral 33 denotes 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 rotate by the scanning movement of the apparatus main body 1 in contact with the recording paper surface.
Are roller mounting portions 37, 3 formed on both sides of the lower end of the base 33.
8 is rotatably supported. The main paper contact roller 35
Is provided on the front side in the scanning movement direction of the apparatus main body 1 during printing, and the auxiliary paper contact roller 36 is provided on the rear side in the movement direction. An encoder 39 detects the amount of movement of the apparatus main body 1 from the rotation of the main paper contact roller 35. The encoder 39 includes a rotating disk 41 rotatably supported by a support shaft 40 suspended from a base 33, and a rotation amount detector 42 for detecting a rotation amount of the rotating disk 41. The rotating disk 41 has a large number of slits 41a around its entire circumference.
41 are provided at regular intervals. The rotation amount detector 42 has a U-shape in which the outer peripheral portion of the rotating disk 41 is held from both sides, and the rotation amount detector 42 includes a light emitting element such as a light emitting diode and a light emitting element such as a phototransistor. (Both not shown) are provided so as to face each other with the rotating disk 41 interposed therebetween. 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 a main paper contact roller.
The first intermediate gear 43 is rotated by the rotation of the first intermediate gear 43 and the second intermediate gear 44 through a first intermediate gear 43 and a second intermediate gear 44. The intermediate gear 44 is meshed with a passive gear 46 fixed to the rotating disk 41 and the first intermediate gear 43. That is, the encoder 39
Is a rotating disk rotated by the rotation of the main paper contact roller 35
The amount of rotation of 41, that is, the amount of scanning movement of the apparatus main body 1 is detected by the amount of rotation detector 42. The amount of rotation detector 42 allows light from the light emitting element to pass through the slit 41a of the rotating disk 41 to the light receiving element. A pulse signal is output when light is received. In FIGS. 1 and 2, reference numeral 47 denotes an ink for rotating the take-up spool 87 of the ink tape cassette 84 shown in FIG. 10 which is supported by the tape cassette support base 34 and loaded into the apparatus main body 1. It is a tape winding shaft.
The ink tape take-up shaft 47 includes a support shaft 48 suspended from the base 33.
A spool engagement piece 50 is fitted and fixed to the upper end of a hollow rotary shaft 49 rotatably fitted to the winding shaft drive gear 51 rotatably fitted to the rotary shaft 49. The take-up 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 49a provided at the base end thereof and the winding shaft drive gear 5
The rotation plate 54 and the washer 55 are rotatably fitted between the take-up shaft drive gear 51 and the spool engagement piece 50 while the friction plate 52 sandwiched therebetween is rotatably fitted. The washer 55, the rotating plate 54, the winding shaft drive gear 51, the friction plate 52, and the flange 49a of the rotating shaft 49 are provided with a coil spring 56 interposed between the spool engaging piece 50 and the washer 55. Are pressed against each other by the spring force of
The ink tape take-up shaft 47 is driven to rotate via first to third intermediate gears 43, 44, 53 and a take-up shaft drive gear 51 in conjunction with the rotation of the main paper contact roller 35. The rotation of the take-up shaft drive gear 51 is performed via the friction plate 52 by the flange 49 of the rotation shaft 49.
a, whereby the rotating shaft 49 is
Rotates with 0. The rotating plate 54 is provided with an arm extending outward. The arm has a leading end when the apparatus main body 1 is moved in a direction opposite to the normal print scanning direction. A reverse rotation preventing gear 57 for preventing the ink tape winding shaft 47 from rotating in the reverse direction is pivotally supported. The reverse rotation preventing gear 57 always meshes with the winding shaft drive gear 51, and rotates in the rotation direction of the winding shaft drive gear 51 in contact with the winding shaft drive gear 51. As a result, the take-up shaft drive gear 51 is displaced in the circumferential direction. The operation of preventing the reverse rotation of the ink tape take-up shaft 47 by the reverse rotation preventing gear 57 will be described. When the apparatus main body 1 is moved in the normal print scanning direction (the direction of the dashed line arrow in FIG. 2), the recording paper is contacted. Since the main paper contact roller 35 rotating in the direction of the arrow rotates the intermediate gears 43, 44, 53 and the winding shaft drive gear 51 in the direction of the arrow, the ink tape winding shaft 47 is It is rotated in the 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. Grease is applied to the contact surface between the rotating plate 54 and the washer 55, so that the ink tape winding shaft 47 also slides between the rotating plate 54 and the washer 55 to drive the winding shaft. It rotates with the gear 51. on the other hand,
If 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 that is in contact with the recording paper rotates in the direction opposite to the arrow direction, and ,Four
4, 53 and the take-up shaft drive gear 51 rotate in the direction opposite to the arrow direction, so that the ink tape take-up shaft 47 is rotated in the direction opposite to the ink tape take-up direction. The rotation plate 54 is rotated in the direction of the dashed arrow by the reverse rotation of the shaft drive gear 51, and the reverse rotation prevention gear 57 meshed with the winding shaft drive gear 51 also meshes with the third intermediate gear 53. Is prevented, the reverse rotation of the ink tape winding shaft 47 is prevented, and at the same time, the rotation of the rotating disk 41 of the encoder 39 is also prevented. At this time, the main paper contact roller 35 slides on the recording paper without rotating.

