Abstract:
An apparatus and method for delivering signatures to a binding line, the apparatus and method preferably comprising a printer feeder apparatus and method for providing personalized information in a variety of locations upon a selected one of a plurality of signatures types before the signatures are fed to the binding line.

Description:
RELATED APPLICATIONS  
       [0001]    This application is a continuation of co-pending U.S. patent application Ser. No. 10/265,887, filed Oct. 7, 2002, which is a continuation of U.S. patent application Ser. No. 09/880,560, filed Jun. 13, 2001, which is a divisional of U.S. patent application Ser. No. 09/426,345, filed Oct. 25, 1999. 
     
    
     
       FIELD OF THE INVENTION  
         [0002]    The present invention relates to an apparatus and method for delivering signatures to a binding line and, more particularly, to a printer feeder apparatus and method for selecting one of a plurality of signature types from multiple hopper feeders and delivering the signatures to the binding line.  
         BACKGROUND OF THE INVENTION  
         [0003]    Binding systems and lines are well known in the printing industry for mass producing books such as booklets, magazines, catalogues, advertising brochures and the like. Typically, one or more sharply folded and generally pre-printed blanks or signatures are sequentially fed by a number of spaced signature feeders and gathered on a conveyor line or chain which travels past the signature feeders. The signatures are gathered into a book block and moved through one or more on-line printing stations to a stitching or binding station. The bound signatures are thereafter typically conveyed to a trimming station and a labeling station where mailing labels which are pre-printed or printed on-line are affixed. For reference to a typical binding system, see U.S. Pat. No. 5,100,116.  
           [0004]    Binding systems generally employ computer controlled production. A computer controls how the individual editions of the books are tailored or customized. This flexibility is important in satisfying the demands of a particular market or geographical destination. For instance, it may be desirable to offer certain recipients of the books various features or selected advertising depending upon their locale, income or occupation. Likewise, it may be relevant to customize books contingent upon a recipient&#39;s previous buying history. In addition, flexibility of printing external signatures or covers is important to meet postal regulations and to qualify for postage discounts.  
           [0005]    Signature feeders in particular have been developed which are able to customize individual signatures before the individual signature is fed to the binding line. See U.S. Pat. No. 5,100,116. This type of signature feeder, termed a printer feeder, includes a single signature hopper, for processing one type of signature through a printer then, feeding the individual signature of the one type to the binding line. In this arrangement, an individual signature of the type held in the hopper can be customized before it is fed to the binding line.  
         SUMMARY OF THE INVENTION  
         [0006]    The present invention provides an improved signature delivery apparatus and method for use in cooperation with a binding line. Preferably, the signature delivery apparatus is a printer feeder including a plurality of hopper feeders so that multiple types of signatures can be conveyed through a single printer feeder using a single printer. Specifically, the printer feeder includes a plurality of hoppers with corresponding feeders. A signal from the computer of the binding line is communicated to the printer feeder to determine which of the signature types to feed to the binding line. Upon receipt of the signal, the appropriate hopper feeder is activated to deliver a single signature to the binding line. Optionally, the signatures are customized with indicia by a printer before they are transported to the binding line.  
           [0007]    It is a feature of the present invention to provide an improved apparatus and method for delivering signatures to a binding line.  
           [0008]    It is another feature of the present invention to provide an apparatus and method for providing a selected one of a plurality of signature types to a binding line.  
           [0009]    It is another feature of the present invention to provide an apparatus and method for printing on a selected one of a plurality of signature types and feeding the signature to a binding line.  
           [0010]    It is another feature of the present invention to provide an improved printer feeder for use in conjunction with a binding line.  
           [0011]    It is another feature of the present invention to provide an apparatus and method for providing printed information upon a selected one of a plurality of signatures types before the signatures are fed to the binding line.  
           [0012]    It is another feature of the present invention to provide a printer feeder for a binding line that can supply a selected one of a plurality of signature types to the binding line.  
           [0013]    It is another feature of the present invention to provide a printer feeder that customizes signatures of a selected signature type wherein a single printer feeder is able to so customize a plurality of signature types.  
