Printing – Rolling contact machines – Rotary
Reexamination Certificate
2000-04-17
2001-11-06
Hilten, John S. (Department: 2854)
Printing
Rolling contact machines
Rotary
C101S174000, C101S232000
Reexamination Certificate
active
06311616
ABSTRACT:
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 plurali
Hilten John S.
Komori Corporation
Williams Kevin D.
LandOfFree
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