Claims
- 1. A method of preparing a carrier, comprising the steps of:sieving a carrier core material using an ultrasonically vibrated sieve to obtain core particles having a content of particles having a particle diameter of 22 μm or less of 3% by weight or less; and coating said core particles with a resin.
- 2. A method as claimed in claim 1, wherein the ultrasonic wave is transmitted to said sieve through a resonant ring to which said sieve is secured.
- 3. A method of preparing a carrier, comprising the steps of:coating core particles with a resin; and sieving said coated core particles using an ultrasonically vibrated sieve to obtain carrier particles having a content of particles having a particle diameter of 22 μm or less of 3% by weight or less.
- 4. A method as claimed in claim 3, wherein the ultrasonic wave is transmitted to said sieve through a resonant ring to which said sieve is secured.
Priority Claims (1)
Number |
Date |
Country |
Kind |
11-327393 |
Nov 1999 |
JP |
|
Parent Case Info
This application is a division of application Ser. No. 09/713,201 filed on Nov. 16, 2000 now U.S. Pat. No. 6,472,118.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
5500319 |
Funato et al. |
Mar 1996 |
A |