JPH04104450U - Head unit device for thermal recording tape printer - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the ease and accuracy of head adjustment of a thermal recording tape printer. [Structure] The bracket 39 is attached to the chassis 21 so as to be adjustable in its longitudinal position. Shafts 24 and 49 are provided on the chassis 21 and the bracket 39, respectively, and a height adjustment screw 51 is attached to one of the shafts 24. These shafts 24, 49 and height adjustment screw 5
1 supports the rotating arm 36 of the head unit 23.
A head mounting plate 38 is attached to the rotating arm 36 so as to be adjustable in the left and right directions, and the thermal head 4 is fixed to the head mounting plate 38. Adjust the tilt of the thermal head 4 by moving the bracket 39 back and forth, adjust the height by rotating the height adjustment screw 51, and move the head mounting plate 38 laterally to adjust the tilt of the thermal head 4 relative to the drive roller. Adjust the position.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a head unit device for a thermal recording tape printer. Yes, especially a head unit device that makes it easier to adjust the installation position of the thermal head. It is related to.

0002

[Conventional technology]

Traditionally, letterin tape allows characters and symbols to be printed on tape and pasted onto drawings, documents, etc. Tape printers that create tapes include tape cartridges containing tape. There is a type in which an ink ribbon cassette and an ink ribbon cassette are attached to perform thermal transfer. This theme A printer uses a drive roller that also serves as a platen and a thermal head to print a sheet with a backing paper. The drive roller presses the tape and the ink ribbon, and the tape and the ink ribbon are pressed together. Printing is performed using a thermal head while the printer is running.

0003 The thermal head is mounted on a rotating arm that is pivotally connected to the chassis, and During printing, the tape cartridge or ink ribbon cassette is constantly in pressure contact with the drive roller. When the seat is attached or detached, it is configured to be separated from the drive roller.

0004

[Problem that the idea aims to solve]

The tape printer mentioned above uses tape and ink between the thermal head and the drive roller. Since printing is performed while running the ribbon, the thermal head and drive roller The heating element of the thermal head is positioned on the tangent line, and the contact pressure on the tangent line is They must be made evenly, and if this adjustment is not done correctly, proper printing results may not be obtained. You will not be able to do so. Conventionally, when making this adjustment, the circuit that supported the thermal head was used. Remove the moving arm from the chassis and attach the thermal head to the rotating arm using a special jig. The installation of the board was adjusted and reassembled to the chassis. Therefore, installation/removal and assembly The work is complicated, and it is difficult to find the optimal adjustment point, making the adjustment work difficult. may have to be repeated. Therefore, we removed the thermal head from the chassis. The head can be adjusted without removing it, improving work efficiency and allowing accurate fine adjustment. Technical issues have arisen that need to be resolved in order to improve performance, quality and productivity. This invention aims to solve this problem.

[0005]

[Means to solve the problem]

This invention is proposed to achieve the above purpose, and is , the bracket 39 is attached so that it can be adjusted forward and backward using adjustment means such as screws 54 and long holes 55. Then, shafts 24 and 49 are installed upright on the chassis 21 and the bracket 39, respectively, and A height adjustment screw 51 that supports the rotating arm 36 is screwed onto one shaft 24, and the shaft 24 , 49 to pivot the rotating arm 36, and attach the head mounting plate 38 to the rotating arm 36. The head can be freely adjusted in the left and right direction using adjustment means such as screws 40 and long holes 41. Adjusting the head of a thermal recording tape printer by fixing the thermal head 4 to the attached plate 38 constitutes a means.

[0006]

[Effect]

The head mounting plate to which the thermal head is fixed can be adjusted using screws, long holes, etc. It is attached to the rotating arm, and the lateral position can be adjusted by loosening the screws, etc. - Attach the head mounting plate at the position where the heating element of the multi-head comes into contact with the outer periphery of the drive roller. Just fix it. A height adjuster screwed onto one of the two shafts that pivot the rotating arm vertically. When the adjustment screw is rotated, the rotating arm moves parallel to the vertical direction, adjusting the printing position. The height can be adjusted. The shaft is provided on the chassis and the bracket. The seat is attached to the chassis via adjustment means such as screws and slotted holes. Therefore, the bracket If you move the bracket back and forth, the axis of the bracket will move back and forth with respect to the axis of the chassis, causing rotation. The front and back inclination angle of the movable arm changes, causing the thermal head to tilt against the drive roller. adjustment can be made.

