JP3457776B2 - Label printer - Google Patents

Description

Description: BACKGROUND OF THE INVENTION [0001] The present invention relates to a roll-shaped label.
For blank labels affixed at regular intervals on the mount
And product name, rod number, barcode, delivery address, shipping source
Related to a label printer that prints various information such as
is there. [0002] For example, via a transport mechanism such as a belt conveyor.
Are placed on the line where goods are conveyed one after another,
The product name and the log are blank against the blank label affixed on the
Information, such as storage numbers, barcodes, destinations, and senders.
Label printers for printing are already known. [0003] In this type of label printer, at regular intervals.
A roll-shaped label mount with a blank label attached
Transport and label based on information entered from an external terminal.
Product name, rod number, barcode, delivery address, and shipping source
Etc., and print the label after printing.
Peeled one by one from the backing paper, and rolled the backing paper
We are cleaning. And it is peeled off from the label mount
Label is attached to the labeling section of the label printer.
Then, attachment to an article (object to be attached) is performed. Pasting section
Although not shown, the peeled label is compressed and emptied.
Air that is applied to articles in a non-contact manner by blowing air
Jet type, remove peeled label at tip of cylinder
Cylinder type, which is pressed against and affixed to goods at the tamping part,
After bringing the peeled label close to the article via the cylinder
To be blown off with compressed air and affixed to articles
A cut type or the like is used. By the way, this type of label printer is used for
The label to be printed is placed on a label
It is affixed at intervals and wound into a roll
Has more labels affixed to the label
Labels to reduce running costs.
The distance between each label is as small as possible.
The size is set to, for example, about 2 to 3 mm. However, the labels approach each other as described above.
Transport the label mount with a small label interval
When printing on each label is performed as shown in FIG.
As described above, the label 52 (5
2a) The rear end is transported to the peeling position P2 in front of the printing unit 51
Then, the unprinted label 52 (52
b) The intermediate position is the printing position of the printing unit 51 (for example,
(Corresponds to the location of the tropical zone of Le Head)
Marking on the label 52b only in the area from that position to the rear end
Characters cannot be written, and a mark is
A non-printing area E1 in which characters cannot be formed occurs. Because of this, the label
To print over the entire area of 52b, the label
After peeling off the screw 52a, as shown in FIG.
The leading end of the unprinted label 52b to be printed is
Until the label mount 53 is positioned before the printing position P1,
I needed to feed back. FIG. 4 shows a back feed mechanism for the label mount.
FIG. 2 is a side sectional view showing a schematic configuration of a label printer provided with the printer.
You. This label printer prints a label 52 at predetermined intervals.
The attached roll-shaped label mount 53 can be detachably attached.
Mount mounting portion having mount supply reel 54a for attaching
And a label mount 53 conveyed from the mount mounting portion 54
Each label 52 above is based on information from an external terminal.
A printing section 51 for performing desired printing, and a peeling position in front of the printing section 51
The label mount 53 from which the label 52 has been peeled off in the place P2
Take-up unit 55 having a take-up reel 55a for taking up
And a board for feeding and rewinding and transporting the label mount 53
A paper transport mechanism 56 and a housing 57 are provided inside the
ing. The mount winding section 5 on the bottom side in the housing 57
The label mount 53 is conveyed to the mount winding unit 55 side toward 5
That acts as a feed roller for the feed
Drive shaft 59 provided with a feed drive roller 58
Have been. The feed drive roller 58 has a feed
A driven roller that rotates in conjunction with the driving roller 58
When the feed tension roller 60 is in pressure contact
They are arranged opposite to each other. Printing on the bottom side inside the housing 57
Toward the part 51, the label mount 53 is attached to the mount mounting part 54 side.
A bag that operates as a feed roller for reverse feeding
For back feed with drive roller 61 for feed feed
The drive shaft 62 is arranged alongside the feed drive shaft 59.
I have. The back feed drive roller 61 includes a back feed
Driven roller that rotates in conjunction with the lead drive roller 61
Back feed tension roller 63
They are arranged facing each other in a state of touch. [0008] Feed drive shaft 59 and take-up reel 55
The center axis of a is the rotation of the motor 65 via the transmission belt 64.
It is connected to the turning shaft. Rotary shaft of motor 65 and winding reel
Between the feed drive shaft 59 and the central axis of the
To apply a constant tension to the center axis of the take-up reel 55a.
