Patent ID: 6633736
Filing Date: 2003-10-14
Classification: G03G

Abstract:
An image informing apparatus using an electrophotographic developing system, comprising:a photosensitive drum positioned along a path for conveyance of articles of recording media through said system; a manual paper feed tray attachable to said system while introducing the articles of recording media onto said path via a first avenue; a cassette associated with said system to introduce other articles of recording media onto said path via a second and different avenue; a manual paper feed sensor positioned along said first avenue to automatically sense a passage of a sheet of recording media fed from said manual paper feed tray and produce a first signal when the sheet of recording medium is fed into said path from said manual paper feed tray; an engine controller generating one of a first control signal and a second control signal in dependence upon reception of said first signal sent from said manual paper feed sensor; a transfer voltage generator generating a first transfer voltage when said first control signal is received from said engine controller and generating a second transfer voltage different from said first transfer voltage when said second control signal is received from said controller; a transfer unit receiving one of said first and second transfer voltages applied from said transfer voltage generator to transfer an image representing information, formed by toner on said photosensitive drum to said sheet of recording medium; an operating panel; a video controller comprising a computer interface a video control unit, said computer interface being connected between a host computer and said video control unit, said computer interface providing an interface for an input and an output signal between said host computer and said video controller, said video controller comprising a memory storing data input from said operating panel and from said host computer and changing code data received from said computer interface into image data; and a print control unit comprising a video interface, said engine controller, an input/output interface, a sensor circuit, and said transfer voltage generator, said video interface providing an interface transmitting and receiving signals between said video controller and said engine controller, said engine controller controlling each unit of the print control unit and initiating printing of image data received from the video controller on said recording media, said input/output interface being connected between said engine controller and both said sensor circuit and said voltage transfer generator, said sensor sensing operational states of said print control unit.