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US 4,277,549 AGranted
Copy image adjustment method
AssigneeRicoh Company, Ltd.
InventorsSusumu Tatsumi, Tadahiro Eda, Chikara Imai
Life of this patent
Estimating the term…
Abstract
In an electrophotographic copying machine, the copy image adjustment method for correcting copy image characteristics comprises the steps of measuring copying characteristics by use of a reference original and resetting development characteristics in accordance with the measurement results.
Claims10
A copy image adjustment method for correcting copy image development characteristics for use in electrophotography comprising:
- making a first standard copy image by copying a standard original;
- copying said first standard copy image to make a second image;
- detecting the image density of said standard copy during the copying process thereof to produce a detecting signal corresponding to the image density;
- and
- resetting the development characteristics according to the detecting signal which is produced when the image density of said standard copy is detected.
2 more elements
A method of adjusting a copy image development characteristic in an electrophotographic device comprising:
- making a copy of a standard original;
- making a latent copy image of the standard original and the copy;
- detecting the potential of a standard original portion of the latent copy image and a copy portion of the latent copy image;
- comparing the potentials of each portion to each other;
- and
- adjusting the development characteristic according to the results of the comparison.
3 more elements
Dependencies are inferred from the claim text.