Image forming apparatus having a plurality of image forming speeds
AssigneeCanon Kabushiki Kaisha
InventorsYuichiro Toyohara, Ken-ichiro Kitajima
Life of this patent
Estimating the term…
Abstract
An image forming apparatus includes a plurality of image forming devices for forming respective monochromatic images in accordance with input image signals. The apparatus is operable in a first mode for forming a multi-color image by the plurality of image forming devices at a first image formation speed and in a second mode for forming a multi-color image by the plurality of image forming devices at a second image formation speed. The apparatus also includes an execution device for executing, for respective image formation speeds, calibrating operations for correcting image density levels of output images formed by the image forming devices in response to image density levels of the input image signals.
Claims18
An image forming apparatus comprising:
- image forming means for forming an image in accordance with an input image signal,
- wherein said image forming apparatus is operable in a first mode for forming the image by said image forming means at a first image formation speed and in a second mode for forming the image by said image forming means at a second image formation speed, which is different from the first image formation speed;
- and
- execution means for executing, for respective image formation speeds, calibrating operations for calibrating density of an output image formed by said image forming means in response to the input image signal.
An image forming apparauts comprising:
- image forming means for forming an image in accordance with an input image signal,
- wherein said iamge forming apparatus is operable in different image forming modes;
- and
- a processor for forming a gradation pattern by said image forming means in each of the image forming modes,
- wherein said processor corrects conversion properties indicative of relations between input image signals and output image densities on the basis of image densities of the graduation patterns formed in corresponding image forming modes.
Dependencies are inferred from the claim text.