Abstract:
A print target surface reforming device that makes it possible to obtain a higher reforming effect than in the prior art. A print target surface reforming device that reforms a print target surface and that is provided with: a conveyance section that is arranged more to the front than a printer on a printing line that automatically conveys a print target to the printer and performs printing, the conveyance section including on the upper surface thereof a conveyance path on which the print target is conveyed with the print target surface thereof facing upward; and a light source that is arranged so as to face the conveyance path and that emits light having a wavelength of 242 nm or less onto the print target surface of the print target that moves along the conveyance path.

Description:
TECHNICAL FIELD 
     The present invention relates to a print target surface reforming device that reforms the print target surface of a print target to make an ink easily adhere thereto at the time of printing. 
     BACKGROUND ART 
     Conventionally, as this type of print target surface reforming device, a device that brings the print target into contact with plasma or corona discharge to perform reformation (for example, see Patent Literature 1) is known. 
     RELATED ART DOCUMENTS 
     Patent Documents 
     PATENT DOCUMENT 1: Japanese Published Unexamined Patent Application No. 2003-311940 (paragraphs [0007] and [0009]) 
     SUMMARY OF INVENTION 
     Problems to be Solved by the Invention 
     However, in the conventional print target surface reforming device described above, a sufficient reforming effect cannot be obtained, and the ink for printing may be separated from the print target. 
     The present invention is made in view of the foregoing circumstances, and an object thereof is to provide a print target surface reforming device that can obtain a higher reforming effect than the conventional device. 
     Means of Solving the Problems 
     A print target surface reforming device according to a first embodiment designed to achieve the above object is arranged, in a print line where a print target is automatically transported to a printer and printing is performed, on a front side with respect to the printer and reforms a print target surface of the print target. The print target surface reforming device includes a transport portion which includes a plurality of metal rollers arranged horizontally and laterally and which includes, on an upper surface of a group of the metal rollers, a transport path along which the print target is transported with the print target surface facing upward, a rotation drive source which drives the plurality of metal rollers to rotate, a light source which is arranged opposite the transport path and which emits light of 242 nm or less to the print target surface of the print target that is moved along the transport path, a roller group lower cover which covers the group of the metal rollers from a lower side, and an ozone suction processing portion which brings an interior of the roller group lower cover into a negative pressure state to suck ozone generated by the light source, which decomposes the ozone into oxygen and which discharges the oxygen. 
     A print target surface reforming device according to a second embodiment is arranged, in a print line where a print target is automatically transported to a printer and printing is performed, on a front side with respect to the printer and reforms a print target surface of the print target. The print target surface reforming device includes a transport portion that includes a plurality of metal rollers arranged horizontally and laterally and that includes a transport path which is arranged in a position, in an upper surface of a group of the metal rollers, displaced to one end of the group of the metal rollers in a direction of a rotation shaft and along which the print target is transported with the print target surface facing upward, a rotation drive source which drives the metal rollers to rotate, a friction belt which is arranged in a position displaced to the other end of the group of the metal rollers in the direction of the rotation shaft, which is pressed by the group of the metal rollers from above or below and which receives power from the rotation drive source so as to be driven to rotate, a belt support roller which supports the friction belt from inside, and a light source which is arranged opposite the transport path and which emits light of 242 nm or less to the print target surface of the print target that is moved along the transport path. 
     A print target surface reforming device according to a third embodiment is arranged, in a print line where a print target is automatically transported to a printer and printing is performed, on a front side with respect to the printer and which reforms a print target surface of the print target. The print target surface reforming device includes a transport portion which includes, on an upper surface, a transport path along which the print target is transported with the print target surface facing upward, a light source which is arranged apposite the transport path and which emits light of 242 nm or less to the print target surface of the print target that is moved along the transport path. The transport portion includes a card feed guide having, on an upper surface, the transport path along which cards serving as a the print targets are aligned in line and are moved in sliding contact and a card feed portion that is arranged on an upstream side of the card feed guide and which feeds the cards to a side of the card feed guide. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is a side view of a print target surface reforming device according to a first embodiment of the present invention. 