[0007]

【Example】

An embodiment of this invention will be described below in detail with reference to the drawings. In addition, understanding the structure of the idea For ease of explanation, we will explain the entire tape printer. Figure 1 shows a tape printer 1. This is what I did. The tape printer 1 has ink ribbon cassettes 2 arranged on the right side of the top surface. Attach the tape cartridge 3 to the thermal head 4 of the tape printer 1 body. Therefore, printing is performed on the tape 5 housed in the tape cartridge 3. Said The tape 5 stored in the tape cartridge 3 is an adhesive tape with a paper backing, and is Similar to the ink ribbon 6 of the ink ribbon cassette 2, various colors are available. . The ink ribbon cassette 2 and tape cartridge 3 of the tape printer 1 At the installation site, there are first and second drive rollers 7, 8, and a first drive roller that also serves as a platen. A thermal head 4 that can be pressed against the roller 7, a pin that can be pressed against the second drive roller 8 A chill roller 9, a take-up reel shaft 10, and a supply reel shaft 11 for the ink ribbon 6 are arranged. It is set up.

[0008] Place the arbitrarily selected ink ribbon cassette 2 and tape cartridge 3 on the tape. When installed in the printer 1, the ink ribbon 6 and tape 5 are connected to the first and second drives. It is set in the gap between the moving rollers 7, 8, the thermal head 4, and the pinch roller 9. Ru. The tape cartridge 3 is provided in the tape printer 1 and passes through the center hole of the tape cartridge 3. If you turn the lock knob 12 that protrudes upward through the tape in the direction of arrow L, the tape car At the same time that the cartridge 3 and ink ribbon cassette 2 are fixed, the thermal head 4 and a pinch roller 9 are in pressure contact with the first and second drive rollers 7 and 8, respectively, and the The tape 5 and the ink ribbon 6 are pressed together.

[0009] When characters, symbols, etc. are entered from the keyboard 13 of the tape printer 1, the contents are displayed. is displayed on the display unit 14, and the print instruction by pressing the print key 15 on the keyboard 13 is displayed on the display unit 14. The first and second drive rollers 7 and 8 rotate according to the command, and the tape 5 and the ink ribbon are rotated. The thermal head 4 is moved toward the left in the figure while keeping it in close contact with the thermal head 4. transfers the thermal transfer ink of the ink ribbon 6 onto the surface of the tape 5 according to the input contents. Copy. The ink ribbon 6 is rotated by the rotation of the take-up reel shaft 10 of the tape printer 1. The take-up reel in the ink ribbon cassette 2 is moved in conjunction with the running of the tape 5. 16. The printed tape 5 is ejected to the left side of the tape cartridge 3. When the cut key 17 is pressed, a cutting mechanism (not shown) provided in the tape printer 1 is pressed. Therefore, it is cut by actuating it.

0010 FIG. 2 shows the drive system 18 of the tape printer 1, where 19 is a drive motor and 20 is a belt. 21 is a chassis. A head unit is provided in the opening 22 formed in the chassis 21. The thermal head 4, on which the knit 23 is arranged and raised from the bottom of the chassis 21, is The heating element R of the thermal head 4 rotates around a height adjustment shaft 24 (described later) as a fulcrum. It is formed so as to come into contact with a first drive roller 7 which also serves as a platen.

