The present invention relates to a hand-held label dispensing apparatus, a label for use therein and a method for receiving and applying labels to products.
Adhesive labels have long been used to add information to products to which they are adhered. In some cases, the information is embodied in the shape or color of the label. In other cases, information is printed on the label using symbols, letters, or numbers.
Often, a user desires to adhere a number of adhesive labels, each carrying the same information, to a group of similar objects. In these situations, it is often desirable for a user to be able to apply the labels to the group of objects as quickly as possible. One example of such a situation is in a retail store where a clerk may be tasked with applying adhesive price tag labels to a group of like products.
Various means have been proposed to aid in the application of adhesive labels. A typical label dispenser receives a roll of labels of a fixed size affixed to a backing or web with perforations. The perforations in the backing are engaged by an advancing wheel which advances the paper around an edge or roller and peels the backing away from adhesive of the labels effecting a release of the labels from the backing. The distance that the backing is advanced is usually determined by the amount that a lever linked to the advancing wheel is depressed. This type dispenser, however, does not allow a user to easily switch between label shapes or sizes and is configurable only to dispense labels on a roll having a constant size and shape. To switch between label sizes, a complicated calibration process is generally required. Also, the labels must be adhered to the backing in an accurate relationship to the perforations in order to reliably dispense the labels, increasing the cost of manufacture.
Thus, there remains a need for a hand-held label dispenser that enables a user to easily dispense labels of various shapes and sizes without calibration of the dispenser and which is configured to receive readily manufactured label rolls.
The present invention contemplates a hand-held label dispenser, a label configured for use therein and a method for dispensing labels. The labels of the present invention include tabs located on a side thereof which extend outwardly from a longitudinal edge of the backing material and indicates to a mechanism of the label dispenser a position of the label so that the label dispenser can sense that the label has reached a predetermined position relative to an application area of the dispenser. In the dispenser, a dispensing lever engages an advancing member which moves the backing material around the application area, partially peeling the backing material away from the adhesive side of the labels. When the dispenser senses the tab of an approaching label adhered to the backing material, a lock mechanism is engaged which restricts further movement of the dispensing lever. Once the label is applied and the dispensing lever is released, a biasing member returns the dispensing lever and advancing member to their initial positions.
A motion limiting mechanism may be provided which is configured to be engaged by the lock mechanism when the sensing part senses the presence of the tab in the predetermined position. The motion limiting mechanism allows the advancing member to be moved an extra amount before stopping further motion of the label and backing material.
In a method of the present invention, a label releasably adhered to a backing material is advanced towards an application area of a dispenser, partially separating the label from the backing material. A tab of the label extending outwardly from a longitudinal edge of the backing material is sensed to determine when the tab and the label have reached a predetermined distance relative to the application area. When the label is sensed to be in the predetermined position, further advancement of the label and backing material is stopped.
The features of the present application can be more readily understood from the following detailed description with reference to the accompanying drawings wherein:
The present invention provides a label, a label dispensing apparatus, and a method for dispensing labels.
As shown in
As shown in
Because the labels 100 are attached to the backing 104 by an adhesive 102 of limited tack, the labels 100 may be easily peeled off of the backing 104 by bending the backing 104 away from the back of the labels. As shown in
To facilitate easier separation of the labels 100 from the backing 104, it is desirable that the labels 100 be stiffer with respect to the axis of the bend than the backing 104. If the labels 100 are stiffer than the backing 104, the labels 100 will naturally continue in a direction tangential to their motion towards the application area 508 and will not bend to follow the backing 104 around the bend area 508.
The adhesion strength of the labels 100 to the backing 104 may be controlled, for example, by the selection of the particular adhesive 102 applied to the underside of the labels 100. There are numerous adhesives which are well known in the art that provide different adhesive strengths, among other properties, for a particular environment and for particular adherends. Another way to control the adhesive strength of the label 100 to the backing 104 is to select the surface of the backing 104 to which the label 100 is adhered. For example, the backing 104 may be selected from a materials which do not adhere strongly to the particular adhesive 102 used on the labels 100. The surface of the backing 104 to which the labels 100 are to be adhered may also be finished in a particular fashion to limit the adhesion between the labels 100 and the backing 104. The backing 104 may be highly polished or roughly textured, for example. In another example, a backing substrate may be coated with a material which does not adhere particularly well to the label, such as wax, or a release agent may be used. A minimum amount of adhesion strength is necessary, however, to ensure that the labels 100 do not inadvertently become separated from the backing 104.