Tension roller 66 presses and contacts transmission belt 64
It is arranged. As a result, the motor 65 is driven.
When the rotational force is transmitted, the rotational force is fed through the transmission belt 64.
To the drive shaft 59 and the central axis of the take-up reel 55a.
The feed drive roller 58 and the take-up reel 55a
They are driven to rotate in the same direction. [0009] Feed drive shaft 59 and back feed
A relay belt 67 is wound around the drive shaft 62.
I have. In the middle position of the relay belt 67, each drive roller 5
Tension row for applying constant tension to 8,61
LA 68 is provided. Thereby, the drive of the motor 65 is performed.
When the feed drive shaft 59 is rotationally driven by the movement,
Drive shaft for back feed in conjunction with drive shaft 59 for feed
62 are driven to rotate in the same direction. The motor 6
5, drive rollers 58 fixed to the drive shafts 59 and 62,
61, tension rollers 60, 63, 66, 68, bell
The sheet transfer mechanism 56 is constituted by the
You. Here, the backing supply reel of the backing mounting portion 54
One end of the label mount 53 pulled out from the
Drive roller 61 for feed and tension for back feed
Peeling position in front of the printing unit 51 passing between the
At the position P2, it is folded back to the back side of the housing 57 at an acute angle,
Drive roller 58 and feed tension roller 60
And wound on the take-up reel 55a of the mount take-up unit 55
Attached. Then, separate driving is performed by driving the motor 65.
Each drive roller 58, 61 fixed to the driving shaft 59, 62
The label mount 53 rotates and is conveyed to the mount winding unit 55 side.
Then, the printed label 52 is one sheet from the label mount 53
Each is peeled off. With the label printer configured as described above,
Transports the label mount 53 and prints the desired label 52
Is performed, the roll-shaped label mount 53 is attached to the mount mounting portion 5.
4 is attached to the mount supply reel 54a, and the label mount 53 is attached.
Is wound around the take-up reel 55a of the mount take-up section 55.
In the fixed state, first, attach the label mount 53 to the mount mounting portion 5.
Feed control to supply the printing unit 51 from the side 4 is performed.
You. In this feed control, the motor 65 is driven.
Then, the rotation axis of the motor 65 is turned counterclockwise in FIG.
To rotate (forward). This rotational force is transmitted via the transmission belt 64.
And the center of the feed drive shaft 59 and the take-up reel 55a.
When transmitted to the shaft, the feed driving roller 58 and the winding
The reel 55a rotates counterclockwise in FIG. this
At the same time as the rotation of the feed drive shaft 59,
The drive shaft 62 also rotates in the same direction. This
The label mount 53 has one end wound around the take-up reel 55a.
It is transported while being wiped. Then, the label to be printed
The tip of the bell 52 is transported to the printing position P1 of the printing unit 51.
When the label mount 53 is transported, the printing unit 51
The desired print is made on the label 52. Then further
The label mount 53 is conveyed by driving the motor 65,
The printed label 52 is transported to the peeling position P2 and is not shown.
The label mount 53 is transferred to the printing unit
Back feed control for returning from 51 to the backing paper mounting portion 54 side
Done. In this back feed control, the motor 65
Is driven, the rotation axis of the motor 65 rotates clockwise in FIG.
Rotate (reverse) in the direction. This torque is transmitted by the transmission belt 64.
Through the feed drive shaft 59 and the take-up reel 55a.
When transmitted to the central shaft, the feed driving rollers 58 and
The take-up reel 55 rotates clockwise in FIG. this
At the same time as the rotation of the feed drive shaft 59,
The drive shaft 62 also rotates in the same direction. This
Then, the label mount 53 is returned to the mount mounting portion 54 side. This
The reverse rotation of the motor 65 is performed for the next label 52 to be printed.
Until the leading end of the printer reaches the printing position P1 of the printing unit 51.
It is. Then, the tip of the label 52 to be printed next is printed
When returning to the print position P1 of the section 51,
Control is performed, and desired printing on the label 52 is performed.
Is performed. [0014] However, the above structure
In a conventional label printer, the label mount 53 is
The feed driving roller 58 is used for back feeding.
Back feed separately from the feed drive shaft 59
Back feed drive on which a feed drive roller 61 is fixed.