[0011] By operating the lock knob 12 shown in FIG. 1, the slide pieces 60, 61 shown in FIG. interlocks and slides in the front-rear direction (up and down in the figure) and is connected to the slide piece 61. The thermal head 4 is pressed against/separated from the first drive roller 7. In addition, 62 is a buffer It is a coil spring for. Left and right locks that press against the back of the head unit 23 The levers 25 and 26 are pivotally connected to shafts 27 and 28 near the side edges of the chassis 21, respectively. Screws 29 and 30 are interposed to constantly urge the tip end toward the thermal head 4 side. Before The rear parts of the lock levers 25 and 26 are bent into an L shape and extended downward in the figure. In addition, the distal end portions are bent inward to form locking portions 31 and 32. and, As shown in FIG. 3, ink to be attached to the take-up reel shaft 10 and the supply reel shaft 11 Step portions 2a or 2a that engage with the locking portions 31 and 32 are provided on both left and right side surfaces of the ribbon cassette 2. Provide a recess, etc. This causes the thermal head 4 to move to the first position as shown in the figure. When the lock levers 25 and 26 are pressed against the drive roller 7, the locking portions 31 of the lock levers 25 and 26 , 32 are rotated inward by the bias of springs 29, 30, and the ink ribbon cassette Shears the ink ribbon cassette 2 by engaging with the stepped portions 2a on both left and right sides of the ink ribbon cassette 2. Fixed to 21.

0012 In FIG. 2, the pinch roller 9 disposed near the second drive roller 8 is a rotating lever. 33, and the rotary lever 33 is connected to a shaft 34 which is erected on the chassis 21. It is pivoted to. The rotating lever 33 is moved counterclockwise in the figure by a spring 33a. The rear protrusion 35 is biased toward the outer periphery of the rotating arm 36 of the head unit 23. It is pressed into contact with a cam portion 37 provided in the section. Therefore, as shown in the figure, the thermal head When the door 4 is away from the first drive roller 7, the rotary lever 33 is moved away from the first drive roller 7. The pinch roller 9 is rotated clockwise by the cam portion 37 and the pinch roller 9 is rotated clockwise by the cam portion 37. It is separated from.

[0013] Further, as shown in FIG. 3, the rotating arm 36 rotates to move the thermal head 4 to the first When the rotating arm 36 rotates, the rotating lever 3 3 rotates, presses the pinch roller 9 against the second drive roller 8, and presses the tape 5. Apply pressure. Therefore, the running of the tape 5 is controlled by the first and second drive rollers 7 and 8. It can be delivered accurately without causing lip. In addition, the pinch roller 9 is O. A point contact device such as a ring is used to connect the first and second drive rollers 7 and 8. This suppresses disturbances in the running path caused by vertical angle errors, etc., and makes the running of the wide tape 5 safer. We are striving to standardize the system.

[0014] 4 to 6 show the head unit 23, which is a thermal It is formed from a head 4, a head mounting plate 38, a rotating arm 36, and a bracket 39. It is. The head mounting plate 38 to which the thermal head 4 is fixed is connected to the rotating arm 3. 6 with screws 40, 40, etc., and as shown in Fig. The mounting position of the head mounting plate 38 can be adjusted by using the same holes as long holes 41, 41, . . . in the left and right direction. Knots form.

[0015] The rotating arm 36 rotates the arm portion 43 by 90 degrees from the bearing portion 42 which is U-shaped in front view. It is bent and extends laterally, and a lateral position adjustment screw 44 is provided at an intermediate portion of the bearing portion 42. is loosely fitted in a rotatable manner, and the threaded portion 45 of the adjusting screw 44 is installed in the head mounting plate 38. It is screwed into the girder screw receiving part 46. Therefore, loosen the screws 40, 40, etc. mentioned above. The head mounting plate 38 can be slightly moved left and right by rotating the horizontal position adjustment screw 44. When the thermal head 4 is brought into contact with the first drive roller 7, as shown in FIG. The position where the heat generating part R of the thermal head 4 contacts the outer circumferential surface of the first drive roller 7 as shown The screws 40, 40, . . . may be tightened.

