KR100334323B1 - Locking and unlocking thermal ribbon for digital video printers - Google Patents

Abstract

The present invention relates to a device for locking and releasing a thermal ribbon of a digital video printer, the object of which is to be locked between the supply roller and the take-up roller so that the supply roller and the take-up roller are locked when not mounted to the main body of the digital video printer. The thermal ribbon is not released arbitrarily, and the locking state is automatically released as soon as it is mounted on the digital video printer body.

The present invention provides a rotating shaft protruding at both ends, and feeding and winding rollers having a predetermined length installed side by side at a predetermined distance from each other; A thermal ribbon wound on one end of the feed roller from the feed roller to the take-up roller according to the rotation of the take-up roller while the other end is wound on the feed roller. An opening having a bottom surface and having an opening having a predetermined size in a central portion of the upper surface, and a storage case having shaft holes for fitting the rotary shafts on the feed roller and the winding roller on both side surfaces of the front end portion and the rear end portion; A facsimile ribbon cartridge comprising a feed roller inserted in one shaft hole of the storage case and an elastic member which is always elastically opposed to the opposite rotation shaft in a state of being fitted on one rotation shaft of the take-up roller, wherein the other of the feed roller and the take-up roller Rotating the feed roller and the winding roller while being installed inside the side of the storage case corresponding to a certain distance from the shaft hole into which the rotating shaft and the rotating shaft are inserted, and are not mounted to the digital video printer body while being engaged with each other by the elastic force of the elastic member. Locking member for limiting; When the ribbon cartridge is mounted on the seating part in a state where the locking member is installed on the side frame of the cartridge seating part corresponding to the side in which the locking member is installed, it is inserted through the shaft hole on the storage case while pushing the feed roller and the winding roller to the opposite side, and the roller by the locking member It includes a release member for releasing the locked state.

According to the present invention, since the supply roller and the winding roller constituting the ribbon cartridge are not locked to the digital video printer main body by the stopper, the thermal ribbon is not arbitrarily released, and as a result, the thermal ribbon is in an unused state. This can reduce waste.

In addition, since the thermal ribbon is always mounted to the main body in a state of maintaining a constant tension, it is possible to prevent a defective transfer state due to wrinkles or folding of the thermal ribbon, and malfunction of the device is prevented.

Description

Locking and releasing device for thermal ribbon of digital video printer

The present invention relates to a device for locking and releasing a thermal ribbon of a digital video printer, and in particular, a feed roller and a winding roller are locked in a state in which it is not mounted to the digital video printer main body so as to be locked. The thermal ribbon is not loosened arbitrarily, and the locking state is automatically released when the thermal ribbon is mounted on the main body of the digital video printer.

In general, a digital video printer is an apparatus for electrically transmitting and receiving text, pictures, and photographs on a paper, and is a contact image sensor (hereinafter referred to as a CIS) that recognizes the contents of an original, and an original by the CIS. A transmission unit made of a CIS roller or the like for transporting the light, a thermal transfer head for receiving the electrical signal received from the outside and recording the same on a recording surface, and being rotated in place under the TPH. And a receiving unit made of a platen roller or the like which allows the recording paper to pass in a state of being in close contact with the TPH.

Digital video printers configured as described above are classified into models using thermal recording paper which is directly thermally processed on the surface of the recording paper according to the model and rolled in roll form, and models that can print data on general paper by attaching a separate thermal ribbon. do.

In the digital video printer using the plain paper, the thermal ribbon wound between the feed roller and the winding roller on the ribbon cartridge is simultaneously transferred when the paper passes the TPH, and in this process, the wax layer coated on the surface of the thermal ribbon is specially coated. Is output, the output data is configured to be transferred onto a sheet.

1 is an exploded perspective view showing a ribbon cartridge of a conventional digital video printer.

Referring to this, the ribbon cartridge 20 installed in the cartridge seat 10 inside the digital video printer body is pre-wound on the supply roller 22, the winding roller 24, and the supply roller 22, One end is fixed to the take-up roller 24, the thermal ribbon 26 is wound while being transported from the feed roller 22 to the take-up roller 24 during operation of the digital video printer, the feed roller 22, winding It consists of a storage case 28 in which the roller 24 and the thermal ribbon 26 are accommodated.

The storage case 28 has a lower surface opening, a through hole 30 having a predetermined size in which the TPH is installed in the upper surface center, and the rotating shaft 32 on each of the rollers 22 and 24 is fitted to both sides. The losing shaft 34 is formed of a structure formed.

A drive shaft insertion groove 38 is formed at an end surface of one side of the rotating shaft 32 of each of the rollers 22 and 24 to which the driving shaft 36 is rotated by receiving power from a driving motor (not shown). On the opposite rotation axis of the feed roller 22 and the take-up roller 24 is always fitted with an elastic member that is elastically acting in the direction of the drive shaft.

