Ink jet coder system and method

Information

  • Patent Grant
  • 6173551
  • Patent Number
    6,173,551
  • Date Filed
    Tuesday, April 7, 1998
    26 years ago
  • Date Issued
    Tuesday, January 16, 2001
    23 years ago
Abstract
A cigarette packing apparatus comprising means for repetitively progressing labels through a print location, a signal generator configured to generate a signal indicative of presence of the label as it passes adjacent the print location, a second signal generator configured to generate a signal indicative of a speed at the print location; a fluid jet printer head adjacent the print location and a controller configured to operate the printer head responsively to the first and second signal generators, with an additional arrangement within the packing apparatus defining a contact-free path portion sufficient for ink to dry at the indicia-bearing portion of the label as the label is progressed beyond the print location.
Description




FIELD OF INVENTION




The present invention relates generally to ink jet printing of information on cigarette packaging, and more particular to apparatus and methods for applying pre-selected information on cigarette soft pack packaging utilizing ink jet technology.




BACKGROUND OF THE INVENTION




In cigarette production, bundles of cigarettes of a predetermined number (usually 20) are wrapped in a paper and aluminum laminate which is referred to in the art as “foil”. Thereafter, the foil wrapped bundle (“foil-bundle”) is enwrapped in either a soft pack label comprising a paper or paper laminate, or in the alternative is enwrapped within a cardboard hinge lid blank.




In the past, information concerning the product (such as its time and/or place of manufacture or other information at the election of the manufacturer) was embossed or otherwise applied to the foil portion of the packaging. A consequence of such arrangement was that the outer portion of the packaging, such as the soft pack label or the cardboard blank, together with any cellophane overwrap, would have to be removed in order to access the encoded information. Accordingly, prior practices necessitated the opening and or destruction of the cigarette pack in order to ascertain date of manufacture or the like.




Printing the desired encoded information upon the outer portion of the cigarette packaging has presented manifold difficulties. Cigarette manufacturing and packing operations are conducted at extreme speeds such that any on-line printing operation at the cigarette packer tends to cause ink smearing both upon the cigarette product and upon portions of the packing machinery. Ink smears on the product compromises its quality and may lead to additional rejection of product and other manufacturing inefficiencies. Ink smears on the manufacturing machinery necessitates clean-up, taking the machine out of production and so creating additional costs.




Another particular problem associated with soft pack cigarette product is that the body of the completed package is pliable and does not present a consistent surface for precise printing operations. Accordingly, the finished soft pack packaging itself is not conducive to printing operations once the package has been fully formed.




Another difficulty in attempting to execute on-line printing operations within a cigarette packing machine is that placement of printing apparatus may interfere with smooth and consistent feeding of the packaging material.




OBJECT AND SUMMARY OF THE INVENTION




Accordingly, it is an object of the present invention to provide a novel method and apparatus for applying printed indicia upon an outer portion of the cigarette packaging on an on-line basis at a cigarette packing machine.




Another object of the present invention is to provide a method and apparatus for repetitively and accurately placing printed indicia upon an outer portion of cigarette packaging at extreme machine speeds.




Still another object of the present invention is to provide a method and apparatus for applying printed indicia upon exterior portions of a cigarette packaging such that ink smears upon the packaging and/or upon packing machinery is avoided.




Still another object of the present invention is to execute an on-line printing operation without disturbing the smooth and consistent feeding of the packaging material, with particular concern of avoiding circumstances which would tend to skew packaging material from its intended pathway.




These and other objects are achieved by the present invention which provides a cigarette packing apparatus comprising means for repetitively progressing packaging material (preferably a soft pack label) through a print location, a signal generator configured to generate a signal indicative of presence of the packaging material as it passes adjacent said print location, a second signal generator configured to generate a signal indicative of a speed at the print location; a fluid jet printer head adjacent the print location and a controller configured to operate the printer head responsively to the first and second signal generators, with an additional arrangement within the packing apparatus defining a contact-free path portion sufficient for ink to dry at the indicia-bearing portion of the packaging as the packaging material is progressed beyond the print location. Another aspect of the present invention is provision for an air jet blower adjacent the print location to accelerate drying of the printed indicia.











