JP2007216977A - Label issuing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a label issuing apparatus which gives a print roller a stable grip on a pasteboard carrying labels pasted thereon to carry out a highly precise printing process. <P>SOLUTION: A measuring printer 1 is the label issuing apparatus operating in such a way that a label sheet LS is pulled out of a label storage unit 31 by transfer rollers 43 and 44, the label storage unit 31 carrying a roll formed by rolling the elongated label sheet LS bearing a plurality of labels L pasted thereon at given intervals, and is transferred to a print head 41 arranged counter to a print roller 42, where the print head 41 carries out a printing process on the labels L, and then is transferred to a label winding unit 32, which winds up the label sheet LS stripped of the labels L. The transfer speed of the transfer rollers 43 and 44 arranged upstream from the print roller 42 is determined to be slower than the transfer speed of the print roller 42. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a label issuing device that prints information such as the price of a product while conveying a plurality of labels attached to a long mount.

  2. Description of the Related Art Conventionally, in a supermarket or the like, a label issuing device is used to measure the price of a product corresponding to its weight after weighing the product such as food. In this label issuing device, the label is sandwiched between the print roller disposed opposite to the print head while conveying a plurality of labels attached to the wound long sheet (mounting paper). Thus, desired information is printed.

For example, Patent Document 1 discloses a brake device that applies a brake during conveyance to a long sheet with a label attached thereto in such a label issuing device.
According to this, since the brake can be reliably applied when the openable / closable case door is closed, the conveyance of the label sheet is stabilized and the printing position on the label sheet is prevented from being shifted. be able to.
Japanese Utility Model Publication No. 5-13695 (published on April 12, 1993)

However, the brake device mounted on the conventional label issuing device has the following problems.
That is, in the label issuing device disclosed in the above publication, the tension of the label sheet being conveyed by the brake device is applied, but the conveyance roller pair is provided on the downstream side of the brake device. The braking force applied to the label sheet is absorbed, and it is difficult to convey the label sheet while securing a sufficient grip force at the print roller portion.

In recent years, with the increasing sophistication of characters and designs to be printed on labels, it has become particularly important to stabilize the conveyance of the label sheet at the print roller portion disposed opposite the print head. With the conventional configuration, it has been difficult to stably perform high-precision printing processing.
SUMMARY OF THE INVENTION An object of the present invention is to provide a label issuing device that can stably apply a gripping force on a printing roller of a base sheet to which a label is attached, and perform high-precision printing processing.

  A label issuing label issuing device according to a first invention is a label issuing device that performs a printing process on a label while transporting a plurality of labels attached to a mount, and includes a print head, a printing roller, and a transport And a pair of rollers. The print head performs a printing process on the label. The print roller is disposed at a position facing the print head, and conveys the mount in a predetermined direction while the mount is wound. The conveyance roller pair is arranged upstream of the printing roller, conveys the label together with the mount in a predetermined direction, and has a conveyance speed lower than that of the printing roller.

  Here, in a label issuing device that performs a printing process on a plurality of labels attached to a mount by a print head arranged opposite to the print roller, the print roller is disposed on the upstream side with respect to the conveyance speed. The relationship with the conveyance speed in the conveyance roller pair is defined as follows. That is, the conveyance speed by the conveyance roller pair arranged on the upstream side is configured to be smaller than the conveyance speed of the printing roller.

In recent years, with the diversification of label printing processing, characters and the like (for example, QR codes) printed on labels have become complicated and sophisticated. For this reason, in order to perform highly accurate printing processing on the label by the print head, it is necessary to stabilize the transport of the mount with a sufficient gripping force on the mount being transported by the print roller.
In the label issuing device of the present invention, the relationship between the conveyance speeds of the printing roller and the conveyance roller pair disposed upstream thereof is set as described above.

  Accordingly, it is possible to always apply an appropriate tension to the mount between the print roller and the conveyance roller pair. Therefore, the contact pressure (grip force) of the mount with respect to the printing roller around which the mount is wound can be increased, and the transport of the mount can be stabilized. As a result, for example, a high-precision printing process such as a QR code can be performed, and the brake device disposed on the upstream side of the conventional transport roller is not necessary, so that the configuration can be simplified. .

