Printing roll and elastic plate installed on printing roll

Details Printing roll and elastic plate installed on printing roll Printing roll and elastic plate installed on printing roll

1995-02-15

1996-01-09

Eickholt, Eugene H.

Printing

Flexible-sheet-securing devices

101477, B41F 128

Patent

active

054819768

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

1. Field of the Invention
The present invention relates to a printing roll and a thin-film forming elastic plate which can be easily fixed to a printing roll barrel by pressing an elastic plate holder mounted on the thin-film forming elastic plate against the printing roll barrel and which can be easily pulled over the printing roll barrel without wrinkling the thin-film forming elastic plate in fixing the thin-film forming elastic plate to the printing roll barrel.
More specifically, as an apparatus for forming a macromolecular thin-film pattern used for electronic parts such as liquid crystal orientation films, a thin-film forming apparatus shown in FIG. 29 comprising the following components is known: an intaglio roll (A) having a plurality of ink cells; an ink supply means (B) having a doctor blade B2 for filling ink into the ink cells; a printing roll (C) having a thin-film forming elastic plate (E), installed on a barrel, to which the ink of an intaglio roll (A) is transferred; a printing table (D) for fixing thereto a to-be-printed material D2, to which the ink of the printing roll (C) is transferred. The present invention relates to a printing roll preferably used in such a thin-film forming apparatus and a thin-film forming elastic plate to be installed on the printing roll.
2. Description of the Related Art
A device, for fixing the thin-film forming elastic plate to the printing roll, to be used in such a thin-film forming apparatus is proposed by the present applicant and disclosed in Japanese Patent Application No. 3-348683. In the device, the thin-film forming elastic plate is installed on and removed from the surface of the printing roll barrel comprising a hooking portion having rotary type fixing screws and a pulling portion having rotary type pulling screws, with elastic plate holders having the printing roll-chucking holes for receiving the rotary type screws installed on both ends of an elastic portion of the thin-film forming elastic plate.
That is, the thin-film forming elastic plate is installed on the printing roll barrel as follows: The fixing screws of the hooking portion of the printing roll barrel are manually inserted into the printing roll-chucking holes of one of the elastic plate holders installed on the elastic portion; the fixing screws are manually tightened to fix the elastic plate holder to the printing roll barrel; the pulling screws of the pulling portion of the printing roll are manually inserted into the printing roll-chucking holes of the other elastic plate holder; and the pulling portion is moved by turning the pulling screws manually to apply tensile force to the elastic portion. In this manner, the thin-film forming elastic plate is installed on the printing roll barrel. In removing the thin-film forming elastic plate from the printing roll barrel, the pulling portion is moved by turning the pulling screws of the pulling portion manually to relieve the tensile force applied to the elastic portion; the fixing screws are loosened manually to release the thin-film forming elastic plate from the printing roll barrel; and the elastic plate holders are manually removed from the hooking portion of the printing roll barrel and the pulling portion thereof. In this manner, the thin-film forming elastic plate is removed from the printing roll barrel.
The above-described thin-film forming apparatus has the following problems: pulling portions provided on the conventional printing roll barrel has only the fixing and pulling screws. Therefore, in order to fix the thin-film forming elastic plate to the printing roll barrel and release it therefrom, it is necessary to tighten and loosen the fixing screws manually and turn the pulling screws clockwise and counterclockwise manually. Thus, the operation of fixing the thin-film forming elastic plate to the printing roll barrel and removing it therefrom takes time and labor and is performed inefficiently. barrel by the conventional chucking device, initially, the operation of pressing the elastic plate h

REFERENCES:
patent: 1350488 (1920-08-01), Blaine
patent: 3151554 (1964-10-01), Townsend
patent: 3154012 (1964-10-01), Fischer
patent: 4259904 (1981-04-01), Metje
patent: 5052120 (1991-10-01), Lubberts
patent: 5229312 (1993-11-01), Simeth et al.
patent: 5408297 (1995-04-01), Matsuo et al.

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