US 2014/0270850 A1Published application

Image Forming Device Having Detachable Developing Device Unit

AssigneeBrother Kogyo Kabushiki Kaisha

InventorsYoh Nishimura, Shougo Sato

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Abstract

An image forming device includes a plurality of developing devices, and a plurality of sloping members disposed in one-to-one correspondence with the plurality of developing devices. Each developing device includes a developer accommodating chamber and a developing roller disposed above the developer accommodating chamber. Each developing device is movable between a first position and a second position lower than the first position in a height direction generally parallel to a vertical direction. Each sloping member has a sloped surface movable in the height direction and a biasing member biasing the sloped surface upward in the height direction. Each sloping member is movable between a third position where the corresponding developing device is placed on the sloped surface and a fourth position where the corresponding developing device is released from being pressed by the sloped surface in a predetermined direction generally perpendicular to the vertical direction.

Claims1

Dependent claims

An image forming device comprising:

a main casing comprising:
a front door configured to move between an open position where the front door is open and closed position where the front door is closed;
a rear cover;
and
a bottom portion;
a sheet feed cassette disposed in the bottom portion of the main casing;
a photosensitive drum;
a developing device that is disposed inside the main casing and is closer to the sheet feed cassette than the photosensitive drum, the developing device being configured to move between a first position and a second position closer to the sheet feed cassette than the first position, the developing device comprising:
a developing roller;
a developing accommodating chamber configured to accommodate developer therein, the developing accommodating chamber being closer to the sheet feed cassette than the developing roller;
a supply roller configured to supply developer to the developing roller;
and
a blade configured to regulate a thickness of developer on the developing roller;
a bar configured to move between a third position and a fourth position closer to the rear cover than the third position;
and
a pressing member comprising:
a pressing portion;
and
a spring that is closer to the sheet feed cassette than the pressing portion and presses the pressing portion,
wherein the pressing portion of the pressing member is configured to press the developing device when the bar is disposed at the third position.

17 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/290,567Filed 29 May 2014
Priority: JP 2008-16497224 Jun 2008
Published: 18 Sep 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

G03G 15/0812
On a donor element, e.g. belt, roller: characterised by the developer regulating means, e.g. structure of doctor blade
G03G 15/0808
On a donor element, e.g. belt, roller: characterised by the developer supplying means, e.g. structure of developer supply roller
G03G 15/0865
Arrangements for preparing, mixing, supplying or dispensing developer: arrangements for supplying new developer
G03G 21/1623
Arrangement or disposition of the entire apparatus: means to access the interior of the apparatus

Family

Application12/406,246Continuation · filed 18 Mar 2009
Application13/347,983Continuation · filed 11 Jan 2012
Application13/906,692Continuation · filed 31 May 2013
Application14/290,567Continuation
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From the US filing history. Foreign family members aren’t listed.