A label issuing device according to a second invention is the label issuing device according to the first invention, wherein each of the transport rollers included in the transport roller pair is smaller than the diameter of the print roller.
Here, each roller is formed so that the diameter of the conveying roller constituting the conveying roller pair is smaller than the diameter of the printing roller.
Thereby, even when the conveyance roller and the printing roller constituting the conveyance roller pair are rotated at the same rotational speed by the same drive source, for example, the circumferential speed of the conveyance roller pair is made smaller than the circumferential speed of the printing roller. Can do. For this reason, the rotation speed of the conveyance roller and the rotation speed of the printing roller can be made the same, and in order to provide a difference in the conveyance speed of both rollers, the drive speed is separated or the rotation speed is changed via a gear or the like. There is no need to do. As a result, with a simple configuration, a desired conveyance speed difference between the conveyance roller pair and the printing roller can be easily formed, so that the printing paper can be stably conveyed in a state where the mount is sufficiently gripped with respect to the label. Printing processing can be performed.

A label issuing device according to a third invention is the label issuing device according to the second invention, wherein the conveying roller has a diameter of 1.0 to 5.0% smaller than the printing roller.
Here, the diameter of the conveying roller constituting the conveying roller pair is formed so as to be smaller than the above range with respect to the diameter of the printing roller.
As a result, a slight difference can be provided between the conveyance speed by the printing roller and the conveyance speed by the conveyance roller pair, so that the tension of the mount between the conveyance roller pair and the printing roller can be kept at an appropriate level. it can. As a result, by increasing the contact pressure (grip force) of the mount with respect to the print roller, it is possible to perform the printing process while stably transporting the mount.

A label issuing device according to a fourth invention is the label issuing device according to any one of the first to third inventions, and is disposed in the vicinity of the printing roller, and the mount is applied to the printing roller. An auxiliary roller for guiding in the contact direction is further provided.
Here, for example, an auxiliary roller is provided near the downstream side of the printing roller to guide the mount in a direction in which it contacts the printing roller.

  As a result, while increasing the contact pressure (grip force) on the printing roller with the above configuration, the grip area of the mount on the printing roller can be further increased by increasing the contact area of the mount on the printing roller with the auxiliary roller. The transport of the mount can be further stabilized.

A label issuing device according to a fifth invention is the label issuing device according to any one of the first to fourth inventions, wherein the conveying rollers constituting the conveying roller pair are made of a material whose surface has a large frictional resistance. Is formed.
Here, for example, the surface of the conveying roller constituting the conveying roller pair is formed of a material having a high frictional resistance such as rubber.
As a result, compared to the conventional configuration in which the surface of the conveyance roller on the pressing side of the conveyance roller pair is formed of a resin material, the force for gripping the label and mount by the conveyance roller pair is increased, and the conveyance roller pair The brake effect can be obtained with certainty.

  According to the label issuing device of the present invention, the contact pressure of the mount with respect to the print roller around which the mount is wound is increased to stabilize the transport of the mount, thereby enabling high-precision printing processing.

A weighing printer (label issuing device) 1 according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 9B.
The “upstream side” and “downstream side” used in the following description are “upstream side” and “downstream side” in a state in which the label sheet LS is conveyed in the forward direction wound by the label sheet winding unit 32. ”Respectively.

[Configuration of Weighing Printer 1]
The weighing printer 1 obtains data on the weight or number of products from the weighing unit 2 or another system, and a fixed unit price of the product and a rough unit price for the product are pasted on a long label sheet (mounting sheet) LS. As shown in FIG. 1, the device for printing / issuing the label L includes a measuring unit 2, a main body unit 3, a liquid crystal monitor 4, and an operation panel 5.

The weighing unit 2 is arranged in front of the weighing printer 1 and measures a product to be affixed with the issued label L.
The main body 3 is disposed at a position adjacent to the weighing unit 2 and performs a desired printing process based on the weight of the product weighed in the weighing unit 2. A label issuing port 3a provided with a peeling plate 46 (see FIG. 6) for peeling the printed label L from the label sheet LS is provided on the front surface portion of the main body 3. Various members stored in the main body 3 will be described in detail later.