           [0014]    It is another feature of the present invention to provide a printer feeder with multiple signature hopper feeders.  
           [0015]    It is another feature of the present invention to provide a printer feeder having increased flexibility in feeding multiple signature types.  
           [0016]    It is another feature of the present invention to provide a printer feeder with multiple signature hopper feeders housing differing signature types and a single printer for customizing individual signatures of each signature type.  
           [0017]    Other features and advantages of the invention will become apparent to those of ordinary skill in the art upon review of the following detailed description, claims, and drawings. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0018]    [0018]FIG. 1 is a perspective view of a printer feeder embodying the invention;  
         [0019]    [0019]FIG. 2 is a top view of the printer feeder;  
         [0020]    [0020]FIG. 3 is a side elevational view of the printer feeder;  
         [0021]    [0021]FIG. 4 is a sectional view of the printer feeder;  
         [0022]    [0022]FIG. 5 is a perspective view of a hopper feeder portion of the printer feeder;  
         [0023]    [0023]FIG. 6 is a side elevational view of the hopper feeder portion of the printer feeder; and  
         [0024]    [0024]FIG. 7 is a perspective view of the printer feeder. 
     
    
       [0025]    Before one embodiment of the invention is explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced or being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and example and should not be regarded as limiting.  
       DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT  
       [0026]    Referring to FIG. 1, an apparatus for delivering signatures to a binding line is shown. The apparatus preferably is a printer feeder  10 . The printer feeder  10  is designed to be used in conjunction with a binding line, such as the binding line shown and described in U.S. Pat. No. 5,100,116, to produce books such as catalogues, magazines, brochures, periodicals, and the like. Typically, the books contain different collections of signatures for different recipients, customers or subscribers. The printer feeder  10  of the present invention replaces a signature feeder on a binding line. The printer feeder  10  may be used to replace one or more signature feeders which can be removed from the binding line when more flexibility is required. Alternatively, the printer feeder  10  may be added to a line of existing signature feeders at a desired point. It should be noted that the binding line can be of various configurations and can be a saddle stitch binding line, a perfect binding line or the like.  
         [0027]    Referring to FIGS. 1-3, the printer feeder  10  includes a frame assembly  12 . The frame assembly  12  includes a support frame  14  that is generally rectangular. The support frame  14  includes casters  16  for easy transport of the printer feeder  10  and legs  18  for leveling and stabilizing the printer feeder  10  at a desired location. A second frame or print table  20  is oriented above the support frame  14  by the legs  22 . A pair of side rails  24  extends from the print table  20 . As particularly shown in FIGS. 1 and 3, the printer feeder  10  is shown in operational engagement with a host pocket  26  of a binding line. The host pocket  26  shown is produced by Muller Martini of Switzerland, however, the printer feeder  10  can be adapted to be operational with host pockets from other manufacturers such as, for example, Heidelberg or Sitma. The print table  20  and the side rails  24  are secured to the host pocket  26 .  
         [0028]    A support rail  28  extends downwardly from each side rail  24  and is connected to a hopper frame  30 . The hopper frame  30  is supported by the support frame  14 . Preferably, the print table  20  is positioned at a height above the hopper frame  30 . However, it should be noted that the hopper frame  30  may be at the same or an elevated height relative to the print table  20 . The hopper frame  30  supports a plurality of hopper feeder assemblies  32 . Two hopper feeder assemblies  32   a  and  32   b  are shown in the figures, however, it should be noted that more than two hopper feeder assemblies  32  is contemplated and can be employed with the present invention.  
         [0029]    Referring now to FIGS. 4-6, the hopper feeder assemblies  32  are best shown. As shown, the hopper feeder assemblies  32  are identical and therefore only one will be hereafter described. However, it should be noted that the hopper feeder assemblies  32  do not have to be identical. If desired, the assemblies  32  may vary from one to the other.  