BRIEF DESCRIPTION OF THE DRAWING




Other objects, advantages and novel features of the present invention will become apparent from the following detailed description of the preferred embodiments, when considered in conjunction with the accompanying drawing, wherein:





FIG. 1

is a schematic of a soft pack packing machine modified in accordance with a preferred embodiment of the present invention;





FIG. 2A

is a perspective view of cigarette packaging which bears printed indicia applied in accordance with the present invention;





FIG. 2B

is a planar view of the print-bearing side of an unfolded, cigarette packaging label bearing printed indicia applied in accordance with the present invention;





FIG. 3

is a schematic side view of a preferred embodiment of the present invention for the coding of soft pack cigarette packaging;





FIG. 4

is a perspective view of the preferred embodiment shown in

FIG. 3

;





FIG. 5A

is a detailed perspective view of portions of the fixed housing frame and the delivery roller assembly of the label-feed roller assembly constructed in accordance with the preferred embodiment shown in

FIG. 3

;





FIG. 5B

is a planar view of a backside of the fixed housing frame shown in

FIG. 5A

;





FIG. 5C

is a detailed perspective view of a pivotal housing frame of the label-feed roller assembly constructed in accordance with the preferred embodiment shown in

FIG. 3

; and





FIG. 6

is a top planar view of a packaging label passing between lower idlers rollers of the fixed housing frame and the lower driven rollers of the pivotal housing frame.











DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT




Referring to

FIGS. 1 and 2B

, the present invention provides a cigarette packaging apparatus


10


and method, wherein the apparatus


10


includes an ink jet printer system


40


in accordance with a preferred embodiment of the present invention. The packaging apparatus


10


typically includes a controller


30


having an operator interface for selectively controlling the speed and operation of the packaging apparatus


10


. Preferably, the cigarette packaging apparatus


10


comprises a G. D X-1 or a G. D X-500 soft pack packing machine, which are manufactured and sold by G. D Societa per Azioni of Via Pomponia 10, 40100 Bologna, Italy, although the teachings which follow may be readily applied to other commercially available cigarette packaging machines upon a reading and understanding of the detailed description which follows.




The aforementioned packaging apparatus


10


includes a label-feed roller assembly


20


arranged to repetitively directing individual labels (soft pack labels)


25


along a vertical pathway


44


to a folding station


27


. The timing and execution of the feeding operations through the label-feed roller assembly


20


and the timing and execution of folding operations at the folding station


27


are coordinated by the machine controller


30


. In accordance with a preferred embodiment of the present invention, an ink jet printer system


40


is operative at a print location


42


along the label-feed roller assembly


20


so that the as the soft pack labels


25


progress along the feed path


44


and pass the print location


42


, the ink jet printer system


40


applies pre-selected inked indicia


3


upon each of the soft pack labels


25


at a pre-selected location along each label


25


.




Referring now to

FIGS. 2A and 2B

, the printed indicia


3


preferably comprise characters that encode or otherwise indicate information such as the date and/or place of manufacture, work shift or machine, brand type or other pre-selected bits of information. Preferably, the printed information is applied at a pre-selected panel portion


4


of the label


25


, which upon conclusion of all folding operations, lies in a region between the fold lines


5




a


and


5




b


adjacent the vee fold lines


6




a


and


6




b


at the bottom in portion of the completed cigarette pack


7


. Such location at the end fold portion is preferred, because it is usually is unobtrusive of decorative patterns or other printed matter such as tax stampings


11


or warnings


14


that are typically applied to the cigarette pack


7


. Preferably, the pre-selected location


4


is surface treated, such as being scored or coated, so that they readily retain the ink received from the ink jet printer system


40


.




The pre-selected locations


4


may be situated in places other than that specifically shown in

FIGS. 2A and 2B

, such as upon entirely different portion of the end panel or upon other panels of the label


25


.




