Scraping device and image forming apparatus

Patent metadata

Field	Value
Publication number	US-2024103405-A1
Application number	US-202318163028-A
Country	US
Kind code	A1
Filing date	Feb 1, 2023
Priority date	Sep 26, 2022
Publication date	Mar 28, 2024
Grant date	—

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 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.

2 . The scraping device according to claim 1 , wherein the rotation part is a transport part that transports the attached matter scraped off by the scraping part.

3 . The scraping device according to claim 2 , wherein:
the transport part includes a shaft and a spiral blade formed on an outer circumference of the shaft; the blade transports the attached matter as the shaft rotates; and the applying part is attached to the shaft.

4 . The scraping device according to claim 3 , wherein the applying part is attached to the shaft at a position away from the blade in an axial direction.

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

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 in the axial direction thereof.

7 . 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.

8 . The scraping device according to claim 7 , 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.

9 . 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 is a bendable elastic body.

10 . The scraping device according to claim 9 , further comprising a releasing part that is provided in a rotation path of the applying part and that releases the rotating applying part to make the applying part strike the scraping part.

11 . 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 strikes 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.

12 . The scraping device according to claim 11 , wherein the applying part strikes a portion of the non-supported portion near the tip.

13 . The scraping device according to claim 1 , wherein the rotation part rotates while the contact part rotates.

14 . The scraping device according to claim 13 , wherein the rotation part stops when the contact part stops.

15 . The scraping device according to claim 14 , wherein the rotation part and the contact part are rotated by a same driving source.

16 . An image forming apparatus comprising:
a holding member, serving as a contact part, that holds 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.

17 . An image forming apparatus comprising:
a holding member, serving as a contact part, that holds 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 2 in which the scraping part scrapes off the toner.

18 . An image forming apparatus comprising:
a holding member, serving as a contact part, that holds 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 3 in which the scraping part scrapes off the toner.

19 . An image forming apparatus comprising:
a holding member, serving as a contact part, that holds 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 4 in which the scraping part scrapes off the toner.

20 . The image forming apparatus according to claim 16 , 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