Duplex electro-photographic developing machine and method of...

Details Duplex electro-photographic developing machine and method of... Duplex electro-photographic developing machine and method of...

2005-07-12

2005-07-12

Ngo, Hoang (Department: 2852)

Electrophotography

Control of electrophotography process

Responsive to copy media characteristic

C399S044000, C399S055000, C399S058000

Reexamination Certificate

active

06917771

ABSTRACT:
A duplex electro-photographic developing machine including a printing medium tray loading a printing medium, a tray open/closed detecting unit detecting whether the printing medium tray has been opened and closed, a transferring roller transferring a toner image onto the printing medium, a resistance measuring unit measuring a resistance value of the printing medium passing the transferring roller, and a concentration controlling unit controlling a concentration of the toner image according to the measured resistance value measured by the resistance measuring unit in response to the printing medium tray having changed from an open state to a close state.

REFERENCES:
patent: 5966557 (1999-10-01), Wada
patent: 6047144 (2000-04-01), Sasai et al.

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