Referring now to

FIGS. 1 and 3

, the ink jet printer system


40


preferably comprises a print controller


48


, an ink jet printer head


46


located adjacent the aforementioned print location


42


, a product detect sensor


50


located adjacent (preferably to one side or just above) the ink jet printer head


46


and an air jet blower


52


. Downstream of the print location


46


, the label-feed roller assembly


20


is provided with arrangements that will be detailed in the discussion which follows, such that any printed indicia


3


that is applied to any label


25


by the ink jet printer head


46


is relieved of any contact with the label-feed system


20


such the labels


25


arrive at the folding station


27


in an unsmeared condition and without skew.




The controller


48


of the ink jet printer system


40


is linked to the controller


30


of the packaging apparatus


10


so as to receive signals from the latter indicating operation of the packaging apparatus


10


(an “on/off” signal) as well as its speed of operation (a “machine speed” signal). The latter signal may be routed from the controller


30


, itself or directly off a shaft-encoder


60


typically provided as part of the general drive mechanism


62


of the packaging apparatus


10


.




The preferred operational environment of the present invention includes a cigarette packaging apparatus


10


such as a G.D X-500 packer whose general layout is schematically represented in FIG.


1


. Typically, such machines collate individual cigarettes


102


into a plurality of cigarette bundles


100


(usually 20 cigarettes per bundle) and direct same in succession onto a first rotatable machine wheel


105


. At an exit portion of the first wheel


105


, a plunger pushes the bundle


100


into a second machine wheel


108


together with a piece of foil


104


, and the bundle


100


and foil undergo further wrapping operations. At the exit portion of the second wheel


108


, the bundle


100


is fully enwrapped within the foil piece


104


and is situated adjacent a folding station


27


at which the label-feed assembly


20


has placed a label


25


.




Referring now also to

FIG. 3

, the folding station


27


includes a vertically adjustable stop


170


at the folding station


27


for placing a received label


25


in a desired position relative to the third wheel


114


and the plunger


110


of the second wheel


108


. The plunger


110


then urges the resultant foil bundle


106


through the folding station


27


so as to plunge the foil bundle


106


together with the label


25


into a receiver


112


of a third wheel


114


of the packaging apparatus


10


.




Upon passage about arcuate portions of the third wheel


114


and transfer to and motion about the fourth wheel


116


, the label


25


is wrapped about and folded into final form about the foil bundle


106


. Upon removal of the folded cigarette package


118


from the fourth wheel


116


, the folded cigarette package


118


is optionally passed through a closure stamp application station


120


and collected in face to face relation along an exit ramp


122


.




Each of the first, second, third and fourth wheels


105


,


108


,


114


and


116


are driven by the drive system


62


of the cigarette packaging


10


such as is typically provided in GD X-1 and GD X-500 packing machines.




Typically, soft pack labels are fed from one or more continuous reels


130


through a system of tension rollers


132


and one or more decurlers


134


,


136


. Referring particularly to

FIG. 3

, the continuous ribbon of labels


137


passes along a horizontal path portion


138


, along which is located a cutting station


140


. In the preferred embodiment, the cutting station


140


includes a detector


142


for establishing a signal to the machine controller


30


that the continuous ribbon of labels


137


is adjacent the cutting station


140


. A driven sector wheel


144


includes a notch


146


for registering with a leading edge


39


of the ribbon


137


as it locates at the cutting station


140


. Upon registration, the cutter


146


severs the label


125


from the remainder of the ribbon


137


. Upon completion of the severing step at the rotary cutter


146


, the sector wheel


144


in cooperation with the arcuate guide


148


directs the label


25


into the label-feed roller assembly


20


.




In the alternative, pre-cut labels


25


may be fed directly to the label-feed roller assembly


20


. Preferably, such would include a feed arrangement in cooperation with the sector wheel


144


as previously described, or an equivalent thereof so as to properly direct individual labels


25


into vertical path portion


44


of the label-feed roller assembly


20


.