As the label 100 is separated from the backing 104 at the application area 508 of the dispenser 500, it is desirable not to completely separate the label 100 from the backing 104 so that the label 100 may be accurately applied to an adherend surface without the risk of misapplication. By holding the backing 104 with the label 100 partially adhered thereto, a user may direct the application of the label 100 by directing the movement of the backing 104. Thus, the amount that the label 100 is separated from the backing 104 and, correspondingly, the adhesion strength of the portion of the label 100 still adhered to the backing 104 are important considerations in the configuration of a label dispenser 500.
As shown in
In one example of a lock mechanism 510, the rotation of the dispensing lever 504 about an axis 522 is translated into rotation of a locking wheel having an axis perpendicular to the axis of rotation 522 of the dispensing lever 504 through, for example, a pair of meshing gears or a rack and pinion gear mechanism. The locking wheel is provided with teeth which may be engaged by a locking part having a tooth. The locking finger 518 and sensing finger 516 may be integrally formed at opposite ends of a rocker arm 517 comprising a part of a lock mechanism 510. The rocker arm 517 has an axis of rotation generally parallel to the axis of rotation of the locking wheel. As the sensing finger 516 is contacted and deflected away from the backing 104 by a tab 106 of a label 100, the locking finger 518 is rotated towards and engages the teeth of the locking wheel, limiting further rotation of the locking wheel, and thus limiting further rotation of the dispensing lever 504.
In a different example of a lock mechanism 510, shown in
As shown in
The location of the tab 106 is configured to allow a desired portion of the label 100 to separate from the backing 104 before causing the locking mechanism 510 to lock further movement of the dispensing lever 504. The amount that the label 100 is separated from the backing 104 is determined by the distance from the leading edge of the label 108 along a longitudinal length of the label 100 to the leading edge of the tab 106.
In one example of a sensing finger 516, the sensing finger 516 contacts the leading edge of the tab 602 and deflects in a direction transverse to the longitudinal edge 114 as the backing 104 and label 100 are moved towards the application area 508 by the backing advancing member 506. In this example, it is generally preferable to configure the tabs 106 of different label sizes to be consistent in at least the amount that the tabs 106 extend beyond the longitudinal edge 114 of the backing 104. In another example, the sensing finger may contact the leading edge of the tab 112 and deflect in a direction away from the top surface of the label 116.
When the sensing finger 516 has deflected a predetermined distance, the locking finger 518, which is connected to the sensing finger 516, engages the dispensing lever 504, limiting its further movement. The predetermined deflection distance of the sensing finger 516 is equal to or less than the transverse distance that the tab 106 of the label 100 projects from the longitudinal edge 114 of the backing 104. In the example shown in
As shown in
The tabs 106 of the labels 100 need not be consistent in shape or placement relative to the body of the label 100. Similarly, the adhesive 102 used on the labels 100 need not be consistent, especially when different shapes or types of labels 100 are provided on a common backing 104 or on different rolls of labels 200 configured to be received by the same dispenser 500. For example, the effective leading edge 602 of a tab 106 of a relatively large label 100 having a relatively strong adhesive 102 may be placed further towards the trailing edge 110 than the effective leading edge 602 of a tab 106 on a relatively small label 100 having weaker adhesive 102. The configuration of each label 100, including the adhesive 102 used, the size and shape of the label 100 and the location of the tab 106, is customizable.
The overall width of the labels 100 is also customizable. Because the tabs 106 of the various labels 100 are all configured to extend from the same longitudinal edge 114 of the backing 104, the width of the labels 100 is not dependent upon the interaction of the tabs 106 with the sensing finger 516.
To aid in proper tracking of the labels 100 and backing 104 about the application area 508, a guiding member 702 is provided which guides the backing 104 and labels 100 towards the sensing finger 516. As shown in
The guiding surface 706 also prevents the backing 104 from travelling in an unintended direction as the backing advancing member 506 is actuated by the dispensing lever 504. If the backing 104 is wide or the advancing member 506 is located to one side of the longitudinal edge 114 of the backing 104, the backing advancing member 506 provides an off center moving force which tends to cause an unintended motion of the backing 104 as it moves about the application area 508. Such an unintended motion, if not prevented, may cause the sensing finger 516 to sense the tabs 106 of the labels 100 improperly or may cause a rip in the backing 104.