The liquid crystal monitor 4 is a touch panel monitor attached to the upper part of the main body 3 and displays various screens for prompting the operator to perform operations.
The operation panel 5 is arranged on the upper surface of the main body unit 3, and includes a call key for calling various data related to the selected product, a numeric keypad for selecting the product, and a product name by directly touching the product. A PLU (Price Look Up) key for calling up data is provided. Further, when the operation panel 5 is opened when the roll body of the label sheet LS is mounted, the operation panel 5 is in contact with the printing unit 33 as shown in FIG. On the other hand, when it is set after the roll body of the label sheet LS is set, as shown in FIG. It is supported by the frame 3b on the main body 3 side. Thus, by arranging the operation panel 5 on the upper part of the printing unit 33, the width of the conventional apparatus can be reduced. Further, by supporting the operation panel 5 by the frame 3b, it is possible to prevent the load due to the key operation from being transmitted to the printing unit 33 and to prevent the printing accuracy from being lowered.

[Internal configuration of main body 3]
As shown in FIGS. 2 and 3, the main body 3 stores therein a control unit 20 and a label issuing unit 30 in order to perform printing processing while conveying the label sheet LS described above in a predetermined direction. is doing.
(Control unit 20)
The control unit 20 includes a microcomputer having a CPU, a RAM, a ROM, and the like, and is connected to the weighing unit 2, the liquid crystal monitor 4, the operation panel 5, and the like. Further, the control unit 20 includes a memory (storage unit) 21 in which a product master 21a that is a bundle of data related to each product is stored, and a calculation unit 22 that performs calculations using a CPU or the like. Further, the control unit 20 controls the conveyance of the label sheet LS by the conveyance mechanism 34 included in the label issuing unit 30.

  Further, the weight data of the product as the measurement result is transmitted to the control unit 20 from the weighing unit 2 that measures the product. The weighing printer 1 according to the present embodiment employs a system configuration in which the weighing unit 2 is connected to the label issuing device as shown in FIG. 1 and the like. For example, a weighing unit having a product weighing function is included in the device. A built-in system configuration is also possible. In addition, as shown in FIG. 2, the weighing unit 2 may not be directly connected to the apparatus, but product weight data may be input to the apparatus via another system. In addition, as long as there is no dispersion | variation in a weight, it is also possible to memorize | store the weight of goods beforehand corresponding to goods.

(Label issuing section 30)
As illustrated in FIGS. 2 and 3, the label issuing unit 30 includes a label storage unit 31, a label sheet winding unit 32, a printing unit 33, and a transport mechanism 34.
(Label storage unit 31)
The label storage unit 31 supports the label sheet LS by mounting a portion of the paper tube LT of the roll body of the long label sheet LS on which a plurality of labels are continuously attached to the mounting shaft 31a. . As shown in FIG. 4, the label storage unit 31 includes a roll guide 35 a that is attached to the side wall surface of the main body 3 so as to be rotatable about a rotation shaft 35 b.

The roll guide 35a is disposed close to a position where the tip end portion opposite to the rotation shaft 35b overlaps with a part of the side of the paper tube LT existing in the center portion of the roll body of the label sheet LS in a side view. Thus, the paper tube LT is prevented from falling off the mounting shaft 31a.
(Label sheet winding unit 32)
The label sheet take-up unit 32 is pulled out from the label storage unit 31 and conveyed, and the label sheet LS from which the label L has been peeled off at the label issuing port 3a is taken up by the take-up shaft 32a.

  As shown in FIG. 5, the take-up shaft 32a is connected to the drive gear 42a of the print roller 42 and the drive gear 44a of the transport roller 44 via a gear unit 45 constituted by a plurality of drive gears 45a, 45b, 45c, 45d. And is rotationally driven by a drive source common to the print roller 42 and the transport roller 44 via drive gears 45a to 45d. The take-up shaft 32a has a mechanism in which a rotational drive is transmitted only in the take-up direction of the label sheet LS by a one-way clutch (not shown) and rotates in the direction opposite to the take-up direction. Further, when the braking force is applied to the rotational driving force in both the winding direction and the opposite direction to the winding shaft 32a, and when a torque exceeding a predetermined value is applied to the winding shaft 32a, the winding shaft 32a is A torque limiter that rotates while sliding is provided. As a result, even when the winding diameter of the label sheet LS on the winding shaft 32a changes, the label sheet can be rotated at a substantially constant speed by appropriately rotating the winding shaft 32a according to the winding diameter. LS can be wound up.

