Patent ID: 8442407

Claim:
A method of developing a latent image recorded on a surface using a development system, the development system including a chamber storing a supply of developer material therein, a transport member, a donor member, an electrode wire, a temperature control system configured to control a temperature associated with the developer material to a target temperature and a humidity sensor configured to measure the humidity associated with the developer material, wherein the transport member is configured to transport the developer material to the donor member, and the donor member and electrode wire are configured to form a cloud of developer material in a space between the electrode wire and the surface to develop the latent image on the surface, the method comprising: a) measuring the humidity associated with the developer material; b) the temperature control system controlling the temperature of the developer material as a function of the measured humidity, the temperature of the developer material being increased as the measured humidity increases thereby increasing a tribo-electric charge associated with the development material within the chamber, and the temperature of the developer material being decreased as the measured humidity decreases thereby decreasing the tribo-electric charge associated with the developer material within the chamber, wherein the function includes a maximum temperature value T max , a minimum temperature value T min , a maximum humidity value GOW max , and a minimum humidity value GOW min , and if the measured humidity is less than GOW min , then the temperature associated with the developer material is controlled to target temperature T min ; if the measured humidity is greater than GOW max , then the temperature associated with the developer material is controlled to target temperature T max ; c) mixing the developer material with magnetic carrier granules, thereby producing a tribo-electrically charged developer material; d) magnetically transporting the developer material from the chamber to the transport roll; e) transporting the developer material from the transport roll to the donor roll by applying a development field voltage (Vdm) between the donor member and the transport member; and f) electrically biasing the electrode wire to detach the developer material from the donor roll to form the cloud of developer material in the space between the electrode wire and the surface to develop the latent image.