[0016] The upper bearing 47 of the bearing part 42 is attached to the chassis 21 as shown in FIGS. 5 and 6. The lower bearing 48 is loosely fitted into the vertically installed height adjustment shaft 24, and the lower bearing 48 is installed vertically at the bottom of the bracket 39. The rotary arm 36 is pivotally supported by being loosely fitted onto the support shaft 49 . The height adjustment shaft 24 is provided with a threaded portion 50, and a cylindrical height adjustment screw 51 is screwed into the threaded portion 50. The upper bearing 47 is supported on the upper surface of the height adjustment screw 51. And height adjustment axis 2 A washer 52 is fitted onto the upper part of the upper bearing 47, and a coil spring 5 is inserted between the washer 52 and the upper bearing 47. 3, the upper bearing 47 is pressed against the height adjustment screw 51, and the upper and lower parts of the rotating arm 36 are Prevents directional wobbling and prevents the adjustment screw 51 from rotating accidentally. do. When the height adjusting screw 51 is rotated, the height adjusting screw 51 rotates as the adjusting screw 51 moves up and down. The movable arm 36 moves up and down in conjunction, allowing the height of the thermal head 4 to be adjusted. Ru.

[0017] The bracket 39 shown in FIG. 4 has a screw 54 on the bottom surface of the chassis (not shown). 54..., and the screw holes of the bracket 39 are elongated holes 55, 55 that are long in the front and back direction. The front and back position of the bracket 39 can be adjusted as... Chassis 2 as shown in Figure 6 A tilt adjustment screw 57 having a cam portion 56 is pivotally supported on the bracket 1. A horizontal elongated hole 58 is bored in 39, and the cam portion 56 is loosely fitted into the elongated hole 58. . Incidentally, reference numerals 59 and 59 are slide guides fixed to the chassis 21.

[0018] Loosen the screws 54, 54... and rotate the tilt adjustment screw 57 to remove the bracket. 39 is pressed by the cam portion 56 and moves back and forth within a certain range. At this time, the support The pivot arm 36 connected to the bracket 39 by a shaft 49 is attached to the chassis 21. Since it swings back and forth using the height adjustment shaft 24 as a fulcrum, the After adjusting the tilt of the thermal head 4, tighten the screws 54, 54... to fix it. do. In this way, with the head unit 23 attached to the chassis 21, The head 4 can be adjusted freely.

[0019] This invention may be modified in various ways without departing from the spirit of this invention. Naturally, this invention extends to modified versions of these.

[0020]

[Effect of the idea]

Since this invention is configured as detailed in the above embodiment, the head unit Vertical, horizontal, and tilt positions of the thermal head with the head installed on the chassis. Adjustments can be made. Therefore, there is no need to attach or detach the head unit for adjustment. This not only significantly improves work efficiency, but also allows for adjustments while visually observing the actual printing condition. This allows accurate fine adjustment without the adjustment error caused by attachment and detachment, and improves quality. This is a practical and valuable idea that significantly improves quality, performance, and productivity.

[Brief explanation of drawings]

FIG. 1 is a plan view of a tape printer.

FIG. 2 is a partially cutaway plan view of the drive system chassis of the tape printer.

FIG. 3 is a plan view of the drive system chassis showing a state in which an ink ribbon cassette is attached.

FIG. 4 is a plan view of the head unit.

FIG. 5 is a sectional view taken along line A-A in FIG. 4;

FIG. 6 is a sectional view taken along line BB in FIG. 4;

[Explanation of symbols]

1 tape printer 4 Thermal head 21 Chassis 23 Head unit 24 Height adjustment axis 36 Rotating arm 38 Head mounting plate 39 Bracket 40 screw 41 long hole 49 Support shaft 51 Height adjustment screw 54 Screw 55 long hole

──────────────────────────────────────────────── ─── Continued from the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display location B41J 25/316 25/34 9111-2C B41J 25/28 Z

Claims (1)

[Scope of utility model registration request] 1. A bracket 39 is attached to the chassis 21 so that it can be adjusted forward and backward by adjusting means such as a screw 54 and a long hole 55, and shafts 24 and 49 are respectively provided upright on the chassis 21 and the bracket 39, and one shaft A height adjustment screw 51 supporting the rotating arm 36 is screwed into the shaft 24, 49.
The head mounting plate 38 is attached to the rotating arm 36 so as to be adjustable in the left and right direction using adjustment means such as screws 40 and elongated holes 41, and the thermal head 4 is mounted on the head mounting plate 38. Head unit device of a fixed thermal recording tape printer.