JP2606467Y2 - Label continuum transfer mechanism of label printer - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a label continuum transfer mechanism of a label printing apparatus, and more particularly to a label continuum transfer mechanism of a label printing apparatus which can be made compact as a whole.

[0002]

2. Description of the Related Art Heretofore, as a label printing apparatus of this kind, a label continuum in which a number of label pieces are temporarily attached on a band-shaped mount is used, printing is performed on each label piece, and the label pieces are peeled off from the mount. The peeled label piece is to be affixed to a desired product or the like.

As a printing method, there are a thermal transfer method in which thermal transfer is performed using a belt-shaped carbon ribbon, and a thermal coloring method in which a label piece itself is colored by heat. In any case, the label continuous body is formed at a predetermined pitch. A transport mechanism for transport is required.

A conventional label continuum transfer mechanism will be described with reference to FIG.

FIG. 5 is an overall schematic view of a conventional general label printing apparatus 1.
An apparatus frame 2 and a number of label pieces 4 on a band-shaped mount 3
A supply shaft 6 of the label continuum 5 to which the label is temporarily attached, a printing mechanism 9 having a thermal print head 7 and a platen 8, a peeling mechanism 11 having a peeling plate 10, a mount winding shaft 12,
It has a carbon ribbon supply shaft 14 for a carbon ribbon 13 for thermal transfer, a carbon ribbon winding shaft 15, and a rotation drive motor 16.

When the rotary drive motor 16 is driven, the label continuum 5 is supplied from the supply shaft 6 of the label continuum 5, and the carbon ribbon 13 for thermal transfer is supplied from the carbon ribbon supply shaft 14. A predetermined printing is performed on the label piece 4 of the mount 3 by supplying a printing signal.

[0007] The printed label continuum 5 includes a release plate 10
At this point, only the mount 3 is turned rearward, and the label piece 4 is peeled off from the mount 3.

The backing sheet 3 from which the label pieces 4 have been peeled off is taken up by a backing sheet take-up shaft 12, and the carbon ribbon 13 for thermal transfer is taken up by a carbon ribbon take-up shaft 15.

In general, the rotary drive motor 16 used for such winding drives the platen 8, the mount winding shaft 12, and the carbon ribbon winding shaft 15 all in rotation.

However, in terms of the diameter of the backing paper 3 wound on the backing paper winding shaft 12, the torque required for the rotation of the backing paper winding shaft 12 at the beginning of the winding is the maximum, and the diameter of the diameter between the beginning and the end of the winding is the largest. Since the difference in required torque increases due to the difference, there is a problem that a motor having a large power must be used as a whole in order to rotate the mount winding shaft 12.

As shown by the imaginary line in FIG. 5, the supply and take-up function of the label continuum 5 provided in the label printing apparatus 1 is provided by a separate supply and take-up mechanism 17 for the separate label continuity 5. In some cases.

Further, a separate mechanism such as a sticking mechanism 18 for attaching the label piece 4 may be additionally provided.

In the case of such a division or additional configuration, it is necessary to make the label printing apparatus 1 function as a single unit having a printing mechanism, and the problem of how to configure the transport mechanism of the label continuous body 5 is raised. is there.

FIG. 6 shows another conventional mechanism for transporting the label continuous body 5.

In the transfer mechanism 19, a pair of pressure rollers 20 are provided on the downstream side of the platen 8 instead of the sheet winding shaft 12 as shown in FIG. By pinching and rotating,
The mount 3 is to be transferred backward.

However, in the case of the transfer mechanism 19, there is a problem that the configuration itself becomes large.

[0017]

[Problems to be Solved by the Invention] The present invention has been made in view of the above-mentioned problems, and does not require rotation winding by a mount winding shaft when transferring a mount as a label printing device, and An object of the present invention is to provide a label continuum transfer mechanism of a label printing apparatus capable of securing a printing function as a label printing apparatus and transferring a mount sheet compactly without increasing the size of the whole.

