| 摘要 |
PURPOSE:To prevent the uneven image occurring in uneven electrostatic charge with a small sized device or an image having too much solid black having no gradation by using a hollow developer as a developer. CONSTITUTION:The toner as a developer is satisfactory as far as the toner is hollow. If the size of the space occupying in each individual toner, i.e., voids are too large, the toner is brittle to the external force during agitating in a developing device 4 and therefore the toner particles are likely to be broken prior to contribution to prescribed development. The voids of the toner are therefore up to about 60-70% at the highest. The uneven image occuring in uneven charging with the small sized device or formation of an image having too much solid black having no gradation is prevented by using such toner. |