The driving shaft 62 was required. Moreover, one motor 65
The rotational force is transmitted to the two drive shafts 59 and 62 and
Since it is configured to transmit to the central axis of the reel 55a,
The feed drive shaft 59 and the back feed drive shaft 62
Parts such as the relay belt 67 and the tension roller 68
Is indispensable, the component parts increase by that much,
This not only increases the cost but also complicates the structure. The surface accuracy of each drive roller 58, 61
Drive roller 5 while rotating drive shafts 59 and 62
This is obtained by polishing the surface of
The surface polishing of the rollers 58 and 61 is performed for each drive shaft 59 and 62.
Therefore, the drive fixed to the separate drive shafts 59 and 62
It is necessary to form the outer diameter of the moving rollers 58 and 61 to the same diameter.
Was difficult. Then, the feed driving roller 58
Outer diameter φA and outer diameter φB of back feed drive roller 61
Is different, the following problems occur. (1) In the case of φA> φB a) At the time of feeding: the transport amount of the label mount 53 is
Feed drive roller compared to feed drive roller 61
58 is larger, the back feed drive roller 6
1 serves as a brake when the label mount 53 is conveyed.
If the transport of the label mount 53 is continued in the state as it is,
If an extra load is applied to the motor 65 or the label mount 53
There is a possibility that an obstacle such as breakage may be caused. B) At the time of back feed: the label mount 53
The transport amount is larger than that of the back feed drive roller 61.
Since the drive roller 58 for feeding is larger, the peeling position P
2 and the feed drive roller 58, the label mount 53 is loosened.
The transfer of label mount 53 continues as it is.
If it is touched, the amount of slack in the label mount 53 will increase, preventing transport.
The label mount 53 cannot be stably conveyed. (2) In the case of φA <φB a) At the time of feeding: the transport amount of the label mount 53 is
Drive roller for back feed compared to drive roller 58
Since 61 is larger, the peeling position P2 and the feed drive
The label mount 53 is loosened between the rollers 58, and
If the transport of the label mount 53 is continued in the state of
The amount of slack in the backing sheet 53 increases and hinders conveyance, and
The paper 53 cannot be transported stably. B) At the time of back feed: the label mount 53
The transport amount is smaller than the feed driving roller 58
Since the feed drive roller 61 is larger,
A break when the drive roller 58 reversely feeds the label mount 53
And the conveyance of the label mount 53 continues as it is.
If it is disconnected, an extra load is applied to the motor 65,
There is a possibility that an obstacle such as the bell mount 53 being cut may be caused. On the other hand, for example, the feed driving roller 5
8 and the outer diameter of the back feed drive roller 61
Even if φB can be formed with the same diameter,
Is slightly loosened when set on the backing paper supply reel 54a.
The two drive rollers 5
8 and 61 are linked by one motor 65 to rotate at the same speed.
Then, the label mount 53 is transported without loosening.
As a result, looseness hinders conveyance, and the label mount 53 is
Could not be transported. As described above, in the conventional label printer,
In order to transport the label mount 53 forward and reverse,
Back separately from the drive shaft 59 having the drive roller 58 for
Requires drive shaft 62 with drive roller 61 for feed
However, there is a problem that the configuration is complicated. Moreover, labe
Unnecessary load is applied or loosen
The label mount 53 can be transported stably without
I couldn't let it. The present invention has been made in view of the above problems.
With fewer components and a simplified structure
The label mount can always be transported in a stable state.
It is intended to provide a label printer that can print. In order to achieve the above object,
The label printer according to the first aspect of the present invention includes a label printer.
A plurality of labels 6a attached to the mount 6 in close proximity to each other
At the predetermined printing position P1, and prints ahead of the printing position.
Position the label base so that the label printed at
In a label printer for transporting paper, the label mount is provided.
For transporting the paper forward or backward of the printing position.
A drive shaft 9 to which a force is transmitted, fixed to the drive shaft,
Feed rotating by power transmitted via drive shaft
Following the drive roller 18 for printing and the peeled printed label
Until the leading edge of the unprinted label reaches the printing position
When transporting the label mount in the backward direction of the printing position
Only while the power is transmitted by being connected to the drive shaft
The clutch disposed on the drive shaft via a directing clutch 15.
Backfeed drive with the same outer diameter as the feed drive roller
Roller 13 and the feeder so as to sandwich the label mount.
The label mount is disposed opposite to the drive roller for
So that it is conveyed forward or backward from the printing position.