In either event, preferably a glue applicator


150


is located just downstream of the sector wheel


144


to apply adhesive, preferably in the form of a liquid glue, to selected locations along the label


25


as it enters the label-feed roller assembly


20


. Typically, the glue applicator


150


comprises one or more rotary daubers


152


placed adjacent glue pots


121


such that upon rotation the dauber picks up an incremental amount of adhesive from the glue pot


121


and places it upon a selected portion or portions of the label


25


. Preferably, the dauber


152


applies adhesive to the non-printed side of the label


25


.




Adjacent the glue dauber


152


is situated a door assembly


160


of the label-feed roller assembly


20


. The door assembly


160


provides support for a back-up roller


163


arranged in opposing relation to the glue dauber


152


. The door assembly


160


also supports a first set of opposing rollers


165


and a second, lower set of opposing rollers


167


. The label-feed roller assembly


20


further comprises a delivery roller assembly


170


located beneath the door assembly


160


. The delivery roller assembly


170


supports a guide plate


200


, a roller pin


210


and a biased idler rollers


211


adjacent end portions of the roller pin


210


.




Still referring to

FIGS. 3 and 4

, as a label


25


is drawn from the cutting station


140


by rotation of the sector wheel


144


, it enters the door assembly


160


of the label-feed roller assembly


20


, whereupon its leading edge


39


′ creates a change in light intensity that is detected by the sensor


50


through the light pipe


51


located adjacent the ink jet printer head


46


. As a result, the print controller


48


commands execution of a print operation by the ink jet head


46


as the label


25


passes through the print location


42


along the door assembly


160


. The controller


48


also executes a coordinated command to discharge air through the air jet port


52


to accelerate drying of the indicia


3


printed upon the label


25


by the ink jet printer head


46


. The controller


48


is programmed to await receipt of the next signal from the sensor


50


that a subsequent label


25


has entered the print station


53


.




Ink is supplied to each ink jet printer head


46


from a reservoir


49


, whose level is monitored by the print controller


48


of the ink jet printer system


20


. Preferably, the ink supplied and discharged from the ink jet printer head


46


is a quick-drying, water-based ink, preferably Number 99-4520 Q which is available from Videojet Systems International, Inc. of Wood Dale, Ill. 60191-1073.




The ink jet printer system


20


further includes a product detect sensor system preferably comprising an optical sensor


50


and an optical pipe


51


extending from the sensor


50


to a location adjacent the print location


42


on the door assembly


160


. The sensor


50


is arranged to generate a signal upon detection of a change in light intensity received from the optical pipe


51


. This indicative signal is communicated to the print controller


48


of the ink jet printing system


20


. The light receiving end


51




a


of the optical pipe in a fixed position, preferably adjacent the ink jet printing head


46


, preferably to one side or immediately above same.




Both the sensor system and the controller


48


is obtainable from Videojet Systems International, Inc. of Wood Dale, Ill. 60191-1073. The controller


48


preferably comprises a Videojet ES 170i Ultra High Speed Printer from the same Videojet Systems International, Inc. of Wood Dale, Ill. A suitable commercially available product suitable for use as the sensor


50


is a Tri-tronics Photoeye SER-FI. A commercially available Fiber Optic-Cable BF-B-36T and lens (UAC-5) may be used for the optical pipe


51


.




The print controller


48


and system controller


30


are configured to operate the ink jet printer system


20


as follows: once the packaging machine


10


is powered up and the printer control box


48


is ready to print, the packaging machine


10


is allowed to start normally. If the printer


20


at any time is unable to print due to such factors as loss of power, low ink supply or make-up levels or other internal fault, the system controller


30


shuts down the packaging machine


10


. A warning light is illuminated prior to shut down to indicate the aforementioned conditions, so as to facilitate corrective action by the operator.