[0018]

In other words, the present invention focuses on using the rotation of the platen of the printing mechanism for the transfer of the backing paper. The present invention relates to an apparatus frame and a continuous label in which a plurality of label pieces are temporarily attached to the backing paper. A printing mechanism having a print head and a platen for printing predetermined information on the label piece of the body, a drive mechanism for rotating and driving the platen, and peeling for peeling the label piece from the mount by turning only the mount. A peeling mechanism having a plate, and a label continuum transfer mechanism for a label printing apparatus, comprising: a swinging link having a cam operation portion swingably mounted on the apparatus frame around a swinging fixed shaft; and It is rotatably attached to the swing link and opens and closes at the part opposite to the cam operation part, with the backing paper feed driven roller arranged downstream of the peeling mechanism. Arm portion is formed, by operating the swinging link by opening and closing of the closing cam portion, and the axial center of <br/> centers of the mount feeding follower roller axis of the swing fixed shaft The connecting line is substantially orthogonal to the line connecting the center of the platen shaft center and the center of the shaft center of the backing feed roller.
When the backing paper feed roller contacts the position,
With the rotation of the platen, the backing roller
Position so that it abuts downstream from the abutted position
A press-contact operating mechanism that is transferred to be able to separate or press against the platen.

The press-contact operating mechanism can be constituted by an operation knob and a press-contact cam rod which is rotated by operating the operation knob.

Further, it is desirable that the backing paper feeding driven roller be in contact with the platen on the downstream side from the center axis of the platen.

[0021]

In the label continuum transfer mechanism of the label printing apparatus according to the present invention, the backing paper feed driven roller is directly pressed into contact with the platen without using a backing paper winding shaft or a pair of pressure contact rollers unlike the conventional transfer mechanism. With this configuration, the paperboard driven roller rotates in response to the rotation of the platen, and the paperboard sandwiched therebetween can be transferred to the downstream side.

As a mechanism for transporting the continuous label body, only the backing paper feed driven roller is pressed against the platen, so that the structure is very simple and the backing sheet is rolled like a conventional backing shaft. Since it is not a winding machine, a small rotating torque is required for the transfer.

Further, the label printing apparatus main body can transfer a label continuous body, and can be configured by dividing and supplying a label continuous body feeding / winding mechanism or by adding a label piece attaching mechanism. It is possible to confirm the performance of the apparatus itself, such as confirmation of printing and confirmation of transfer.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a label continuum transfer mechanism 30 of a label printing apparatus according to an embodiment of the present invention will be described with reference to FIGS. However, the same parts as those in FIGS. 5 and 6 are denoted by the same reference numerals, and detailed description thereof will be omitted.

FIG. 1 is a side view of a main part of a label continuous body transfer mechanism 30 of the label printing apparatus, and FIG. 2 is a plan view of the main part of the same. It has a link 31, a paper feed driven driven roller 32, and a pressure contact operating mechanism 35 including a pressure contact cam rod 33 and an operation knob 34.

However, as shown in FIG.
Are provided on the left and right in the traveling direction of the label continuum 5 and have the same configuration, and only one of them will be described below.

The oscillating link 31 is attached to the apparatus frame 2 so as to be able to oscillate, and more specifically, is oscillatable around an oscillating fixed shaft 36.

The oscillating link 31 is a roller supporting portion 31 for rotatably supporting the backing roller 32 for mounting sheet feed.
A, a center swing shaft portion 31B supported by the swing fixed shaft 36, and a leaf spring-shaped cam operating portion 31C opposed to the press-contact cam rod 33. The portion 31C is the swing shaft portion 31
B are integrated at right angles to each other.

The mounting sheet feeding driven roller 32 is rotatably mounted on the roller supporting portion 31 A of the swing link 31, and is disposed downstream of the peeling mechanism 11.

[0030] Note that as shown in FIG. 3, the relative positional relationship between the base sheet feed driven roller 32 and the platen 8 are axial center of the shaft center 36C and mount feed driven roller 32 of the swing fixed shaft 36 The line X connecting 32C to the platen 8
Downstream from said in <br/> mind 32C and position substantially Cartesian a line Y connecting the axial center 8C and mount feed driven roller 32 (in the figure, the position shown mount feed driven roller 32 by a dotted line) On the side, it is desirable that the backing roller 32 and the platen 8 be in contact with each other.