When the ribbon cartridge 20 thus formed is mounted to the cartridge seat 10 in the digital video printer body, the thermal ribbon 26 wound between the supply roller 22 and the take-up roller 24 is positioned on the upper surface of the TPH. At the same time, the drive shaft 36 protruding from both side walls of the cartridge seat 10 is fitted into the drive shaft insertion groove 38 formed on one side rotation shaft 32 of each roller.

When the paper set in the paper feed cassette is supplied by the paper feed roller in this state, the drive motor is driven by the application of a signal from the controller, and the drive shaft 36 is rotated by the driving force.

Accordingly, the feed roller 22 and the take-up roller 24 are rotated so that the transfer is performed as the paper and the thermal ribbon 26 pass through the TPH while being in close contact with each other.

However, since the ribbon cartridge 20 of such a conventional digital video printer is not provided with a locking device for restricting the rotation of the feed roller 22 and the take-up roller 24, since it is mounted on the cartridge seat 10, In the case of separating the ribbon cartridge 20, the supply roller 22 on the ribbon cartridge 20 and the rotating shaft 32 on the take-up roller 24 are arbitrarily rotated in the shaft hole 34, and as a result, the supply roller 22 There is a problem that expensive ribbons are wasted as the thermal ribbon 26 on the top is loosened or a portion which is not yet used is wound toward the take-up roller 24.

In addition, when the thermal ribbon 26 is loosely mounted in the digital video printer main body, the transfer state becomes poor as it is folded or wrinkled in the printing process, as well as malfunction due to a mechanism such as TPH or platen roller. There is a serious problem that causes.

An object of the present invention is to lock the feed roller and the take-up roller in the state that is not mounted to the digital video printer main body so that the thermal ribbon wound between the feed roller and the take-up roller is not released arbitrarily, while being mounted on the digital video printer main body The present invention provides a locking and releasing device for a thermal ribbon of a digital video printer which is automatically unlocked.

1 is an exploded perspective view showing a ribbon cartridge of a conventional digital video printer,

2 is an exploded perspective view of an installation state of a ribbon cartridge to which a locking and releasing device of a thermal ribbon according to the present invention is applied;

3 is an exploded perspective view of the main portion of the present invention,

Figure 4 is a front sectional view showing a state in which the ribbon cartridge according to the present invention is not mounted on the digital video printer,

5 is a front sectional view showing a state in which a ribbon cartridge according to the present invention is mounted on a digital video printer.

*** Explanation of symbols for the main parts of the drawing ***

10: cartridge seating portion 20: ribbon cartridge

22: supply roller 24: take-up roller

26: thermal ribbon 40: coil spring

50: restraint member 52: stopper

54: stopper locking groove 56: lock plate

60: release member 62: drive shaft fitting hole

64 body portion 66 release lever.

In order to achieve the above object, the present invention provides a feeding and winding roller of a predetermined length which is installed side by side at a predetermined distance from each other, the rotating shaft is protruding from both ends; A thermal ribbon wound on one end of the feed roller from the feed roller to the take-up roller according to the rotation of the take-up roller while the other end is wound on the feed roller. An opening having a bottom surface and having an opening having a predetermined size in a central portion of the upper surface, and a storage case having shaft holes for fitting the rotary shafts on the feed roller and the winding roller on both side surfaces of the front end portion and the rear end portion; A ribbon cartridge of a digital video printer comprising a feed roller inserted in one shaft hole of the storage case and an elastic member which is always elastically in the opposite rotation shaft direction while being fitted on one rotation shaft of the take-up roller, wherein the feed roller and the take-up roller It is installed inside the side of the storage case corresponding to a certain distance away from the shaft hole into which the other rotating shaft and the rotating shaft are inserted, and the feeding roller and the winding roller are engaged with each other by the elastic force of the elastic member without being mounted on the digital video printer body. A locking member for limiting rotation of the lock member; When the ribbon member is installed on the side frame of the cartridge seating part corresponding to the side in which the locking member is installed, the ribbon cartridge is inserted through the shaft hole on the storage case while pushing the feed roller and the winding roller to the opposite side to unlock the roller. It characterized in that it comprises a release member for letting.

In the present invention, the locking member is at least one stopper protruding into the side of the storage case corresponding to a position away from the shaft hole in which one of the rotary shaft on the feed roller and the take-up roller is fitted, and the rotating shaft facing the stopper It is formed to protrude in, has a feature consisting of an annular locking plate formed a plurality of stopper rim grooves at regular intervals so that the stopper can be inserted.