         FIG. 2  is a plan view of the print target surface reforming device. 
         FIG. 3  is a plan view of a print line. 
         FIG. 4  is a plan view of a group of metal rollers. 
         FIG. 5  is a side view of the front surface side of the print line. 
         FIG. 6  is a side view of the back surface side of a transport portion. 
         FIG. 7  is a cross-sectional view of the transport portion. 
         FIG. 8  is a perspective view of a metal roller, a load support roller and a friction belt. 
         FIG. 9  is a plan view of an ozone suction processing device. 
         FIG. 10  is a side cross-sectional view of a relay box. 
         FIG. 11  is a side view of the ozone suction processing device. 
         FIG. 12  is a side view of the back surface side of the ozone suction processing device. 
         FIG. 13  is a photogram of the print target surface reforming device. 
         FIG. 14  is a photogram of the print target surface reforming device. 
         FIG. 15  is a photogram of an excimer lamp. 
         FIG. 16  is a photogram of the print target surface reforming device when it is operated. 
         FIG. 17  is a perspective view of the excimer lamp. 
         FIG. 18  is a perspective view of a print target surface reforming device according to a second embodiment. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     [First Embodiment] 
     A first embodiment according to the present invention will be described below with reference to  FIGS. 1 to 17 . As shown in  FIG. 1 , the print target surface reforming device  10  of the present embodiment includes a transport portion  30  on the upper surface of a base box  15 . As shown in  FIG. 3 , the transport portion  30  has first and second band plate walls  31  and  32  which are extended parallel to each other, and a plurality of metal rollers  33  are placed between the first and second band plate walls  31  and  32 . In the following description, the direction in which the first and second band plate walls  31  and  32  are extended is referred to as a “horizontal first direction H 1 ” or a “transport direction” as necessary, and a horizontal direction perpendicularly intersecting the “horizontal first direction H 1 ” is referred to as a “horizontal second direction H 2 .” The right side of the transport direction in  FIG. 3  is referred to as a “transport direction downstream side” and the opposite side thereto is referred to as a “transport direction upstream side,” the side of the second band plate wall  32  in the print target surface reforming device  10  is referred to as a “front side” and a surface facing the front side is referred to as a “front surface” and the side of the first band plate wall  31  is referred to as a “back side” and a surface facing the back side is referred to as a “back surface.” 
     For example, a group of the metal rollers  33  is obtained by performing quenching processing on a shaft made of stainless steel (for example, SUS440C). As shown in  FIG. 4 , the group of the metal rollers  33  is attached through bearings  33 B to the first and second band plate walls  31  and  32  in a state where an end portion on the side of the second band plate wall  32  is displaced to the transport direction downstream side with respect to an end portion on the side of the first band plate wall  31 . 
     As shown in  FIG. 3 , on both sides of the group of the metal rollers  33  in the horizontal first direction H 1 , two short metal rollers  34  which are shorter than the metal rollers  33  and are extended in the horizontal second direction H 2  are respectively arranged. As shown in  FIG. 4 , one end portion of each of the short metal rollers  34  is attached to the first band plate wall  31  through a bearing  34 B, and the other end portion is attached through the bearing  34 B to a support wall  31 C provided between the first and second band plate walls  31  and  32 . Between the lower end portions of the first and second band plate walls  31  and  32 , as shown in  FIG. 3 , lower end communication plates  31 D are laid at three places that are both end portions and an intermediate portion in the horizontal first direction H 1 , and the support wall  31 C is arranged to stand on the lower end communication plates  31 D on both ends. 
     The uppermost portions of the group of the metal rollers  33  and the group of the short metal rollers  34  are located within the same imaginary plane, and in the imaginary plane, the side of the first band plate wall  31  (more specifically, a portion exposed from a drive portion cover  14  which will be described later) with respect to substantially the center in the horizontal second direction H 2  is a transport path R 1  in the present invention. The first band plate wall  31  corresponds to a “locating member” in the present invention, and as shown in  FIG. 15 , is slightly protruded upward from the transport path R 1 . 
