Printing machine

Information

  • Patent Grant
  • 6311616
  • Patent Number
    6,311,616
  • Date Filed
    Monday, April 17, 2000
    24 years ago
  • Date Issued
    Tuesday, November 6, 2001
    22 years ago
Abstract
A stamp cylinder, upstream number cylinder, downstream number cylinder and a paper discharge cylinder are respectively arranged with respect to an impression cylinder so that a distance between the stamp cylinder and the upstream number cylinder has a length equal to or more than a length of a sheet paper. Also, a distance between the downstream cylinder and the paper discharge cylinder has a length equal to or more than a length of a sheet paper. Further, a distance between the stamp cylinder and the downstream number cylinder has a length equal to or less than a length obtained by adding a length of the effective surface of the impression cylinder to twice a length of the notch portion of the impression cylinder.
Description




BACKGROUND OF THE INVENTION




1. Field of the Invention




The present invention relates to a printing machine, and particularly to a printing machine which is effective in an application to a case of printing a bill, a paper money and the like.




2. Description of the Prior Art





FIG. 5

shows an outline of a structure of an embodiment of a conventional printing machine which prints a bill and a paper money.




As shown in

FIG. 5

, a paper stack table


111


is provided in a paper supply portion


110


. A feeder board


112


which supplies a sheet paper


100


on the paper stack table


111


to a printing portion


120


one by one is provided in the paper supply portion


110


. A swing apparatus


113


which transfers the sheet paper to a transfer cylinder


121




a


is provided in a front end of the feeder board


112


.




The transfer cylinder


121




a


is oppositely brought into contact with an impression cylinder


122




a


in the printing portion


120


via transfer cylinders


121




b


and


121




c


. A stamp cylinder


123


for printing a stamp is oppositely brought into contact with the impression cylinder


122




a


. A group of rollers of an ink supply apparatus


124


are oppositely brought into contact with the stamp cylinder


123


. Number cylinders


125




a


and


127




a


for printing a number are oppositely brought into contact with the impression cylinder


122




a


. A group of rollers of an ink supply apparatus


126




a


are oppositely brought into contact with the number cylinders


125




a


and


127




a


. A transfer cylinder


121




d


is oppositely brought into contact with the impression cylinder


122




a


. An impression cylinder


122




b


is oppositely brought into contact with the transfer cylinder


121




d


. Number cylinders


125




b


and


127




b


for printing a number are oppositely brought into contact with the impression cylinder


122




b


. A group of rollers of an ink supply apparatus


126




b


are oppositely brought into contact with the number cylinders


125




b


and


127




b


. A paper discharge cylinder


129


is oppositely brought into contact with the impression cylinder


122




b.






A sprocket


131


is coaxially provided in the paper discharge cylinder


129


. Further, a sprocket


132


is provided in a paper discharge portion


130


. A paper discharge chain


133


is wound and extended between the sprockets


131


and


132


. A plurality of paper discharge gripper


134


are provided in the paper discharge chain


133


at a predetermined interval. Piles


135




a


to


135




c


on which the printed sheet papers


100


are stacked are provided in the paper discharge portion


130


.




In the printing machine structured in the manner mentioned above, when the sheet paper


100


is transferred from the paper stack table


111


of the paper supply portion


110


to the transfer cylinder


121




a


via the feeder board


112


, the sheet paper


100


is transferred to the impression cylinder


122




a


of the printing portion


120


via the transfer cylinders


121




b


and


121




c


, is printed the stamp by the stamp cylinder


123


, is printed the number by the number cylinders


125




a


and


127




a


, is subsequently transferred to the impression cylinder


122




b


via the transfer cylinder


121




d


, is printed the number by the number cylinders


125




b


and


127




b


, thereafter is supplied to the paper discharge gripper


134


of the paper discharge portion


130


via the paper discharge cylinder


129


, is transferred together with a travel of the paper discharge chain


133


, and is discharged to the pile


135




a


to


135




c.






In the conventional printing machine as mentioned above, there has been the following problems.




(1) Since the number is printed by the number cylinder


125




a


while the stamp is printed on the sheet paper


100


by the stamp cylinder


123


, the printing by the stamp cylinder


123


is slightly shifted due to a little vibration generated at a time of printing the number by the number cylinder


125




a


, so that there is a risk of generating a lost paper.




