JP2014030953A - Label printing device and label trash removing tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely separate label trashes corresponding to any cases without excessively increasing time and labor in a label printing device having a label trash separation function.SOLUTION: A device includes a printing unit, a lateral pulling unit, and a label trash removing tool 10A having a separation blade 15A laid in a lateral direction perpendicular to a feeding direction on the peripheral surface tip side of a paper feed drum 11, and folds and pulling up a base material sheet 50b from a label continuous body sheet 50 at the tip part of the separation blade 15A to peel only a label trash 50c, thereby separating/removing it. The label trash removing tool 10A includes a slide rail 14 arc-shaped when seen from a side face and capable of sliding the separation blade 15A on the concentric circular arc locus of the paper feed drum 11 while supporting it by a base end side edge part to fix the blade 15A at an arbitrary angle position and directed to the tip side. A label trash separation start position is changeable and operable while maintaining the angle and the distance of the tip part of the separation blade 15A with respect to the paper feed drum peripheral surface 11.

Description

  The present invention relates to a label printing apparatus and a label waste remover, and more particularly, a label individual from a printed / flattened label continuous sheet on the leading end side of a paper feeding drum disposed downstream of a printing unit and a flattening unit. The present invention relates to a label printing apparatus having a function of separating only the level residue that is a peripheral part of the label, and a label residue removing tool having a separation blade attached to the label printing apparatus.

  The label printing apparatus prints a raw sheet consisting of a strip-shaped base sheet having an adhesive layer on the back side and a separator sheet temporarily attached to the base sheet with an upstream printing unit and a flat punching unit. In general, it has a function of punching the periphery of the printed portion of the base sheet together with the adhesive layer and removing the unnecessary peripheral portion (label residue) of the label individual with a label residue remover.

  As the label residue removing tool, as shown in FIG. 8, an upper base layer is provided on a separating bar 159 that is perpendicular to the traveling direction of the fed continuous label sheet 50 at a position close to the peripheral surface on the leading end side of the paper feed drum 11. There is known a method of separating and removing only the label residue 50c constituting the peripheral portion of the base sheet 50b while leaving only the label individual 51 of the base sheet 50b on the separator sheet 50a side by pulling the material sheet 50b and raising it acutely. Yes.

  However, in the label residue removing tool 10C of such a method, since the separation bar 159 has a cylindrical shape, the peeling angle tends to become an obtuse angle when the base sheet 50b is peeled off from the separator sheet 50a while being folded over the separation bar 159. It is suitable for a case where the separation of the label residue 50c such as a large-sized label or a paper-based substrate sheet is relatively easy.

  That is, if the label to be printed is relatively small, or the base sheet 50b is made of a thin resin film that is weak, a separation residue 53 is generated in the punching hole 52 in the label residue 50c as shown in the figure. In this case, it is also possible to manually correct the missing part of the product, but in the case of a transparent resin film, since the trace of the fingerprint can be seen from the surface of the label individual 51, it is handled as a defective product. I had to discard it.

  On the other hand, as shown in FIG. 9, there is also known a label residue removing tool 10B provided with a separation blade 17 in which a rectangular plate member 171 is suspended along a horizontal axis 170 instead of a columnar separation bar 159. ing. The separation blade 17 is arranged so that the thin plate material 171 is disposed close to the front end side of the peripheral surface of the paper feed drum 11 on which the continuous label sheet 50 is placed, and the separation direction is substantially tangent to the outer peripheral surface. The corresponding positional relationship is obtained. Therefore, the angle of the tip of the separation blade 17 with respect to the peripheral surface of the paper feed drum 11 can be set to an appropriate acute angle, and even if it is a small label individual or a base film 50b made of a resin film that is weak, it is difficult to leave a separation. It will be a thing.

  By the way, in the general label printing apparatus, since the printing operation of the base sheet 50b is intermittently performed for each predetermined range, the paper feeding operation by the paper feeding drum 11 is also intermittently performed in accordance with this. It is known that the separation / removal operation of 50c is easy to leave the label individual 51 in the label residue 50c unless it is performed at a stretch by a series of paper feeding operations from the leading end portion of the label individual 51 in the stopped state.

  However, the position where the leading end side of the label individual 51 stops on the peripheral surface of the leading edge of the paper feed drum 11 is usually not constant depending on the size of the label individual 51 to be printed, imposition, or the print pitch. . Therefore, as shown in FIG. 10, by changing the angle of the support arm 16 that supports the shaft 170 of the separation blade 17 and the mounting position / angle of the bar 170 on the support arm 16, the separation start position can be changed. A certain amount of response is possible.