The release member in the present invention is a drive shaft fitting hole is formed on the surface corresponding to the center of rotation of each roller constituting the ribbon cartridge, the body portion is fixed on the side frame constituting the cartridge seat; It has a feature consisting of a release lever protruding from the inner surface of the body portion corresponding to a position corresponding to any point of the shaft hole on the storage case constituting the ribbon cartridge.

According to the configuration of the present invention, the thermal ribbon is not arbitrarily released as the supply roller and the take-up roller are locked while the ribbon cartridge is not mounted to the digital video printer main body. As the locking state is automatically released, the rotation of the thermal ribbon becomes possible as the feed roller and the take-up roller are rotated.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is an exploded perspective view of an installation state of a ribbon cartridge to which the locking and releasing device of the thermal ribbon according to the present invention is applied, and FIG. 3 is an enlarged exploded perspective view of the main portion of the present invention.

Referring to this, a cartridge seat 10 is formed inside the body of the digital video printer, and both inner surfaces of the cartridge seat 10 receive power from a separate driving motor (not shown) in a predetermined direction. Rotating drive shaft 36 protrudes to a constant length.

The cartridge mounting portion 10 is wound a plurality of times in a state fixed to the supply roller 22, the winding roller 24 and the supply roller 22, the other end is fixed to the winding roller 24 In accordance with the rotation of the take-up roller 24 in the transfer roller 22 to the winding roller 24 is wound while being transported, each of the rollers 22, 24 and the thermal ribbon 26 A ribbon cartridge 20 consisting of a storage case 28 to be stored is mounted.

The feed roller 22 and the take-up roller 24 which are installed side by side at a predetermined distance from the feed roller 22 are formed in a rod-like shape having both lengths, and both ends thereof have a rotating shaft 32. Has a protruding structure.

The storage case 28 has a bottom surface is opened and a through hole 30 having a predetermined size is formed in the center of the upper surface, the rotary shaft 32 on the feed roller 22 and the winding roller 24 on both sides of the front end portion and the rear end portion. The shaft hole 34 to be fitted is formed.

On one rotation shaft 32 of the supply roller 22 and the take-up roller 24 inserted into one shaft hole 34 of the storage case 28 is configured to always be fitted with an elastic member that acts in the opposite rotation axis direction, The elastic member is composed of a coil spring (40).

The drive shaft 36 has a leading end portion of the 'D' shape or its outer circumferential surface is formed in an uneven shape, and according to the drive shaft 36 on the end surface of the one side rotation shaft 32 on the supply roller 22 and the take-up roller 24 accordingly. The drive shaft insertion groove 38 having the same shape as the shape of is formed.

On the other hand, a locking member 50 is installed between the one side rotation shaft 32 of the feed roller 22 and the take-up roller 24 and the inner surface of the storage case 28, the outer surface of the storage case 28 and the cartridge The release member 60 is installed between the side frames of the seating portion 10.

The locking member 50 protrudes into the side of the storage case 28 corresponding to a position away from the shaft hole 34 into which one of the rotary shafts 32 on the feed roller 22 and the take-up roller 24 is fitted. At least one stopper 52 and the coil spring 40 on the feed roller 22 and the take-up roller 24 protrude from the rotary shaft opposite to the rotary shaft to which the stopper 52 is inserted. A plurality of stopper locking grooves 54 are formed to have an annular locking plate 56 formed at a predetermined interval.

The release member 60 is fixedly installed on the side frame 12 constituting the cartridge mounting portion 10, the drive shaft on the surface corresponding to the rotation center line of each of the supply roller 22 and the take-up roller 24 The body portion 64 in which the fitting hole 62 is formed, and the body portion 64 corresponding to any position of the shaft hole 34 on the storage case 28 constituting the ribbon cartridge 20. It consists of a release lever 66 protruding from the side.

The body 64 constituting the release member 60 is fixed on the side frame 12 of the cartridge seat 10 by means of a screw 70.

The operation of the present invention made as described above is as follows.

Figure 4 is a front sectional view showing a state in which the ribbon cartridge according to the present invention is not mounted on the digital video printer.

Referring to this, both the rotary shafts on the feed roller 22 and the winding roller 24 on which the thermal ribbon 26 is wound are fitted into the shaft holes 36 formed on both sides of the storage case 28, respectively, One side of the inner surface of the 28 and the one side of the rotation axis corresponding to the feed roller 22 and the winding roller 24, the coil spring 40 having elasticity acting in the opposite rotation axis direction is always fitted.

By the action of the coil spring 40 such that the supply roller 22 and the winding roller 24 are in close contact with the opposite side of the storage case 28, the stopper 52 protruding from the inner surface of the storage case 28 Is inserted into the stopper engaging groove 54 formed in the locking plate 56 on each of the rollers 22 and 24 to prevent any rotation of the feed roller 22 and the take-up roller 24.

