US 12,533,617 B2 · Filter holding device, developing device, process cartridge, and image forming apparatus

Abstract

A filter holding device includes an opening portion and a filter. The opening portion communicates an inside of the filter holding device with an outside of the filter holding device, and has a rim that extends in a communication direction from the inside of the filter holding device toward the outside of the filter holding device. The filter is disposed in the opening portion, and has a first side and a second side. The first side faces the inside of the filter holding device. The second side faces the outside of the filter holding device. The filter has a larger weight density per unit volume at the second side facing the outside of the filter holding device than at the first side facing the inside of the filter holding device in a state in which the filter is disposed in the opening portion.

Claims22

Dependent claims

A device comprising:

an opening to communicate an inside of the device with an outside of the device, the opening having a rim that extends in a communication direction from the inside of the device toward the outside of the device;
and
a filter disposed in the opening, the filter including:
a first side facing the inside of the device;
and
a second side facing the outside of the device,
wherein the filter is compressed in intersection directions intersecting the communication direction by contact with the rim so that a degree of compression on the first side is greater than a degree of compression on the second side, and
wherein the filter has a larger weight density per unit volume at the second side than at the first side in a state in which the filter is disposed in the opening.

5 more elements

A device comprising:

an opening to communicate an inside of the device with an outside of the device, the opening including a rim that extends in a communication direction from the inside of the device toward the outside of the device;
and
a filter disposed in the opening portion, the filter including:
a first side facing the inside of the device;
and
a second side facing the outside of the device,
wherein the filter has a smaller weight density per unit volume at the first side than at the second side in a single state in which the filter is not disposed in the opening, and
wherein in a state in which the filter is disposed in the opening such that the first side of the filter faces the inside of the device and the second side of the filter faces the outside of the device, at least a portion of the filter is compressed in intersection directions intersecting the communication direction by contact with the rim so that a degree of compression on the first side is greater than a degree of compression on the second side.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application

18/025,406Filed 22 Sep 2021

Priority

JP 2020-1696697 Oct 2020

Published

US 2023/0330582 A119 Oct 2023

Granted

27 Jan 2026

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

B01D 46/10
Filters or filtering processes specially modified for separating dispersed particles from gases or vapours: particle separators, e.g. dust…
G03G 21/206
Humidity or temperature control also ozone evacuation; Internal apparatus environment control: conducting air through the machine, e.g. for…
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 15/0898
Arrangements or disposition of the complete developer unit or parts thereof not provided for by groups G03G15/08 - G03G15/0894: for preventing…

Filter holding device, developing device, process cartridge, and image forming apparatus

Life of this patent

Filter holding device, developing device, process cartridge, and image forming apparatus

Life of this patent

Abstract

Claims22