(2) Since the sheet paper


100


is transferred from the impression cylinders


122




a


and


122




b


to the transfer cylinder


121




d


or the paper discharge cylinder


129


while the number is printed on the sheet paper


100


by the number cylinders


127




a


and


127




b


, a terminal end side of the sheet paper


100


is tensioned by the number cylinders


127




a


and


127




b


by an ink during a printing operation of the ink at a time of transferring and the transfer cylinder


121




d


and the paper discharge cylinder


129


ail to grip the sheet paper


100


, thereby dropping down the sheet paper


100


. Otherwise, the terminal end side of the sheet paper


100


is tensioned to a side of the transfer cylinder


121




d


or a side of the paper discharge cylinder


129


during a printing operation of the number and a failure of printing the number is generated, so that there is a risk of generating a lost paper.




Accordingly, there has been desired a printing machine which can prevent a sheet-like material such as the sheet paper


100


from being lost as much as possible.




SUMMARY OF THE INVENTION




In order to solve the problems mentioned above, in accordance with the present invention, there is provided a printing machine comprising:




a rotatable impression cylinder which has a plurality of effective surfaces for holding a sheet-like material along a peripheral direction at a predetermined interval;




a first printing portion which is oppositely brought into contact with the impression cylinder and applies a printing to the sheet-like material;




a second printing portion which is oppositely brought into contact with the impression cylinder in a downstream side in a rotational direction of the impression cylinder with respect to an oppositely contacting position of the first printing portion with the impression cylinder and applies a printing to the sheet-like material;




a number printing portion which is oppositely brought into contact with the impression cylinder in a downstream side in the rotational direction of the impression cylinder with respect to an oppositely contacting position of the second printing portion with the impression cylinder and applies a number printing to the sheet-like material; and




a transfer cylinder which is oppositely brought into contact with the impression cylinder in a downstream side in a rotational direction of the impression cylinder with respect to an oppositely contacting position of the number printing portion with the impression cylinder and receives the sheet-like material from the impression cylinder,




wherein the first printing portion, the second printing portion, the number printing portion and the transfer cylinder are respectively arranged so that a transfer distance of the sheet-like material which is performed by the impression cylinder between the oppositely contacting position between the first printing portion and the impression cylinder and the oppositely contacting position between the second printing portion and the impression cylinder has a length equal to or more than a length in a transfer direction of the printing surface of the sheet-like material, a transfer distance of the sheet-like material which is performed by the impression cylinder between the oppositely contacting position between the number printing portion and the impression cylinder and the oppositely contacting position between the transfer cylinder and the impression cylinder has a length equal to or more than the length in a transfer direction of the printing surface of the sheet-like material, and a transfer distance of the sheet-like material which is performed by the impression cylinder between the oppositely contacting position between the first printing portion and the impression cylinder and the oppositely contacting position between the number printing portion and the impression cylinder has a length equal to or less than a length obtained by adding twice a length between the adjacent effective surfaces of the impression cylinder to a length of the effective surface.




In the printing machine mentioned above, it is characterized in that the impression cylinder is a plural diameter cylinder which has a plurality of effective surfaces for holding the sheet-like material along a peripheral direction at a predetermined interval, and each of cylinders in the first printing portion, the second printing portion and the number printing portion which are oppositely brought into contact with the impression cylinder is a single surface cylinder which has a single effective surface.




In the printing machine mentioned above, it is characterized in that the second printing portion applies a number printing to the sheet-like material.




In the printing machine mentioned above, it is characterized in that an angle formed by a line obtained by linearly connecting the oppositely contacting position between the first printing portion and the impression cylinder to an axial center of the impression cylinder, and a line obtained by linearly connecting the oppositely contacting position between the number printing portion and the impression cylinder to the axial center of the impression cylinder is equal to or less than 180 degrees.











BRIEF DESCRIPTION OF THE DRAWINGS





FIG. 1

is a schematic view of an outline of a whole of an embodiment of a printing machine in accordance with the present invention;





FIG. 2

is an enlarged view which extracts a main portion of

FIG. 1

;





FIG. 3

is a schematic view of an outline of a whole of another embodiment of a printing machine in accordance with the present invention;





FIG. 4

is an enlarged view which extracts a main portion of

FIG. 3

; and





FIG. 5

is a schematic view of an outline of a whole of an embodiment of a printing machine in accordance with the conventional art.











DESCRIPTION OF THE PREFERRED EMBODIMENTS




A description will be given of an embodiment of a printing machine in accordance with the present invention with reference to

FIGS. 1 and 2

. In this case,

FIG. 1

is a schematic view of an outline of a whole of the printing machine and

FIG. 2

is an enlarged view which extracts a main portion of FIG.


1


.