  However, as apparent from a comparison between FIG. 10 and FIG. 9, in order to bring the leading end side closer to the continuous label sheet 50 in FIG. 10 from the substantially vertical state of the separation blade 17 in FIG. The angle 171 with respect to the peripheral surface of the paper feed drum 11 is enlarged, and the label residue 50c is greatly bent at the corner of the upper end of the plate 171. For this reason, the label scrap separating function is attenuated without maintaining an appropriate sharp angle of folding, and the smooth lifting operation of the label scrap 50c is impaired. Depending on the separation start position, the separating function by the label scrap removing tool is lowered. I understand that.

  In response to this problem, Japanese Patent No. 4184750 discloses that the base end side of the separation blade can be moved and fixed in the horizontal direction to cope with fluctuations in the separation start position, and from the lower end of the separation blade in the sheet feeding direction. A label waste remover has been proposed in which a plurality of piece members with protruding tips are arranged in the width direction for each row of label pieces so that the label pieces are pressed on the tip side of the piece member during label waste separation.

  By adopting such a configuration, even if the angle of the leading end portion of the separating blade with respect to the sheet surface is slightly increased, the individual label is pressed by the single member, and the separation from the label residue is easily performed reliably. However, this label residue remover is a printing object in addition to the fact that it becomes difficult to bring the leading end of the separating blade close to the sheet surface when the separating position is lower than the intermediate position on the leading end side peripheral surface of the paper feed drum. Since it is necessary to precisely adjust the position of each single member in accordance with the arrangement and number of rows of individual labels, the labor of the operator when changing the print target is likely to be excessive.

Japanese Patent No. 4184750

  The present invention is intended to solve the above-described problems, and a label printing apparatus having a function of separating a label residue on the leading end side of a paper feed drum can be used for any printing without excessive labor. It is an object of the present invention to realize reliable separation of the label residue according to the object.

  Therefore, the present invention provides a printing unit for printing on the surface of the base sheet, a flat unit for cutting out the periphery of the base sheet printing portion together with the adhesive layer on the back surface, and a periphery of the paper feed drum provided on the downstream side thereof. From the label continuum sheet comprising a label residue removing tool having a separation blade that is perpendicular to the feeding direction and horizontally passed on the front end side of the surface, and a substrate sheet that has been printed and flattened is temporarily attached to the separator sheet, A function that separates and removes only the level residue around the label individual by pulling up the base sheet at the tip of the separation blade that is close to the periphery of the paper feed drum and pulling it up in synchronization with the paper feed operation. In the label printing apparatus comprising It has a slide rail in a side view arc shape that can be slid and moved horizontally on the road and can be fixed at an arbitrary angle position and front end direction. It is possible to change the label residue separation start position while maintaining the distance.

  As described above, an arc-shaped slide rail is provided as a support member that enables the separation blade to be slid and fixed along the peripheral surface of the paper feed drum with respect to the label residue removing tool disposed on the front end side of the peripheral surface of the paper feed drum. This makes it easy to change the label separation start position while maintaining a moderate acute angle state and proximity state of the leading edge of the separation blade with respect to the peripheral surface of the paper feed drum even for a continuous label sheet that is likely to be left unseparated. In this way, it is possible to realize the reliable separation and removal of the label residue while dealing with all kinds of printing objects.

  Further, in this label printing apparatus, the separating blade is curved or bent in a direction in which the leading end side approaches the peripheral surface of the paper feed drum, and the folded label residue is formed into a convex shape along with the bending or bending. If it is characterized by being lifted while sliding in contact with part of the side surface, in addition to making it easier to bring the tip of the separation blade closer to the peripheral surface of the paper feed drum, The frictional resistance of the sliding contact portion can be kept small.

  Furthermore, in the above-described label printing apparatus, a protruding portion made of a soft resin protrudes at a predetermined height in the horizontal direction on the front end side of the inner surface of the separation blade, and a portion in contact with the label residue Is pressed by the tension accompanying the pulling up of the base sheet to reduce the height, and the portion in contact with the label individual pushes back the label solid while maintaining the height without receiving the tension during the pulling up, thereby separating the sheet. If it is characterized in that the separation of the label residue and the individual label is promoted by being kept in close contact with each other, the occurrence of separation residue can be easily suppressed to a minimum.

