Image processing apparatus for performing density conversion
AssigneeCanon Kabushiki Kaisha
InventorKimiyoshi Hayashi
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Abstract
According to this invention, an image processing apparatus separates a color original into a plurality of color signal components and sequentially reads the color signal components by read means so as to sequentially form images corresponding to the color signal components on a photosensitive body. In this apparatus, at least two color signal components of a color image to be synthesized with the color original are simultaneously read and are stored in an image memory by the read means, and upon image synthesis, the color signal components are read out from the image memory in synchronism with color signal components read by the read means.
Claims40
A color image processing system, comprising:
- a color scanner for converting a color original into a color image signal;
- a color printer for reproducing a color image corresponding to an input color image signal;
- a color memory for memorizing the color image signal;
- a combiner for combining a color image signal from said color scanner and a color image signal from said color memory;
- and
- controlling means for controlling said color scanner, and said color printer, and said combiner, said controlling means having a first mode for connecting said color scanner directly with said color printer, and a second mode for connecting said color scanner with said color printer through said color memory,
- wherein in the second mode, a color image signal from said color scanner not through said color memory, and a color image signal from said color memory, are combined by said combiner and outputted.
An image processing apparatus comprising:
- color component generating means for generating a plurality of color component signals;
- storage means for storing said plurality of color component signals generated by said generating means;
- a first selector for sequentially selecting color component signals in turn;
- a second selector for selecting either the color component signals selected by said first selector, or the corresponding color component signal read from said storage means, to produce a color component output signal;
- and
- control means for controlling the operation of the second selector so that it (i) selects the color component signal received from the storage means and outputs it as the color component output signal for a portion of an image area and (ii) selects the color component signal received from the first selector and outputs it as the color component output signal for another portion of the image area.
Dependencies are inferred from the claim text.