As shown in

FIG. 1

, a paper stack table


11


is provided in a paper supply portion


10


. A feeder board


12


which supplies a sheet paper


100


corresponding to a sheet-like material on the paper stack table


11


to a printing portion


20


one by one is provided in the paper supply portion


10


. A swing apparatus


13


which transfers the sheet paper to a transfer cylinder


21




a


is provided in a front end of the feeder board


12


.




The transfer cylinder


21




a


is oppositely brought into contact with an impression cylinder


22


in the printing portion


20


via a transfer cylinder


21




b


. A letterpress stamp cylinder


23


for printing a stamp is oppositely brought into contact at a downstream side of the transfer cylinder


21




a


in a rotational direction of the impression cylinder


22


so that it can move near or move apart from the impression cylinder


22


(impression-on, impression throw-off). A group of rollers of an ink supply apparatus


24


are oppositely brought into contact with the stamp cylinder


23


. A number cylinder


25


for printing a number is oppositely brought into contact with a downstream side of the stamp cylinder


23


in a rotational direction of the impression cylinder


22


so that it can move near or move apart from the impression cylinder


22


(impression-on, impression throw-off). A group of rollers of an ink supply apparatus


26


are oppositely brought into contact with the number cylinder


25


. A number cylinder


27


for printing a number is oppositely brought into contact with a downstream side of the number cylinder


25


in a rotational direction of the impression cylinder


22


, so that it can move near or move apart from the impression cylinder


22


(impression-on, impression throw-off). A group of rollers of an ink supply apparatus


28


are oppositely brought into contact at the number cylinder


27


.




A paper discharge cylinder


29


corresponding to a transfer cylinder is oppositely brought into contact with a downstream side of the number cylinder


27


in a rotational direction of the impression cylinder


22


.




In the present embodiment structured in this manner, a first printing portion is constituted by the stamp cylinder


23


, the ink supply apparatus


24


and the like, a second printing portion is constituted by the number cylinder


25


, the ink supply apparatus


26


and the like, and a number printing portion is constituted by the number cylinder


27


, the ink supply apparatus


28


and the like.




In this case, the impression cylinder


22


is constituted by a plural diameter cylinder (a double diameter cylinder in the present embodiment) in which a plurality of effective surfaces (two surfaces in the present embodiment) (a black-painted portion in

FIGS. 1 and 2

, having substantially the same length as a length in a vertical direction of the sheet paper


100


) for holding the sheet paper


100


are provided along a peripheral direction at a predetermined interval, and a notch portion provided with a gripping gripper and the like is formed between the adjacent effective surfaces. On the contrary, the transfer cylinders


21




a


and


21




b


, the stamp cylinder


23


and the number cylinders


25


and


27


are constituted by a single surface cylinder which has one effective surface and one notch portion.




Further, as shown in

FIG. 2

, a transfer distance L


1


of the sheet paper


100


which is performed by the impression cylinder


22


between the oppositely contacting position between the stamp cylinder


23


and the impression cylinder


22


and the oppositely contacting position between the number cylinder


25


and the impression cylinder


22


has a length equal to or more than a length L


0


in a transfer direction (a vertical direction) of a printing surface of the sheet paper


100


(L


1


≧L


0


), a transfer distance L


2


of the sheet paper


100


which is performed by the impression cylinder


22


between the oppositely contacting position between the number cylinder


27


and the impression cylinder


22


and the oppositely contacting position between the paper discharge cylinder


29


and the impression cylinder


22


has a length equal to or more than a length L


0


in the transfer direction of the printing surface of the sheet paper


100


(L


2


≧L


0


), and a transfer distance L


3


of the sheet paper


100


which is performed by the impression cylinder


22


between the oppositely contacting position between the stamp cylinder


23


and the impression cylinder


22


and the oppositely contacting position between the number cylinder


27


and the impression cylinder


22


has a length equal to or less than a length (La+2Lb) obtained by adding a length La of the effective surface of the impression cylinder


22


to twice a length La of the notch portion (L


3


≦La+2Lb). That is, after completion of printing a number on a certain sheet paper


100


by means of the number cylinder


27


, printing a seal on a sheet paper subsequent to the next different sheet paper


100


by means of the stamp cylinder


23


is started. Therefore, the stamp for the next, different sheet paper


100


is not performed by means of the stamp cylinder


23


when a number is being printed on the certain sheet paper


100


by means of the number cylinder


27


.