  In this case, the ridge is made of a soft resin cylindrical member, and a shaft inserted through the central portion thereof is pivotally supported by a plurality of supports protruding from the inner surface of the separation blade, and can be rotated around the shaft. In addition to the separation promoting function, the frictional resistance of the folded portion at the label cascading separation position can be suppressed if the rotation operation is performed in accordance with the winding operation of the base sheet in contact with the outer peripheral surface. In addition to the fact that the lifting and separating operation of the label residue is easily performed, the separation of the label residue is further promoted by the rotating operation of the cylindrical member.

  Furthermore, a separation blade made of a horizontally long thin plate-like member, and sliding within a predetermined angle range while being horizontal on a concentric arc orbit of the paper feed drum while supporting the separation blade at a side end portion of the base end portion thereof. Label slide separation start position while maintaining the angle and distance of the leading edge of the separation blade with respect to the peripheral surface of the paper feed drum, and a slide rail having a side-view arc shape that can be moved and fixed at a desired angular position and orientation of the leading edge The label waste removal tool attached to the front end side of the paper feed drum of the label printing apparatus described above is characterized in that the above-described change operation is made possible. Each function can be demonstrated.

  In addition, the lower end side is bent or bent in a direction approaching the peripheral surface of the paper feed drum, and the folded label residue is pulled up while being in sliding contact with a part of the outer surface formed into a convex shape along with the bending or bending. If the separating blade used in the label waste removing tool of the above-described label printing apparatus is characterized, it is easy to realize a smooth separation / lifting operation of the label waste simply by using this blade in the label printing apparatus.

  In addition, a protrusion made of a soft resin is projected at a predetermined height across the width of the blade on the front end side of the inner surface of the separation blade, and the portion in contact with the label residue is used to lift the base sheet. It is pressed by the accompanying tension to reduce the height, and the part where the label is in contact with it is not subjected to the tension when it is pulled up, and the label is pushed back and kept in close contact with the separator sheet. Thus, the separation blade used in the label waste removing tool of the above-described label printing apparatus, which promotes the separation of the label residue and the label individual, can minimize the occurrence of separation residue.

  In this case, the ridge is made of a soft resin cylindrical member, and the shaft inserted through the central portion thereof is pivotally supported by a plurality of supports protruding from the inner surface of the separation blade and can be rotated around the shaft. If the substrate sheet is in contact with the outer peripheral surface and is rotated in accordance with the winding operation, the frictional resistance of the folded portion at the separation position of the label residue is suppressed, and the label residue is lifted / removed. In addition to the fact that the separating operation is easily performed, the separation of the label residue is further promoted by the rotating operation of the cylindrical member.

  According to the present invention in which the separation blade is fixed by sliding in the arc shape along the peripheral surface of the paper feed drum, the label waste can be reliably separated according to any printing object without excessive labor. It can be realized.

It is a fragmentary perspective view for demonstrating the structure of the label residue removal tool of the label printing apparatus which is embodiment in this invention. It is the side view to which the separation blade of the label waste removal tool of FIG. 1 was expanded. It is a side view of the label waste removal tool of FIG. (A) And (B) is a side view for demonstrating the function of the label waste removal tool of FIG. (A), (B), (C) is a side view which shows the modification of the separation blade of FIG. (A), (B) is a side view which shows the application example of the isolation | separation blade of FIG. It is a side view which shows the other application example of the separation blade of FIG. It is a fragmentary perspective view which shows the label waste removal tool of the label printing apparatus by a prior art example. It is a partial side view which shows the label waste removal tool of the label printing apparatus by another prior art example. It is a side view for demonstrating the function of the label waste removal tool of FIG.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In the present invention, the label includes a so-called seal having a pressure-sensitive adhesive layer on the back surface of the sheet and a printed portion on the surface.

  FIG. 1 is a partial perspective view for explaining the configuration of a label residue removing tool 10A attached to the front end side of the peripheral surface of the paper feed drum 11 of the label printing apparatus according to the present embodiment. The label printing apparatus includes a printing unit (not shown) that prints on the surface of the base sheet 50b, a flat punching unit (not shown) that cuts out the periphery of the printed portion of the base sheet 50b together with the adhesive layer on the back side, and a downstream side thereof. The paper feed drum 11 is provided to intermittently feed the continuous label sheet 50 in accordance with each printing range, and the above components are well known in common with the prior art.

