JPH0222083A - Striplike medium transfer apparatus - Google Patents

Abstract

PURPOSE:To allow a striplike medium to always stably run while said medium is mounted in a case by always keeping the axial direction of a reel almost constant by prescribing the position of the axial direction of the reel by the grasping of the reel by the contact part of a reel stand and the bearing part of the case. CONSTITUTION:When lid 6 is closed, the spring 7 of the lid 6 presses the bearing part 1b of a case 1 toward a lower reel stand 5 and, therefore, the second engaging part 2b of a reel 2 is brought into contact with the contact part 5a of the reel stand 5 and the position of the reel 2 in the axial direction thereof is prescribed by the grasping of the reel 2 by said contact part 5a and the bearing part 1b of the case 1. At this time, the first engaging part 2a of the reel 2 is engaged with the rib 5b of the reel stand 5. When the reel stand 5 is rotationally driven in this state, this rotatory power is transmitted to the reel 2 to perform the transfer of transfer paper 3 in the case 1. The positional prescription of the reel 2 in the rotary direction thereof is performed by supporting the engaging part 2d of the reel 2 by the bearing part 1b of the case 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a strip medium transport device for a cassette containing a strip medium.

[Background of the invention]

As an example of a conventionally used cassette, FIG. 2 shows the structure of a cassette tape transfer device that uses a cassette containing a VTR magnetic tape.

In FIG. 2, inside a cassette case 1 having a pair of openings 1α on the bottom surface, a pair of rotatable reels 2 for supply and winding are arranged side by side, and the shaft of the reel 2 is It is set at the position of the opening 1α, and a magnetic tape 3, which is a band-shaped medium, is wound around the shaft portion. Said reel 2
has a first engaging portion 2α on its shaft portion and a second engaging portion 2α on its lower end.
b. It has a pivot 2C at the upper end, and the pivot 2
G is a leaf spring 4 fixed to the cassette case 1;
is in contact with. Further, the first and second engaging portions 2α
, 2b can be engaged with a reel stand 5 which is a reel driving member.

Now, when the opening 1cL of the cassette case 1 is inserted into the moving shaft of the reel stand 5 and the cassette is mounted, the second engaging part 2b of the reel 2 comes into contact with the contact part 5α of the reel stand 5 in the axial direction. , the pivot 2C is pushed downward by the leaf spring 4, and the position of the reel 2 is adjusted. Since the first engaging portion 2cL of the reel 2 engages with the rib 5b of the reel stand 5, the rotational force of the reel stand 5 is thus transmitted to the reel 2, and the magnetic tape 3 is transferred within the cassette case 1. be exposed.

However, with this conventional cassette structure, when the width of the band-shaped medium is wide, such as when transfer paper used in a thermal transfer type hard copy device is converted into a cassette, the cassette is attached to the device and rotated. When loading the cassette 1
It is difficult to keep the axial direction of the reel in the case constant, and as a result, there is a risk that the tension of the strip-shaped medium may become uneven, causing wrinkles, or increasing torque loss due to frictional resistance. Ta. Further, if the drive shaft of the reel drive member is lengthened in order to avoid such drawbacks, it not only becomes difficult to mount the cassette, but also increases cost.

[Purpose of the invention]

An object of the present invention is to eliminate the drawbacks of the above-mentioned prior art, to make it possible to always run the band-shaped medium stably even if the band-shaped medium in the cassette case is wide, to reduce torque loss due to frictional resistance, and to reduce torque loss due to frictional resistance. An object of the present invention is to provide a belt-shaped medium transport device that can be manufactured at low cost.

