Printer having stacker

Details Printer having stacker Printer having stacker

1999-02-12

2001-10-30

Hilten, John S. (Department: 2854)

Typewriting machines

Sheet or web

For feeding sheet from stack or pack holder

C400S680000

Reexamination Certificate

active

06309120

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to a printer having a stacker for temporarily placing a printed paper sheet on it.
FIGS. 6A
to
6
C show the operation of a conventional printer.
As shown in
FIG. 6A
, a conventional printer P
0
has a box-like main body cover
1
storing a printing unit main body (not shown), and a thin box-like upper cover
2
attached to the upper surface side of the main body cover
1
to be rotatable about its rear end portion as the center.
The upper cover
2
has a discharge port
2
a
in its upper surface to discharge the paper sheet facedown wherein the printed surface faces downward. As shown in
FIG. 6B
, a stepped portion
5
is formed on the rear side of the upper cover
2
. A discharge port
2
c
is formed in a vertical portion
2
b
of the stepped portion
5
to discharge the paper sheet faceup wherein the printed surface faces upward. A stacker
3
is fixed at a position on a horizontal portion
2
d
of the stepped portion
5
opposing the discharge port
2
c
by a pair of fixing members
4
. The stacker
3
is formed of a flat plate member to temporarily place the paper sheet, which has been discharged faceup, on it.
In the conventional printer P
0
, when the user or the like opens the upper cover
2
by rotating it through about 90°, as indicated by an arrow A in
FIG. 6C
, to exchange the articles of consumption or to take a countermeasure for solving paper jamming, the stacker
3
is also rotated as indicated by an arrow B together with the upper cover
2
while it is fixed to the upper cover
2
, to likely collide against the devices or wall located on its rear side. To prevent this, a large space (dead space) for preventing collision must be kept behind the printer P
0
.
Such a dead space is not preferable as it increases the area required when using the printer P
0
.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a printer which does not require a collision-preventive space on its rear side when the upper cover is opened by rotating it toward the rear side.
In order to achieve the above object, according to the present invention, there is provided a printer comprising a box-like main body cover having an opening to store a printing unit main body, an upper cover attached to be able to open/close the opening of the main body cover and pivotal about a rear end side of the main body cover as an axis, a stacker attached to a rear end portion of the upper cover to temporarily place a paper sheet thereon, and stacker attaching means for supporting the stacker to be pivotal in a direction opposite to a pivoting direction of the upper cover.


REFERENCES:
patent: 5384586 (1995-01-01), Hirano et al.
patent: 5387043 (1995-02-01), Fujioka et al.
patent: 5534894 (1996-07-01), Hirano et al.
patent: 5800083 (1998-09-01), Gaarder et al.
patent: 63-231965 (1988-09-01), None
patent: 3018057 (1991-01-01), None
patent: 4-45057 (1992-02-01), None
patent: 5005758 (1993-01-01), None
patent: 5-70947 (1993-09-01), None
patent: 6-64822 (1994-03-01), None
patent: 8-81104 (1996-03-01), None

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