(Print unit 33)
As shown in FIGS. 3 and 6, the print unit 33 includes a print head 41 and a print roller 42 disposed close to a position facing the print head 41. In the printing unit 33, the printing process is performed by the printing head 41 on the label L attached to the label sheet LS conveyed while being in contact with the printing roller 42.

The print head 41 is a thermal head that performs a printing process while contacting the label sheet LS from above in a state where the label sheet LS conveyed by the conveyance mechanism 34 is sandwiched between the print roller 42.
The printing roller 42 is a roller whose surface is formed of a rubber material and has a diameter of 17.5 mm. Further, as shown in FIGS. 3 and 6, the label roller LS is wound around the printing roller 42 so that the conveyance direction changes in the printing roller 42. For this reason, when the printing process is performed, the printing process is performed by the print head 41 disposed so as to be gripped while the label sheet LS is in contact with the printing roller 42 in a band shape.

(Conveying mechanism 34)
As shown in FIG. 3, the transport mechanism 34 has a pair of transport rollers constituted by transport rollers 43 and 44 arranged on the upstream side of the printing unit 33. Then, the transport mechanism 34 uses the transport rollers 43 and 44 to pull out the label sheet LS from the roll body wound in a roll shape, while winding the label sheet LS via the print position directly below the print head 41. It is conveyed in a predetermined direction to the label sheet take-up unit 32 to be taken. Further, the transport mechanism 40 is controlled by the control unit 20 described above for transport conditions such as a transport direction and a transport speed.

  Similarly to the printing roller 42, the transport rollers 43 and 44 are rollers having a surface formed of a rubber-based material and a diameter of 17.0 mm. The conveying roller 43 is a driven roller that is disposed close to the conveying roller 44 and applies an appropriate tension to the label sheet LS by pressing the label sheet LS from above. On the other hand, the conveyance roller 44 is a drive roller that conveys the label sheet LS in a predetermined direction by rotating the label sheet LS sandwiched between the conveyance roller 43.

  Here, as described above, when the printing roller 42 arranged at the printing position by the printing head 41 and the conveying rollers 43 and 44 arranged upstream thereof are compared, the diameter of the printing roller 42 is 17.5 mm. On the other hand, the diameters of the transport rollers 43 and 44 are both 17.0 mm. As shown in FIG. 5, the drive side printing roller 42 and the transport roller 44 receive a rotational driving force from a common driving gear 45a. For this reason, a difference occurs between the conveyance speed of the printing roller 42 and the conveyance speed of the conveyance roller 44 according to the ratio of the diameters of the rollers.

Specifically, there is a difference in diameter of 0.5 mm between the printing roller 42 (diameter 17.5 mm) and the conveying roller 44 (diameter 17.0 mm), that is, a difference of about 3.0%. Similarly, a difference of about 3.0% occurs in the conveyance speed (circumferential speed) of the rollers 42 and 44.
Accordingly, the transport roller 44 having a diameter smaller than that of the print roller 42 transports the label sheet LS at a speed slower than the transport speed of the print roller 42. Therefore, as illustrated in FIG. In the upstream direction where the roller 44 is disposed, a greater tension is generated on the label sheet LS than in the conventional configuration in which the printing roller and the conveyance roller having the same diameter convey at the same peripheral speed. For this reason, since the pressure with which the label sheet LS abuts against the printing roller 42 can be increased, the printing process can be performed while firmly gripping the label sheet LS with the printing roller 42. As a result, it becomes possible to stabilize the conveyance of the label sheet LS as compared with the prior art and to carry out a highly accurate printing process such as a QR code.

