Scraping device and image forming apparatus including an applying part to apply an impact to a scraping part

Patent metadata

Field	Value
Publication number	US-12306559-B2
Application number	US-202318163028-A
Country	US
Kind code	B2
Filing date	Feb 1, 2023
Priority date	Sep 26, 2022
Publication date	May 20, 2025
Grant date	May 20, 2025

Abstract

A scraping device includes: a scraping part that comes into contact with a rotating contact part to scrape off attached matter attached to the contact part; a rotation part that rotates; and an applying part that is attached to the rotation part, rotates with the rotation part, and strikes the scraping part to apply an impact to the scraping part.

First claim

What is claimed is:

1. A scraping device comprising:
a scraping part configured to contact a rotating contact part to scrape off attached matter attached to the contact part;
a rotation part configured to rotate; and
an applying part that is attached to the rotation part, is configured to rotate with the rotation part, and is configured to strike the scraping part to apply an impact to the scraping part,
wherein the applying part is configured to rotate about a same axis as the rotation part, and a position where the applying part is attached to the rotation part is not changed in accordance with a rotation of the rotation part,
wherein the rotation part is a transport part configured to transport the attached matter scraped off by the scraping part,
wherein the transport part includes a shaft and a spiral blade formed on an outer circumference of the shaft,
wherein the blade is configured to transport the attached matter as the shaft rotates, and
wherein the applying part is attached to the shaft.

2. The scraping device according to claim 1 , wherein the applying part is attached to the shaft at a position away from the blade in an axial direction.

3. The scraping device according to claim 1 , wherein the applying part is attached to a portion of the rotation part in an axial direction.

4. The scraping device according to claim 3 , wherein the applying part includes a plurality of applying parts attached to the rotation part at different positions in the axial direction thereof.

5. The scraping device according to claim 1 , wherein the applying part includes a plurality of applying parts attached to the rotation part at different positions in a rotation direction thereof.

6. The scraping device according to claim 5 , wherein the applying part includes a plurality of applying parts attached to the rotation part at different positions both in the rotation direction and the axial direction thereof.

7. The scraping device according to claim 1 , wherein the applying part is attached to the rotation part so as to protrude radially outward, and a protruding portion thereof comprise a bendable elastic body.

8. The scraping device according to claim 7 , further comprising a releasing part that is provided in a rotation path of the applying part and that is configured to release the rotating applying part to make the applying part strike the scraping part.

9. The scraping device according to claim 1 , wherein:
the scraping part is in contact with the contact part at a tip thereof and is held by a holding part at a base end thereof; and
the applying part is configured to strike a non-supported portion of the scraping part, the non-supported portion being closer to the tip than the portion held by the holding part is.

10. The scraping device according to claim 9 , wherein the applying part is configured to strike a portion of the non-supported portion near the tip.

11. The scraping device according to claim 1 , wherein the rotation part is configured to rotate while the contact part rotates.

12. The scraping device according to claim 11 , wherein the rotation part is configured to stop when the contact part stops.

13. The scraping device according to claim 12 , wherein the rotation part and the contact part are configured to be rotated by a same driving source.

14. An image forming apparatus comprising:
a holding member, serving as a contact part, configured to hold an image to be transferred to a recording medium, the image being formed of toner, serving as attached matter; and
the scraping device according to claim 1 in which the scraping part scrapes off the toner.

15. An image forming apparatus comprising:
a holding member, serving as a contact part, configured to hold an image to be transferred to a recording medium, the image being formed of toner, serving as attached matter; and
a scraping device comprising:
a scraping part configured to contact a rotating contact part to scrape off attached matter attached to the contact part;
a rotation part configured to rotate; and
an applying part that is attached to the rotation part, is configured to rotate with the rotation part, and is configured to strike the scraping part to apply an impact to the scraping part,

wherein the rotation part is a transport part configured to transport the attached matter scraped off by the scraping part,
wherein the transport part includes a shaft and a spiral blade formed on an outer circumference of the shaft; shaft,
wherein the blade is configured to transport the attached matter as the shaft rotates,
wherein the applying part is attached to the shaft, and
wherein the scraping part is configured to scrape off the toner.

16. An image forming apparatus comprising:
a holding member, serving as a contact part, configured to hold an image to be transferred to a recording medium, the image being formed of toner, serving as attached matter; and
a scraping device comprising:
a scraping part configured to contact a rotating contact part to scrape off attached matter attached to the contact part;
a rotation part configured to rotate; and
an applying part that is attached to the rotation part, is configured to rotate with the rotation part, and is configured to strike the scraping part to apply an impact to the scraping part,
wherein the rotation part is a transport part configured to transport the attached matter scraped off by the scraping part,
wherein the transport part includes a shaft and a spiral blade formed on an outer circumference of the shaft,
wherein the blade is configured to transport the attached matter as the shaft rotates,
wherein the applying part is attached to the shaft,
wherein the applying part is attached to the shaft at a position away from the blade in an axial direction, and
wherein the scraping part is configured to scrape off the toner.

17. The image forming apparatus according to claim 14 , wherein the scraping device is configured such that the applying part strikes the scraping part in an area through which paper, serving as the recording medium, passes.

Assignees

• Fujifilm Business Innovation Corp

Inventors

• Ogino Takuya
• Shimodaira Akira
• Ichiki Yukihiro

Classifications

• G03G2221/0089

  Mechanical · CPC title

• G03G2221/0021

  applying vibrations to the electrographic recording medium for assisting the cleaning, e.g. ultrasonic vibration · CPC title

• G03G2221/1627

  Details concerning the cleaning process · CPC title

• G03G2215/1661

  of transfer belt · CPC title

• G03G2221/1618

  for the cleaning unit · CPC title