Image forming apparatus for synthesizing a differential peak signal and an image signal
AssigneeMinolta Co., Ltd.
InventorsYoshinobu Hada, Masaki Tanaka, Kazuyuki Fukui, Kouichi Etou
Life of this patent
Estimating the term…
Loading patent…
AssigneeMinolta Co., Ltd.
InventorsYoshinobu Hada, Masaki Tanaka, Kazuyuki Fukui, Kouichi Etou
Estimating the term…
In a digital image forming apparatus, the intensity or the pulse width of laser beam exposure is modulated according to image signals of a document detected by a sensor. A peak waveform having a peak is generated in each light-emitting period of laser beam. For example, and a signal having a peak is synthesized with the image signals to generate the peak waveform. Thus, the laser is driven according to the peak waveforms so that the exposed portions on a photoconductor in correspondence to the peaks are exposed with a larger quantity of light at low densities. Then, the amount of the gamma correction can be decreased and the gradation characteristic can be stabilized.
An image forming apparatus for forming an image with electrophotographic process, comprising:
An image forming apparatus for forming an image with electrophotographic process, comprising:
An image forming apparatus comprising:
An image forming apparatus for forming an image with electrophotographic process, comprising:
An image forming apparatus for forming an image with electrophotographic process, comprising:
Dependencies are inferred from the claim text.