| 摘要 |
<p>A liquid electrophotographic development system has a plurality of removable cartridges (11) mounted on a rotatable support for selective engagement with an electrophotographic member (13) to be developed. Each cartridge (11) has a liquid developer reservoir (29) and a flexible toner concentrate container (26) from which concentrate is supplied to the developer in the reservoir as needed. A fluted roll (30) pumps developer in a uniform manner from the reservoir (29) to the electrophotographic member (13). After depletion of the toner concentrate and developer, any developer remaining in the cartridge (11) can be pumped into the flexible container (26) to prevent spillage on disposal of the cartridge. The cartridge housing has only one opening (12) and minimum-size passages (32, 33, 34) between the reservoir (29) and the opening (12) to inhibit evaporation of developer liquid.</p> |
