JP2001270205A - Ink tape taking-up apparatus in printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ink tape taking-up apparatus in a printer. SOLUTION: The intermediate part of the ink ribbon 30 arranged along a transfer track formed by guides 31, 32 is pushed in the nip between a pair of idling rotary guide rolls 33, 34 to form a constricted part 35 and the rotary power in the in-direction of a reversible rotary motor 16 releasing the connection with a taking-up reel 12 is transmitted to an output gear and a slide plate 23 is displaced along a guide rail 22 with the position of an origin sensor 51 as a starting point by the rotary motion of the output gear 19. In this case, the angle of rotation of the motor 16 is set on the basis of the number of pulses. Succeedingly, the rotary power in the out-direction of the reversible rotary motor 16 releasing the connection with the output gear 19 is transmitted to the taking-up reel 12 and the ink ribbon 30 is taken up while the slide plate 23 is returned by the rotation of the reel 12. The stop of the rotation of the reversible rotary motor 16 is determined by the return signal of the slide plate 23 from the origin sensor 51. The reel 12 and the output gear 19 are respectively equipped with unidirectional clutches in a symmetric direction and the ink ribbon is economically taken up by the reversible rotation of the motor 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink tape winding device for sequentially printing characters such as characters and numerals at predetermined intervals on a printing material such as a packaging film.

[0002]

A thermal transfer type printing apparatus is a thermal transfer type printer that prints, for example, the date of manufacture of a product and the expiration date on a packaging film or label at regular intervals using an ink ribbon tape. However, it is ideal from an economic viewpoint that the intermittent transfer amount of the ribbon tape matches the thermal transfer width, in other words, the character width. However, it is difficult to stop the intermittently transported ribbon tape because the inertia acts when the tape stops, so that the tape is difficult to stop so as to match the character width. Then, the tape is retracted while accumulating the number of pulses. However, in the case where the rotation angle of the take-up reel is set to a constant angle, as the winding diameter of the ribbon tape on the reel increases, the pulling length of the tape also increases. For the calculation and the calculation of the retraction amount of the ribbon tape accompanying the reel rotation angle control, a computer used is required to have a corresponding accuracy.

[0003]

Accordingly, the present invention provides a method for intermittently transporting a ribbon tape by an amount equivalent to a character width without using a high-precision computer. Means for performing thermal transfer, wherein a middle portion of the ink ribbon arranged along a transfer path formed by a guide is squeezed from both sides by a pair of idler guide rolls to form a constricted portion, and the both idler rolls are A rotational meandering means, in which a supporting slide plate is slidably mounted on a guide rail, and an in-direction rotational power of a forward / reverse rotation motor for releasing connection with the take-up reel are transmitted to an output gear, and rotation of the output gear is performed. Ribbon transfer means for displacing the slide plate by the movement from the origin sensor position along the guide rail as a starting point; Control means for setting the rotation angle of the forward / reverse rotation motor in the in-direction based on the number of pulses after the signal transmission, and the rotation power in the out direction of the forward / reverse rotation motor for releasing the connection with the output gear. Means for transmitting the ribbon tape to the take-up reel and pulling the slide plate back toward the origin sensor by rotation of the reel, and the forward direction of the forward / reverse rotation motor in response to the slide pullet return signal from the origin sensor. And control means for determining the stop of the rotation.

The control means for setting the rotation angle of the forward / reverse rotation motor in the in-direction based on the number of pulses after the transmission of the timing signal rotates the forward / reverse rotation motor by a predetermined angle based on the number of pulses after the transmission of the timing signal. . By the rotation in the in-direction, the forward / reverse rotation motor releases the connection with the take-up reel and transmits the rotational power to the output gear, so that the slide plate is displaced from the origin sensor position along the guide rail to the starting point. In this case, the ink ribbon moves by a predetermined length in the same direction as the wrapping material due to the displacement movement of the slide plate, so that the thermal line head prints the ink of the ink ribbon on the wrapping material. In the subsequent rotation of the forward / reverse rotation motor in the out direction, the connection with the output gear is released, and the rotational power is transmitted to the take-up reel, so that the ink ribbon is wound by the pulling action of the ink ribbon wound on the reel. Then, the slide plate is pulled back, and the forward / reverse rotation motor is stopped at the same time when the slide plate reaches the origin sensor position. In this case, the return displacement amount of the slide plate is proportional to the pull-back movement amount of the ink ribbon. Therefore, even if the diameter of the ink ribbon on the take-up reel is increased and the speed of winding the ink ribbon is increased, the amount of return displacement of the slide plate is proportional to the amount of pull-back movement of the ink ribbon regardless of the speed. In short, the ink ribbon is fed by the width of the print character by the rotation of the motor, and is wound up by the width of the character by the reverse rotation of the motor.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A supply reel 11 and a take-up reel 12 are provided on the front side of a substrate 10 shown in FIG.
4 and placed. As shown in FIG. 2, a pulley 1 fixed to the shaft of a forward / reverse rotation motor 16 fixed to the back of the substrate 10
7 and a pulley 1 fixed to a shaft of the take-up reel 12
8 and the pulley 20 fixed to the shaft of the output gear 19
While being connected by a power transmission band 21 such as an annular timing belt, a slide plate 23 slidably supported by a guide rail 22 and a belt 24 supported by three pulleys are connected by screws 25 in FIG. The output gear 19 meshes with a rotation direction conversion gear 27 fixed to a pulley shaft 26 supporting the belt 24.