When the packaging machine


10


is operating, the print controller


48


receives a signal from the product detect sensor


50


and a second signal from the shaft encoder


60


of the central drive system of the packaging machine


10


(in the alternative, the print controller


48


might be linked to a separate shaft encoder or other device; shaft encoders themselves employ a proximity sensor or the like to generate a signal upon each rotation of the shaft to which it is operatively affixed). From processing these signals, the controller


48


of the ink jet coder system


20


can resolve when a cut label


25


will arrive at the print location


42


and how fast it is moving. With such information, the controller


48


executes a printing operation such that the desired information is placed upon the packaging piece


25


consistently, both as to its placement, character size and layout.




In the printer head


46


, ink is dispensed droplet by droplet in accordance with known fluid jet technologies, wherein ink is sent under pressure to an emitter having a nozzle, while at the same time a piezoelectric device (resonator) transmits acoustic vibration to the jet, causing the jet of ink to break up into droplets of a consistent size, such as approximately 70 microns or thereabouts. Typically, one or more electrodes adjacent the jet at the break-off point apply a charge proportional to the voltage applied to the electrodes.




The charged droplets are then directed between deflection plates between which an electrical potential is maintained. The droplets are thus deflected from their initial trajectory proportionately to their electrical charge. Any uncharged droplets are captured in a trap and recycled in the ink reservoir.




The combination of the drop deflection and of the object movement perpendicular to this deflection enables writing of all kinds of patterns, notably characters, on any substrate regardless of its nature.




The controller


48


is further programmed to operate the air jet blower


52


in timed relation to the aforementioned signals from product detect sensor


50


and shaft encoder


60


. Preferably the air jet blower receives pressurized air from a machine system source


53


such as that supplied at the solenoid of the closure stamp application station


120


. At the command of the print controller


48


, such arrangement provides air to the jet blower


52


at a pressure of approximately 20 psiag when the machine


10


is operating at a speed of approximately 400 packs a minute. Other sources of machine-sourced air might be readily employed, or alternatively, separately dedicated sources of air or other gas.




Referring now to FIGS.


5




a


and


5




b


, the door assembly


160


preferably comprises a fixed housing frame


162


(FIG.


5




a


) and a pivotal housing frame


164


(FIG.


5


B), which are hinged together at a hinge


165




a


,


165




b


, or some other convenient arrangement such that the pivotal frame may be swung away from the fixed door frame


162


after operations for accessing the interior of the door assembly


160


to clear jams or to perform maintenance and repair.




Referring particularly to

FIG. 5A

, the fixed housing frame


162


generally faces (is situated along) the print-bearing side of the labels


25


as they pass through the door assembly


160


. The back-up roller


163


is supported at the upper portion of the fixed housing frame


162


and is driven by a gear-wheel connection


163




g


with the dauber


152


. A first pair of idler rollers


172




b


,


172




b


are located beneath the back-up roller


163


and are part of the aforementioned opposing set of rollers


165


. The fixed housing frame


162


also supports a second lower set of idler rollers


178




a


,


178




b


which are part of the aforementioned lower opposing set of rollers


167


. The fixed housing frame


162


further includes guide surfaces, including longitudinal edges


168


,


169


, and at least two, preferably three, or possibly more, rails


174


,


175


and


176


to confine the label


25


against excessive bending or folding action as it passes through the door assembly


160


.




Preferably, the upper idler roller


172




a


and the lower idler roller


178




a


are located along the same rail


174


, while the upper idler roller


172




b


and the lower idler roller


178




b


are located along the same rail


176


. A transverse notch


179


is established in a middle portion of the fixed housing frame between the upper and lower sets of idler rollers


172




a,b


and


178




a,b


to provide a port through which the ink jet printer head


46


and the optical pipe


51


of the ink jet printing system


40


may locate. Preferably, the discharge port


47


of the ink jet printer head


46


is vertically aligned with the guide rail


176


, and therefore the idler rollers


172




b


and


178




b


as well. Such alignment and proximity promotes consistent placement of the target surface portion


4


of each passing label


25


relative to the ink jet printer head


46


.