     As shown in  FIG. 3 , friction belts  37  are pressed from above onto the group of the metal rollers  33  in positions displaced to the end portions on the side of the second band plate wall  32  in the axial direction thereof. Specifically, the two friction belts  37  are provided, one friction belt  37  is extended so as to make contact with all the metal rollers  33  in an upstream side group ranging from the upstream side to the center portion in the transport direction and to perpendicularly intersect the center shafts of the metal rollers  33  and the other friction belt  37  is extended so as to make contact with all the remaining metal rollers  33 , in a downstream side group and to perpendicularly intersect the center shafts of the metal rollers  33 . 
     As shown in  FIG. 6 , within each of the friction belts  37 , a belt support roller  36  is provided every two metal rollers  33 . Each belt support roller  36  is arranged so as to straddle between the adjacent metal rollers  33 ,  33 , and thus the friction belt  37  is pressed onto both of the metal rollers  33 ,  33 . In this way, the friction belt  37  is sandwiched between all the metal rollers  33  and the belt support rollers  36 . When the friction belt  37  is rotated in one direction, the group of the metal rollers  33  is rotated by receiving friction power. As shown in  FIG. 7 , on the side of the second band plate wall  32  with respect to each of the friction belts  37 , a roller support protrusion wall  18 A formed in the shape of a band plate is respectively extended, and a support shaft which rotatably supports the group of the belt support rollers  36  is attached to the roller support protrusion wall  18 A in a cantilevered state. The roller support protrusion wall  18 A is supported by an unillustrated protrusion wall which overhangs horizontally from the second band plate wall  32 . 
     As shown in  FIG. 3 , in order to drive the friction belts  37 ,  37 , for each of the friction belts  37 , one motor  40  (which corresponds to a “rotation drive source” in the present invention) is provided. Each motor  40  is fixed in the center of the roller support protrusion wall  18 A in the longitudinal direction, and as shown in  FIG. 7 , has a rotation output shaft above the friction belt  37 . A drive roller  39  is fixed to the rotation output shaft, and under the drive roller  39 , as shown in  FIG. 6 , a pair of relay rollers  38 ,  38  whose diameter is smaller than that of the drive roller  39  are rotatably supported by the roller support protrusion wall  18 A. Then, the drive roller  39  makes contact with the pair of relay rollers  38 ,  38 , and thus the relay rollers  38 ,  38  are pressed, through the friction belt  37 , onto a pair of the belt support rollers  36 . In this way, the friction belt  37  and the group of the metal rollers  33  are rotated by receiving power from the motor  40 , and a frictional force for moving a print target  90  in a direction slightly inclined with respect to the horizontal first direction H 1  is provided to the print target  90  on the group of the metal rollers  33 , with the result that the print target  90  is transported in the horizontal first direction H 1  while being pressed onto the first band plate wall  31  and located. 
     As shown in  FIG. 7 , below the group of the metal rollers  33 , in a position displaced to the second band plate wall  32 , a plurality of load support rollers  35  are provided. The plurality of load support rollers  35  have a rotation shaft parallel to the group of the metal rollers  33 , are aligned, as shown in  FIG. 4 , side by side in a direction inclined with respect to the horizontal second direction H 2  as with the metal rollers  33  and form a support roller row  35 R. For each of the friction belts  37 , a pair of support roller rows  35 R,  35 R are provided. The pair of support roller rows  35 R,  35 R are arranged in positions which are offset from the respective friction belts  37  to one side and the other side of the metal rollers  33 ,  33  in the axial direction. As shown in  FIGS. 6 and 8 , each of the load support rollers  35  in each support roller row  35 R is arranged so as to straddle between the adjacent two metal rollers  33  and are pressed onto the metal rollers  33 . 
     The load support roller  35  of the present embodiment is the outer of a bearing, and a bolt which is passed through the inner of the bearing is tightened to a bearing support wall  18 B that is arranged to stand on the lower end communication plates  31 D (see  FIG. 7 ). 