[Summary of the invention]

In order to achieve this object, the present invention includes a pair of rotatable reels wound with a band-shaped medium arranged side by side in a cassette case, and a small diameter portion of one end of each reel is connected to the cassette case. A first engaging portion that is inserted into the opening of the case and that can abut in the rotational direction with a rib of the reel driving member that is inserted from outside the cassette case into the one end portion, and a contact portion of the reel driving member that is axially A first engaging portion that can be brought into contact is provided, a convex or concave fitting portion is provided at the other end of each of the reels on the side opposite to the reel driving member insertion side, and the fitting portion is pivotally supported. A concave or convex bearing part is provided in the cassette case, and the fitting part and the bearing part are shaped to regulate the rotational and axial positions of the reel, and the reel of the cassette When the one end of the cassette is fitted to the reel drive member and the cassette is mounted, a spring is provided in the main body of the device that biases the cassette case in the direction of the reel drive member, and the bias of the spring causes the cassette case to move toward the reel drive member. The second engaging part of the reel is brought into contact with the abutting part of the reel stand, and the position of the reel in the axial direction is regulated by sandwiching the corresponding abutting part and the bearing part of the cassette case; The first engaging portion of the reel engages with the rib of the reel, so that the strip-shaped medium is transferred by rotation of the reel stand.

[Embodiments of the invention]

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

FIG. 1 shows one embodiment of the present invention, and is a schematic sectional view of a thermal transfer type hard copy device.

In the figure, 1 is a cassette case, LcL, 1b are a pair of openings and a pair of bearings provided on opposite sides of the cassette case 1, and 2 is a pair of rotatable bearings for supply and winding. Reels 2α, 2b, and 2d are a first engaging portion, a second engaging portion, and a fitting portion of the reel 2, respectively; 3 is a transfer paper that is a wide band-shaped medium; , its ends are fixed to the shafts of the pair of reels 2, and wound around the reels 2. 5 to 7 are parts of the hard copy device, 5 is a pair of reel stands that are reel driving members, 5α and 5b are abutting portions and ribs of the reel stand 5, respectively, 6 is a lid, and 7 is the lid. These are a pair of springs with one end fixed to 6.

The shaft of the reel 2 is connected to the opening 1α of the cassette case 1.
The stepped portion of one end of the reel 2 is inserted into the opening 1α, and the first engaging portion 2cL of the one end is connected to the rib of the reel stand 5. The second engaging portion 2b is capable of engaging with and abutting against the abutting portion 5α of the reel stand 5 in the axial direction.

The fitting portion 2d of the reel 2 is formed in a convex shape with a spherical tip, while the bearing portion 1b of the cassette case 1 is formed in a concave shape, and the bearing portion 1b pivots the fitting portion 2d. The tip of the supporting and fitting portion 2d can come into contact with the upper bottom surface of the bearing portion 1b. That is, the fitting portion 2d and the bearing portion 1b are shaped to regulate the position of the reel 2 in the rotational direction and axial direction. Further, the spring 7 is attached at a position where the bearing portion 1b can be pressed in the direction of the reel stand 5 below after the cassette is attached.

Next, the operation of mounting the transfer paper cassette having the above configuration will be explained.

First, the opening 1α of the cassette case 1 is inserted into the drive shaft of the reel stand 5, and the cassettes 1 to 1 are installed in the hard copy device so that the drive shaft fits with the shaft of the reel 2, and the lid is closed. Close 6. Then, the spring 7 attached to the lid 6 presses the bearing part 1b of the cassette case 1 in the direction of the reel stand 5 below, so that the second engaging part 2b of the reel 2 touches the contact part of the reel stand 5. 5α, and the position of the reel 2 in the axial direction is regulated by the clamping between the corresponding contact portion 5α and the bearing portion 1b of the cassette case 1. At this time, the first engaging portion 2α of the reel 2 is engaged with the rib 5b of the reel stand 5, and when the reel stand 5 is driven to rotate, the rotational force is transmitted to the reel 2, and inside the cassette case 1. The transfer paper 3 is transferred. The fitting part 2d of the reel 2 is connected to the cassette case 1.
Since the cassette case 1 is pivotally supported on the bearing part 1b, the position of the reel 2 in the rotational direction is also regulated. Therefore, even if the lateral pressure of the transfer paper 3 is applied to the reel 2, the posture of the cassette case 1 is reliably maintained. If this is done, the inclination of the reel 2 will be extremely small. Therefore, the axial direction of the reel 2 is always kept almost constant, allowing stable running of the transfer paper 3.
Torque loss due to frictional resistance is also reduced. In addition, the shapes of the bearing portion 1b and the fitting portion 2d are simple, and a simple configuration is sufficient, so there is no risk of an increase in cost.

