Recorders – Printing – dotting – or punching marker – Ink transfer support or moving means
Patent
1991-02-05
1992-09-08
Reinhart, Mark J.
Recorders
Printing, dotting, or punching marker
Ink transfer support or moving means
358298, 355246, H04N 121
Patent
active
051462400
ABSTRACT:
An image forming apparatus which forms an image on a recording medium at a number of different dot densities. The image forming apparatus includes a light source part for emitting a light beam, a light detection part for detecting a light beam from the light detection part detecting a light beam from the light source part and for supplying a signal indicative of a power of the detected light beam when a monitored voltage obtained by the light beam is approximately equal to a reference voltage, a memory part for storing a number of power data corresponding to the number of different dot densities, an input part for inputting a first dot density selected, a power data control part for supplying a signal indicative of a changed power data which is changed from a value of said power of the detected light beam with a power data stored in the memory means which is located by the selected first dot density, and a driving part for operating the light source with the signal from the power data control part allowing the light source to emit a light beam with the changed power, the changed power being appropriate for forming an image on the recording medium at the selected first dot density.
REFERENCES:
patent: 4746987 (1988-05-01), Traino et al.
patent: 4856008 (1989-08-01), Senma et al.
patent: 4926433 (1990-05-01), Imamura et al.
patent: 4977414 (1990-12-01), Shimada et al.
Araki Shigeyuki
Hayashi Takamasa
Isobe Takundo
Miyajima Masami
Mori Goro
Reinhart Mark J.
Ricoh & Company, Ltd.
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