Lubricant application device with a flicking member, cleaning device having the lubricant application device, and image forming apparatus having the lubricant application device

Patent metadata

Field	Value
Publication number	US-9507312-B2
Application number	US-201414537373-A
Country	US
Kind code	B2
Filing date	Nov 10, 2014
Priority date	Nov 29, 2013
Publication date	Nov 29, 2016
Grant date	Nov 29, 2016

Abstract

A lubricant application device includes: a lubricant supply unit; a roller-type rotatable lubricant application member that applies a lubricant agent to a lubricant-applied member, the lubricant agent being supplied from the lubricant supply unit; and a flicking member to be brought into contact with the lubricant application member in a position that is on the downstream side of the lubricant supply unit and is on the upstream side of the lubricant-applied member in the rotation direction of the lubricant application member, the flicking member being brought into contact with the lubricant application member so that the amount of the lubricant agent to be applied to either end portion of the lubricant-applied member becomes smaller than the amount of the lubricant agent to be applied to the middle portion of the lubricant-applied member in the axial direction of the lubricant application member.

First claim

What is claimed is:

1. A lubricant application device comprising:
a lubricant supply unit;
a roller-type rotatable lubricant application member configured to apply a lubricant agent to a lubricant-applied member, the lubricant agent being supplied from the lubricant supply unit; and
a flicking member to be brought into contact with the lubricant application member in a position that is on a downstream side of the lubricant supply unit and is on an upstream side of the lubricant-applied member in a rotation direction of the lubricant application member, the flicking member being brought into contact with the lubricant application member so that an amount of the lubricant agent to be applied to either end portion of the lubricant-applied member becomes smaller than an amount of the lubricant agent to be applied to a middle portion of the lubricant-applied member in an axial direction of the lubricant application member.

2. The lubricant application device according to claim 1 , wherein the flicking member includes a contact portion to be brought into contact with either end portion of the lubricant application member.

3. The lubricant application device according to claim 2 , wherein either end portion of the lubricant application member is a portion to be brought into contact with a region outside an image region of the lubricant-applied member.

4. The lubricant application device according to claim 3 , wherein
the lubricant-applied member is a photoreceptor, and
either end portion of the lubricant application member is a portion to be brought into contact with a region outside the image region on a surface of the photoreceptor.

5. The lubricant application device according to claim 1 , wherein the flicking member is capable of moving toward and away from the lubricant application member.

6. The lubricant application device according to claim 1 , further comprising
a contact member capable of coming into contact with the lubricant application member in a position that is on an upstream side of the lubricant supply unit and is on a downstream side of the lubricant-applied member in the rotation direction of the lubricant application member.

7. The lubricant application device according to claim 6 , wherein the contact member is brought into contact with a middle portion of the lubricant application member in the axial direction of the lubricant application member.

8. The lubricant application device according to claim 6 , wherein the contact member is capable of moving toward and away from the lubricant application member.

9. The lubricant application device according to claim 6 , wherein the flicking member and the contact member move in conjunction with each other.

10. The lubricant application device according to claim 6 , wherein
the lubricant application member has bristles on a surface thereof, and
the rotation direction of the lubricant application member is reversed during an image non-formation period during which any image is not formed.

11. A cleaning device comprising:
a lubricant supply unit;
a roller-type rotatable lubricant application member configured to apply a lubricant agent to a lubricant-applied member, the lubricant agent being supplied from the lubricant supply unit;
a flicking member to be brought into contact with the lubricant application member in a position that is on a downstream side of the lubricant supply unit and is on an upstream side of the lubricant-applied member in a rotation direction of the lubricant application member, the flicking member being brought into contact with the lubricant application member so that an amount of the lubricant agent to be applied to either end portion of the lubricant-applied member becomes smaller than an amount of the lubricant agent to be applied to a middle portion of the lubricant-applied member in an axial direction of the lubricant application member; and
a cleaning blade configured to scrape off toner remaining on a surface of the lubricant-applied member.

12. The cleaning device according to claim 11 , wherein the flicking member includes a contact portion to be brought into contact with either end portion of the lubricant application member.

13. The cleaning device according to claim 12 , wherein either end portion of the lubricant application member is a portion to be brought into contact with a region outside an image region of the lubricant-applied member.

14. The cleaning device according to claim 13 , wherein
the lubricant-applied member is a photoreceptor, and
either end portion of the lubricant application member is a portion to be brought into contact with a region outside the image region on a surface of the photoreceptor.

15. The cleaning device according to claim 11 , wherein the flicking member is capable of moving toward and away from the lubricant application member.

16. The cleaning device according to claim 11 , further comprising a smoothing blade configured to smooth lubricant agent applied by the lubricant application member.

17. An image forming apparatus comprising
a lubricant application device including:
a lubricant supply unit;
a roller-type rotatable lubricant application member configured to apply a lubricant agent to a lubricant-applied member, the lubricant agent being supplied from the lubricant supply unit; and
a flicking member to be brought into contact with the lubricant application member in a position that is on a downstream side of the lubricant supply unit and is on an upstream side of the lubricant-applied member in a rotation direction of the lubricant application member, the flicking member being brought into contact with the lubricant application member so that an amount of the lubricant agent to be applied to either end portion of the lubricant-applied member becomes smaller than an amount of the lubricant agent to be applied to a middle portion of the lubricant-applied member in an axial direction of the lubricant application member.

18. The image forming apparatus according to claim 17 , wherein the flicking member includes a contact portion to be brought into contact with either end portion of the lubricant application member.

19. The image forming apparatus according to claim 18 , wherein either end portion of the lubricant application member is a portion to be brought into contact with a region outside an image region of the lubricant-applied member.

20. The image forming apparatus according to claim 19 , wherein
the lubricant-applied member is a photoreceptor, and
either end portion of the lubricant application member is a portion to be brought into contact with a region outside the image region on a surface of the photoreceptor.

21. The image forming apparatus according to claim 17 , wherein the flicking member is capable of moving toward and away from the lubricant application member.

22. The image forming apparatus according to claim 20 , further comprising:
a cleaning blade configured to scrape off toner remaining on a surface of the lubricant-applied member; and
a smoothing blade configured to smooth lubricant agent applied by the lubricant application member.

Assignees

• Konica Minolta Inc

Inventors

• Nishisaka Yusuke

Classifications

• G03G21/0035

  using a brush; Details of cleaning brushes, e.g. fibre density (G03G21/0064 takes precedence; magnetic brushes G03G21/0047) · CPC title

• G03G21/0011

  using a blade; Details of cleaning blades, e.g. blade shape, layer forming · CPC title

• G03G21/007

  Arrangement or disposition of parts of the cleaning unit · CPC title

• F16N7/24

  with discs, rollers, belts or the like contacting the shaft to be lubricated · CPC title

• G03G21/0094 Primary

  fatigue treatment of the photoconductor · CPC title