Image forming apparatus and image forming head
US6499830B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 2001 |
| Grant date | Dec 31, 2002 |
| Priority date | — |
| Expiry date | May 11, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2217/0025
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An image forming apparatus for use in a printer for computers and the like includes an image forming head (7) between a developing sleeve (2) and an opposing electrode. (6). Control electrodes (19) are provided around respective openings (16) of the head (7), so that the openings (16) are electrostatically opened and closed by controlling a voltage applied to the respective control electrodes (19). In order to prevent the openings (16) of the head (7) from being clogged with toner (5), the percentage of the area of the opening (16) to the sum of the area of the extent of the control electrode (19) around the opening (16) and the area of the opening (16) is set to 8% or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.