For feed that rotates in conjunction with the feed drive roller
So as to sandwich the tension roller 19 and the label mount
Disposed opposite to the back-feed drive roller,
The label mount is conveyed to the rear of the printing position.
To rotate in conjunction with the back feed drive roller.
And a back feed tension roller 14
It is characterized by. In the above label printer, the label mount 6 is
The power for conveying the print position P1 in the forward direction is supplied to the drive shaft 9.
, The feed drive fixed to the drive shaft 9
The roller 18 rotates forward in conjunction with the rotation of the drive shaft 9. That
At this time, a drive roller for back feed provided on the drive shaft 9
The one-way clutch 13 is disengaged from the drive shaft 9.
Thus, power from the drive shaft 9 is not transmitted. This allows
The bell mount 6 is used only for the rotation of the feed drive roller 18.
In the direction where the more unprinted label 6a moves toward the printing position P1
Conveyed. At this time, the same as the feed driving roller 18
The back feed drive roller 13 having one outer diameter is provided on a label table.
Feeding drive without disturbing the transport of paper 6
Runs idle as the label mount 6 is transported by the rollers 18
I do. As a result, the label mount 6 keeps a constant carry amount.
It is transported stably in the upright state. And this label mount
6, the desired mark is printed on the label 6a at the printing position P1.
And the printed label 6a is positioned in front of the printing position P1.
Peeled off at location. The printed label 6a is peeled off from the label mount 6.
When released, the label mount 6 is conveyed backward in the printing position P1.
The power for feeding is transmitted to the drive shaft 9. This
The feed drive roller 18 fixed to the drive shaft 9
The rotation is reversed in conjunction with the rotation of the drive shaft 9. At that time, the drive shaft 9
Direction of the back feed drive roller 13 disposed in
The clutch 15 is connected to the drive shaft 9 and
Power is transmitted. And each was formed to the same outer diameter
Feed drive roller 18 and back feed drive roller
Roller 13 rotates at the same speed, and the label mount 6 is peeled off.
Unprinted label 6a following the printed label 6a
Is transported in a direction to return to the printing position P1. As a result,
The bell mount 6 is stably transported while maintaining a constant transport amount.
Sent. The transport of the label mount 6 is printed next.
Until the leading end of the unprinted label 6a reaches the printing position P1
Done. FIG. 1 shows a label pudding according to the present invention.
FIG. 2 is a side sectional view showing a schematic configuration of the label printer, and FIG.
FIG. 4 is a partially enlarged plan view of the mount carrier mechanism in FIG. This label printer is, for example, a belt
Lines in which articles are transported one after another via a transport mechanism such as a bear
On a roll-shaped label mount at regular intervals.
Product name and rod number against the blank label
Number, barcode, destination, shipping source, etc.
And a mount mounting portion 2 and a printing portion in a housing 1 forming a main body.
3, a mount winding unit 4, and a mount transport mechanism 5 are provided.
Has been established. The mount mounting portion 2 is provided at an upper portion in the housing 1.
Backing paper supply reel 2a rotatable about its own central axis.
have. At a predetermined interval,
A roll-shaped label mount 6 to which a label 6a is attached every time
Removably attached. The backing supply reel 2a is
1 is rotated clockwise so that the label mount 6
Is pulled out to supply the label mount 6 to the printing unit 3.
Will be The printing unit 3 is provided on the front side of the inner bottom of the housing 1.
For example, a thermistor having a tropical zone forming the print position P1.
The label head 3a and the platen roller 3b
Are arranged facing each other. The platen roller 3b is
Part of the outer circumference contacts the print position P1 of the thermal head 3a
Rotatable on the frame (not shown) in the housing 1
It is pivoted. In the printing section 3, the thermal head 3
By driving the tropics in (a) to generate heat,
It is pulled out from the backing paper supply reel 2a of the attachment section 2 and transported.
For the label 6a on the label mount 6, the external terminal device
Prints one sheet at a time based on the information
I have. Near the front side of the housing 1 on the platen roller 3b
In the position of, the label that has been printed by the printing unit 3
The label 6a from the label mount 6 with the transport of the label mount 6
A peeling claw 7 for peeling is provided. Although not particularly shown, the printing unit 3 is heated.
In the case of a transfer type, a thermal head 3a and a label
Roll-type transfer type or cassette removable type between the mount 6
Ink ribbon is supplied as a printing medium for
Printing is performed on the label 6a. The mount winding unit 4 is positioned above the printing unit 3.