1 and 2, 35a and 36a are pulleys fixed to the roller shafts of the main paper contact roller 35 and the auxiliary paper contact roller 36, respectively.
A rotation transmission belt a is wound around 36a. The pulleys 35a and 36a are connected to the main paper contact roller 35 and the auxiliary paper contact roller 3 respectively.
The rotation transmission belt a is rotated by the scanning movement of the apparatus main body 1 when both the main paper contact roller 35 and the auxiliary paper contact roller 36 contact the recording paper. When both are rotating at the same peripheral speed, the pulleys 35a and 36a are rotating at the same peripheral speed. When the main paper contact roller 35 comes off the recording paper, the rotation transmission belt a contacts the recording paper and rotates the auxiliary paper contact roller 36 that is rotated by the scanning movement of the apparatus main body 1 to rotate the main paper contact roller 35. To rotate the main paper contact roller 35 at the same peripheral speed as the auxiliary paper contact roller 36, thereby transmitting the driving force to the encoder 39 and the ink tape winding shaft 47 via the main paper contact roller 35. Things
Even when the main paper contact roller 35 is detached from the recording paper, the main paper contact roller 35 is in contact with the recording paper via the rotation transmission belt a by the rotation of the auxiliary paper contact roller 36 in the same manner as when it is rotated by the scanning movement of the apparatus main body 1. The rotating disk 41 and the ink tape winding shaft 47 of the encoder 39 driven by the rotation of the main paper contact roller 35 via the intermediate gears 43, 44 and 53 by the rotation of the main paper contact roller 35 cause the main paper contact roller 35 to move on the recording paper. When it is out of the position, it is rotated according to the scanning movement of the apparatus main body 1.

On the other hand, in FIGS. 1 and 2, reference numeral 59 denotes a thermal print head, 60 denotes a print head holder, and the print head holder 60 is fixed to the lower end 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, 63 vertically fixed in a print head holder 60. The print head mounting table 62 is fitted to the guide rods 63, 63 to form a print head. Pressing springs 64, 64 composed of coil springs interposed between the mounting table 62 and the upper end of the print head holder 60, are pressed downward. In addition, print head mount
A bolt passage hole 65 is formed horizontally at the center of the hole 62. The print head 59 is housed in the print head holder 60 with its tip (lower end) protruding below the print head holder 60 from the print head protruding opening 61. The back surface is brought into contact with the print head mounting table 62, and is attached to the print head mounting table 62 via a head support bolt 66 screwed and fixed to the center of the rear surface of the print head 59 through the bolt through hole 65. In FIG. 2, reference numeral 67 denotes a 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. In FIG. 1, reference numeral 68 denotes a print driver circuit board made of a flexible substrate constituting a print driver circuit for driving the print head 59;
This 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 is
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 a front block A with a center block C attached thereto and a 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. 7 to 9).

