Printing – Intaglio – Rotary
Reexamination Certificate
1999-08-18
2001-08-14
Hilten, John S. (Department: 2854)
Printing
Intaglio
Rotary
C101S152000, C101S151000, C101S150000, C101S175000, C101S177000, C101S183000
Reexamination Certificate
active
06272987
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an intaglio printing press, and especially, one useful when applied to printing of banknotes or securities.
2. Description of the Related Art
FIG. 2
shows an example of a conventional intaglio printing press applied to printing of banknotes or securities (see, for example, Japanese Unexamined Patent Publication No. 3-38347). As shown in
FIG. 2
, a so-called triple-size impression cylinder
112
is contacted with a transfer cylinder
111
disposed on a feed side of a sheet feeder
110
, the triple-size impression cylinder
112
having three grippers disposed with equal spacing along a circumferential direction of the impression cylinder
112
so that three rubber blankets can be mounted. To the impression cylinder
112
, a so-called triple-size plate cylinder
113
is opposed in contact therewith which can have three intaglio plates mounted along a circumferential direction of the plate cylinder
113
. To the plate cylinder
113
, a so-called triple-size ink collecting cylinder
114
is opposed in contact therewith which can have three rubber blankets mounted along a circumferential direction of the ink collecting cylinder
114
. To the ink collecting cylinder
114
, four chablon rollers (so-called single cylinders)
115
are opposed in contact therewith along a circumferential direction thereof. Each of the chablon rollers
115
has a circumferential surface length corresponding to the length of the blanket of the impression cylinder
112
, or the length of the intaglio plate of the plate cylinder
113
. To these chablon rollers
115
, inking devices
116
for supplying ink are opposed in contact therewith. In these inking devices
116
, inks of different colors are filled. Opposite and in contact with the plate cylinder
113
and downstream from the ink collecting cylinder
114
, a wiping roller
117
is disposed for removing surplus ink adhering to the surface of the intaglio plate. The wiping roller
117
is immersed in a solvent stored in a wiping tank
118
. To the impression cylinder
112
, a delivery cylinder
119
of a delivery device
120
is opposed in contact therewith.
The foregoing conventional intaglio printing press is operated in the following manner:
When ink is supplied from each inking device
116
to each chablon roller
115
, the ink is fed from the chablon roller
115
to the intaglio plates of the plate cylinder
113
via the blankets of the ink collecting cylinder
114
. Surplus ink that has adhered to the surface of the intaglio plate is removed by the wiping roller
117
. When a sheet is received from the transfer cylinder
111
of the sheet feeder
110
to the impression cylinder
112
, the ink on the intaglio plate of the plate cylinder
113
is transferred to the sheet to perform printing. The printed sheet is passed on to the delivery cylinder
119
, and discharged by the delivery device
120
.
An intaglio printing press for printing of banknotes or securities is strongly required to have a further multicolor printing function (for printing in five or more colors), from the point of view of forgery prevention or the like. With the above-described conventional intaglio printing press, however, only up to four of the chablon rollers
115
and four of the inking devices
116
can be disposed around the ink collecting cylinder
114
because of the structure of the printing press. Thus, printing in five or more colors has been impossible.
SUMMARY OF THE INVENTION
The present invention has been accomplished in view of the above-described problems. It is an object of the invention to provide an intaglio printing press capable of printing in five or more colors.
To attain the above object, the present invention claims an intaglio printing press, comprising:
a plate cylinder capable of having three intaglio plates mounted along a circumferential direction of the plate cylinder;
an ink collecting cylinder contacted with said plate cylinder and capable of having four blankets mounted along a circumferential direction of the ink collecting cylinder;
a wiping roller contacted with said plate cylinder; and
an impression cylinder having the same diameter as the diameter of said plate cylinder, and contacted with said plate cylinder.
According to the intaglio printing press of the present invention, as noted above, the ink collecting cylinder is a so-called quadruple-size cylinder which can have four blankets mounted thereon. Thus, five or more ink supply means can be disposed around said ink collecting cylinder, so that printing in five or more colors can be performed.
In the intaglio printing press, a plurality of ink supply means for supplying inks to said blankets on said ink collecting cylinder may be disposed along the circumferential direction of said ink collecting cylinder. In the intaglio printing press, moreover, five or more of said ink supply means may be disposed.
REFERENCES:
patent: 4056056 (1977-11-01), Giori
patent: 4441423 (1984-04-01), Germann
patent: 4445432 (1984-05-01), Ford, Jr. et al.
patent: 4516496 (1985-05-01), Giori
patent: 4552066 (1985-11-01), Giori
patent: 4604951 (1986-08-01), Ichikawa et al.
patent: 4794856 (1989-01-01), Giori
patent: 5062359 (1991-11-01), Giori
patent: 5146850 (1992-09-01), Funada et al.
patent: 5224420 (1993-07-01), Schneider
patent: 5282417 (1994-02-01), Germann
patent: 5899145 (1999-05-01), Schaede
patent: 877000 (1953-05-01), None
patent: 0406157A1 (1991-01-01), None
patent: 0563007A1 (1993-09-01), None
patent: 3038347A (1991-02-01), None
Chau Minh H.
Hilten John S.
Komori Corporation
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