Photocopying – Contact printing – Light boxes
Patent
1994-01-26
1996-07-30
Ramirez, Nestor R.
Photocopying
Contact printing
Light boxes
355246, 355326R, G03G 2100
Patent
active
055417086
ABSTRACT:
An image density controlling device for an image formation apparatus includes a plurality of image formation devices. A plurality of transfer members carry an image formed by at least one of the plurality of image formation devices. A belt rotates synchronously with the operation of the image formation devices and carries the transfer members. The belt includes a plurality of transfer member carrying areas on which the plurality of the transfer members are respectively carried, and a plurality of non-carrying areas therebetween. A density detection toner image is formed in the non-carrying area by utilizing at least one of the plurality of image formation devices. The density of the density detection toner image is determined to output a density detection signal. The densities of the images transferred to the transfer members are then controlled in accordance with the density detection signal. The density detection toner image formed in each rotation cycle of the belt is cleaned off and formed again at a different position of the belt.
REFERENCES:
patent: 4684243 (1987-08-01), Minor
patent: 4894685 (1990-01-01), Shoji
patent: 5019859 (1991-05-01), Nash
patent: 5060013 (1991-10-01), Spence
patent: 5298944 (1994-03-01), Sawayama et al.
patent: 5313252 (1994-05-01), Castelli et al.
Fuji 'Xerox Co., Ltd.
Ramirez Nestor R.
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