Printing – Stenciling
Reexamination Certificate
2001-10-03
2003-10-21
Yan, Ren (Department: 2854)
Printing
Stenciling
C101S116000
Reexamination Certificate
active
06634287
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a stencil disposal box detachably provided on a main body of a stencil printing machine, in which used stencil sheets are stored.
2. Description of the Related Art
A stencil printing machine functions to print an ink image according to the steps below. Specifically, a thermal head thermosensitively perforates a stencil sheet so as to correspond to a desired image. This thermosensitively perforated stencil sheet is wound around the outer peripheral surface of a printing drum. Then, a print sheet is fed such that the stencil sheet thus wound is pressed onto the print sheet. During this press conveying process, ink is transferred to the print sheet through a perforation of the stencil sheet. In the above-described stencil printing machine, the stencil sheet used for the printing is removed from the printing drum, then the removed stencil sheet is conveyed to the stencil disposal box and stored therein, and then, stencil sheet thermosensitively perforated so as to correspond to a new desired image is wound around the outer peripheral surface of the printing drum. With such a constitution, the stencil printing machine can print new images repeatedly. If the stencil sheet disposal box is filled with the used stencil sheet, it is required to detach the stencil disposal box from the stencil printing machine main body to dispose of the stencil sheet in the stencil sheet disposal box to a wastebasket.
FIG. 1
shows a perspective view of a conventional stencil disposal box, and
FIG. 2
shows a sectional view of the same. As shown in
FIGS. 1 and 2
, a stencil disposal box
100
is constituted of a stencil disposal box main body
101
having an opening
101
a
on the upper side thereof and a sweeping member
102
provided in the stencil disposal box main body
101
. This sweeping member
102
has an approximately U-shape and the both ends thereof are rotatably supported by rotation support portions
103
to the stencil disposal box main body
101
.
As shown by the solid line in
FIGS. 1 and 2
, when the stencil box
100
is mounted to a stencil printing machine main body (not shown), the sweeping member
102
is located at a position where it contacts the bottom plane of the stencil disposal box due to its own weight. Also, as shown by the broken line of
FIG. 2
, when the opening
101
a
of the stencil disposal box
100
is turned downward, the sweeping member
102
rotates due to its own weight so as to separate from the bottom plane.
Next, description will be made for a disposal process of the used stencil sheet
105
contained in the stencil disposal box
100
to a wastebasket
104
with reference to FIG.
3
.
When the stencil disposal box
100
is filled with the stencil sheet
105
stored therein, a user detaches the stencil disposal box
100
from the stencil printing machine main body. Then, the user carries this detached stencil disposal box
100
to the position of the wastebasket
104
. At a position above the wastebasket
104
, the user turns downward the opening
101
a
of the stencil disposal box
100
as shown by the solid and broken lines of FIG.
3
. Consequently, the sweeping member
102
rotates due to its own weight so as to separate from the bottom plane of the stencil disposal box main body
101
and pushes the stencil sheet
105
to the side of opening
101
a
. Thus, the stencil sheet
105
drops into the wastebasket
104
(Refer a gazette of Utility Model Registration 2547498).
In this conventional example, even if the used stencil sheet
105
is stuck to the inner surface of the stencil disposal box main body
101
due to viscosity of the ink adhered on the used stencil sheet
105
, the sweeping member
102
can drop such stuck stencil sheet
105
easily.
However, in the conventional stencil disposal box
100
described above, the sweeping member
102
rotated due to its own weight. Therefore, in the case where the adhesion force of the ink on the stencil sheet
105
was strong, sometimes the sweeping member
102
could not rotate, and thus, the stencil sheet
105
could not be dropped. Especially, when using the apparatus, in which the stencil sheet
105
is compressed and stored in the stencil disposal box
100
, the stencil sheet
105
is apt to adhere strongly due to the ink viscosity. Here, a method that the sweeping member
102
is made heavier or larger may be conceived as a solution therefor. However, the stencil disposal box
100
proportionally becomes heavier or larger, resulting in the undesirable deterioration of the operability thereof.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a stencil disposal box capable of disposing of used stencil sheet, which sticks to the stencil disposal box main body due to ink viscosity, by dropping the same from the stencil disposal box main body surely and easily.
From the first aspect of the present invention, there is provided a stencil disposal box, which is detachably provided to a stencil printing machine main body and stores used stencil sheet when the stencil disposal box is mounted to the stencil printing machine main body. The stencil disposal box is characterized by comprising: a stencil disposal box main body having an opening formed thereon, through which the stencil sheet is conveyed, and storing the conveyed stencil sheet; a sweeping member rotatively provided so as to move between an innermost position approximately adjacent to an inner surface of the stencil disposal box main body and a sweeping position located more adjacently to the opening side than the innermost position; and an operation member for operating movement of the sweeping member.
In this stencil disposal box, when a user turns downward the opening of the stencil disposal box main body and operates the operation member, the sweeping member moves from the innermost position to the sweeping position, and the used stencil sheet stuck to the stencil disposal box main body due to the ink viscosity is forcibly separated therefrom by this moving sweeping member.
In the second aspect of the present invention, the ribs extending in approximately parallel to a conveying direction of the stencil sheet are further provided on the inner surface of the stencil disposal box main body.
In this stencil disposal box, since the stencil sheet conveyed in the stencil disposal box main body contacts the rib, the contact area between the stencil sheet and the stencil disposal box main body becomes small. Accordingly, the used stencil sheet hardly adheres to the stencil disposal box main body, and even if adhered, the adhesion force is weak.
In the third aspect of the present invention, the ribs are provided on a surface of the sweeping member, to which the stencil sheet contacts.
In this stencil disposal box, since the stencil sheet contacts the rib of the sweeping member when the sweeping member moves from the innermost position to the sweeping position, the contact area between the stencil sheet and the sweeping member is small. Therefore, the used stencil sheet hardly adheres to the sweeping member.
In the fourth aspect of the present invention, the ribs of the sweeping member are set to have a height so as not to protrude from the ribs on the stencil disposal box main body when the sweeping member is located at the innermost position.
In this stencil disposal box, the stencil sheet conveyed in the stencil disposal box main body contacts the rib on the stencil disposal box main body, but does not contact the rib on the sweeping member, and in such a state, the stencil sheet is stored in the stencil disposal box main body. When the stencil disposal box is detached from the stencil printing machine main body and the operation member is operated, the rib on the sweeping member first contacts the used stencil sheet.
In the fifth aspect of the present invention, an urging means for urging the sweeping member to move to the innermost position is further provided.
In this stencil disposal box, even if the user does not return the sweeping member t
Kanai Atusi
Mizutani Tomohiro
Berkowitz Marvin C.
Nath Gary M.
Novick Harold L.
Riso Kagaku Corporation
Yan Ren
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