     As shown in  FIG. 7 , the entire front side of the transport portion  30  in the horizontal second direction H 2  is covered with the drive portion cover  14 . Specifically, the front surface wall  14 A of the drive portion cover  14  is opposite the second band plate wall  32  from the opposite side of the first band plate wall  31 , and stands on the extended line of the front surface of the base box  15 . The back surface wall  14 B of the drive portion cover  14  has a side surface slit  14 C penetrated by the group of the metal rollers  33 , is located slightly on the side of the second band plate wall  32  between the first and second band plate walls  31 ,  32  and stands on the lower end communication plates  31 D. Furthermore, a portion between the upper ends of the front surface wall  14 A and the back surface wall  14 B is blocked by an upper surface wall  14 D, and as shown in  FIG. 13 , portions between both ends of the front surface wall  14 A and the back surface wall  14 B in the longitudinal direction are blocked by side surface walls  14 S,  14 S. In this way, the entire front side of the transport portion  30  in the horizontal second direction H 2  is covered with the drive portion cover  14 . 
     As shown in  FIG. 5 , both end portions of the transport portion  30  in the horizontal first direction H 1  are protruded from the base box  15 , and the entire transport portion  30  other than both end portions is placed on the base box  15 . The lower surfaces of the portions of the transport portion  30  protruded from the base box  15  in the horizontal first direction H 1  are blocked by the lower end communication plates  31 D,  31 D described previously (see  FIG. 6 ). The end surfaces of the transport portion  30  which face the horizontal first direction H 1  are, as shown in  FIG. 14 , blocked by the side surface walls  14 S described previously and end portion covers  14 H,  14 H laid between the first and second band plate walls  31  and  32  and the back surface wall  14 B. 
     As shown in  FIG. 5 , the base box  15  has a rectangular parallelepiped structure, and includes casters  19 A in the four corners of the lower surface and extendable support legs  19 B. When the support legs  19 B are contracted, the base box  15  can be moved with the casters  19 A whereas when the support legs  19 B are extended, the base box  15  can be fixed to a desired position. As will be described in detail later, as shown in  FIG. 14 , the substantially entire back surface of the base box  15  is open, and the substantially entire upper surface of the base box  15  other than the upstream side portion in the transport direction is open. Furthermore, in the front surface of the base box  15 , a pair of front surface doors  15 T,  15 T aligned laterally are provided, as shown in  FIG. 13 , a front surface protrusion portion  16  is protruded from an upper portion of the front surface and an operation panel  16 P is provided on the front surface protrusion portion  16 . 
     The interior of the base box  15  is vertically divided into two parts with a shelf plate  15 B, and on the shelf plate  15 B, an ozone suction processing device  50  (which corresponds to an “ozone suction processing portion” in the invention) is arranged. As shown in  FIG. 9 , the ozone suction processing device  50  has a structure in which a suction pump  51  is coupled to a relay box  53 . The relay box  53  is formed in the shape of a rectangular parallelepiped which is long in the horizontal first direction H 1 . As shown in  FIG. 11 , the upper surface of the relay box  53  is flush with the upper surface of the entire base box  15 , and in the upper surface, an upper surface opening  50 K is formed on the front side with respect to an intermediate portion in the horizontal second direction H 2 . The opening edge of the upper surface opening  50 K in the relay box  53  is attached to an opening (hereinafter referred to as a “lower surface opening of the transport portion  30 ”) between the lower end portions of the first band plate wall  31  of the transport portion  30  and the back surface wall  14 B of the drive portion cover  14 . As shown in  FIG. 5 , the relay box  53  is arranged in a position displaced to the downstream side of the transport portion  30  in the transport direction (the horizontal first direction H 1 ), and the lower surface opening of the transport portion  30  except a portion coupled to the relay box  53  is blocked by the lower end communication plates  31 D described above and a blocking plate  15 D (see  FIG. 6 ). 
     In the present embodiment, the first band plate wall  31 , the side surface wall  14 S of the drive portion cover  14 , the end portion cover  14 H, the lower end communication plate  31 D and the blocking plate  15 D described above form a “roller group lower cover” in the present invention. 
