Image forming apparatus

Details Image forming apparatus Image forming apparatus

2006-12-26

2006-12-26

Tran, Huan (Department: 2861)

Incremental printing of symbolic information

Electric marking apparatus or processes

Electrostatic

C347S236000

Reexamination Certificate

active

07154517

ABSTRACT:
This invention provides an image forming apparatus that can suppress variations in writing densities of LED heads and form stable images.An image forming apparatus has an image retainer1for retaining a toner image, an image writing unit3equipped with a plurality of LED heads31to form a static latent image the image retainer1, a developing unit4for developing the static latent image formed by the image writing unit3with a developing agent, a patch formation controller23for forming patches for each LED head on the image retainer1, a density detector25for detecting the density of each patch formed by the patch formation controller23, and a correction controller26for correcting the light amount of each LED head by the density detected by the density detector25.

REFERENCES:
patent: 5808651 (1998-09-01), Horiuchi
patent: 6147698 (2000-11-01), Zable et al.
patent: 6831672 (2004-12-01), Maeda
patent: 08-230234 (1996-09-01), None
patent: 2000-071508 (2000-03-01), None
patent: 2001-310498 (2001-11-01), None
patent: 2003-127459 (2003-05-01), None
* English Abstract for JP 2000-071508.

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