| 摘要 |
The invention relates to an image forming apparatus in which image information is converted into a pattern of electrostatic fields for modulating a transport of charged toner particles from a particle carrier toward a back electrode member. The image forming apparatus includes a background voltage source for producing a background electric field which enables a transport of charged toner particles from said particle carrier towards said back electrode member; a printhead structure arranged in said background electric field, including a plurality of apertures and control electrodes arranged in conjunction to the apertures; said apertures being positioned along at least one row thereby defining a plurality of intermediate areas which are positioned between each two adjacent apertures, control voltage sources for supplying control potentials to said control electrodes in accordance with the image information to selectively permit or restrict the transport of charged toner particles from the particle carrier through the apertures; and an image receiving member caused to move in relation to the printhead structure for intercepting the transported charged particles in image configuration. The invention is characterized in that each said intermediate area comprises an inclining section sloping downwards in a direction from each of said adjacent apertures, towards a recessed section positioned in said intermediate area. |