The notch


179


in the fixed housing fame


162


bisects the rail


176


into an upper portion


176




a


having a smooth surface and a lower rail portion


176




b


the latter which is provided with a grooved surface


185


. The groove


185


is vertically aligned beneath the discharge port


47


of the ink jet printer head


46


and is of a width sufficient to provide clearance for any printed indicia that may be applied to the passing label


25


. In the preferred embodiment, the groove


185


is 15 millimeters wide and approximately one-half millimeter deep, although it is contemplated that the dimensions of the groove


185


might be varied in accordance with the particular application. For example, a wider field of printed indicia


3


might require a wider groove


185


and visa-versa.




Likewise, a groove


179




b


is provide in the lower idler roller


178




b


situated along the lower guide rail portion


176




b


. A similar groove


179




a


is provided in the other lower idler roller


178




a


so as to balance contact forces between the rollers


178




a


,


178




b


across the passing labels


25


. Such arrangement minimizes skewing action as the labels


25


are fed through the door assembly


160


.




The lower portion


176




b


of the guide rail


176


further includes at least one port


188


for the discharge of the air jet blower


52


upon printed indicia


3


as it passes along the vertical pathway


44


downstream of the ink jet printer head


46


. Although the port


188


is shown at a location below the roller


178




b


, practice of the invention is entirely workable with placement of a port


188


above the roller


178




b


, whether in substitution or in addition to the port


188


shown in FIG.


5


A. The air jet blower


52


is preferably mounted to the backside of the fixed housing frame


162


.




Referring now to

FIGS. 5A and 5B

, as previously mentioned, the label-feed roller assembly


20


also includes a delivery roller assembly


170


, which preferably comprises a fixed guide plate


200


configured to slidingly receive labels


25


after they are directed through the door assembly


160


. The guide plate


200


includes a groove


218


. The delivery roller assembly


170


further comprises a driven roller pin


210


that is rotatably disposed at a lower portion of the guideplate


200


. A groove


218


is formed in the guide plate


200


in vertical alignment with the groove


185


of the lower rail portion


176




a


of the fixed housing


162


.




Preferably, the roller pin


210


includes a first contact roller portion


212


which is preferably vertically disposed below the roller


178




a


of the door assembly


160


. At its opposite end, the roller pin


210


includes a second contact roller portion


215


that is provided with a roller recessed portion


216


. The roller recessed portion


216


is vertically aligned with the groove


218


of the guide plate


200


, such that a contact-free pathway portion


190


is defined by the groove


185


in the lower rail portion


176




a


of the door assembly


160


, the groove


179




b


of the idler roller


178




b


, the groove


218


of the guide plate


200


and the roller recessed portion


216


of the roller pin


210


. Accordingly, there is established a continuation of the contact-free pathway


190


beginning at the proximity of the discharge port


47


of the ink jet gun


46


and extending through both the door assembly


160


(along the groove


185


of the rail portion


176




b


and the groove


179




b


of the idler wheel


178




b


) and the roller delivery assembly


170


(along the groove


218


of the guide plate


200


and the recessed portion of the roller pin


210


) so that the printed indicia


3


on a passing label


25


arrives at the folding station


27


in an unsmeared condition.




Referring now to

FIG. 5C

, the pivotal housing frame


162


includes driven rollers


312




a


and


312




b


which are disposed in opposing relation to the idler rollers


172




a


and


172




b


of the fixed housing frame, respectively, when the pivotal housing frame


164


is closed against the fixed housing frame


162


. Likewise, the pivotal housing frame


164


includes a second lower pair of driven rollers


322




a


and


322




b


which are disposed in opposing relation to the idler rollers


178




a


and


178




b


of the fixed housing frame, respectively, when the pivotal housing frame


164


is closed against the fixed housing frame


162


. Referring now also to

FIG. 6

, preferably, both driven rollers


322




a


and


322




b


include rims


325




a


and


325




b


, respectively, of a slightly lesser width than the widths of the opposing portions


328


of the idler rollers


178




a


and


178




b


. The driven rollers


322




a


and


322




b


include a second recess


330


where the rollers


322




a


and


322




b


receive rails


332


and


334


of the housing frame


164


, respectively. Another middle rail


336


is preferably situated between the rails


332


and


334


. Preferably, the rollers


312




a,b


and


322




a,b


of the pivotal housing frame


164


are driven off the central drive system of the packaging machine


10


as is typically provided in a G. D X-1 or G. D X-500 machine.