  Further, on the front end side of the peripheral surface of the paper feed drum 11, a label scrap removing tool 10A having a separating blade 15A that is perpendicular to the feed direction and horizontally passed and a slide rail 14 that is a support member thereof is attached. Then, from the continuous label sheet 50 formed by temporarily attaching the base sheet 50b to the separator sheet 50a, only the label residue 50c is separated while the upper base sheet 50b is folded back by the separation blade 15A disposed close to the peripheral surface of the paper feed drum 11. -Has a function to remove.

  That is, the label continuous sheet 50 formed by temporarily attaching the printed / flattened base sheet 50b to the separator sheet 50a is disposed below the circumferential surface of the paper feed drum 11 while being pulled intermittently by the paper feed drum 11. Inverted by the roller 13 and fed further downstream, it is directed downward at the tip end of the horizontally long separating blade 15A passed in the horizontal direction perpendicular to the feed direction on the tip side of the peripheral surface of the paper feed drum 11. When the base sheet 50b is turned up and pulled up while being synchronized with the feeding operation by a winding means (not shown), only the label residue 50c which is the peripheral portion of the label individual 51 in which the cutout holes 52 are formed is peeled off. Only the label individual 51 is aligned and sent.

  In the present invention, the slide rail 14 that supports the shaft 150 at the upper end of the separation blade 15A is an arc-shaped member in a side view, and has an arc-shaped groove 14a into which a side end portion (one of both end sides) of the shaft 150 is inserted. It is formed and can slide and move within an angle range of about 90 ° while supporting the separation blade 15A on the concentric circular arc track of the paper feed drum 11 by the groove 14a while being horizontal, and a side end portion of the shaft 150 Is fixed to the slide rail 14 by a fixing means such as a screw 158, so that the separation blade 15A can be fixed at a desired angular position and the tip side.

  For this reason, the label printing apparatus of the present invention provided with the label waste removing tool 10A having such a configuration maintains the moderate acute angle and the appropriate proximity distance of the tip of the separation blade 15A with respect to the peripheral surface of the paper feed drum 11 and performs the label waste separation operation. It is characterized in that the change operation of the label residue separation start position can be relatively easily performed in response to various changes in the printing target while ensuring a state suitable for the printing. In addition, although the case where only one of the both end portions of the shaft 150 is supported is shown in the figure, the slide rails 14 may be arranged to face each other so as to support both end sides.

  FIG. 2 shows an enlarged side view for explaining the configuration of the separation blade 15A in the label residue removing tool 10A. The separation blade 15A is formed by connecting the base surface side of the inner surface of a substantially rectangular plate 151 extending in the horizontal direction to a shaft 150 extending in the horizontal direction, and the tip (lower end) side of the plate 151 is paper. It is characterized in that it is curved in a direction close to the peripheral surface of the feed drum 11 and formed in a side view arc shape.

  Next, the operation and function of the label residue removing tool 10A according to the present embodiment will be described with reference to FIGS. FIG. 3 shows the case where the label residue separation start position is an intermediate position on the front end side of the paper feed drum 11 circumferential surface. And an appropriate angle (acute angle) is ensured, and the label residue 50c is peeled off from the continuous label sheet 50 at an acute angle, so that the individual label 51 is reliably separated without leaving the label residue 50c side, and the separation blade The outer surface of 15A is in a state where it is difficult to hinder the lifting operation of the label residue 50c.

  When the label waste separation start position becomes lower than the intermediate position on the front end side of the peripheral surface of the paper feed drum 11 due to the change in the size and shape of the label individual 51 to be printed, as shown in FIG. The separation blade 15A is fixed to the slide rail 14 by moving to such a position and angle. At this time, the separation blade 15A is adjusted so that the tip portion is close to the circumferential surface of the paper feed drum 11. However, in the conventional example using the linear support arm 16 shown in FIG. 17, the angle of the tip of the separating blade 15A in FIG. 3 is maintained in the present embodiment, whereas the angle of the tip of the separating blade 51c is likely to be left behind in the label residue 50c. A reliable separation can be realized.

  Further, in the flat plate-like separation blade 17 according to the conventional example of FIG. 10, since the label residue 50c is largely bent at the upper end corner of the outer surface, resistance to the lifting operation of the label residue 50c is increased and smooth separation work is performed. In contrast, in the separation blade 15A of the present embodiment, the outer surface protrudes to form a curved surface, so that the label scrap 50c during the pulling operation changes its direction while sliding on the curved surface. Since the resistance is not increased at the upper end corner, the separation operation is likely to proceed smoothly.

