Photocopying – Contact printing – Light boxes
Patent
1994-05-24
1996-06-25
Ramirez, Neston R.
Photocopying
Contact printing
Light boxes
355298, G03G 2110
Patent
active
055305210
ABSTRACT:
A method and apparatus for sensing state of a waste toner box of a system during an electrophotographic developing process. The apparatus and method sense whether or not a waste toner receptacle has been installed prior to initiation of the development process and whether the receptacle is full of waste toner. The receptacle has a semi-transparent body for storing a waste toner removed from a cleaning blade, a photosensor for generating a signal representing whether the waste toner stored in the waste toner receptacle has substantial filled the receptacle as well as whether the waste toner receptacle has been installed. A light emitting unit and a light receiving unit are respectively installed on opposite sides of the receptacle from each other, facing the waste toner receptacle, to sense whether or not the waste toner receptacle has been installed and whether the receptacle is full, a controller for receiving the signal from the photosensor, for determining the presence or absence of the waste toner box and whether the receptacle is full of the waste toner, and for generating respective control signals corresponding to the states of the waste toner receptacle and the waste toner within the receptacle, and a visual display providing a message indicating the presence or absence of the waste toner receptacle, and whether the receptacle is full of waste toner, or whether a normal state exists, on the basis of the respective control signals from the controller.
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Bushnell Robert E.
Ramirez Neston R.
Samsung Electronics Co,. Ltd.
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