Cleaning device and image forming apparatus

Patent metadata

Field	Value
Publication number	US-9429895-B2
Application number	US-201514610036-A
Country	US
Kind code	B2
Filing date	Jan 30, 2015
Priority date	Feb 19, 2014
Publication date	Aug 30, 2016
Grant date	Aug 30, 2016

Abstract

A cleaning device comprises: a to-be-cleaned member; a cleaning member that cleans the surface of the to-be-cleaned member; a conveying member that conveys a substance removed from the surface of the to-be-cleaned member to outside of the device; a rotatable collecting member that conveys with its surface the substance toward the conveying member; and a partitioning member that guides the substance from the collecting member to the conveying member. The collecting member comprises a conveying portion that carries and conveys the substance; and a protrusion that protrudes toward an upstream side of the conveying portion in a rotating direction of the collecting member. One end of the partitioning member faces the rotating collecting member, and the other end faces the conveying member. The conveying portion and the protrusion are brought into contact with the partitioning member by the rotation of the collecting member.

First claim

What is claimed is:

1. A cleaning device comprising:
a member to be cleaned having a surface that moves;
a cleaning member that cleans the surface of the member to be cleaned;
a conveying member that conveys a substance removed from the surface of the member to be cleaned by the cleaning member to outside of the cleaning device;
a collecting member that is rotatably configured, has a surface for carrying the substance, and conveys the substance toward the conveying member; and
a partitioning member that guides the substance from the collecting member to the conveying member,
the collecting member including:
a conveying portion that carries and conveys the substance;
a holding portion that holds the conveying portion; and
a protrusion that protrudes toward an upstream side of the holding portion in a rotating direction of the collecting member, wherein

the partitioning member is placed in such a manner that one end of the partitioning member faces the rotating collecting member, and the other end faces the conveying member, and the conveying portion and the protrusion of the collecting member are brought into contact with the partitioning member by the rotation of the collecting member.

2. The cleaning device according to claim 1 , wherein
the partitioning member is flexible, and becomes warped when the partitioning member is brought into contact with and pressed by the collecting member by the rotation of the collecting member.

3. The cleaning device according to claim 2 , wherein
the partitioning member is fixed to a housing of the cleaning device, and a pressing force of the collecting member against the partitioning member works in a direction causing the partitioning member to be pressed against the housing.

4. The cleaning device according to claim 1 , wherein
the collecting member is rotated in a counter direction of a direction in which the surface of the member to be cleaned moves.

5. The cleaning device according to claim 1 , wherein
the collecting member is not in contact with the member to be cleaned.

6. The cleaning device according to claim 1 , wherein
the partitioning member and the conveying portion are flexible, and
the partitioning member is less rigid than the collecting member.

7. The cleaning device according to claim 1 , wherein
the conveying portion and the holding portion both extend in an axial direction of the member to be cleaned, and at least one axial end of the conveying portion is longer than the holding portion.

8. The cleaning device according to claim 1 , wherein
the conveying portion and the holding portion both extend in an axial direction of the member to be cleaned, and the conveying portion has a conveying capability for conveying the substance in the axial direction.

9. The cleaning device according to claim 8 , wherein
an axial conveying direction of the conveying portion is reversal of a conveying direction of the conveying member.

10. The cleaning device according to claim 8 , wherein
the conveying portion has a border at which a conveying direction of the substance is switched, and conveys the substance to one axial direction on one side of the border, and to the other axial direction on the other side of the border.

11. The cleaning device according to claim 8 , wherein
the axial conveying direction of the conveying portion is capable of being switched between one axial direction and another axial direction that is opposite to the one axial direction.

12. An image forming apparatus comprising the cleaning device according to claim 11 , wherein
the axial conveying direction is switched based on information such as ambient environment such as humidity and temperature, on whether any image forming operation is currently performed, on a ratio of an area of a recording medium occupied by an image formed on the recording medium, and on a cumulative image formation time.

13. An image forming unit comprising the cleaning device according to claim 11 , wherein
the axial conveying direction is switched when the image forming unit is started or when the image forming unit performs first image formation.

14. The cleaning device according to claim 1 , wherein
a wall preventing the substance to be removed from being guided from the collecting member to the conveying member is provided to one axial part of the partitioning member.

15. An image forming apparatus comprising the cleaning device according to claim 1 .

16. The cleaning device according to claim 1 , wherein the protrusion is non-planar in relation to the holding portion.

17. The cleaning device according to claim 1 , wherein the protrusion is substantially perpendicular in relation to the holding portion.

18. The cleaning device according to claim 1 , wherein the holding portion and the protrusion form an S-like shape.

19. A cleaning device comprising:
a member to be cleaned having a surface that moves;
a cleaning member that cleans the surface of the member to be cleaned;
a conveying member that conveys a substance removed from the surface of the member to be cleaned by the cleaning member to outside of the cleaning device;
a collecting member that is rotatably configured, has a surface for carrying the substance, and conveys the substance toward the conveying member; and
a partitioning member that guides the substance from the collecting member to the conveying member,
the collecting member including:
a conveying portion that carries and conveys the substance;
a holding portion that holds the conveying portion; and
a protrusion that protrudes toward an upstream side of the conveying portion in a rotating direction of the collecting member, wherein

the partitioning member is placed in such a manner that one end of the partitioning member faces the rotating collecting member, and the other end faces the conveying member, and the conveying portion and the protrusion of the collecting member are brought into contact with the partitioning member by the rotation of the collecting member, and
the conveying portion and the holding portion both extend in an axial direction of the member to be cleaned, and at least one axial end of the conveying portion is longer than the holding portion.

20. A cleaning device comprising:
a member to be cleaned having a surface that moves;
a cleaning member that cleans the surface of the member to be cleaned;
a conveying member that conveys a substance removed from the surface of the member to be cleaned by the cleaning member to outside of the cleaning device;
a collecting member that is rotatably configured, has a surface for carrying the substance, and conveys the substance toward the conveying member; and
a partitioning member that guides the substance from the collecting member to the conveying member,
the collecting member including:
a conveying portion that carries and conveys the substance; and
a holding portion that holds the conveying portion,
wherein at least one end of the conveying portion or the holding portion is end-weighted so as to push the substance toward the conveying member, and

wherein the partitioning member is placed in such a manner that one end of the partitioning member faces the rotating collecting member, and the other end faces the conveying member, and the conveying portion and the at least one end of the end-weighted conveying portion or the holding portion are brought into contact with the partitioning member by the rotation of the collecting member.

Assignees

• Teraji Hajime
• Ninomiya Hiromichi
• Kojima Takeshi
• Okamoto Michiya
• Iwasaki Takuma
• Karasawa Shinya
• Sawada Daisuke
• Nodera Kentaroh
• Moro Masanori
• Ricoh Co Ltd

Inventors

• Teraji Hajime
• Ninomiya Hiromichi
• Kojima Takeshi
• Okamoto Michiya
• Iwasaki Takuma
• Karasawa Shinya
• Sawada Daisuke
• Nodera Kentaroh
• Moro Masanori

Classifications

• B08B1/34

  rotating about an axis parallel to the surface · CPC title

• B08B1/54

  using mechanical tools · CPC title

• G03G21/0029 Primary

  Details relating to the blade support · CPC title

• G03G21/0076 Primary

  Plural or sequential cleaning devices · CPC title

• B08B1/005

  Operations & Transport · mapped topic