On the other hand, the ink ribbon 30 forms a transfer trajectory by several roll guides 31 and 32 on the left and right.
The two idler rolls 33 and 34 supported by the slide plate 31 are provided with a ribbon meandering means for squeezing the middle of the ink ribbon toward the center and forming a constricted portion 35 on the ink ribbon 30. Therefore, when the slide plate 23 reciprocates along the guide rail 22, the surface of the ink ribbon 30 facing the wrapped material 36 repeatedly moves left and right.

FIG. 3 is a simplified version of the configuration of FIG.
The take-up reel 12 and the output gear 19 are provided with one-way clutches 40 and 41, respectively. However, when the forward / reverse rotation motor shaft 16 rotates in the in-direction 38, the same motor 1
While the connection between the take-up reel 6 and the take-up reel 12 is released, the rotation of the output gear 19 is transmitted to the belt 24 via the intermediate gear 27. On the other hand, the rotation 3 of the motor shaft 16 in the out direction
At 9, the connection to the output gear 19 is released, and the take-up reel 12 is rotated to take up the ribbon tape 30.

In FIG. 3, a pulse generator 45 operated by the rotational power of the roller 42 and a timing transmitter 44 for monitoring the movement of the material 36 to be continuously conveyed in the direction of the arrow 43 are provided. The timing transmitter 44 detects the registration mark interval of the wrapped material 36, and detects the label pitch in the case of the sheet 36 to which the blank label is attached,
A timing signal is transmitted from the transmitter 44 in FIG. On the other hand, since the transmitter 45 rotated by the drive rotor 42 of the wrapped material 36 continuously transmits the pulse 47 to the controller 46, simultaneously with the transmission of the timing signal, the forward / reverse rotation motor 16 rotates by the set number of pulses in the in-direction. The rotating motion displaces the slide plate 23 integrally with the first belt 24 via the belt 21 and the intermediate gear 27 to displace the ribbon tape 30 in one direction 48. In this case, the thermal line head 90 in FIG.
Is thermally transferred to the packaging material 36. The displacement amount of the ink ribbon includes a space 50 such that the character widths 49 in FIG. 5 do not overlap. Further, the rotation angle of the forward / reverse rotation motor 16 in FIG. 4 can be controlled by a pulse generated by a pulse generator 51 driven by the motor 16.

Then, the forward / reverse rotation motor 16 rotates the rotation in the out direction via the one-way clutch 40 to the take-up reel 12.
So that the ribbon tape 30 is also in one direction 48
It is wound up. By winding the ribbon tape 30 on the reel in FIG. 3, when the slide plate 35 returns to the original position, a kinetic force is applied to the belt 24.
Since the one-way clutch 41 of the output gear 19 is in the releasing direction, the belt 24 can rotate in the reverse direction, and when the slide plate 23 returns to the position of the origin sensor 51, the forward / reverse rotation motor 16 stops.

In the above control, the controller only needs to control the rotation angle of the motor by the number of pulses, and the control configuration is extremely simple.

In the embodiment shown in FIG. 6, the intermediate gear 27 is
This embodiment differs from the embodiment shown in FIG. 1 in that it is directly meshed with the rack teeth 60 formed on the slide plate 23 and the belt 24 shown in FIG. Also in this case, the take-up reel 12 and the output gear 19 each have a one-way clutch, and the other structures are the same as those in FIG.