     As shown in  FIG. 10 , within the relay box  53 , an internal duct.  55  is provided below the upper surface opening  50 K. The internal duct  55  is formed with a top plate  55 B which overhangs horizontally backward from an intermediate position of a front surface wall  53 A in an up/down direction within the relay box  53  and a standing plate  55 C which blocks a portion between the top end of the top plate  55 B and the bottom surface within the relay box  53 , and as shown in  FIG. 9 , is extended entirely in the horizontal first direction H 1  within the relay box  53 . At three portions of the standing plate  55 C in the horizontal first direction H 1 , through holes  55 A are formed, and the through holes  55 A,  55 A on both sides are covered with ozone decomposition units  56 ,  56 . The interior of the ozone decomposition unit  56  has a filter structure in which a catalyst is fixed, and ozone is passed through the ozone decomposition unit  56  so as to be decomposed into oxygen. 
     The through hole  55 A in the center of the standing plate  55 C is blocked by a lid member  55 T. In a portion of the front surface wall  53 A of the relay box  53  which faces the inside of the internal duct  55 , a through hole  55 A is also formed by penetrating the portion, and an opening/closing valve  57  is attached thereto. The degree of opening of the opening/closing valve  57  can be changed by the operation of a handle  57 H provided with the opening/closing valve  57 . A tube attachment nozzle  53 N is protruded from the outer surface of a back surface wall  53 B of the relay box  53 , and an exhaust tube  11 F extended from an excimer lamp  11  (which corresponds to a “light source” in the present invention) to be described later is attached thereto. 
     As shown in  FIG. 9 , the suction pump  51  is arranged on the upstream side of the relay box  53  in the transport direction. On the other hand, as shown in  FIG. 12 , a relay nozzle  53 M is protruded from a portion of a side wall  53 S on the upstream side of the relay box  53  in the transport direction that faces the interior of the internal duct  55 , and the suction port of the suction pump  51  is attached thereto through a relay pipe  54 . As shown in  FIG. 9 , an exhaust duct  52  is attached to the discharge port of the suction pump  51 , and is extended close to an opening in the back surface of the base box  15 . When the suction pump  51  is operated, a gas in a space below the group of the metal rollers  33  and a gas within the excimer lamp  11  are collected into the relay box  53 , and furthermore, they are passed from the ozone decomposition units  56  through the internal duct  55 , are sucked by the suction pump  51 , are passed through the exhaust duct  52  and are discharged to the outside of the base box  15 . 
     As shown in  FIG. 11 , in the upper surface of the relay box  53 , a box upper surface stage  13  is attached to the back of the upper surface opening  50 K. The box upper surface stage  13  is formed in the shape of a rectangular tube and is extended over the entire ozone suction processing device  50  in the horizontal first direction H 1 . As shown in  FIG. 15 , the upper surface of the box upper surface stage  13  is located slightly upward of the upper surface of the first band plate wall  31 . 
     As shown in  FIG. 9 , link mechanisms  60 ,  60  are assembled to both sides of the box upper surface stage  13  in the horizontal first direction H 1  within the base box  15 . The lower end portions of cover support columns  61 ,  61  extending in the up/down direction are attached to the rotation ends of the link mechanisms  60 ,  60 , and when the cover support columns  61 ,  61  are moved vertically so as to draw an arc path in a state where the cover support columns  61 ,  61  maintain an upright position and are located at the lower end of a vertical movable range, the cover support columns  61 ,  61  are moved forward as compared with the case where they are located at an upper end (see  FIGS. 14 and 16 ). 
