US 2020/0264533 A1 · DEVELOPMENT DEVICE AND IMAGE FORMING APPARATUS

Abstract

A development device includes a rotational member and a housing. The rotational member rotates around an axis. In the housing, the rotational member and a toner are stored. The housing includes a lower housing and an upper housing. The lower housing has a concave first storage part having an opened upper face. The upper housing has a concave second storage part having an opened lower face. The first storage part has a first edge portion around the opened upper face. The first edge portion has a first contact face. The second storage part has a second edge portion around the opened lower face. The second edge portion has a second contact face coming into contact with the first contact face. The first contact face and the second contact face are contained in a single plane along respective entire circumferences.

Claims9

Dependent claims

A development device comprising:

a rotational member rotating around an axis;
and
a housing in which the rotational member and a toner are stored,
wherein the housing includes:
a lower housing having a concave first storage part having an opened upper face;
and
an upper housing having a concave second storage part having an opened lower face,
wherein the first storage part has a first edge portion around the opened upper face,
the first edge portion has a first contact face,
the second storage part has a second edge portion around the opened lower face,
the second edge portion has a second contact face coming into contact with the first contact face, and
the first contact face and the second contact face are contained in a single plane along respective entire circumferences.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/775,940Filed 29 Jan 2020

Priority

JP 2019-02774919 Feb 2019

Published

20 Aug 2020

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

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 15/0896
Using a solid developer, e.g. powder developer: arrangements or disposition of the complete developer unit or parts thereof not provided for by…
G03G 15/0818
On a donor element, e.g. belt, roller: characterised by the structure of the donor member, e.g. surface properties
G03G 21/1647
For connecting the different parts of the apparatus: mechanical connection means

Development device and image forming apparatus

Life of this patent

Development device and image forming apparatus

Life of this patent

Abstract

Claims9