         [0030]    The hopper feeder assembly  32  includes a supply hopper  34  for supporting a stack of one type of signature. The supply hopper  34  includes a pair of corner guides  36  and a plurality of side guides  38 , all for supporting and aligning the signatures in the stack. Preferably, the corner guides  36  contain the corners of the signatures adjacent the spine. The supply hopper  34  is in operational engagement with a feeding mechanism, often referred to as an auxiliary feeder  40 . Auxiliary feeders are well known in the art and a conventional auxiliary feeders, such as that shown and described in U.S. Pat. No. 5,100,116 which is herein incorporated by reference, can be utilized in the printer feeder  10 . Accordingly, the structure and function of the auxiliary feeder will only be generally described hereafter.  
         [0031]    The feeder  40  as shown in FIGS. 4 and 5 includes a frame  42 . A shaft  44  is supported for rotation by the frame  42 . A pickup drum  46  is mounted for rotation on the shaft  44 . Preferably, the pickup drum  46  includes a pair of spaced discs  48  having thereon grippers  50 . A cam system  52  is also mounted on the shaft  44  and controls the selective opening and closing of the grippers  50 . A feed assembly  54  indexes the signatures in the supply hopper  34 .  
         [0032]    The end of the shaft  44  carries a sprocket  56  driven by a belt  58 . The belt  58  is entrained about the sprocket  56  and two lower idler sprockets  60 ,  62 . The sprocket is driven by a drive mechanism  64  which will be later described. Clockwise rotation of the shaft (with reference to FIGS. 4 and 5) will cause the feeding assembly  54  to selectively extract the bottom most signature in the stack with the grippers  50  closing to rotate the extracted signature from the supply hopper  34  via the pickup drum  46 . Once the pick up drum  46  has rotated also clockwise approximately 180 degrees, the cam system  52  effects the opening of the grippers  50  to release or drop the extracted signature onto a conveyor assembly  66 , preferably in a spine leading orientation.  
         [0033]    As shown in the drawings, all of the hopper feeder assemblies  32  are positioned above the conveyor assembly  66  so that each of the signatures extracted from the supply hoppers  34  drop onto the common conveyor assembly  66 . The conveyor assembly  66  can be any type of conveyor such as a conventional belt conveyor which transfers individual signatures in a generally horizontal orientation to the support rails  28 . It should be noted that alternatively, each hopper feeder assembly  32  could have its own adjacent conveyor, with the individual conveyors converging at a common point. A second conveyor assembly  68  thereafter picks up the signatures from the first conveyor assembly  66  and transports them generally vertically upwardly to the level of the print table  20 . The second conveyor assembly  68  can be any type of conveyor such as a conventional belt type conveyor. The hopper feeder assemblies  32  are at a lower elevation than the print table  20  so that the supply hoppers  34  can be more easily loaded with signatures.  
         [0034]    Referring now to FIGS. 1 and 4, a third conveyor assembly  70  picks up the individual signatures from the second conveyor assembly  68  and transports them generally horizontally to the host pocket  26 . The third conveyor assembly  70  can be any type of conveyor such as a conventional belt conveyor. A printing mechanism such as printer  72  is positioned above and supported by the print table  20 . The printer  72  optionally includes a registration station to register the signatures prior to printing. Such a printer  72  and registration system is shown and described in U.S. Pat. No. 5,100,116, which is herein incorporated by reference. Although not shown, the invention also contemplates the use of a second printer, either in place of or in addition to the first printer, below the level of the print table  20  which prints onto individual signatures from below the level of the print table  20 .  
         [0035]    The printer  72  prints indicia and/or customized indicia upon the individual signatures selectively fed from one of the hopper feed assemblies  32 . The printer  72  is preferably a bank of conventional ink jet print heads although other types of printing mechanisms can also be utilized. The printer  72  enables a signature selectively routed and particularly oriented upon the conveyor assembly  78  to be processed with a personalized or tailored message printed anywhere on the exposed surfaces of signature, such as with the printed indicia oriented generally transverse to the leading edge of the signature. Such printing, of the right reading type, results in customized printing being presented within a book so that it can be easily read without having to turn the book or the reader&#39;s head. However, it should be noted that the indicia can be printed in any desired orientation on the signatures.  