  Further, as shown in FIG. 4B, even when the label residue separation start position moves further downward from the position shown in FIG. Therefore, a moderate acute angle and a moderate proximity state are maintained, and a state in which the label residue 50c is not largely bent at the upper end corner of the outer surface is maintained. From the above, it is clear that the label residue removing tool 10A according to the present embodiment can realize reliable and smooth separation while dealing with any variation in the label residue separation start position accompanying the change of the printing target.

  FIG. 5 shows a modification that exhibits substantially the same function as the separation blade 15A of FIG. Fig. (A) shows a separating blade 15B having a plate material 152 formed in a flat plate shape on the upper side and an arc shape on the lower side, and Fig. (B) shows a convex surface at the lower portion of the outer surface by bending the lower end side of the flat plate into a crank shape. A separation blade 15C provided with a plate material 153, and FIG. 10C shows a separation blade 15D provided with a plate material 154 formed by bending the lower end side of the flat plate so as to form one convex portion on the outer surface. These are all shaped so that the leading end of the plate material is located inside the extended line of the base end, and the leading end is easy to fix in a state close to the peripheral surface of the paper feed drum 11, In combination with the arcuate slide rail 14, an excellent label residue separating function is exhibited as described above.

  FIG. 6A shows a separation blade 15E as an application example of the separation blade 15A of FIG. 2. The separation blade 15A has a predetermined height in the blade width direction (horizontal direction) on the front side of the inner surface of the plate 151. It is characterized in that a flexible resin-made protrusion 151a formed in a saddle shape is provided. That is, the portion of the protrusion 151a that is in contact with the label residue 50c during the lifting operation of the label residue 50c is pressed by the tension caused by the pulling to reduce its height, and the portion that is in contact with the label individual 51 is not subjected to the tension. In addition, it has an effect of keeping the label solid 51 in close contact with the separator sheet 50a while maintaining the height substantially.

  Since the separation operation of the label residue 50c and the label individual 51 is promoted by the partial height difference (step) generated in the protrusion 151a in this way, the function of minimizing the occurrence of separation residue is exhibited. Is. Silicon rubber is suitable as the soft resin constituting the protrusion 151a, but other resin materials such as natural rubber and synthetic rubber may be used as long as they have flexibility suitable for separation. In this case, at least the portion where the surface of the label residue 50c abuts is made of a material having low frictional resistance and excellent wear resistance, such as a fluororesin, to ensure durability and ensure a smooth winding operation of the label residue 50c. It is preferable from the viewpoint.

  FIG. 6B shows a separation blade 15F as an application example of the separation blade 15E shown in FIG. A, and the protrusion 151b formed by forming the soft resin into a cylindrical shape as described above has a center. It is characterized in that a shaft inserted through the portion is pivotally supported by a plurality of support pieces 151c protruding from the inner surface of the plate material 151 so as to be rotatable.

  As described above, the protrusion 151b is formed in a roller shape so as to be rotatable, so that the friction resistance when the label scrap 50c is wound is further reduced as compared with the above-described separation blade 15E, thereby realizing a smoother separation operation. It will be easy to do. The protrusions 151a and 151b in the separation blade 15F and the above-described separation blade 15E are provided on a normal separation blade 17 as shown in FIG. To be.

  FIG. 7 shows a separation blade 15G as another application example of the separation blade 15A of FIG. 4. The shaft 156 and the plate material 157 are integrally formed of a resin material, and the manufacturing cost is shown in FIG. This makes it easier to reduce the cost of the product. The type of the resin material is not particularly limited, but at least the portion where the label residue 50c is slidably contacted is made of a resin material with low surface friction resistance and excellent wear resistance, ensuring smooth separation operation and durability. In view of the above, a fluororesin such as Teflon (registered trademark) is an example of the resin.

  The separation blades 15A, 15B, 15C, 15D, 15E, 15F, and 15G described above can be used not only in combination with the slide rail 14 described above but also in a conventional label residue removing tool as shown in FIG. Even in this case, the effect of improving the label residue separating function can be expected due to the advantage that the front end is curved or bent and easily brought close to the peripheral surface of the paper feed drum 11.

  As described above, the label printing apparatus having the function of separating the label residue on the leading end side of the paper feed drum can reliably separate the label residue according to any situation without excessive labor for the operator. Can be realized.