Referring to back to

FIG. 4

, the cigarette packaging apparatus


10


preferably includes an arrangement for adjusting the lateral placement of the ribbon of labels


129


and therefore the lateral placement of individual labels


25


relative to the ink jet printer head


46


so that accurate placement can be maintained and machine drift maybe compensated. In particular, the arrangement includes a manually adjustable slider mount


133


at least one, but preferably both of the de-curling assemblies


134


and


136


. A GilmanPrecision Slide available from Russel T. Gilman, Inc. is a preferred, commercial available mount for this application. The arrangement facilitates placement of the printed indicia


3


exactly where desired during start up and to compensate for any drifting during extended machine operations and/or other causes of displacements of the indicia


3


, such as from bobbin changes.




It is to be appreciated that the preferred embodiment of the present invention provides ink jet printing of soft pack labels and the like at a print location


42


sufficiently removed from the folding station


27


such that the printed indicia is given a time to dry before it enters folding operations. The allotted spacing, together with the special handling of the label through the label-feed roller assembly


20


(providing a contact-free portion and symmetry at the rollers to minimize skewing) provides a unique effective manner for applying information upon soft pack cigarette packages that is readily readable without the destruction of product.




Thus, it is provided an apparatus and method for manufacturing cigarette packaging featuring ink jet coding. One skilled in the art will appreciate that the present invention can be practiced by other than the preferred embodiments, which are presented for purposes of illustration and not limitation, and the present invention is limited only by the claims that follow.



Claims
  • 1. A cigarette packaging apparatus comprising:a folding station configured to at least partially wrap a label about a pre-arranged bundle of cigarettes; means for repetitively dispensing labels along a pathway leading to said folding station; a first signal generator arranged to generate a signal indicative of a speed of the label along said pathway; a second signal generator adjacent a print location along the aforementioned pathway configured to generate a signal indicative of presence of the label as it passes adjacent said printing location; a first controller which controls said dispensing of said labels and folding operations performed by said folding station; a fluid jet printer head adjacent the print location and a second controller which is in communication with said first controller and which operates said printer head responsive to signals generated by said first and second signal generators so as to controllably apply printed indicia upon a pre-selected portion of said label as it passes said print location; and an arrangement providing a contact-free path portion along which said pre-selected indicia-bearing portion traverses as said label is progressed from said print location to the folding station so that said label arrives at said folding station in an unsmeared condition; wherein said means for repetitively dispensing labels comprises a label-feed roller assembly, said label-feed roller assembly directing said packaging material along said path across said print location, said label-feed roller assembly defines said contact-free path portion downstream of said print location wherealong said applied indicia is maintained in a spaced relation from opposing portions of said label-feed roller assembly; wherein said label-feed roller assembly includes a fixed housing portion, said fixed housing portion including a grooved guide rail along said contact-free path portion; and wherein said label-feed roller assembly includes a grooved roller at a location along said guide rail.
  • 2. The cigarette packaging apparatus as claimed in claim 1 further comprising a gas blower adjacent said print location and configured to apply a discharge of gas upon said indicia bearing portion as said bundle is directed along said contact-free path portion.
  • 3. The cigarette packing apparatus as claimed in claim 1, wherein said label-feed roller assembly includes a second grooved roller located transversely of said guide rail location along said guide rail.
  • 4. The cigarette packing apparatus as claimed in claim 3, wherein said label-feed roller assembly includes a delivery roller assembly downstream of said fixed housing portion, said delivery roller assembly including a groove and a recessed roller pin portion aligned with said grooved guide of said fixed housing portion.
  • 5. The cigarette packing apparatus as claimed in claim 3, further comprising a label decurler upstream of said label-feed roller assembly, said label decurler being laterally adjustable in position relative to said label-feed roller assembly.
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