Structure for mounting development cartridge in image forming apparatus

Patent metadata

Field	Value
Publication number	US-2023375974-A1
Application number	US-202118031223-A
Country	US
Kind code	A1
Filing date	Apr 12, 2021
Priority date	Oct 14, 2020
Publication date	Nov 23, 2023
Grant date	—

Abstract

An example image forming apparatus includes a main body including an opening and an accommodation portion, a development cartridge detachable from the main body, a tray on which to mount the development cartridge, the tray being movable between a mounting position inserted into the main body through the opening, a withdrawal position extracted from the main body, and an accommodation position at which the development cartridge is accommodated in the accommodation portion, and an elastic support member to elastically support the development cartridge with respect to the tray while the tray moves between the mounting position, the withdrawal position, and the accommodation position.

First claim

What is claimed is:

1 . An image forming apparatus comprising:
a main body comprising an opening, a door to open and close the opening, and an accommodation portion; a tray on which to mount a development cartridge, the tray being movable between a mounting position and a withdrawal position through the opening; an elevating guide member to be elevated to a first position, at which the tray is supported to slide between the mounting position and the withdrawal position, and a second position, at which the development cartridge is accommodated in the accommodation portion, in conjunction with an opening and closing operation of the door; and an elastic support member to elastically support the development cartridge with respect to the tray.

2 . The image forming apparatus of claim 1 ,
wherein the development cartridge comprises a support protrusion protruding from a side wall, and wherein the elastic support member is further to elastically support the support protrusion with respect to the tray.

3 . The image forming apparatus of claim 2 , wherein the elastic support member comprises an elastic wire comprising a V-shaped support portion on which the support protrusion is accommodated and a coupling portion extending from both ends of the support portion and coupled to the tray.

4 . The image forming apparatus of claim 2 , wherein the elastic support member comprises a torsion coil spring comprising a winding portion inserted into a protrusion of the tray, a first arm extending from the winding portion and engaged with a first stopper provided on the tray, and a second arm extending from the winding portion to elastically support the support protrusion.

5 . The image forming apparatus of claim 2 , wherein the elastic support member comprises a plate spring comprising a first portion supported by the tray and a second portion bent from the first portion to elastically support the support protrusion.

6 . The image forming apparatus of claim 2 ,
wherein a first guide groove facing the support protrusion and extending in an elevating direction of the tray is provided in the tray, and wherein the elastic support member comprises a support member installed in the guide groove to be elevated with respect to the support protrusion, and an elastic member to apply an elastic force to the support member in a direction in contact with the support protrusion.

7 . The image forming apparatus of claim 2 ,
wherein a second guide groove facing the support protrusion and extending in a detachment direction of the tray is provided in the tray, and wherein the elastic support member comprises:
a support member comprising a first portion extending in the detachment direction and a second portion extending obliquely in the elevating direction of the tray from the first portion, and supported in the second guide groove to move in the detachment direction; and
an elastic member to apply an elastic force in the detachment direction to the support member such that the second portion contacts the support member.

8 . An image forming apparatus comprising:
a main body comprising an opening, a door to open and close the opening, and an accommodation portion; a development cartridge comprising a driving end and a non-driving end; a tray on which to mount a development cartridge, the tray being movable between a mounting position and a withdrawal position through the opening; an elevating guide member to be elevated to a first position at which the tray is supported to slide between the mounting position and the withdrawal position, and a second position at which the development cartridge is accommodated in the accommodation portion, in conjunction with an opening and closing operation of the door; and a non-elastic support member to non-elastically support the driving end of the development cartridge with respect to the tray.

9 . The image forming apparatus of claim 8 , further comprising an elastic support member to elastically support the non-driving end of the development cartridge with respect to the tray.

10 . The image forming apparatus of claim 8 , wherein the non-elastic support member comprises:
a first contact member provided on the tray; and a second contact member provided on the non-driving end of the development cartridge in contact with the first contact member to be elevated as the elevating guide member is elevated.

11 . An image forming apparatus comprising:
a main body comprising an opening and an accommodation portion; a development cartridge detachable from the main body; a tray on which to mount the development cartridge, the tray being movable between a mounting position inserted into the main body through the opening, a withdrawal position extracted from the main body, and an accommodation position at which the development cartridge is accommodated in the accommodation portion; and an elastic support member to elastically support the development cartridge with respect to the tray while the tray moves between the mounting position, the withdrawal position, and the accommodation position.

12 . The image forming apparatus of claim 11 , further comprising:
a door to open and close the opening, wherein the tray is to moves between the mounting position and the accommodation position in conjunction with an opening and closing operation of the door.

13 . The image forming apparatus of claim 11 ,
wherein the development cartridge comprises a driving end and a non-driving end, and wherein the elastic support member is to elastically support the non-driving end with respect to the tray.

14 . The image forming apparatus of claim 13 , further comprising a non-elastic support member to non-elastically support the driving end of the development cartridge with respect to the tray while the tray moves between the mounting position, the withdrawal position, and the accommodation position.

15 . The image forming apparatus of claim 14 , wherein the non-elastic support member comprises:
a first contact member provided on the tray; and a second contact member provided on the non-driving end of the development cartridge in contact with the first contact member to be elevated as the tray is elevated to the mounting position and the accommodation position.

Assignees

• Hewlett Packard Development Co

Inventors

• Kim Younghoon
• Kim Wontaek
• Hwang Holyun
• Ryu Hwanghee
• Han Saehoon
• Park Seongho
• Lee Seunggweon
• Choi Woongyong
• Kim Sungjin
• Kim Junhui

Classifications

• G03G21/1842 Primary

  for guiding and mounting the process cartridge, positioning, alignment, locks (G03G21/1864 and G03G21/1871 take precedence) · CPC title

• G03G21/1647 Primary

  Mechanical connection means · CPC title

• G03G21/1676

  for the developer unit · CPC title

• G03G21/1633 Primary

  using doors or covers (G03G21/1638 takes precedence) · CPC title

• G03G2221/183

  Process cartridge · CPC title