| 摘要 |
<p>The method involves creating an electrostatic charge of predetermined magnitude on an area of the charge-retentive surface, thus creating a test patch in the area. Toner is electrostatically applying in a manner consistent with a desired toner density on the test patch. The actual toner density on the test patch is measured to indicate a measured toner density. The magnitude of the development field is changed in response to the measured toner density, to obtain the desired toner density on a subsequent test patch. A quantity of toner is added to the quantity of developer material in response to the development field being changed to exceed a predetermined magnitude.</p> |
