Image forming apparatus including waste toner reusing device and method of reusing waste toner

• US 20060024102A1
• Filed: 05/16/2005
• Published: 02/02/2006
• Est. Priority Date: 07/30/2004
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Jung, Hyun-Sun
• Application Number:
  US11/129,506
• Publication Number:
  US 20060024102A1
• Time in Patent Office: Days
• US Class Current: 399/359
• CPC Class Codes: G03G 21/12 Toner waste containers

Abstract

An image forming apparatus is provided including a waste toner reusing device and a method of reusing waste toner. The image forming apparatus includes a photoreceptive unit, a waste toner container, and a waste toner reusing device. The waste toner container stores waste toner removed from at least one of the photoreceptive unit and an intermediate transfer medium. The waste toner reusing device reuses the waste toner stored in the waste toner container to develop a latent image formed on the photoreceptive unit. Therefore, the waste toner can be reused for operations such as print testing. Reusing waste toner prolongs the lifespan of toner, thus cutting costs.

Claims

1. An image forming apparatus having at least one photoreceptive unit and an intermediate transfer medium, the image forming apparatus comprising:

a waste toner container for storing waste toner removed from at least one of the photoreceptive unit and the intermediate transfer medium; and

a waste toner reusing device for reusing the waste toner stored in the waste toner container to develop a latent image formed on the photoreceptive unit.

2. The image forming apparatus of claim 1, further comprising a plurality of developing units to develop the electrostatic latent image formed on the photoreceptive unit into a color image,

wherein the waste toner reusing device reuses the color waste toner removed from the photoreceptive unit and the intermediate transfer medium to form an image.

3. The image forming apparatus of claim 2, wherein the waste toner reusing device comprises a waste toner developing unit providing the waste toner to the photoreceptive unit to develop the electrostatic latent image formed thereon, and a transporting unit transporting the waste toner from the waste toner container to the waste toner developing unit.

4. The image forming apparatus of claim 1 , wherein the waste toner reusing device comprises a waste toner developing unit providing the waste toner to the photoreceptive unit to develop the electrostatic latent image formed thereon, and a transporting unit transporting the waste toner from the waste toner container to the waste toner developing unit.

5. The image forming apparatus of claim 3, wherein the transporting unit comprises:

a connecting unit connecting the waste toner container to the waste toner developing unit and having a screw to transport the waste toner; and

a driving unit to rotate the screw.

6. The image forming apparatus of claim 5, wherein the connecting unit further comprises a temporary waste toner container for temporarily storing the waste toner transported from the waste toner container.

7. The image forming apparatus of claim 6, wherein the temporary waste toner container and the waste toner developing unit each comprise a sensor.

8. A method of reusing waste toner of an image forming apparatus, comprising:

transporting waste toner stored in a waste toner container to a waste toner developing unit; and

developing a latent image formed on a photoreceptive drum by using the waste toner contained in the waste toner developing unit.

9. The method of claim 8, wherein the image forming apparatus comprises a transporting unit including a connecting unit connecting the waste toner container to the waste toner developing unit and having a screw therein to transport the waste toner, and a driving unit rotating the screw.

10. The method of claim 8, wherein the image forming apparatus further comprises a temporary waste toner container temporally storing the waste toner transported from the waste toner container.

11. The method of claim 10, wherein the temporary waste toner container and the waste toner developing unit each comprises a sensor.

12. The method of claim 8, wherein the waste toner is formed by mixing a plurality of color toners and reused.