In the printing machine structured in the manner mentioned above, when the sheet paper


100


is transferred from the paper stack table


11


of the paper supply portion


10


to the transfer cylinder


21




a


via the feeder board


12


, the sheet paper


100


is transferred to the impression cylinder


22


of the printing portion


20


via the transfer cylinder


21




b


, is printed the stamp by the stamp cylinder


23


, is printed the number by the number cylinders


25


and


27


, thereafter is gripped to the paper discharge gripper of the paper discharge portion


30


via the paper discharge cylinder


29


, is transferred together with a travel of the paper discharge chain


33


, and is discharged to the pile


35




a


and


35




b.






Here, as described above, since the transfer distance L


1


of the sheet paper


100


which is performed by the impression cylinder


22


between the oppositely contacting position between the stamp cylinder


23


and the impression cylinder


22


and the oppositely contacting position between the number cylinder


25


and the impression cylinder


22


has a length equal to or more than a length L


0


in the transfer direction of a printing surface of the sheet paper


100


(L


1


≧L


0


), the number is printed on the sheet paper


100


by the number cylinder


25


after the stamp is printed on the sheet paper


100


by the stamp cylinder


23


. Accordingly, the printing operation of the number by the number cylinder


25


is not affected by a slight vibration at a time of printing by the stamp cylinder


23


, whereby it is possible to prevent a lost paper from being generated.




Further, since a transfer distance L


2


of the sheet paper


100


which is performed by the impression cylinder


22


between the oppositely contacting position between the number cylinder


27


and the impression cylinder


22


and the oppositely contacting position between the paper discharge cylinder


29


and the impression cylinder


22


has a length equal to or more than a length L


0


in the transfer direction of the printing surface of the sheet paper


100


(L


2


≧L


0


), the sheet paper is transferred and gripped from the impression cylinder


22


to the paper discharge cylinder


29


after the number is printed on the sheet paper


100


by the number cylinder


27


. Accordingly, since a terminal end side of the sheet paper


100


is not tensioned to the side of the number cylinder


27


by an ink during the number printing, the paper discharge cylinder


29


can securely grip the sheet paper


100


and since the terminal end side of the sheet paper


100


is not tensioned to the side of the paper discharge cylinder


29


during the number printing, the number printing can be securely performed, whereby it is possible to prevent a lost paper from being generated.




Further, since a transfer distance L


3


of the sheet paper


100


which is performed by the impression cylinder


22


between the oppositely contacting position between the stamp cylinder


23


and the impression cylinder


22


and the oppositely contacting position between the number cylinder


27


and the impression cylinder


22


has a length equal to or less than a length (La+2Lb) obtained by adding a length Lb of the effective surface of the impression cylinder


22


to twice a length Lb of the notch portion (L


3


<La+2Lb). That is, after completion of printing a number on a certain sheet paper


100


by means of the number cylinder


27


, printing a seal on a sheet paper subsequent to the next different sheet paper


100


by means of the stamp cylinder


23


is started. Therefore, the stamp for the next, different sheet paper


100


is not performed by means of the stamp cylinder


23


when a number is being printed on the certain sheet paper


100


by means of the number cylinder


27


.




Accordingly, for example, even when the number cylinder


27


generates a poor number transfer, it is possible to easily stop the sheet paper


100


two sheet after the sheet paper


100


having the poor number transfer without printing the stamp and the number by immediately retracting (impression throw-off) the stamp cylinder


23


and the number cylinders


25


and


27


. Further, since it is possible to stop the printing at a time when a good number printing is finished by the number cylinder


25


with respect to the sheet paper


100


one sheet after the sheet paper having the poor number transfer, it is possible to treat the sheet paper as a normal paper not as a lost paper only by printing the number by means of the number cylinder


27


after inspecting and correcting the number cylinder


27


. Accordingly, it is possible to restrict the sheet paper


100


having the poor printing to only one sheet, so that it is possible to restrict the generation of the lost paper.




Accordingly, in accordance with the printing machine mentioned above, it is possible to restrict the loss of the sheet paper


100


as much as possible.




Incidentally, in the above embodiment, the structure is made such that the stamp is directly printed from the letterpress printing cylinder


23


. However, the structure may be made, for example, such that the stamp is offset printed from a plate cylinder


23




b


via a blanket cylinder


23




a


. In this case, in place of the oppositely contacting position between the stamp cylinder


23


and the impression cylinder


22


, as shown in

FIG. 4

, an oppositely contacting position between the blanket cylinder


23




a


and the impression cylinder


22


should be considered.




