Electrophotography – Having particular structure – Modular or displaceable
Reexamination Certificate
1999-12-29
2001-02-06
Braun, Fred L. (Department: 2852)
Electrophotography
Having particular structure
Modular or displaceable
C399S165000
Reexamination Certificate
active
06185395
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a photoreceptor web installing/removing apparatus for a printer, having an improved structure so that a photoreceptor web can be easily installed on a roller unit and removed therefrom.
2. Description of the Related Art
In general, as shown in
FIG. 1
, a printer or copier includes a roller unit
10
installed in a main body
1
of the printer and a photoreceptor web
20
installed so as to circulate around the roller unit
10
. The roller unit
10
includes a frame
13
by which a plurality of support rollers
11
, for supporting the photoreceptor web
20
, are supported. A mobile bracket
14
is movably installed on the frame
13
by which a bracket tension roller
12
for adjusting the tension of the photoreceptor web
20
is supported. The photoreceptor web
20
circulates on a continuous path while being supported by the rollers
11
and
12
. An image formed on a surface of the photoreceptor web
20
is developed by a predetermined development device (not shown).
The photoreceptor web
20
is flexible. Therefore, to easily install the photoreceptor web
20
on the roller unit
10
or remove it therefrom, a belt installation cartridge
30
and a belt removing cartridge
40
(see
FIG. 2
) are used. The belt installation cartridge
30
, accommodating the photoreceptor web
20
inside, is inserted in the main body
1
of the printer so as to encompass the roller unit
10
and install the photoreceptor web
20
on the roller unit
10
. After the photoreceptor web
20
is installed, the belt installation cartridge
30
is pulled back. Also, to replace the photoreceptor web
20
, the belt removing cartridge
40
is inserted in the main body
1
of the printer so as to encompass the roller unit
10
. Next, the photoreceptor web
20
is clamped by a predetermined clamping device (not shown) provided on the belt removing cartridge
40
. Then, as the belt removing cartridge
40
is removed from the main body
1
of the printer, the photoreceptor web
20
is removed from the roller unit
10
.
However, the belt cartridges
30
and
40
may not be completely inserted in the main body
1
, and even when they are completely inserted, they may not be firmly secured, or may be inserted at an incline. In any of these cases, the photoreceptor web
20
may be incorrectly installed on the roller unit
10
, or the photoreceptor web
20
may not be smoothly removed. Further, it is inconvenient for a user to carefully check whether the belt cartridge is completed and firmly inserted.
SUMMARY OF THE INVENTION
To solve the above problems, it is an object of the present invention to provide an apparatus, for installing/removing a photoreceptor web of a printer, having an improved structure so that the belt cartridge is fixedly installed in the main body of the printer, wherein a belt cartridge for installing or removing the photoreceptor web is completely inserted in a main body of the printer.
Accordingly, to achieve the above and other objects, there is provided a photoreceptor web installation/removing apparatus, for a printer, which comprises a roller unit installed in a main body of the printer and having a frame for supporting both ends of a support roller that supports a photoreceptor web. Additionally, a pair of mobile brackets, movably installed on the frame, supports both ends of a tension roller. A belt installation cartridge accommodates a new photoreceptor web to be installed on the roller unit and can be inserted in the main body of the printer to encompass the roller unit. Further, a belt removing cartridge, for removing the photoreceptor web installed on the roller unit, is capable of being inserted in the main body of the printer. Further, the apparatus includes a locking/releasing means for selectively locking to and releasing from the roller unit, the belt installation cartridge or the belt removing cartridge when inserted in the main body of the printer. Moreover, the apparatus includes a recognition means for recognizing the type of the belt cartridge inserted in the main body of the printer.
REFERENCES:
patent: 3888577 (1975-06-01), Meyer
patent: 4766455 (1988-08-01), Carter
patent: 5400121 (1995-03-01), Foote
patent: 5417322 (1995-05-01), Jeran et al.
patent: 5669043 (1997-09-01), Nishino et al.
patent: 5708924 (1998-01-01), Shogren et al.
patent: 5978625 (1999-11-01), Park
patent: 6014535 (2000-01-01), Zenk et al.
Braun Fred L.
Samsung Electronics Co,. Ltd.
Sughrue Mion Zinn Macpeak & Seas, PLLC
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