US 5,353,098 AGranted

Image printing apparatus having a rotatable protective cover for a developer carrier roller therein

AssigneeSamsung Electronics Co., Ltd.

InventorYoung-tac Lim

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Abstract

An image printing apparatus has an upper main body provided with a drum, electrifying apparatus and lightexposure apparatus therein and a lower main body is provided with image-transferring apparatus and a developing apparatus having a developer carrier roller. The upper main body is pivotally detachable from the lower main body. The image printing apparatus is further provided with a protecting cover having a semi-cylindrical body section whose outer surface is formed with a plurality of semicircular protrusions. The protecting cover encloses the upper part of a developer carrier roller of the developing apparatus when the upper main body is detached from the lower main body, so that the protecting cover can prevent foreign matter from entering into the developer carrier roller. Also, the semicircular protrusions facilitate the guidance of the printing paper.

Claims12

Dependent claims

An image printing apparatus having an upper main body in which a drum, electrifying apparatus, and light-exposure apparatus are provided, and a lower main body in which an image-transferring apparatus and a developing apparatus including a developer carrier roller are provided, said upper main body being pivotally detachable from or attachable to said lower main body, said image printing apparatus comprising:

a protecting cover having a semi-cylindrical body section being hinge-combined on each side thereof with said developing apparatus so as to be rotated for enclosing and exposing an upper part of said developer carrier roller of said developing apparatus;
and
rotating means for rotating said protecting cover to enclose said upper part of said developer carrier roller to protect said developer carrier roller in response to the pivotal detachment of said upper main body from said lower main body;
said rotating means rotating said protecting cover to expose said upper part of said developer roller, said protecting cover being rotated into a position for guiding printing paper transferred through said image printing apparatus, in response to the pivotal attachment of said upper main body to said lower main body.

1 more element

An image printing apparatus comprising:

an upper main body hinged to a lower main body, said upper main body being pivotable in a counterclockwise direction to expose a developing apparatus contained in said lower main body;
said upper main body comprising a drum for transferring an image to printing paper;
said lower main body comprising a detachable developing apparatus for supplying toner and for converting said toner into developer;
said developing apparatus comprising a developer carrier roller for transferring said developer to said drum;
a protecting cover having a semi-cylindrical body section being hinge-combined on each side thereof with said developing apparatus so as to be rotated for enclosing or exposing an upper part of said developer carrier roller of said developing apparatus;
a guide lever pivotally attached at one end thereof to said upper main body, the other end of which is slidably connected to a guide groove by interposing a guide roller, said guide groove being formed on a side of said lower main body;
said guide lever having an inserting groove for attaching said guide lever to said protecting cover;
said inserting groove being located between each said end of said guide lever.

5 more elements

An image printing apparatus comprising:

an upper main body pivotally hinged to a lower main body;
said upper main body comprising a drum for transferring an image to printing paper;
said lower main body comprising a detachable developing apparatus for supplying toner and for converting said toner into developer;
said developing apparatus comprising a developer carrier roller for transferring said developer to said drum;
a protecting cover having a semi-cylindrical body section, said protecting cover being pivotally hinged on each side thereof with said developing apparatus so as to be rotated for enclosing or exposing an upper part of said developer carrier roller;
an elongated guide bar pivotally attached at one end thereof to said upper main body, the other end of which is slidably connected to a guide groove formed on a side of said lower main body;
said elongated guide bar having an inserting hole for attaching said elongated guide bar to said protecting cover;
said inserting hole being located between each said end of said elongated guide bar.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/981,128Filed 24 Nov 1992
Granted: 4 Oct 1994
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

G03G 21/1647
For connecting the different parts of the apparatus: mechanical connection means
G03G 21/1628
Means to access the interior of the apparatus: clamshell type
G03G 21/1671
Means for handling parts of the apparatus in the apparatus: for the photosensitive element
G03G 2221/163
Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts: for the developer unit

Family

No related US applications are recorded in the indexed filing history.

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