Printing – Rolling contact machines – Rotary
Reexamination Certificate
2001-10-12
2003-07-22
Hirshfeld, Andrew H. (Department: 2854)
Printing
Rolling contact machines
Rotary
C101S174000, C101S132000
Reexamination Certificate
active
06595130
ABSTRACT:
The entire disclosure of Japanese Patent Application No.2000-312975 filed on Oct. 13, 2000 including specification, claims, drawings, and summary is incorporated herein by reference in its entirety.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a printing press, particularly effective when applied in printing of seals and numbers on stock securities or bank notes.
2. Related Art
An example of outline structure of a conventional printing press for printing seals and numbers on stock securities or bank notes is shown in FIG.
9
.
As shown in
FIG. 9
, a paper feeder
110
has a pile board
111
for stacking up sheets
100
on which patterns have been already printed. The paper feeder
110
also includes a feeder board
112
for feeding the sheets
100
on the pile board
111
to a printing unit
120
one by one. At the leading end of the feeder board
112
, a swing device
113
is disposed for transferring the sheets
100
to a transfer cylinder
121
a.
The transfer cylinder
121
a
is opposing an impression cylinder
122
a
of the printing unit
120
through transfer cylinders
121
b,
121
c.
A seal cylinder
123
for printing seals is opposing the impression cylinder
122
a.
A roller group of an ink feeder
124
is opposing the seal cylinder
123
. Number printing cylinders
125
a,
127
a
for printing numbers are opposing the impression cylinder
122
a.
A roller group of an ink feeder
126
a
is opposing these number printing cylinders
125
a,
127
a.
A transfer cylinder
121
d
is opposing the impression cylinder
122
a.
An impression cylinder
122
b
is opposing the transfer cylinder
121
d.
Number printing cylinders
125
b,
127
b
for printing numbers are opposing the impression cylinder
122
b.
A roller group of an ink feeder
126
b
is opposing these number printing cylinders
125
b,
127
b.
A delivery cylinder
129
is opposing the impression cylinder
122
b.
A sprocket
131
is coaxially disposed on the delivery cylinder
129
. A sprocket
132
is provided in a delivery unit
130
. A delivery chain
133
is stretched between these sprockets
131
and
132
. Delivery grippers
134
are disposed at specified intervals in the delivery chain
133
. The delivery unit
130
has piles
135
a
to
135
c
for stacking up sheets
100
after printing of seals and numbers.
In such printing press, when the sheets
100
, on which patterns are already printed, are transferred onto the transfer cylinder
121
from the pile board
111
of the paper feeder
110
through the feeder board
112
, the sheets
100
are transferred to the impression cylinder
122
a
of the printing unit
120
through the transfer cylinders
121
b,
121
c,
and seals are printed by the seal cylinder
123
and numbers are printed by the number printing cylinders
125
a,
127
a,
and successively they are transferred to the impression cylinder
122
b
through the transfer cylinder
121
d,
and numbers are printed by the number printing cylinders
125
b,
127
b,
and they are gripped by the delivery gripper
134
of the delivery unit
130
through the delivery cylinder
129
, and conveyed along with running of the delivery chain
133
, and discharged onto delivery tables
135
a
to
135
c.
SUMMARY OF THE INVENTION
However, such conventional printing press had the following problems.
(1) Since numbers are printed by the numbering cylinder
125
a
while printing seals on the sheets
100
by the seal cylinder
123
, printing by the seal cylinder
123
may be slightly deviated by light vibration while number printing by the number printing cylinder
125
a,
thereby resulting in wasted paper.
(2) Since gripping of sheets
100
is changed from the impression cylinders
122
a,
122
b
to the transfer cylinder
121
d
or delivery cylinder
129
while printing numbers on the sheets
100
by the number printing cylinders
127
a,
127
b,
the terminal end of the sheets
100
may be pulled by the number printing cylinders
127
a,
127
b
by the ink while number printing, and gripping failure of sheets
100
may occur in the transfer cylinder
121
d
or delivery cylinder
129
, and the sheets
100
may be dropped, or the terminal end of the sheets
100
may be pulled to the transfer cylinder
121
d
side or delivery cylinder
129
side, and number printing failure or waste of paper may occur.
Accordingly, a printing press capable of minimizing such loss of sheets
100
has been keenly demanded.
BRIEF SUMMARY OF THE INVENTION
To solve the problems, the printing press of the present invention comprises an impression cylinder for receiving sheet-like object and holding the sheet-like object, a first printing portion for printing the sheet-like object held by the impression cylinder, a second printing portion disposed at transport direction downstream side of the first printing portion for printing the sheet-like objects held by the impression cylinder, a number printing portion disposed at transport direction downstream side of the second printing portion for number printing the sheet-like object held by the impression cylinder, and a transport cylinder disposed at transport direction downstream side of the number printing portion for receiving the sheet-like object held by the impression cylinder, in which the distance between the outer circumference portion of the impression cylinder opposing the first printing portion and the outer circumference portion of the impression opposing the second printing portion and the distance between the outer circumference portion of the impression cylinder opposing the number printing portion and the outer circumference portion of the impression cylinder opposing the transport cylinder are set more than the length in the circumferential direction of the effective printing area of the sheet-like object, the distance between the outer circumference portion of the impression cylinder opposing the first printing portion and the outer circumference portion of the impression cylinder opposing the number printing portion is set less than the total length of the length of the effective impression are of the impression cylinder and double the length between adjacent effective impression areas of the impression cylinder, and an inspecting unit is further provided for inspecting the sheet-like object supplied to the impression cylinder.
This printing press may further comprise an accumulating unit for receiving and accumulating the sheet-like object from the transport cylinder, and a control unit for controlling the number printing portion to stop number printing on the sheet-like object when the sheet-like object do not satisfy the inspection standard on the basis of a signal from the inspecting unit, and controlling the accumulating unit to accumulate in a position different from the sheet-like object satisfying the inspection standard.
This printing press may further comprise the inspecting unit which inspects one side and other side of the sheet-like object.
This printing press may further comprise the inspecting unit which includes a first inspection cylinder rotatably supported, a first inspection camera for inspecting one side of the sheet-like object held in the first inspection cylinder, a second inspection cylinder rotatably supported, and a second inspection camera for inspecting other side of the sheet-like object held in the second inspection cylinder.
This printing press may further comprise the first inspection cylinder and the second inspection cylinder, which can be suction cylinders.
This printing press may further comprise a first contacting unit for attracting the sheet-like object to the first inspection cylinder side between the feed position for feeding the sheet-like object to the first inspection cylinder and the inspection position of the sheet-like object by the first inspection camera, and
a second contacting unit for attracting the sheet-like object to the second inspection cylinder side between the feed position for feeding the sheet-like object to the second inspection cylinder and the inspection position of the sheet-l
Culler Jill E.
Hirshfeld Andrew H.
Komori Corporation
LandOfFree
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