Further, in the above embodiment, the structure is made such that the paper discharge cylinder


29


is applied to the transfer cylinder, thereby discharging the sheet paper


100


from the paper discharge cylinder


29


to the piles


35




a


and


35




b


of the paper discharge portion


30


via the paper discharge chain


33


. However, the structure may be made, for example, such that a transfer cylinder is applied to another transfer cylinder, and the sheet-like material is transferred to the paper discharge cylinder via one or a plurality of transfer cylinders or the sheet-like material is transferred to the paper discharge cylinder or the sheet-like material is transferred to a new printing portion via one or a plurality of transfer cylinders.




Further, in the above embodiment, the second printing portion is constituted by the number cylinder


25


, the ink supply apparatus


26


and the like. However, the second printing portion can be constituted by a general plate cylinder for printing a general pattern, an ink supply apparatus and the like.




Further, in the above embodiment, the double diameter impression cylinder


22


is employed. However, it is possible to employ an impression cylinder having three times or more of cylinder diameter. Here, in the case that the impression cylinder is the double diameter cylinder, an angle formed by a line obtained by linearly connecting the oppositely contacting position between the first printing portion and the impression cylinder to an axial center of the impression cylinder, and a line obtained by linearly connecting the oppositely contacting position between the number printing portion and the impression cylinder


22


to the axial center of the impression cylinder is equal to or less than 180 degrees.




In accordance with the printing machine of the present invention, it is possible to restrict the loss of the sheet-like material as much as possible.



Claims
  • 1. A printing machine comprising:a rotatable impression cylinder which has a plurality of effective surfaces for holding a sheet-like material along a peripheral direction at a predetermined interval; a first printing portion which is oppositely brought into contact with said impression cylinder and applies a printing to said sheet-like material; a second printing portion which is oppositely brought into contact with said impression cylinder in a downstream side in a rotational direction of said impression cylinder with respect to an oppositely contacting position of said first printing portion with said impression cylinder and applies a printing to said sheet-like material; a number printing portion which is oppositely brought into contact with said impression cylinder in a downstream side in the rotational direction of said impression cylinder with respect to an oppositely contacting position of said second printing portion with said impression cylinder and applies a number printing to said sheet-like material; and a transfer cylinder which is oppositely brought into contact with said impression cylinder in a downstream side in a rotational direction of said impression cylinder with respect to an oppositely contacting position of said number printing portion with said impression cylinder and receives said sheet-like material from said impression cylinder, wherein said first printing portion, said second printing portion, said number printing portion and said transfer cylinder are respectively arranged so that a transfer distance of said sheet-like material which is defined by said impression cylinder between the oppositely contacting position between said first printing portion and said impression cylinder and the oppositely contacting position between said second printing portion and said impression cylinder has a length equal to or more than a length in a transfer direction of a printing surface of said sheet-like material, and a transfer distance of said sheet-like material which is performed by said impression cylinder between the oppositely contacting position between said number printing portion and said impression cylinder and an oppositely contacting position between said transfer cylinder and said impression cylinder has a length equal to or more than the length in a transfer direction of an printing surface of said sheet-like material and a transfer distance of a sheet-like material which is performed by said impression cylinder between the oppositely contacting position between said first printing portion and said impression cylinder and the oppositely contacting position between said number printing portion and said impression cylinder has a length equal to or less than a length obtained by adding twice a length between adjacent effective surfaces of said impression cylinder to a length of said effective surface.
  • 2. A printing machine as claimed in claim 1, wherein said impression cylinder is a plural diameter cylinder which has a plurality of effective surfaces for holding said sheet-like material along a peripheral direction at a predetermined interval, andeach of the cylinders in said first printing portion, said second printing portion and said number printing portion which are oppositely brought into contact with said impression cylinder is a single surface cylinder which has a single effective surface.
  • 3. A printing machine as claimed in claim 2, wherein said second printing portion applies a number printing to said sheet-like material.
  • 4. A printing machine as claimed in claim 1, wherein an angle formed by a line obtained by linearly connecting the oppositely contacting position between said first printing portion and said impression cylinder to an axial center of said impression cylinder, and a line obtained by linearly connecting the oppositely contacting position between said number printing portion and said impression cylinder to the axial center of said impression cylinder is equal to or less than 180 degrees.
Priority Claims (1)
Number Date Country Kind
11-110324 Apr 1999 JP
US Referenced Citations (2)
Number Name Date Kind
5927198 Tada Jul 1999
6050188 Bolza-Schunemann Apr 2000
Foreign Referenced Citations (8)
Number Date Country
43474C Jun 1888 DE
841292C Apr 1952 DE
2114416A Sep 1972 DE
4218422A Dec 1993 DE
4303797A Aug 1994 DE
0286317A Oct 1888 EP
564212A Dec 1923 FR
WO9702143A Jan 1997 WO