  Here, from the viewpoint of increasing the tension of the label sheet LS between the printing roller 42 and the conveyance rollers 43 and 44, the label roller LS is arranged above the conveyance roller pair arranged on the upstream side of the printing roller 42. It is also important to manage the pressing force of the holding-side transport roller 43. However, as shown in FIG. 8, when the pressing force of the transport roller 43 is too small, the label sheet LS slips on the surface of the upstream transport rollers 43 and 44, and the print roller 42 has a sufficient grip force. Since it cannot be obtained, the conveyance amount in the printing roller 42 becomes smaller than the theoretical conveyance amount. On the other hand, even when the pressing force by the conveying roller 43 is too large, the tension generated in the label sheet LS becomes too large and the label sheet LS slips on the printing roller 42, and the conveying amount on the printing roller 42 is the theoretical conveying amount. Will be less than. For this reason, in addition to the difference in the conveyance speed between the printing roller 42 and the conveyance rollers 43 and 44 described above, the pressing force by the conveyance roller 43 (arrangement of the conveyance rollers 43 and 44) has a sufficient gripping force on the printing roller 42. Therefore, it is more preferable to set an appropriate state so that the transport amount matches the theoretical transport amount.

<Procedure for label issuance>
In this weighing printer 1, for various products in the product master 21a (see FIG. 2), the price is set based on the weight and quantity (the number of single items included in the product) as a reference, the weight, etc. Regardless of the sales form such as a flat-rate sales form in which products are sold at a fixed price regardless of the label L to be attached to the product is issued. Below, the procedure of the label issuing process when the fixed amount sales form is selected in the weighing printer 1 will be described.

When a flat-rate sale is selected according to a menu displayed on the liquid crystal monitor 4 and a product is further selected, for example, a screen as shown in FIG. 1 is displayed. Here, the special price mode is selected and the sales price (fixed amount) is entered for the product name “Domestic beef peach sliced from Hokkaido” with the call number 1.
The sales price is input using the numeric keypad of the operation panel 5 or the like. For example, if one pack is sold at a uniform fixed amount of 360 yen, “360” is entered.

  The special price mode is selected from “None”, “M special price”, “Special unit price”, and “−%”. “None” is selected when a product is sold at a price without discount. “M special price” is selected when the product is a special sale item and the label is not printed with the degree of discount (degree of discount). “Special unit price” is selected when the product is a special sale product and the special sale unit price is printed on the label together with the special sale price. “−%” Is selected when the product is a sale item and the discount rate of the sale price with respect to the normal price is printed on the label.

The sales price and the special price mode input here are stored in a product-specific file in the product master 21a. This product-specific file stores information for each product such as a call number, product name, and normal unit price. The call number is a code used when data of each product is read from the product master 21a, and the product information is stored for each call number.
When “None”, “M special price”, and “Special unit price” are selected when the special price mode is selected, the corresponding labels are printed and issued by the print head 41 of the label issuing unit 30.

[Features of weighing printer 1]
(1)
The weighing printer 1 according to the present embodiment transports a label sheet LS from a label storage unit 31 on which a roll body formed by winding a plurality of labels L attached to a long label sheet LS at predetermined intervals is mounted. A label issuing device that performs the printing process by the print head 41 disposed opposite to the print roller 42 while being pulled out and conveyed by the rollers 43 and 44, and winds up the label sheet LS from which the label L has been peeled off at the label sheet winding unit 32. Therefore, as shown in FIG. 6, the conveyance speed of the conveyance rollers 43 and 44 arranged on the upstream side of the printing roller 42 is set to be slower than the conveyance speed of the printing roller 42.

  As a result, the label sheet LS conveyed between the printing roller 42 and the conveying rollers 43 and 44 is applied with a pulling force toward the upstream side. The label sheet LS conveyed between the two is always in an appropriate tension state. For this reason, the contact pressure between the label sheet LS wound around the print roller 42 and the print roller 42 increases, so that the label sheet LS is firmly gripped by the print roller 42 disposed opposite to the print head 41. A stable printing process can be performed. Therefore, even when the print head 41 performs a printing process such as a complicated two-dimensional barcode such as a QR code, an apparatus that can cope with the printing process by performing a high-precision printing process can be provided.