And placed on the rear side of the inner bottom of the housing 1,
Label 6a that has been printed and peeled off with the transport of the label
It has a take-up reel 4 a for winding up the backing paper 6. The mount transport mechanism 5 is provided with a frame in the housing 1.
A motor as drive means fixed to a side plate (not shown)
8 and feed or back feed the label mount 6
And one drive shaft 9 to which the power of the motor 8 is transmitted.
The rotational force of the motor 8 to the drive shaft 9 and the central axis of the take-up reel 4a.
And a transmission belt 10 for transmitting the transmission belts respectively. The drive shaft 9 has a drive pulley 11 fixed to one end.
Of the label mount 6 between the printing unit 3 and the mount winding unit 4.
A frame (not shown) in the housing 1 located on the transport path
It is pivotally supported between the side plates. The transmission belt 10 includes a driving pulley 11 and a motor.
Between the rotation axis of the take-up reel 4a and the center axis of the take-up reel 4a.
Is being rotated, and the power of the motor 8 is applied to the center of the take-up reel 4a.
To the drive shaft 9 via the shaft and the drive pulley 11.
You. Between the rotation axis of the motor 8 and the center axis of the take-up reel 4a
Is fixed to the drive shaft 9 and the central axis of the take-up reel 4a.
The tension roller 12 for applying force is a transmission belt.
10 are arranged in pressure contact with each other. As shown in FIG. 2, at the center of the drive shaft 9
Is a label for returning the label mount 6 to the mount mounting section 2 side.
Backfeed drive that operates as a feed roller
A roller 13 is provided. Drive for back feed
The roller 13 has a driven
The tension roller 14 for back feed forming a roller
They are arranged facing each other in a state of being pressed against each other. The back feed drive roller 13 is driven
Label 6 with minimum length in the direction of the central axis parallel to axis 9
It is set smaller than the width of a. For back feed
The drive roller 13 is inserted into the drive shaft 9 and
Of the drive shaft 9 in the clockwise direction in FIG.
Only when it rotates, the power of the drive shaft 9 is transmitted and it rotates.
For example, a sprag type, roller type, cam type, etc. formed in a cylindrical shape
The one-way clutch 15 is provided. One-way clutch 1
5 has a length in the central axis direction parallel to the drive shaft 9.
For example, aluminum formed to the same length as the direction clutch 15
A metallic cylindrical roller 16 is fixedly provided. Tubular b
The outer circumference of the roller 16 has a length in the direction of a central axis parallel to the drive shaft 9.
A rubber roller having the same length as the cylindrical roller 16
17 is fixedly provided. A back-feed drive roller on the drive shaft 9
On both sides of the printer 13, the label mount 6 is placed via the printing unit 3.
Used as a moving roller for feeding the paper to the paper take-up unit 4 side
Feed drive rollers 18 that operate
It is fixed with a gap S therebetween. Drive row for each feed
Driven roller 18 that rotates in conjunction with the drive roller 18.
The feed tension roller 19, which is a roller
They are arranged opposite to each other in a state where they are set. Each feed drive roller 18 is provided on the outer peripheral surface.
Partly at least on both ends of label 6a of minimum size
So that it is fixed to the drive shaft 9. Drive for each feed
The roller 18 has an outer diameter φA having a back feed driving roller.
The outer diameter φB of the roller 13 is the same as the outer diameter φB. Each file
The drive roller 18 for the blade is inserted into the drive shaft 9, for example.
It has a cylindrical long roller 20 made of metal. Cylindrical long roller
On the outer periphery of the roller 20, the length in the axial direction is equal to the length of the cylindrical long roller 20.
A rubber roller 21 designed to be shorter than
ing. The rubber roller 21 has an inner end face having a cylindrical long row.
The cylindrical long roller 20 is flush with the inner end face of the roller 20.
And is fixed to the outer periphery of the cylindrical long roller 20.
The edge 20a is exposed. The outside portion, which is the exposed portion of the cylindrical long roller 20,
In the peripheral portion 20a, in the direction orthogonal to the central axis of the drive shaft 9,
A screw hole 22 is formed therethrough. These cylindrical lengths
The roller 20 is inserted from both sides of the drive shaft 9 and
The push screw 23 is screwed and the tip of the push screw 23 is connected to the drive shaft 9.