  10A Label waste removal tool, 11 Paper feed drum, 14 Slide rail, 15A, 15B, 15C, 15D, 15E, 15F, 15G Separation blade, 50 Label continuous sheet, 50a Separator sheet, 50b Base sheet, 50c Label waste, 51 label Individual, 150, 156 shaft, 151, 152, 153, 154, 157 Plate material, 151a, 151b

Claims (8)

A printing unit for printing on the surface of the base sheet, a flat punching unit for cutting out the periphery of the printed portion of the base sheet together with the adhesive layer on the back side, and feeding at the front end side of the peripheral surface of the paper feed drum provided on the downstream side A label waste removal tool having a separating blade that is perpendicular to the direction and passed in the horizontal direction, and the paper feed drum from a continuous label sheet in which the printed and flattened base sheet is temporarily attached to a separator sheet With the function of separating and removing only the level residue, which is the peripheral part of the label, by pulling up the base sheet at the tip of the separation blade that is close to the peripheral surface and pulling it up in synchronization with the paper feeding operation. In label printing equipment,
The label residue removing tool slides horizontally on the concentric circular arc track of the paper feed drum while supporting the separation blade at the side end portion of the base end portion thereof, and at an arbitrary angular position and the front end side. A slide rail having an arcuate side view that can be fixed in a fixed manner, and the label scrap separation start position can be changed while maintaining the angle and distance of the separation blade tip with respect to the peripheral surface of the paper feed drum. A label printer characterized by.   The separation blade is bent or bent in a direction in which the front end side approaches the peripheral surface of the paper feed drum, and the folded label scrap is formed on a part of the outer surface formed in a convex shape along with the bending or bending. The label printing apparatus according to claim 1, wherein the label printing apparatus is pulled up while sliding.   On the front end side of the inner surface of the separation blade, a soft resin protrusion is projected at a predetermined height in the horizontal direction, and the portion of the protrusion that is in contact with the label residue is the base sheet. The height is reduced by being pressed by the tension associated with the pulling, and the contacting portion of the label individual is pushed back to the separator sheet while maintaining the height substantially without receiving the tension when the pulling is performed. 3. The label printing apparatus according to claim 1 or 2, wherein the label printing apparatus promotes separation of the label residue and the label individual by being left as it is.   The protrusion is made of a soft resin cylindrical member, and a shaft inserted through the central portion thereof is pivotally supported by a plurality of supports protruding from the inner surface of the separation blade, and is rotatable about the axis. The label printing apparatus according to claim 3, wherein a rotation operation is performed in accordance with a winding operation of the base sheet in contact with the outer peripheral surface thereof.   The separation blade made of a horizontally long thin plate-like member, and slidingly moved within a predetermined angle range while being horizontal on a concentric arc track of the paper feed drum while supporting the separation blade at the side end portion of the base end portion And a slide rail having a side-view arc shape that can be fixed at a desired angular position and orientation of the tip, and separating the label residue while maintaining the angle and distance of the tip of the separation blade with respect to the peripheral surface of the paper feed drum The label residue removing tool attached to the label printing apparatus according to claim 1, 2, 3, or 4, wherein the start position can be changed.   The lower end side is curved or bent in a direction approaching the peripheral surface of the paper feed drum, and the folded label debris is pulled up while being in sliding contact with a part of the outer surface formed into a convex shape along with the bending or bending. A separation blade used for a label residue remover of a label printing apparatus according to claim 1, 2, 3, or 4.   A protrusion made of a soft resin is projected at a predetermined height across the width of the blade on the distal end side of the inner surface of the separation blade, and a portion of the protrusion that is in contact with the label residue is pulled up of the base sheet. In addition to reducing the height by being pressed by the tension accompanying the label, the label individual is pushed back and brought into close contact with the separator sheet while maintaining almost the height without receiving the tension when the label individual is in contact 5. The separation blade for use in a label residue remover of a label printing apparatus according to claim 1, 2, 3 or 4, wherein the separation of the label residue and the individual label is promoted by being left as it is.   The protrusion is made of a soft resin cylindrical member, and a shaft inserted through the central portion thereof is pivotally supported by a plurality of supports protruding from the inner surface of the separation blade, and is rotatable about the shaft. The separating blade according to claim 7, wherein the separating blade performs a rotating operation in accordance with a winding operation of the base sheet in contact with the outer peripheral surface thereof.

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