Furthermore, by providing a difference in the conveyance speed between the printing roller 42 and the conveyance rollers 43 and 44, the brake device provided in the conventional label issuing device is not necessary, so that the configuration can be simplified.
(2)
In the weighing printer 1 of the present embodiment, as shown in FIG. 6, the diameter of the printing roller 42 is set to 17.5 mm, whereas the diameters of the transport rollers 43 and 44 are set to 17.0 mm.

  As a result, even when both the rollers 42 and 44 are rotationally driven at the same gear ratio by using a common drive source and drive gear for rotationally driving the print roller and the transport roller 44, the transport speed at the transport rollers 43 and 44 is printed. It can be made lower than the conveying speed in the roller 42. As a result, the label sheet LS transported between the print roller 42 and the transport rollers 43 and 44 can be transported in a state where a predetermined tension is applied. A highly accurate printing process can be performed on the label in a gripped state.

(3)
In the weighing printer 1 of the present embodiment, as described above, the diameter (17.0 mm) of the transport rollers 43 and 44 is about 3.0% smaller than the diameter (17.5 mm) of the print roller 42. Is set.
As a result, a slight (about 3.0%) difference is generated in the conveyance speed between the rollers 42 and 44, so that the label sheet LS conveyed between the printing roller 42 and the conveyance rollers 43 and 44 is always used. An appropriate tension can be stably applied.

(4)
In the weighing printer 1 of the present embodiment, of the transport rollers 43 and 44, the press-side transport roller 43 disposed above is formed of a rubber-based material.
As a result, an appropriate frictional force can be generated between the conveyance roller 43 and the label sheet LS, and therefore, the occurrence of slippage of the label sheet LS on the conveyance rollers 43 and 44 side is reduced, which is more stable than before. The label sheet LS can be conveyed.

[Other Embodiments]
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of invention.
(A)
In the above embodiment, the contact pressure (grip force) of the label sheet LS on the print roller 42 is increased by slightly lowering the transport speed on the upstream transport rollers 43 and 44 than the transport speed on the print roller 42. Explained with an example. However, the present invention is not limited to this.

For example, as illustrated in FIG. 10A, an auxiliary roller 48 that guides the label sheet LS being conveyed in a direction in which the label sheet LS is in contact with the print roller 42 may be disposed close to the downstream side of the print roller 42. Good.
In this case, as shown in FIG. 10B, in addition to the increase in the contact pressure against the print roller 42 described above, the contact area between the label sheet LS and the print roller 42 guided by the auxiliary roller 48 is increased. Therefore, the mount sheet can be gripped in the printing roller 42 in a more stable state. As a result, the conveyance of the label sheet LS can be further stabilized and more accurate printing processing can be performed.

(B)
In the above embodiment, the diameter of the transport rollers 43 and 44 is smaller than that of the print roller 42, so that the transport speed of the transport roller pair (transport rollers 43 and 44) is slower than the transport speed of the print roller 42. Explained and explained. However, the present invention is not limited to this.

For example, a rotational driving force is transmitted through a plurality of gears between a driving source that drives the printing roller and the conveying roller and each roller, and there is a slight difference between the rotational speed of the printing roller and the conveying roller. By setting, a difference in conveyance speed between both rollers may be formed.
Even in this case, since the tension of the mount wound around the print roller can be made larger than before, the grip force of the mount on the print roller can be increased and the mount can be stably conveyed to achieve high accuracy. The same effect as described above that the printing process can be performed can be obtained.

(C)
In the above embodiment, an example in which the diameters (17.0 mm) of the transport rollers 43 and 44 are smaller by about 0.5 mm (about 3.0%) than the diameter (17.5 mm) of the printing roller 42 is given. explained. However, the present invention is not limited to this.
For example, if the diameter of the transport roller is within a range of 1.0 to 5.0% smaller than the diameter of the print roller, the transport speed of the transport roller pair is slightly slower than the transport speed of the print roller. By improving the grip force of the mount with respect to the print roller, it is possible to obtain the same effect as described above that the transport of the mount can be stabilized and a highly accurate printing process can be performed.

(D)
In the above-described embodiment, an example in which a rubber roller is used as the pressing-side conveyance roller 43 constituting the conveyance roller pair has been described. However, the present invention is not limited to this.
For example, a resin roller can be used instead of the rubber roller.