Is fixed to the drive shaft 9 by pressing the outer peripheral surface of the
You. In the gap S between the driving rollers 13 and 18,
Is arranged such that the collar member 24 is inserted through the drive shaft 9.
You. The collar member 24 is made of, for example, a slippery material such as Delrin.
Is made of a good material with low frictional resistance.
The end surface orthogonal to the shaft 9 is a one-way clutch 15 and a cylindrical long rotor.
Roller 20 is in contact with each end face. The feed driving roller 18 and the back
The outer diameters φA and φB of the feed drive roller 13 are the same.
First, the back-feed drive roller 13 is formed.
Into the center of the drive shaft 9 and then
The collar member 19 is inserted through the
In the state where the drive roller 18 for the
By rotating the drive shaft 9 around its own central axis, each drive roller
The polishing is performed by polishing the surfaces of 13 and 18.
Thus, the feed drive roller 18 and the back filter
The drive roller 13 is mounted on one drive shaft 9 and
By rotating the driving shaft 9 and polishing the surface, each drive roller 1
The outer diameters φA and φB of 8, 13 are precisely molded to the same diameter.
be able to. Here, the sheet is pulled out from the backing paper supply reel 2a.
One end of the printed label mount 6 is connected to the drive row for back feed.
Between the roller 13 and the back feed tension roller 14
Through the peeling claw 7 located a predetermined amount ahead of the printing unit 3 through the housing.
A drive roller for feeding, which is bent at an acute angle to the back side of the body 1
18 and the feed tension roller 19
It is wound around the take-up reel 4a. And each drive row
The label mount 6 is rotated by the rotation of the
Side, the printed label 6a becomes the label mount 6
With the peeling claw 7 one by one from the label mount 6 with the transport of
It is designed to be more detached. With the label printer configured as described above,
Transports the label mount 6 and prints the desired print on the label 6a.
When performing, the roll-shaped label mount 6 is attached to the mount
Attach it to the paper supply reel 2a and mount one end of the label mount 6
A state in which the paper is wound around the take-up reel 4a of the paper take-up section 4 and fixed.
First, the label mount 6 is printed from the mount supply reel 2a.
Feed control for supply to the unit 3 is performed. In this feed control, the motor 8 is driven.
As a result, the rotation shaft of the motor 8 rotates counterclockwise in FIG.
Turn (forward). This rotational force is transmitted via the transmission belt 10
When transmitted to the drive shaft 9 and the central axis of the take-up reel 4a,
The feed drive roller 18 and the take-up reel 4a are
Rotates counterclockwise. At this time, back feed
The one-way clutch 15 for the drive roller 13 is
Drive roller 13 for back feed.
Is not transmitted to the motor. This allows
Back feed drive having the same diameter as the feed drive roller 18.
The moving roller 13 includes a feed driving roller 18 and a take-up roller.
Empty as the label mount 6 is conveyed by the rotation of the
Go around. Therefore, the drive roller for back feed
13 acts as a brake when transporting the label mount 6
The label mount 6 is kept at a constant transport amount.
While one end is wound on the take-up reel 4a in the leaned state,
Transported. At that time, the label on the backing paper supply reel 2a
The looseness of the label mount 6 that occurs when the mount 6 is set
Removed in a direction that gradually disappears as the bell mount 6 is transported
And wound around the take-up reel 4a. Next, the object to be printed is controlled by the above-described feed control.
The leading end of the label 6a is the printing position P1 of the printing unit 3,
That is, when transported to the tropical zone of the thermal head 3a,
With the thermal head 3a accompanying the transport of the label mount 6
The desired print is made on the label 6a. After that,
The label mount 6 is moved to the take-up reel 4a side by driving the
The transported and printed label 6 a is peeled off by the peeling claw 7.
Is transferred to a sticking section (not shown), the label mount 6
Back feed system for returning the paper from the printing unit 3 to the mount mounting unit 2 side
Your will be done. In this back feed control, the motor 8
And the rotation axis of the motor 8 is turned clockwise in FIG.
When rotating (reverse rotation), this rotational force is transmitted via the transmission belt 10.
And transmitted to the drive shaft 9 and the central axis of the take-up reel 4a.
At this time, the one-way clamp of the back feed drive roller 13 is performed.
The latch 15 is connected to the drive shaft 9 and
The drive roller 13 for the drive
The torque of the motor 8 is transmitted. As a result, the back fee
The center axes of the drive roller 13 and the take-up reel 4a are shown in FIG.