In addition, in the above embodiment, the case where the bearing part of the cassette case is formed in a concave shape and the fitting part of the reel is formed in a convex shape is explained. The formed fitting portion may be pivotally supported.

〔Effect of the invention〕

As explained above, the present invention includes a pair of rotatable reels wound with a band-shaped medium arranged side by side in a cassette case, and a small diameter portion of one end of each reel is connected to the cassette case. A first engaging portion that is inserted into the opening and can come into rotational direction contact with a rib of a reel driving member inserted from outside the cassette case into the one end portion and comes into axial direction contact with an abutting portion of the reel driving member. A convex or concave fitting part is provided at the other end of each of the reels on the side opposite to the reel driving member insertion side, and a concave fitting part is provided for pivotally supporting the fitting part. Alternatively, the cassette 1 is configured such that a convex bearing part is provided in the cassette case, and the fitting part and the bearing part regulate the position of the reel in the rotational direction and the axial direction, and the reel of the cassette is A spring is provided in the main body of the device to bias the cassette case in the direction of the reel rotating member when the one end of the cassette is fitted to the reel drive member, and the spring biases the cassette case toward the reel rotating member. The second engaging part of the reel is brought into contact with the contact part of the reel stand, and the position of the reel in the axial direction is restricted by sandwiching the corresponding contact part and the bearing part of the cassette case, and at this time, Since the first engaging portion of the reel engages with the rib of the reel, the band-shaped medium is transferred by immediate rotation of the reel stand, so that the band-shaped medium in the cassette case is wide. Even in this case, the belt-shaped medium can always run stably with the belt-shaped medium housed inside the cassette case, loss torque during driving can be reduced, and the configuration is simple. Therefore, it is possible to provide a belt-shaped medium transport device that can be manufactured at low cost and has excellent functions without the drawbacks of the above-mentioned prior art.

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional view showing an embodiment of a strip-shaped medium transport device according to the present invention, and FIG. 2 is a schematic cross-sectional view of a VTR magnetic tape cassette transport device, which is a conventional example. 1...Cassette case 1b...Bearing part 2...
・Reel 2d... Fitting part 3... Band-shaped medium 5... Reel moving member 7... Spring

Claims (1)

[Claims] 1. A pair of rotatable reels wound with a band-shaped medium are arranged side by side in a cassette case, and the stepped portion of one end of each reel is inserted into the opening of the cassette case, and the one end is inserted into the opening of the cassette case. a first engaging portion that can come into contact with the rib of the reel driving member inserted from outside the cassette case in the rotational direction, and a second engaging portion that can come into contact with the abutting portion of the reel driving member in the axial direction. A convex or concave fitting portion is provided at the other end of each of the reels on the side opposite to the reel drive member insertion side, and a concave or convex bearing portion for pivotally supporting the fitting portion is provided. The cassette is configured such that the fitting portion and the bearing portion are provided in a cassette case to regulate the position of the reel in the rotational direction and the axial direction, and the one end portion of the reel of the cassette is connected to the reel drive member. A spring is provided in the apparatus main body to bias the cassette case in the direction of the reel driving member when the cassette is fitted and mounted, and the biasing force of the spring causes the second engaging portion of the reel to move toward the reel. The reel is brought into contact with the abutting part of the base, and the position of the reel in the axial direction is regulated by being held between the abutting part and the bearing part of the cassette case, and at this time, the first engaging part of the reel is A belt-shaped medium moving device, characterized in that the belt-shaped medium is transferred by rotationally driving the reel stand by engaging with the rib of a reel.