More specifically, for example, if the paper feed driven driven roller 32 is arranged at the position shown by the solid line, the swing link 31 does not escape in the direction opposite to the pressure contact with the rotation of the platen 8, and conversely. , Driven roller 3 for backing paper
2 can be urged in the pressing direction (see the solid arrow in the figure).

Conversely, for example, if the backing roller 32 for feeding the mount is arranged at the position indicated by the imaginary line, the swing link 31 escapes in the direction opposite to the press-contact with the rotation of the platen 8 (the imaginary line in the figure). As shown in the arrow), the pressing action between the backing sheet feeding driven roller 32 and the platen 8 is weakened, so that the function of nipping and transferring the backing sheet 3 is reduced.

As shown particularly in FIG. 2, a groove in the axial direction is formed in the backing roller 32 for feeding the backing sheet, and the backing sheet 3 is held therebetween by pressing against the platen 8. 3 can be transferred to the downstream side.

Instead of the axial groove, a knurl may be cut on the backing roller 32 for feeding the backing paper.

The pressing cam rod 3 of the pressing operation mechanism 35
Numeral 3 is provided over the apparatus frame 2 similarly to the swinging fixed shaft 36, and a flat cut 37 is formed over a predetermined circumferential angle in a portion of the swinging link 31 facing the cam operating portion 31C. Thus, the opening / closing cam portion 38 is formed.

FIG. 1 shows a case where the flat cut 37 is in full contact with the cam operating portion 31C. In this case, a slight gap is formed between the board feeding driven roller 32 and the platen 8. The mount 3 can be inserted and loaded.

FIG. 4 shows a case where the operation knob 34 is operated and developed by 180 degrees from the state shown in FIG.
8 shows a state in which the roller 8 is pressed against the platen 8 with a predetermined pressure by pressing the cam operation portion 31C to rotate the entire swing link 31 counterclockwise in the figure.

The mount 3 transferred to the downstream side by the pressure contact and the rotation of the platen 8 is guided by the guide plate 39 and discharged out of the machine.

In the label continuum transfer mechanism 30 of the label printing apparatus having such a configuration, the opening / closing cam 38 rotates the swing link 31 in the forward and reverse directions only by rotating the operation knob 34. The driven follower roller 32 can be moved toward and away from the platen 8.

That is, in the state shown in FIG. 1, the opening / closing cam portion 38 of the press-contact cam rod 33 does not press the cam operation portion 31C of the swing link 31, and the gap between the platen 8 and the base sheet feeding driven roller 32 The mount 3 can be loaded.

Next, the operation knob 3 is moved to the state shown in FIG.
4 is rotated by 180 degrees, the opening / closing cam portion 38 of the press-contact cam rod 33 presses the cam operation portion 31C of the swing link 31 to rotate the swing link 31 in the counterclockwise direction. The backing paper feed driven roller 32 is brought into pressure contact, and the backing paper feeding driven roller 32 is also driven by the rotation of the platen 8 in accordance with the printing operation, so that the backing paper 3 can be transferred.

Accordingly, the continuous label body 5 can be transported only by the main body of the label printing apparatus 1, and a conventional winding mechanism that requires a torque, such as the mount winding shaft 12 or a pair of pressing rollers 20, is not required. , Label printing device 1
It is possible to make the whole compact.