However, as in the above-described embodiment, by using a roller having a material such as rubber having a relatively large frictional resistance compared to resin or the like on the surface, the grip force of the mount in the pair of transport rollers is increased, and the mount is transported. It is more preferable to adopt the configuration as in the above embodiment.
(E)
In the above embodiment, the example in which the present invention is applied to the weighing printer 1 has been described. However, the present invention is not limited to this.

For example, it is naturally possible to apply the present invention to a label issuing device that does not have a weighing function.
(F)
In the above embodiment, the example in which the present invention is applied to the weighing printer 1 has been described. However, the present invention is not limited to this.

  For example, the present invention is applied to an automatic weighing and packaging pricing apparatus that combines a labeling mechanism with a weighing function and a packaging function, and a weighing and packaging pricing system in which a weighing printer, a scale register, an information label printer, and the like are connected via a network. It is also possible to apply.

  The label issuing device according to the present invention has an effect that a highly accurate printing process can be performed by increasing the grip force of the mount in the print roller and stably transporting the mount. The present invention can be widely applied to various apparatuses that perform processing such as printing while conveying a sheet.

1 is a perspective view showing an external appearance of a weighing printer according to an embodiment of the present invention. FIG. 2 is a control block diagram formed in the weighing printer of FIG. 1. FIG. 2 is an internal cross-sectional view schematically showing an internal configuration of the weighing printer in FIG. 1. FIG. 2 is an internal cross-sectional view illustrating a configuration in the vicinity of a label storage unit included in the weighing printer of FIG. 1. FIG. 2 is a cross-sectional view illustrating a configuration of a drive gear and the like that drives a transport mechanism in the weighing printer of FIG. 1. The schematic diagram which shows simply the conveyance state of the label sheet in the measurement printer of FIG. The schematic diagram which shows the contact state of the label sheet in the printing roller contained in the measurement printer of FIG. FIG. 7 is a graph showing a relationship between a pressing force in a conveyance roller included in the weighing printer in FIG. 6 and an actual conveyance amount of a label sheet. (A), (b) is sectional drawing which shows the positional relationship of the operation panel in the measurement printer of FIG. 1, and the flame | frame of the main body side. (A), (b) is a schematic diagram which shows the conveyance mechanism of the label sheet in the label issuing apparatus which concerns on other embodiment of this invention.

Explanation of symbols

1 Weighing printer (label issuing device)
DESCRIPTION OF SYMBOLS 2 Weighing part 3 Main body part 3a Label issuing port 3b Frame 4 Liquid crystal monitor 5 Operation panel 21 Memory 21a Product master 22 Calculation part 30 Label issuing part 31 Label storage part 31a Mounting shaft 32 Label sheet winding part 32a Winding shaft 33 Printing unit 34 transport mechanism 35a roll guide 35b rotating shaft 41 print head 42 print roller 43 transport roller 44 transport roller 44a drive gear 45 gear portions 45a to 45d drive gear 46 peeling plate 48 auxiliary roller L label LS label sheet (mounting sheet)
LT paper tube

Claims (5)

A label issuing device that performs a printing process on the label while conveying a plurality of labels attached to a mount,
A print head for performing print processing on the label;
A print roller that is disposed at a position facing the print head and that conveys the mount in a predetermined direction in a state where the mount is wound;
A pair of transport rollers that are disposed upstream from the print roller, transport the label together with the mount in the predetermined direction, and have a transport speed lower than that of the print roller;
A label issuing device comprising: Each conveyance roller included in the conveyance roller pair is smaller than the diameter of the printing roller,
The label issuing apparatus according to claim 1. The conveying roller has a 1.0 to 5.0% diameter smaller than the printing roller.
The label issuing apparatus according to claim 2. An auxiliary roller that is disposed in the vicinity of the print roller and guides the mount in a direction in which the mount comes into contact with the print roller;
The label issuing device according to any one of claims 1 to 3. The transport rollers constituting the transport roller pair are formed of a material having a large frictional surface.
The label issuing device according to any one of claims 1 to 4.

Images