Rotates clockwise. At this time, the drive shaft 9
The feed drive roller 18 is used as a back feed drive roller.
Since it is formed to have the same diameter as the moving roller 13,
In the same direction in conjunction with the rotation of the
Spin at speed. Thereby, the label mount 6 is transported.
Returning to the mount mounting part 2 side with the feeding amount kept constant
You. The reverse transfer of the label mount 6 by the motor 8 is performed as follows.
The tip of the label 6a printed on the printing section 3 is the printing position P of the printing section 3.
It is performed until 1 is reached. Then, the label to be printed next
The tip of the bell 6a is returned to the printing position P1 of the printing unit 3.
Then, the above-described feed control is performed again, and the label 6a is
The desired printing is performed. Therefore, according to the above-described label printer,
Then, a feed drive for winding and transporting the label mount 6 is provided.
The moving roller 18 and a bag for feeding the label
The drive roller 13 for feed feed also serves as one drive shaft 9
And it is for back feed
The drive roller 13 is provided only at the center of the drive shaft 9,
On both sides it covers the width of the smallest label 6a
Two feed drive rollers 18 are arranged on the drive shaft 9
Configuration for transporting the label mount 6
Minimal parts required, simplified configuration and low cost
A label printer can be realized. A feed drive row disposed on the drive shaft 9
And the back feed drive roller 13
The outer diameters φA and φB are formed to the same diameter,
Drive roller 13 feeds back the label mount 6
When connected to the drive shaft 9 only when the power of the motor 9 is transmitted
Since the configuration includes the one-way clutch 15
Extra tension was applied to the mount 6 to apply a load to the motor 9
The paper is supplied without loosening the label paper 6
After setting the label mount 6 on the reel 2a or on the label 6a
The label carrier 6 always keeps a constant transport amount even during the printing operation of
It can be stably transported in an upright state. As described above, the label of the present invention is
According to the linter, the label that has not been printed moves to the printing position.
The print position of the bell mount has been transported forward or peeled off
The unprinted label following the printed label returns to the print position.
For transporting the label mount back
Two types of drive rollers with the same outer diameter (feed drive roller
Roller, back feed drive roller) on one drive shaft
It is also used to carry the label mount to the rear of the print position.
Power is transmitted by connecting to the drive shaft only when feeding
With a reverse clutch on the back feed drive roller
Therefore, the number of parts is reduced compared to the past, and the configuration is simplified.
And apply extra tension to the label mount to load the motor.
Without loosing or sagging.
Bell mount can be transported.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side sectional view showing a schematic configuration of a label printer according to the present invention. FIG. 2 is a partially enlarged plan view of a mount transport mechanism of the label printer. FIG. 4B shows a state in which the label has been transported to the peeling position. FIG. 4B shows a state in which the label to be printed next has been transported back to the printing position. FIG. EXPLANATION OF SYMBOLS 6: Label mount, 6a: Label, 9: Drive shaft, 13: Back feed drive roller, 14: Back feed tension roller, 15: One-way clutch, 18: Feed drive roller, 19: Feed Tension roller,
P1: printing position, P2: peeling position.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B65C 9/46 B41J 15/16 B65C 9/42 G09F 3/00 B41K 3/00

Claims (1)

(57) Claims 1. A predetermined printing position (P) is assigned to each label (6a) attached to a plurality of labels close to each other on a label mount (6).
In a label printer which performs printing in 1) and conveys the label mount so that a printed label is peeled off at a position in front of the print position, the label mount is conveyed forward or backward of the print position. A drive shaft (9) to which power is transmitted, a feed drive roller (18) fixed to the drive shaft and rotated by the power transmitted through the drive shaft, A one-way clutch that is connected to the drive shaft to transmit the power only when the label mount is conveyed backward in the printing position until the leading end of an unprinted label following the label reaches the printing position; 15) A back feed drive roller (13) having the same outer diameter as the feed drive roller disposed on the drive shaft via
And disposed in opposition to the feed drive roller so as to sandwich the label mount, in conjunction with the feed drive roller so that the label mount is conveyed forward or backward of the printing position. A rotating feed tension roller (19), disposed opposite to the back feed drive roller so as to sandwich the label mount, and the back so that the label mount is conveyed backward in the printing position. A label printer comprising a back feed tension roller (14) that rotates in conjunction with a feed drive roller.