[0043]

As described above, according to the present invention, by opening and closing the opening / closing cam portion, the swing link is operated so that the backing roller for sheet feeding is moved toward and away from the platen.
Eliminates the need for a take-up mechanism such as a backing paper take-up shaft or pressure roller, allowing the label continuum to be easily transferred or mounted by opening and closing the opening and closing cams, making it possible to function as a separate label printing device. In addition, when the swing link is operated to separate or press the feed driven roller against the platen , the center of the axis of the swing fixed shaft
A line connecting the center of the shaft of the
The center of the Latin axis and the axis of the backing feed roller
The backing paper feed roller is located almost perpendicular to the line connecting the center.
When the roller comes in contact with the platen,
Downstream of the position where the driven roller
Moved so that it comes into contact with the platen
Alternatively, as the platen rotates, the oscillating link urges the backing roller for backing sheet feed in the direction of more pressing contact, so that the function of pinching and transferring the backing sheet is improved.

[0044]

[Brief description of the drawings]

FIG. 1 is a side view of a main part of a label continuous body transfer mechanism 30 of a label printing apparatus according to an embodiment of the present invention, showing a state where a swing link 31 and a platen 8 are separated from each other. is there.

FIG. 2 shows a label continuum transfer mechanism 3 of the label printing apparatus.
FIG.

FIG. 3 shows the backing sheet feeding driven roller 32 and the platen 8;
FIG. 4 is an explanatory diagram for illustrating a relative positional relationship with the image forming apparatus.

4 is a main part side view similar to FIG. 1, showing a state where the swing link 31 and the platen 8 are pressed against each other.

FIG. 5 is an overall schematic view of a conventional general label printing apparatus 1.

FIG. 6 is a schematic view of a main part of another conventional label continuous body transfer mechanism 19;

[Explanation of symbols]

REFERENCE SIGNS LIST 1 label printing device 2 device frame 3 strip-shaped backing sheet 4 label piece 5 label continuum 6 supply axis of label continuity 5 thermal print head 8 platen 8C center of platen 8 9 printing mechanism 10 release plate 11 release mechanism 12 paper winding Axis 13 Carbon ribbon for thermal transfer 14 Carbon ribbon supply axis 15 Carbon ribbon take-up axis 16 Rotary drive motor 17 Supply / rewind mechanism of label continuum 5 18 Sticking mechanism of label piece 4 19 Other transport mechanism of label continuum 5 REFERENCE SIGNS LIST 20 pair of pressure contact rollers 30 label continuity transfer mechanism of label printing device 31 swing link 31A roller support portion of swing link 31B swing shaft portion of swing link 31C cam operating portion of swing link 31 32 paper feed Driven roller 32C Center of driven paper feed driven roller 32 33 Contacting cam rod 34 Operation knob 35 Operation mechanism for press-contacting 36 Fixed axis for swing 36 C Center of fixed axis 36 for swing 37 Flat cut 38 Opening / closing cam section 39 Guide plate X Center 36 C of fixed axis 36 for swing and driven roller 32 for sheet feed Connecting the center 8C of the platen 8 and the paper feed driven roller 3
Line connecting the center 32C of 2

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-289434 (JP, A) JP-A-4-73175 (JP, A) JP-A-3-182377 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) B65C 9/18

Claims (1)

(57) [Scope of request for utility model registration] An apparatus frame, a printing mechanism having a print head and a platen for printing predetermined information on a label piece of a label continuum in which a plurality of label pieces are temporarily attached to a backing paper, and rotating the platen. A drive mechanism, and a peeling mechanism having a peeling plate that peels off the label piece from the mount by turning only the mount, and a label continuum transfer mechanism for a label printing apparatus, comprising: A swing link having a cam operating portion swingably mounted on a fixed shaft; a mount-feeding driven roller rotatably mounted on the swing link and disposed downstream of the peeling mechanism; and the cam. An opening / closing cam portion is formed at a portion facing the operation portion, and the swing link is operated by opening / closing the opening / closing cam portion.
To, axial line connecting the axial center of the center and the center of axis of the swing fixed shaft the mount feeding driven roller platen
The paper feed driven roller is located at a position substantially orthogonal to a line connecting the center of the paper feed roller and the center of the axis of the paper feed driven roller.
When the platen rotates, the mount
Downstream smell from position feed driven roller is the contact
And a press-contact operating mechanism which is moved to a position where it comes into contact with the platen so as to be able to separate or press against the platen.