| 摘要 |
PROBLEM TO BE SOLVED: To enable to supply a toner precisely below an aperture and obtain a necessary image density and contrast. SOLUTION: The aperture electrode 1 of the image forming system is constructed of an insulating sheet 2, a control electrode 4 is formed on the insulating sheet 2 in the form of a stripe, many apertures 6 are formed in a row in the longitudinal direction of the aperture electrode 1 at the end thereof. A triangular trap hole 5 with a depth of 10m is provided in a part corresponding to the end of the control electrode 4 on the opposite face on which the control electrode 4 is formed. A toner 16 to be supplied to a toner carrying roller 14 is held in the trap hole 5, a toner to be supplied subsequently is guided below the aperture 6 by the toner 16 held in the trap hole 5. |