FIG. 11 shows a circuit of the printing apparatus. The display unit 2 and the key input unit 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 shown. 20 is connected to a power supply circuit 101 formed on a power supply circuit board 21; a print driver circuit 103 formed on a print driver circuit board 68 of the print unit 32 of the center block C; and a memory card connector 29 formed on an auxiliary circuit board. 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 at the lower end of the rear case 1b as shown in FIG.
The printing unit 32 is covered with a removable lid 1c. The lid 1c is formed by inserting elastic hooking claws 77 formed at a plurality of locations on the upper edge portion thereof into holes 78 provided on the lower surface of the rear case 1b, and holding portions 79 on the inner surface of the rear case 1b (FIG. 5). ) So that the lower edge of the lid is flush with the lower edge of the front case 1a, and the lid 1c is detached by pulling the lid 1c downward. Is 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. In FIG. 6, reference numeral 80 denotes a protective cover for protecting the print head 59 and the paper contact rollers 35 and 36 exposed at the lower end surface of the apparatus main body 1 when the printing apparatus does not perform printing. The cover 80 is detachably attached to the apparatus body 1 by hooking elastic hooking pieces 81 formed at both ends thereof, each of which has a claw portion at a tip end thereof, on hooks 82 provided on both side surfaces of a lower end portion of the front case 1a. Can 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 attached to the front surface of the apparatus main body 1 at the time of printing as shown in FIG. 4 and is also used as a delivery member for gripping the apparatus main body 1. By hooking the claw at the tip of the hooking piece 81 in a hooking groove 83 formed on both sides of the front case 1a along the front side of the case, the hook is lifted from the front side of the apparatus 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 select 80 mounting positions arbitrarily,
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 the swelling 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 printing apparatus 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. 1, two tape cassette retaining pieces 34a, 34a each having a retaining claw at the distal end thereof are integrally formed on the side edge of the tape cassette support table 34 so as to protrude. The tape cassette 84 is brought into contact with the tape cassette support base 34 while elastically deforming the hooking pieces 34a, 34a outward, and is hooked 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 the middle member 89 is fitted into the cutout 85a of the ink tape cassette 84 as described above. 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 bulged state even if the middle filling member 89 is removed. When the tape cassette 84 is loaded, the exposed portion of the ink tape 88 does not hit the print head 59, so that the ink tape 88 does not bend or kink when hitting the print head 59.

Next, a method of using the manual scanning type printing apparatus will be described. This manual scanning type printer converts character information input in kana or romaji into character information such as kanji, hiragana, katakana, numbers, symbols, etc., as in a general Japanese word processor. As shown in FIG. 3, 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. The operation is performed in a state where the changeover switch 18 is switched to the W position and the printing apparatus is in the word processing 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
The protective covers 80 are mounted on 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 of the apparatus main body 1 and the back of the apparatus main body 1 to grasp the apparatus main body 1 as shown in FIG. The paper rollers 35 and 36 and the print head 59 are moved 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, the user presses the print start button 19 and then manually scans and moves the apparatus main body 1 in the lateral direction (the direction indicated by the arrow in FIG. 4). When,
With the rotation of the main paper contact roller 35, a pulse signal corresponding to the amount of movement of the apparatus main body 1 is output from the encoder 39, and print information is sequentially read from the memory unit in accordance with the timing pulse, and the print information is printed. The head 59 prints on the recording paper 91 via the ink tape 88, and the take-up spool 87 of the ink tape cassette 84 by the ink tape take-up shaft 47 that rotates in conjunction with the rotation of the main paper contact roller 35.
Is rotated and the ink tape 88 is wound up. FIG. 4 shows a memory card for printing a brush character on the apparatus main body 1.
This shows a state in which the character 90 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.
When the user holds the device body 1, the user holds the device body 1 from above the character input keys 3a, 3a and the control keys 3c, 3c arranged in the key input section 3 on the front surface of the device body.
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.