5 is a front sectional view showing a state in which a ribbon cartridge according to the present invention is mounted on a digital video printer.

Referring to this, when the ribbon cartridge 20 is mounted on the cartridge seat 10, the drive shaft 36 is inserted through the drive shaft fitting hole 62 on the body portion 64 constituting the release member 60 is supplied. It fits in the drive shaft insertion groove 38 on the rotating shaft 32 of the side in which the locking plate 56 was formed on the roller 22 and the winding roller 24. As shown in FIG.

At the same time, the release lever 66 protruding from the inner surface of the body portion 64 is inserted through the shaft hole 34 on the storage case 28 to push the locking plate 56 in the opposite direction, thereby supplying the feed roller. 22 and the winding roller 24 are pushed in the opposite direction while compressing the coil spring 40 which is an elastic member.

As a result, the stopper 52 fitted into the stopper engaging groove 54 on the lock plate 56 is released, and the rollers 22 and 24 are in a rotatable state.

In this state, when the driving motor (not shown) is rotated, the driving shaft 36 is rotated by receiving the power, and as a result, the supply roller 22 and the take-up roller 24 rotate so that the feed roller 22 is rotated. The wound thermal ribbon 26 is wound while being transported toward the take-up roller 24.

At this time, if the paper passes through the upper surface of the storage case 28, the data is thermally transferred to the paper surface by the action of the TPH and the thermal ribbon 26.

When the ribbon cartridge 20 attached to the cartridge seating part 10 is used in this manner, the pressure applied by the release lever 66 is released, and the coil spring that is inserted and compressed on the outer peripheral surface of the opposite shaft is compressed. 40 is returned to its original state.

Accordingly, the feed roller 22 and the take-up roller 24 are also returned to their original state while the stopper 52 is caught by the stopper engaging groove 54 on the lock plate 56, so that the feed roller 22 and the take-up roller 24 ) Is prevented from rotating.

According to the present invention, since the supply roller and the winding roller constituting the ribbon cartridge are not locked to the digital video printer main body by the stopper, the thermal ribbon is not arbitrarily released, and as a result, it is not used. This will reduce the waste of thermal ribbon.

In addition, since the thermal ribbon is always mounted to the main body in a state of maintaining a constant tension, it is possible to prevent a defective transfer state due to wrinkles or folding of the thermal ribbon, and malfunction of the device is prevented.

Claims (1)

Rotation shaft 32 is protruded at both ends, and feeding and winding rollers 22 and 24 of a predetermined length are installed side by side at a predetermined distance from each other; One end is wound a plurality of times in a state fixed to the feed roller 22, the other end from the feed roller 22 in accordance with the rotation of the take-up roller 24 in a state fixed to the take-up roller 24 A thermal ribbon 26 wound around the winding roller 24; The bottom surface is opened and a through hole 30 having a predetermined size is formed in the center of the upper surface, and the shaft hole 34 for fitting the rotary shaft 32 on the feed roller 22 and the winding roller 24 to both sides of the front end portion and the rear end portion. A formed storage case 28; In the ribbon cartridge of the digital video printer made of an elastic member which is always elastically in the opposite rotation axis direction in the state of being fitted on one rotation shaft of the supply roller 22 and the take-up roller 24 inserted into one shaft hole of the storage case 28. In At least one stopper formed to protrude into the side of the storage case 28 corresponding to a predetermined distance from the other rotary shaft of the feed roller 22 and the take-up roller 24 and the shaft hole 34 into which the rotary shaft is inserted 52 and a plurality of stopper catching grooves 54 protruding on the rotation shaft of the supply roller 22 or the winding roller 24 facing the stopper 52 so that the stopper 52 can be inserted. Consists of an annular locking plate 56 formed at regular intervals, the ribbon cartridge is not attached to the digital video printer body, and the rotation of the feed roller 22 and the winding roller 24 is engaged with each other by the elastic force of the elastic member. A locking member 50 for limiting; It is installed on the side frame 12 of the cartridge seating portion 10 corresponding to the side on which the locking member 50 is installed, and on the rotation center line of the supply roller 22 and the winding roller 24 constituting the ribbon cartridge 20. Body corresponding to the position corresponding to any point of the body portion 64, the drive shaft fitting hole 62 is formed on the corresponding surface, and the shaft hole 34 on the storage case 28 constituting the ribbon cartridge 20 Consists of a release lever 66 protruding from the inner side of the portion 64, when the ribbon cartridge 20 is mounted to the cartridge seating portion 10, the supply roller 22 and the take-up roller 24 are pushed in opposite directions to lock the member. Locking and releasing device of the thermal ribbon of the digital video printer comprising a release member (60) for releasing the lock state of the roller by (50).