Wheel

Patent metadata

Field	Value
Publication number	US-11036174-B2
Application number	US-201716628787-A
Country	US
Kind code	B2
Filing date	Jul 13, 2017
Priority date	Jul 13, 2017
Publication date	Jun 15, 2021
Grant date	Jun 15, 2021

Abstract

In one example, a wheel includes an annular body having a central axis; and multiple concentric grooves in the body surrounding the central axis. A first one of the grooves penetrates the body from a first side and a second one of the grooves penetrates the body from a second side opposite the first side.

First claim

The invention claimed is:

1. A device for an electrophotographic printer, comprising:
a first roller having a photoconductive surface and a rotatable first shaft connected to the photoconductive surface such that the photoconductive surface turns with the first shaft;
a second roller to place a uniform charge on the photoconductive surface, the second roller having a rotatable second shaft oriented parallel to the first shaft; and
a friction wheel having:
a hub mounted to the second shaft such that the second shaft turns with the friction wheel;
a rim in rolling engagement with the first shaft such that the friction wheel turns with the first shaft; and
a disc connecting the rim to the hub, the disc having multiple concentric annular grooves therein penetrating the disc axially from a first side of the disc toward a second side of the disc opposite the first side.

2. The wheel of claim 1 , where the concentric annular grooves penetrate the body alternately from the first side and then the second side.

3. The wheel of claim 1 , where the grooves are to decompress radially at least 50 μm.

4. The wheel of claim 3 , where:
a root at the end of each groove is 1.0 mm to 1.5 mm thick measured axially; and
each wall separating one groove from another groove is 1.0 mm to 2.0 mm thick measured radially.

Assignees

• Hp Indigo Bv

Inventors

• Chang Seongsik
• Mcgarry John Tierney
• Lee Michael

Classifications

• G03G15/757 Primary

  Drive mechanisms for photosensitive medium, e.g. gears · CPC title

• F16H55/32

  Friction members · CPC title

• G03G15/025 Primary

  by bringing a charging member in the vicinity with the member to be charged, e.g. proximity charging, forming microgap · CPC title

• G03G21/1647

  Mechanical connection means · CPC title