US 12,282,267 B2
Electrophotographic control in imaging devices, including sensing current between a developer roll and drum pertaining to current of a latent image and a paschen breakdown
Marc Cousoulis, Lexington, KY (US); Michael Charles Day, Lexington, KY (US); Kweku Korsah, Lexington, KY (US); Jared Kouhui Lin, Lexington, KY (US); David William Shuman, Lexington, KY (US); and Matthew Russell Smither, Frankfort, KY (US)
Assigned to LEXMARK INTERNATIONAL, INC., Lexington, KY (US)
Filed by LEXMARK INTERNATIONAL, INC., Lexington, KY (US)
Filed on Jan. 2, 2023, as Appl. No. 18/092,368.
Application 18/092,368 is a continuation of application No. 18/080,848, filed on Dec. 14, 2022, abandoned.
Prior Publication US 2024/0201614 A1, Jun. 20, 2024
Int. Cl. G03G 15/08 (2006.01); G03G 15/00 (2006.01); G03G 15/02 (2006.01); G03G 15/043 (2006.01)
CPC G03G 15/0808 (2013.01) [G03G 15/0266 (2013.01); G03G 15/043 (2013.01); G03G 15/5004 (2013.01); G03G 2215/00632 (2013.01); G03G 2215/066 (2013.01)] 17 Claims
OG exemplary drawing
 
1. In an imaging device having a photoconductive drum opposed by developer roll to provide toner to the drum to develop a latent image on the drum for transfer to media or an intermediate transfer member and later the media, further including a power supply in communication with a controller, a method comprising:
with the power supply, setting a first voltage on a charge roll that creates a second voltage on a surface of the drum;
based on the first and second voltages, transferring the toner from a developer roll to the drum; and
sensing a current between the developer roll and the drum, including determining a first current of the latent image and a second current of a Paschen breakdown voltage, measured after manufacturing, between the developer roll and the drum.