Patent ID: 6438344
Filing Date: 2002-08-20
Classification: G03G

Abstract:
A developer comprising:a container for holding developing material; a partition dividing the container into a first chamber and a second chamber, the partition being formed with first and second openings for causing the first and the second chambers to communicate with each other, the partition being also formed with a third opening above the second opening for introducing an excessive amount of developing material from the second chamber into the first chamber; a first screw arranged in the first chamber for transferring the developing material from the second opening to the first opening; a second screw arranged in the second chamber for transferring the developing material from the first opening to the second opening; a developer roller arranged generally in parallel to the second screw and including a cylindrical surface onto which the developing material in the second chamber is supplied; a blade arranged above the second screw for scraping off an excessive amount of developing material; and adjusting means for controlling a quantity of the developing material passing through the third opening.