Photocopying – Contact printing – Light boxes
Patent
1994-11-08
1996-05-28
Royer, William J.
Photocopying
Contact printing
Light boxes
118694, 355203, G03G 2100
Patent
active
055216846
ABSTRACT:
An image forming apparatus includes an image carrier, a developer for developing an electrostatic latent image on the image carrier, a transfer device for transferring the developed image on the image carrier onto a transfer medium, a feed device for feeding the transfer medium to a transfer portion by the transfer device, and an optical element for optically detecting the amount of developing agent in the developer. The optical element is arranged at a side opposite to the developer with respect to the convey path of the transfer medium.
REFERENCES:
patent: 5398106 (1995-03-01), Eguchi
patent: 5428427 (1995-06-01), Lee
Canon Kabushiki Kaisha
Royer William J.
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