     As shown in  FIG. 14 , a lamp cover  12  is attached to the upper end portions of the cover support columns  61 ,  61 . The entire lower surface of the lamp cover  12  is open, and the lamp cover  12  is formed in the shape of a rectangular parallelepiped which is extended in the horizontal first direction H 1 . The excimer lamp  11  is stored within the lamp cover  12 . The excimer lamp  11  is, for example, an RF discharge excimer lamp which emits light of 172 nm, which is made by Hamamatsu Photonics K.K. and which has a manufacturing number of L12431, is formed, as shown in  FIG. 15 , in the shape of a rectangular parallelepiped (see  FIG. 17 ) which is slightly smaller than the lamp cover  12  extending in the horizontal first direction H 1  and has, in its lower surface, a rectangular light emission portion  11 A extending in the horizontal first direction H 1 . Furthermore, in the excimer lamp  11 , a rotation shaft  11 J (see  FIG. 2 ) provided in the center of the upper surface is rotatably coupled to the ceiling portion of the lamp cover  12 . The lower surface of the excimer lamp  11  and the lower surface of the lamp cover  12  are arranged so as to be substantially flush with each other. 
     As shown in  FIG. 14 , in a side portion wall  12 S of the lamp cover  12  on the upstream side in the transport direction, a slit  12 G extended in the horizontal second direction H 2  is formed in a position displaced upward, and an operation bar  11 B extended from the excimer lamp  11  is protruded through the slit  12 G to the outside of the lamp cover  12 . A lever  12 T is attached to the end portion of the operation bar  11 B. The operation bar  11 B is operated, and thus the excimer lamp  11  can be pivoted from outside the lamp cover  12 , and the lever  12 T is rotated in a predetermined direction, and thus the excimer lamp  11  can be fixed to an arbitrary pivot position. In the present embodiment, the lever  12 T, the operation bar  11 B and the rotation shaft  11 J described above form a “light reception range adjustment mechanism” in the present invention. 
     As shown in  FIG. 15 , when the lamp cover  12  is arranged together with the cover support columns  61 ,  61  in the upper end position of the vertical movable range, the excimer lamp  11  is located immediately above the box upper surface stage  13 . As shown in  FIG. 16 , when the lamp cover  12  is arranged together with the cover support columns  61 ,  61  in the lower end position of the vertical movable range, the light emission portion  11 A of the excimer lamp  11  is, located immediately above the group of the metal rollers  33 , and part of the excimer lamp  11  other than light emission portion  11 A is located immediately above the box upper surface stage  13 . Here, between the lamp cover  12  and the excimer lamp  11  and the group of the metal rollers  33 , a slight gap is formed through which the print target  90  can be passed without contact with the excimer lamp  11  and the lamp cover  12 . As shown in  FIG. 2 , when the longitudinal direction of the light emission portion  11 A is arranged parallel to the horizontal first direction H 1 , in the horizontal second direction H 2 , a gap is formed between the first band plate wall  31  and the light emission portion  11 A whereas when the excimer lamp  11  is arranged at an end portion of a pivot range, in the horizontal second direction H 2 , one end corner portion (see a symbol “P 1 ” in  FIG. 2 ) of the light emission portion  11 A is adjacent to a surface of the first band plate wall  31  which faces the side of the group of the metal rollers  33 , and the other end corner portion of the light emission portion  11 A is separate from the first band plate wall  31 . 
     As shown in  FIG. 15 , a power supply cable  11 C and a gas tube  11 D for supplying a cooling gas are connected to the end surface of the excimer lamp  11  on the downstream side in the transport direction. The power supply cable  11 C and the gas tube  11 D are drawn through a first window  12 E formed in the side portion wall  12 S of the lamp cover  12  to the outside. As shown in  FIG. 14 , an exhaust tube  11 F for exhausting the cooling gas passed through the excimer lamp  11  is connected to the end surface of the excimer lamp  11  on the upstream side in the transport direction. The exhaust tube  11 F is drawn through a second window  12 F formed in the side portion wall  12 S of the lamp cover  12  to the outside, and is connected to the tube attachment nozzle  53 N of the relay box  53  described above. 
     The configuration of the print target surface reforming device  10  of the present embodiment has been described above. The action effect of the print target surface reforming device  10  will now be described. As shown in  FIG. 3 , in a print line  80 , for example, the print target surface reforming device  10  is arranged between a feeder  81  and a printer  82 . The print target  90  (see  FIG. 2 ) to which the feeder  81  supplies is, for example, a card that is made of resin or paper (for example, a credit card or a membership card, etc.), and a plurality of print targets  90  are stacked on the feeder  81 . The feeder  81  draws the print targets  90  one by one from the lower end portion of a group of the print targets  90 , and provides the print target  90  onto the group of the metal rollers  33  in the print target surface reforming device  10 . On the other hand, the printer  82  is, for example, an inkjet type, receives the print targets  90  one by one from the print target surface reforming device  10 , applies, for example, an ultraviolet-curable ink to the upper surface of the print target  90  and prints predetermined information. 