A gear 71 fixed to a shaft of a first motor 70 shown in FIG. 7 includes a driving pulley 74 for a belt 73 connected to a slide plate 72 and a one-way clutch 75.
Mesh with a gear 76 having The rotational power of the first motor 70 driven by the set number of pulses is displaced via the gear 76 using the origin sensor 77 as a starting point to displace the slide plate 72 and displace the ink ribbon 78 in the direction of the arrow. Subsequently, the second motor 79 rotates the reel 80 to rotate the ribbon tape 7.
8 is wound, the slide plate 72 returns to the home position, and the origin sensor 77 stops the second motor 79. In this case, the one-way clutch 75 tends to loosen.

[Brief description of the drawings]

Fig. 1 Front view

[Fig. 2] Side view

FIG. 3 is a simplified diagram of FIG. 1;

FIG. 4 is a block diagram of the device.

FIG. 5 is an explanatory diagram of a winding pitch of an ink ribbon.

FIG. 6 is an explanatory view of another embodiment.

FIG. 7 is an explanatory view of another embodiment.

[Description of Signs] 11 supply reel 12 take-up reel 16 forward / reverse rotation motor 17 pulley 19 output gear 21 power transmission band 22 guide rail 23 slide plate 24 belt 27 intermediary gear 31, 32 Guides 33, 34: Idling rolls 35: Neck 36: Packaging material 40, 41: One-way clutch 44: Timing signal generator 45, 51: Pulse generator 46: Controller 49: Character width 50: Space 60: Rack Tooth 70: First motor 79: Second motor

Claims (5)

[Claims] 1. A means for thermally transferring ink on a ribbon tape, one end of which is engaged with a take-up reel, to a printing material,
An intermediate portion of the ink ribbon arranged along a transfer path formed by a guide is squeezed from both sides by a pair of idler guide rolls to form a constricted portion, and a slide plate supporting both idler rolls is provided on a guide rail. Ribbon meandering means slidably mounted on the transmission reel transmits the in-direction rotational power of a forward / reverse rotation motor for releasing the connection with the take-up reel to the output gear, and rotates the slide plate by the rotational movement of the output gear. Ribbon transfer means for displacing the origin sensor position as a starting point along the guide rail, control means for setting a rotation angle of the forward / reverse rotation motor in the in-direction based on the number of pulses after transmission of the timing signal, and the output gear Transmitting the rotational power in the out direction of the forward / reverse rotation motor to release the connection with the take-up reel, Means for winding the ribbon tape while pulling back the slide plate in the direction of the origin sensor by the rotation of the reel, and stopping the rotation of the forward / reverse rotation motor in the out direction is determined by the slide pullet return signal from the origin sensor. A device comprising control means. 2. A forward / reverse rotation motor shaft, a take-up shaft, and an output gear shaft are integrally connected with an endless power rotation band, and are connected to the take-up shaft and the output gear shaft respectively in a symmetric rotational direction. 2. The motor according to claim 1, wherein one direction is provided, wherein the clutch of the take-up reel is loosened by rotation of the forward / reverse motor in the in direction, and the output gear clutch is loosened by rotation of the forward / reverse motor in the out direction. Equipment. 3. A pulse which is set by the control means to set the rotation angle of the forward / reverse rotation motor is a pulse generated from either a pulse generator rotated by a transporting roll of the wrapped material or a pulse generator receiving rotation of the forward / reverse rotation motor. The device according to claim 1, wherein the device is used. 4. A means for thermally transferring ink on a ribbon tape, one end of which is engaged with a take-up reel, to a material to be printed.
An intermediate portion of the ink ribbon arranged along a transfer path formed by a guide is squeezed from both sides by a pair of idler guide rolls to form a constricted portion, and a slide plate supporting both idler rolls is provided on a guide rail. The rotating power of the first motor is transmitted to the output gear, and the slide plate is displaced from the origin sensor position along the guide rail by the rotational movement of the output gear. Control means for setting the rotation angle of the first motor based on the number of pulses after the ribbon transfer means and the transmission of the timing signal; and, after the first motor is stopped, transmitting the rotation power of the second motor to the take-up reel; Winding the ribbon tape while pulling back the slide plate in the direction of the origin sensor by rotation of the reel Stage and, apparatus comprising a control means for determining the second rotation stop of the motor with a slide Poulet preparative return signal from the origin sensor. 5. A pulse for which the control means sets the rotation angle of the first motor uses a pulse generator which is rotated by a roll to be packaged or a pulse generator which is rotated by the first motor. 5. The device of claim 4, wherein