         [0036]    Continuing to refer to FIGS. 1 and 4, from the printer  72 , the signatures are transported by the conveyor assembly  70  to a primary feeder  74  which is adjacent to and in operational engagement with the host pocket  26 . The primary feeder  74  used with the present invention is a conventional feeder, such as the primary feeder shown and described in U.S. Pat. No. 5,110,116, which is incorporated herein by reference. The primary feeder  74  transfers the individual signatures from the conveyor assembly  70  to the binding line via the host pocket  26 .  
         [0037]    The printer feeder  10  includes the drive system  64  to operate the conveyor assemblies  66 ,  68  and  70  and the hopper feeder assemblies  32 . The drive system  64  includes a motor assembly  76  which drives a shaft  78 . A belt and pulley arrangement  80  transfers the rotational motion of the shaft to conveyor assembly  66 . A belt and pulley arrangement  82  transfers the rotational motion of the shaft  78  to the conveyor assembly  70 . A belt and pulley arrangement  84  transfers rotational motion from the conveyor assembly  66  to each hopper feed assembly  32 . Alternatively, the belt and pulley arrangements could be replaced with motors, such as servo motors.  
         [0038]    More specifically, the motor assembly  76  includes a conventional speed following motor  86  that is synchronized to the speed of the binding line using an encoder arrangement that is conventional in this art. Each of the hopper feeder assemblies  32   a  and  32   b  is in communication with the controller on the binding line, such as the conventional programmable controller shown and described in U.S. Pat. No. 5,100,116. The controller controls which and when the hopper feeder assemblies  32  are fired. For example, the controller can send a signal to enable or disable the feeding of a signature, i.e., to trigger the release of a signature from a particular hopper feeder assembly. However, it should be noted that the control of which hopper feeder assembly to be triggered can be accomplished in other ways. The controller of the binding line also oversees sending printing instructions to the printer  72 .  
         [0039]    Referring now to FIG. 7, the printer feeder  10  is shown with shields  88  to protect the moving parts of the printer feeder  10  and to protect the printer feeder operator. In operation, the printer feeder  10  is suitably positioned on a binding line. A stack of signatures of one type is loaded into the supply hopper  34  of one of the hopper feeder assemblies  32   a  and a stack of signatures of a second type is loaded into the supply hopper  34  of the other hopper feeder assembly  32   b . The motor  86  is synchronized to the binding line via the encoder arrangement and the controller of the binding line is in communication with each of the hopper feeder assemblies  32 . When a signature of one of the two types loaded into the printer feeder  10  is to be gathered on the binding line, the controller of the binding line sends a signal to appropriate hopper feeder assemblies  32  which thereafter deposits an individual signature onto the conveyor assembly  66 . The signature is conveyed by the conveyor assembly  66 , the conveyor assembly  68  and the conveyor assembly  70  to the printer  72  where the controller of the binding line instructs the printer  72  to print appropriate indicia, such as customized information, onto the individual signature. The signature is then transferred to the primary feeder  74  where is it deposited onto the binding line. As best shown in FIG. 2, the components of the printer feeder  10  are axially aligned such that the extracted signatures follow a generally straight path along line  90  to the binding line.  
         [0040]    Accordingly, the printer feeder  10  of the present invention has the ability to select multiple types of signatures, print on that selected signature, then deliver the signature to the binding line. The invention is advantageous in that instead of two printer feeders to deliver two types of signatures to a binding line, one printer feeder  10  can perform the same function. It should be noted that this is a significant cost savings in that only one printer  72  is required instead of two.  
         [0041]    As set forth above, the invention envisions a plurality of hopper feeder assemblies  32  per printer feeder  10  being utilized depending upon the requirements of the binding job being processed, and is not limited to the two hopper feeder assemblies  32   a  and  32   b  shown in the drawings. The invention also envisions the hopper feeder assemblies  32  being modular in that one printer feeder frame could accommodate, for example, one to five hopper feed assemblies, with the assemblies being added to and removed from the hopper frame as needed.  
         [0042]    The invention can also be used to process multiple types of signatures without the use of the printer  72  to customize the individual signatures.  
         [0043]    Accordingly, the foregoing description is meant to be of the preferred embodiments of the invention and exemplary only and should therefore not be deemed limitative on the scope of the invention set forth in the following claims.