Printing – Inkers – Roller
Reexamination Certificate
1999-04-08
2001-05-22
Yan, Ren (Department: 2854)
Printing
Inkers
Roller
C101S351700, C101S352110, C101S329000
Reexamination Certificate
active
06234078
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to the art of printing and ink roller assemblies.
2. Brief Description of the Prior Art
The following are made of record: U.S. Pat. No. 3,738,269 to W. T. Wagner; U.S. Pat. No. 3,783,083 to W. A. Jenkins; U.S. Pat. No. 3,812,782 to T. Funahashi; U.S. Pat. Nos. 3,957,562; 4,280,863 and 4,334,470 to P. H. Hamisch, Jr. et al; U.S. Pat. No. 4,246,842 to L. E. Willams et al; U.S. Pat. No. 4,399,751 to J. R. Kessler; U.S. Pat. No. 4,416,201 to J. R. Kessler; U.S. Pat. Nos. 4,452,141 and 4,478,145 to J. D. Mistyurik; U.S. Pat. Nos. 5,421,869, 5,516,362 and 5,774,160 to A. Gundjian et al; and U.S. Pat. No. 5,910,227 to J. D. Mistyurik et al.
SUMMARY OF THE INVENTION
It is a feature of the invention to provide an improved ink roller assembly capable of providing a uniform application of ink over an extended period of use.
It is a feature of the invention to provide an improved ink roller assembly which supplies ink in quantities according to the inking requirements for different printing members.
It is a feature of the invention to provide an improved ink roller assembly which holds ink in quantities according to the inking requirements for different printing members.
It is a feature of the invention to provide an improved ink roller assembly which meters ink to printing characters in accordance with or as a function of the surface areas of the printing characters.
It is a feature of the invention to provide an improved ink roller assembly which has capillary sections of different lengths.
In accordance with a specific embodiment of the invention, there is provided an ink roller assembly with a first section comprised of molded plastics material, wherein the first section has a first axial shaft and a series of first discs on the first shaft, and wherein the first discs are closely spaced to provide first capillary chambers. A first porous sleeve is in contact with and spans the outer peripheries of the first discs. There is a second section also comprised of molded plastics material. The second section also has a second axial shaft and a series of second discs on the second shaft. The second discs are closely spaced to provide capillary chambers. There is a second porous sleeve in contact with and which spans the outer peripheries of the second discs. The first and second sections are axially aligned and are connected to each other.
In accordance with another embodiment of the invention, there is a first section with capillary chambers and a porous sleeve and a second section connected to the first section which has a porous sleeve but no capillary chambers.
In another embodiment of the invention, the invention provides an ink roller assembly which can be rotatably mounted on an inker shaft of an inking device. The ink roller has first and second sections connected to each other by a connector. Each of the first and second sections has a flange, a hollow shaft and a series of closely spaced discs which provide capillary chambers for retaining ink. The first section further includes a flexible resilient spring finger for releasably holding the ink roller on the inker shaft. There are preferably passages through the discs which allow for some flow of ink between capillary chambers and pressure equalization. The hollow shafts of the first and second sections have aligned openings for a receiving the inker shaft. The inker shaft has an annular groove for receiving the spring finger. There is a separate flexible resilient porous sleeve of ink retaining material in contact with and spanning the outer peripheries of the discs of both the first and second hub sections.
In yet another embodiment of the invention, a capillary section includes a series of closely spaced discs which provide capillary chambers for retaining ink. Passages interconnect the chambers to provide for some flow of ink between chambers and pressure equalization. A flange is disposed between the discs and a stub end. A porous sleeve of ink-retaining material is in contact with the outer peripheries of the discs.
In all the embodiments, varying the peripheral configurations of the discs can enhance the distribution of ink to the outer surface of the sleeve of ink retaining material.
It is preferred to have different inks in each section of the ink roller. One ink in one section can be a visible ink which can be readily seen following printing without activation or excitation, while the other ink in the other section can be a visible ink activatable or excitable following printing for coding purposes. Alternatively one ink in one section can be of one color and the other ink in the other section can be of a different color. In the event an ink is used which is visible but becomes invisible following printing, such an ink is considered to be an invisible ink in the context of this disclosure.
According to a specific embodiment, there is provided an improved method of printing on a record member, which comprises providing a print head with first and second printing members, providing an ink roller with a first porous ink-receptive sleeve containing a visible first ink and a second porous ink-receptive sleeve containing a visually alterable second ink, rolling the ink roller across the first and second printing members to cause the first sleeve to ink the first printing member with the first ink and to cause the second sleeve to ink the second printing member with the second ink, and simultaneously printing with the inked first and second printing members to produce printing with both the first and second inks on a record member.
REFERENCES:
patent: 2645997 (1953-07-01), Grede
patent: 2714851 (1955-08-01), Schnackel
patent: 3134327 (1964-05-01), Sebanc
patent: 3167009 (1965-01-01), Sloane
patent: 3738269 (1973-06-01), Wagner
patent: 3783083 (1974-01-01), Jenkins
patent: 3812782 (1974-05-01), Funahashi
patent: 3957562 (1976-05-01), Hamisch, Jr.
patent: 4227457 (1980-10-01), Hamisch, Jr.
patent: 4246842 (1981-01-01), Williams et al.
patent: 4280863 (1981-07-01), Hamisch, Jr. et al.
patent: 4334470 (1982-06-01), Hamisch, Jr.
patent: 4399751 (1983-08-01), Kessler
patent: 4416201 (1983-11-01), Kessler
patent: 4452141 (1984-06-01), Mistyurik
patent: 4478145 (1984-10-01), Mistyurik
patent: 5421869 (1995-06-01), Gundjian et al.
patent: 5516362 (1996-05-01), Gundjian et al.
patent: 5774160 (1998-06-01), Gundjian
patent: 5910227 (1999-06-01), Mistyurik
patent: 825121 (1998-02-01), None
Grass Joseph J.
Grohusky Leslie J.
Monarch Marking Systems, Inc.
Yan Ren
LandOfFree
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