     In order for the print target surface reforming device  10  to be used, as shown in  FIG. 16 , in a state where the excimer lamp  11  is overlaid on the group of the metal rollers  33 , the suction pump  51  (see  FIG. 9 ) is started up, with the result that the space below the group of the metal rollers  33  is brought into a negative pressure state. Here, the degree of opening of the opening/closing valve  57  is changed to adjust the pressure below the group of the metal rollers  33 , the gas above the entire group of the metal rollers  33  and the gas within the lamp cover  12  are passed through a gap between the adjacent metal rollers  33 ,  33  and thus the pressure is changed to such a pressure that the gasses can be gently sucked into the area below the group of the metal rollers  33 . Then, the motors  40 ,  40  are started up to drive and rotate the metal rollers  33 , and the excimer lamp  11  is finally started up. In this way, the preparation of the print target surface reforming device  10  is completed. 
     Thereafter, the feeder  81  and the printer  82  are started up. Then, the print targets  90  are provided one by one from the feeder  81  to the upstream side of the group of the metal rollers  33  in the print target surface reforming device  10 . The print target  90  provided to the print target surface reforming device  10  receives, from the group of the metal rollers  33 , frictional power which is inclined obliquely forward with respect to the horizontal first direction H 1 , and is moved below the excimer lamp  11  in a state where one side surface is pressed onto the first band plate wall  31 . The print target  90  receives light emitted from the light emission portion  11 A of the excimer lamp  11 , and thus the print target surface  91  of the print target  90  is reformed. The print target  90  which is passed through the excimer lamp  11  is passed to the printer  82  from the end portion of the group of the metal rollers  33  on the downstream side, and the printer  82  applies the ink to the reformed print target surface  91  of the print target  90  to print the predetermined information and applies ultraviolet rays to the ink to cure the ink. In this way, the printing on the print target  90  is completed. 
     As described above, in the print target surface reforming device  10  of the present embodiment, the light of the excimer lamp  11  is irradiated to the print target surface  91  of the print target  90 , and thus it is possible to obtain a higher reforming effect than a conventional one. 
     With light of 242 nm or less, it is possible to perform the reformation, and as the wavelength thereof is decreased, the efficiency of the reformation is enhanced. However, when the wavelength is 160 nm or less, permeability to synthetic quartz glass is significantly lowered, and thus it is necessary to use, as a lamp envelope, a crystal material which is expensive and has poor processability. By contrast, in the present embodiment, since the excimer lamp  11  which emits the light of 172 nm is used, it is possible to reduce an increase in the cost and to enhance the efficiency of the reformation. 
     Although the excimer lamp  11  generates ozone while being operated, since in the print target surface reforming device  10  of the present embodiment, such ozone is sucked by the ozone suction processing device  50 , is decomposed into oxygen and is discharged, the excimer lamp  11  can be used by being assembled into the print line  80  without worry about harm to the human body. Since the ozone is sucked through the gap between the metal rollers  33 ,  33  feeding the print target  90 , the print target  90  can be pressed onto the group of the metal rollers  33  by the suction, and the friction between the print target  90  and the metal rollers  33  is increased, with the result that the print target  90  is stably transported. Furthermore, since the print target  90  is transported with one side surface of the print target  90  pressed onto the first band plate wall  31  extended along the side portion of the transport path R 1 , the position of the print target  90  which has been passed through the print target surface reforming device  10  is stabilized, and the print position of the print target  90  in the printer  82  is also stabilized. 
