IP Library Granted Patent US 7,130,561
Granted Patent B2
US 7,130,561 · App. 10/857,004 · Granted Oct 31, 2006

Image forming device

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Quick Facts
Patent No.
US 7,130,561
App. No.
10/857,004
Granted
Oct 31, 2006
Kind
B2
Abstract

An image forming device includes: an image carrier that carries an image; a development unit that develops, with toners, a latent image written on the image carrier; an intermediate transfer member to which the toner images formed on the image carrier by the development unit are primarily transferred; and a fixing unit that fixes, to paper, the toner images secondarily transferred from the intermediate transfer member. The image carrier and the intermediate transfer member are unitized to configure an image forming unit, and the image forming unit is disposed in a space sandwiched between the development unit and the fixing unit. The image forming unit further includes a loading/unloading allowing unit that allows the loading/unloading of the image forming unit.

Claims (33)

1. An image forming device comprising:

an image carrier that carries an image;

a development unit that develops, with toners, a latent image written on the image carrier;

an intermediate transfer member to which the toner images formed on the image carrier by the development unit are primarily transferred; and

a fixing unit that fixes, to paper, the toner images secondarily transferred from the intermediate transfer member,

wherein the image carrier and the intermediate transfer member are unitized to configure an image forming unit, with the image forming unit being disposed in a space sandwiched between the development unit and the fixing unit where the image forming unit transects every line drawn from any point on the surface of the development unit to any point on the fixing unit, and

the image forming unit further includes a loading/unloading allowing unit that allows the loading/unloading of the image forming unit.

2. An image forming device comprising:

an image carrier;

a rotary development unit that develops, with toners, a latent image written on the image carrier; and

an intermediate transfer member to which the toner images formed on the image carrier by the development unit are primarily transferred,

wherein the image carrier and the intermediate transfer member are unitized to configure an image forming unit, and

the image forming unit includes a loading/unloading allowing unit that allows the image forming unit to be loaded and unloaded in a substantially tangential direction of the rotary development unit at a point of contact between the rotary development unit and the image forming unit.

3. The image forming device of claim 2 , wherein the rotary development unit includes development rolls that are pressed from an inner side of the rotary development unit, and the loading/unloading allowing unit allows the loading/unloading of the image forming unit in a substantially perpendicular direction with respect to the direction in which the development rolls are pressed.

4. The image forming device of claim 2 , wherein the loading/unloading allowing unit includes a guide section that guides the image forming unit in a substantially tangential direction of the rotary development unit.

5. The image forming device of claim 4 , wherein the guide section includes a first guide portion that allows the image forming unit to move in directions in which the image forming unit contacts and separates from the rotary development unit, and a second guide portion that allows the image forming unit to move in a substantially tangential direction of the rotary development unit.

6. The image forming device of claim 2 , further comprising an open/close cover, wherein the image forming unit moves together with the open/close cover.

7. The image forming device of claim 2 , wherein the image forming unit further includes an image carrier cleaner that recovers toner from the image carrier.

8. The image forming device of any of claims 1 to 7 , wherein the image forming unit further includes an intermediate transfer member cleaner that recovers toner from the intermediate transfer member.

9. An image forming device comprising:

an image carrier;

a development unit that develops, with toners, a latent image written on the image carrier;

an intermediate transfer member to which the toner images formed on the image carrier by the development unit are primarily transferred; and

a fixing unit that fixes, to paper, the toner images secondarily transferred from the intermediate transfer member,

wherein the image carrier and the intermediate transfer member are unitized to configure an image forming unit, and

the image forming unit is loaded in and unloaded from the image forming device body through a space between the fixing unit and the development unit where the image forming unit transects every line drawn from any point on the surface of the development unit to any point on the fixing unit.

10. The image forming device of claim 9 , wherein the development unit is a rotary development unit.

11. The image forming device of claim 10 , wherein the rotary development unit includes development rolls that are pressed from an inner side of the rotary development unit, and the loading/unloading allowing unit allows the loading/unloading of the image forming unit in a substantially perpendicular direction with respect to the direction in which the development rolls are pressed.

12. The image forming device of claim 10 , wherein the loading/unloading allowing unit includes a guide section that guides the image forming unit in a substantially tangential direction of the rotary development unit.

13. The image forming device of claim 12 , wherein the guide section includes a first guide portion that allows the image forming unit to move in directions in which the image forming unit contacts and separates from the rotary development unit, and a second guide portion that allows the image forming unit to move in a substantially tangential direction of the rotary development unit.

14. The image forming device of claim 13 , further comprising an open/close cover, wherein the image forming unit moves together with the open/close cover.

15. The image forming device of claim 14 , wherein the image forming unit further includes an image carrier cleaner that recovers toner from the image carrier.

16. The image forming device of claim 15 , wherein the image forming unit further includes an intermediate transfer member cleaner that recovers toner from the intermediate transfer member.

Assignments (2)
CHANGE OF NAME Recorded Aug 12, 2021
From: FUJI XEROX CO., LTD.
To: FUJIFILM BUSINESS INNOVATION CORP.
Reel/Frame 058287/0056 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 1, 2004
From: IIKURA, KAZUAKI; OKAMOTO, MASAYA
To: FUJI XEROX CO., LTD.
Reel/Frame 015420/0147 →