However, in the manual scanning type printing apparatus, even when the main paper contact roller 35 comes off the recording paper when printing near the end of a thick recording paper such as a notebook, the main contact paper is sandwiched by the print head 59. Auxiliary paper contact roller on the opposite side of paper roller 35
Reference numeral 36 denotes a main paper contact roller 35 which is in contact with the recording paper and is rotated by the scanning movement of the apparatus main body 1 so as to be off the recording paper.
Is rotated by the rotation of the auxiliary paper contact roller 36 in the same manner as when it is rotated by the scanning movement of the apparatus main body 1 in contact with the recording paper via the rotation transmission belt a. Even when the paper 35 comes off the recording paper, the rotating disk 41 of the encoder 39 and the ink tape take-up shaft 47 driven by the rotation of the main paper contact roller 35 via the intermediate gears 43, 44 and 53 move the ink tape winding shaft 47 of the apparatus body 1 It can be driven according to the scanning movement amount. For this reason, according to the manual scanning type printing apparatus, even when the main paper contact roller 35 comes off the recording paper, the moving amount of the apparatus main body 1 is correctly detected by the encoder 39 and synchronized with the scanning movement of the apparatus main body 1. Since the print head 59 can be driven by the printer, it is possible to perform correct printing without disturbing characters, etc.
Since the apparatus can also be driven to rotate in accordance with the scanning movement of the apparatus main body 1, it is possible to reliably feed the ink tape 88 and perform good printing.

In the above embodiment, the encoder 39 is connected to the paper contact roller 35.
The encoder 39 is provided separately from the paper contact roller 35.
The rotation may be directly detected. Further, the mechanism for transmitting the rotation of the auxiliary paper contact roller 36 to the encoder 39 as its driving force is not limited to the above embodiment.For example, when the encoder 39 is driven by a gear mechanism as in the above embodiment, Any of the intermediate gears 43, 44 and 53 or the rotating disk 41 of the encoder 39 and the auxiliary paper contact roller 36 may be connected by a belt drive mechanism or the like. In the above embodiment, the ink tape winding shaft 47 is also driven by the rotation of the paper contact roller, but the ink tape winding shaft 47 may be driven to rotate using a motor. Further, in the above-described embodiment, the manual scanning type printing apparatus having a word processing function has been described. However, the present invention relates to a manual scanning type printing apparatus which is connected to a computer or the like and prints on an external recording paper, or a document reading function. It is needless to say that the present invention can also be applied to a manual scanning type printing apparatus which prints data read from a document on an external recording paper.

[Effect of the invention]

Since the manual scanning type printing apparatus of the present invention has the above-described configuration, even when the main paper contact roller comes off from the recording paper, the movement amount of the apparatus main body is correctly detected by the encoder, and character distortion or the like is detected. No correct printing can be done.

[Brief description of the drawings]

1 and 2 show an exploded perspective view and a front view of a printing unit provided in a printing apparatus main body, and FIGS. 3 and 4 show a non-printing apparatus of the printing apparatus. FIG. 5 is a longitudinal side view of the printing device, FIG. 6 is a perspective view of the printing device with a cover covering the printing unit removed, and FIG.
FIGS. 8, 9 and 9 are exploded perspective views of a front block, a rear block and a center block constituting the printing apparatus, FIG. 10 is a perspective view of an ink tape cassette used in the printing apparatus, and FIG. 11 is printing. FIG. 2 is a block diagram illustrating a circuit configuration of the device. 1. Apparatus body, 35 ... Main paper contact roller, 36 ... Auxiliary paper contact roller, 35a, 36a ... Pulley, a ... Rotation transmission belt, 3
9… Encoder, 42… Rotation detector, 41… Rotating disk, 43,44,53… Intermediate gear, 59… Print head.

Claims (1)

(57) [Scope of request for utility model registration] 1. A manual scanning type printing apparatus for manually scanning and moving an apparatus main body to print on an external recording sheet, wherein said apparatus is provided at a front side and a rear side in a moving direction of the apparatus main body and comes into contact with said recording sheet. A main contact roller and an auxiliary contact roller that are rotated by the movement of the recording medium; a print head that is provided between the main contact roller and the auxiliary contact roller to print on the recording paper; and a rotation of the main contact roller. And an encoder for detecting the amount of movement of the apparatus main body, and a mechanism for transmitting the rotation of the auxiliary paper contact roller to the encoder as a driving force within the apparatus main body. Type printing device.