     Since a plurality of metal rollers  33  are driven to rotate by the frictional power from the friction belt  37 , as compared with a configuration in which a gear and a timing belt are provided for each of the metal rollers  33 , the print target surface reforming device  10  can be manufactured inexpensively. Furthermore, with the load support rollers  35  below the metal rollers  33 , it is possible to reduce a load received by the metal rollers  33  from the friction belt  37 . In the print target surface reforming device  10  of the present embodiment, the excimer lamp  11  is pivoted, and thus the range of the transport path R 1  in a width direction which receives the light from the excimer lamp  11  can be changed, with the result that it is possible to easily respond to a plurality of types of print targets  90 . 
     [Second Embodiment] 
     The print target surface reforming device  10 V of the present embodiment includes a card feed guide  72  which is fixed to the lower surface of the same excimer lamp  11  as in the first embodiment as shown in  FIG. 18 . The card feed guide  72  is formed, for example, by bending a stainless steel sheet metal in the shape of a rectangular groove, and its overall length is longer than that of the excimer lamp  11 . The card feed guide  72  covers the light emission portion  11 A of the excimer lamp  11 , and both end portions thereof are protruded from both end portions of the excimer lamp  11  in the longitudinal direction. At one end portion of the excimer lamp  11 , a card feed portion  73  is provided that sandwiches, in a vertical direction, a card serving as the print target  90  between a plurality of transport rollers  33 V and a plurality of transport auxiliary rollers  37 V and that feeds the card. The card feed portion  73  and the card feed guide  72  form a “transport portion” in the present invention. 
     In a side portion of the card feed guide  72 , a plurality of through holes are formed along the longitudinal direction, and tubes  70  are coupled to them from the outside. The tubes  70  and the exhaust tube  11 F extended from the excimer lamp  11  are collectively connected to one end of the same ozone decomposition unit  56  as in the first embodiment, and furthermore, the suction pump  51  is connected to the other end of the ozone decomposition unit  56 . When the ozone decomposition unit  56  is operated, ozone within the excimer lamp  11  and ozone within the card feed guide  72  are passed through the ozone decomposition unit  56  and are decomposed into oxygen. 
     The print target surface reforming device  10 V of the present embodiment is arranged between the feeder  81  and the printer  82  in the print line  80  described in the first embodiment, and thus it is possible to achieve the same action effect as in the print target surface reforming device  10  of the first embodiment. 
     Other Embodiments 
     The present invention is not limited to the embodiment described above, and for example, embodiments which will be described below are also included in the technical scope of the present invention, and furthermore, in addition to the following embodiments, various modifications are possible without departing from the spirit. 
     (1) Although in the embodiment described above, the material of the metal roller  33  or the card feed guide  72  is stainless steel, it may be gold, platinum, titanium or the like. 
     (2) Although in the embodiment described above, the light source is the excimer lamp, as long as the light source emits light of 242 nm or less, for example, a low-pressure mercury lamp, a deuterium lamp or the like may be used. 
     (3) Although in the embodiment described above, the decomposition of ozone into oxygen is performed by a configuration with the catalyst, it may be performed by a configuration with, for example, activated carbon, light of 242 to 320 nm, heating, water, a chemical solution or the like. 
     (4) Although in the embodiment described above, ozone is decomposed into oxygen and is thereafter discharged, a configuration of providing duct facilities or the like to discharge ozone as it is to the atmosphere may be used. 
     REFERENCE SIGNS LIST 
       10 ,  10 V: Print target surface reforming device 
       11 : Excimer lamp (light source) 
       11 A: Light emission portion 
       12 : Lamp cover 
       30 : Transport portion 
       31 : First band plate wall (locating member) 
       33 : Metal roller 
       35 : Load support roller 
       36 : Belt support roller 
       37 : Friction belt 
       40 : Motor (rotation drive source) 
       50 : Ozone suction processing device (ozone suction processing portion) 
       51 : Suction pump 
       52 : Exhaust duct 
       56 : Ozone decomposition unit 
       72 : Card feed guide (transport portion) 
       73 : Card feed portion (transport portion) 
       80 : Print line 
       82 : Printer 
       90 : Print target 
       91 : Print target surface 
     R 1 : Transport path