When applying a label 100 to an object or product, during the final separation of the label 100 from the backing 104, the adhesion of the label 100 to the backing 104 has a tendency to pull the backing 104 away from the dispenser 500, the backing 104 staying adhered to the label 100. To prevent such an occurrence, the dispenser 500 may include a roll tensioning device 802, as shown in
In one example of a backing advancing member 506, teeth 806 are alternately engaged in linear grooves of a plate which extends in the direction of motion of the backing advancing member 506. The backing 104 is fed through a slight gap between the teeth 806 and the grooves before using the dispenser 500. In another example, teeth 806 of the backing advancing member 506 are spaced a slight distance away from a flat plate 808. When actuated by the dispensing lever 504, the teeth 806 of the backing advancing member 506 engage the backing 104, digging into the backing 104 or perforating it slightly. Once engaged, the teeth 806 of the backing advancing member 506 move the backing 104 away from the application area 508, partially separating the label 100 from the backing 104, and drawing more backing 104 and labels 100 from the roll 200. Once the dispensing lever 504 is locked by the locking mechanism 510, the backing advancing member 506 is held in place while the user applies the label 100 to the object. Once the label 100 is applied, the user releases the lever 504, allowing the backing advancing member 506 to disengage from the backing 104 and return to its initial position. The teeth 806 may be angled to point towards the direction of movement of the backing 104 to better engage the backing 104 on the advancing stroke, while allowing for easier disengagement of the backing 104 at the beginning of the return stroke.
In another example of an advancing member 506, a wheel whose outer circumferential surface compresses the backing 104 against another wheel or a fixed surface is caused to rotate by the movement of the dispensing lever 504. The engagement between the dispensing lever 504 and the advancement wheel is configured to transmit motion only in the advancing direction and not in the return direction. Such a configuration may be accomplished, for example, with the employment of a ratchet and pawl system.
The dispenser 500 may also include a label applicator 810, as shown in
The dispenser 500 may also be provided with a motion limiting mechanism 1100 as shown in
The shapes and sizes of the tabs 106 of the labels 100 may be different. The tabs 106 of the labels 100 may be configured to anticipate the extra movement distance of the backing 104 created by a motion limiting mechanism 1100. For example, the tabs 106 may have a longitudinal dimension greater than, equal to, or less than the extra movement distance. If the tabs 106 have a longitudinal dimension greater than the extra movement distance, the sensing finger 516 of the lock mechanism 510 will remain in contact with the side of the tab 106 even after the backing 104 is moved the extra distance by the backing advancing member 506, thus still engaging the lock mechanism 510 until the label 100 is applied to an object.
If the tab 106 has a longitudinal dimension equal to or less than the extra movement distance, the sensing finger 516 will detect the trailing edge of the tab 106 as the backing advancing member 506 advances the backing 104 the extra movement distance. When the trailing edge of the tab 106 is sensed, the lock mechanism 510 will disengage from the ratchet 1102, allowing the dispensing handle 504 to be fully depressed and the label 100 completely separated from the backing 104. Such a feature may be useful in allowing the user to dispose of an unwanted label 100 without touching the label 100 with his or her fingers. For example, the torsion spring 1104 of the motion limiting mechanism 1100 may provide a greater resistance to the depression of the dispensing lever 504 once the ratchet 1102 is engaged by the locking finger 518, than a biasing member 512 opposing depression of the dispensing lever 504 in relation to the handle 502. In such a configuration, the user would first feel the smaller resistance of the biasing member 512 until the effective leading edge 602 of the tab 106 reaches the sensing part 516. Then, the user will feel the larger resistance of the torsion spring 1104 as the motion limiting mechanism 1000 is compressed and the tab 106 is advanced past the sensing finger 516. Once the trailing edge of the tab 106 is advanced past the sensing finger 516, the user will again feel the light resistance of the biasing member 512, as the lock mechanism 510 will have disengaged the motion limiting member 1100. Thus, in this configuration, the user is able to sense when a label 100 has been advanced to a predetermined position by feeling the resistance to the relative motion of the dispensing lever 504 to the handle 502. The predetermined position may be the ideal separation amount of the label 100 from the backing 104 for application of the label 100 to an object. When the user encounters the stronger resistance of the torsion spring 1104, he or she may apply the label 100 to an object. The user may also continue depressing the dispensing lever 504 past the period of high resistance to fully separate the label 100 from the backing 104, if desired.
A label dispensing method according to an example of the present invention is shown in
In
In describing examples and exemplary embodiments, specific terminology is employed for the sake of clarity in this disclosure. However, the disclosure of this patent specification is not intended to be limited to the specific terminology so selected and it is to be understood that each specific element includes all technical equivalents that operate in a similar manner.
In addition, the embodiments and examples above are illustrative, and many variations can be introduced on them without departing from the spirit of the disclosure or from the scope of the appended claims. For example, elements and/or features of different illustrative and exemplary embodiments herein may be combined with each other and/or substituted for each other within the scope of this disclosure.