Image forming apparatus for adjusting gradation using subsidiary exposure
AssigneeFuji Photo Film Co., Ltd.
InventorAtsushi Takagi
Life of this patent
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Abstract
When to perform subsidiary exposure before or after main exposure or concurrently therewith with a quantity of light corresponding to about 1/50 to 1/100 of the quantity of light of main exposure, an image forming apparatus according to the present invention can automatically set the standard conditions of subsidiary exposure in response to setting of the standard conditions of main exposure, and can set the optimal conditions of colors and intensity of subsidiary exposure in accordance with the amount of adjustment of gradation. Therefore, even when variations arise in the characteristics and processing conditions of a light-sensitive material or any desired gradation is chosen, natural and fine images can always be formed with no color balance distorted.
Claims15
An image forming apparatus in which a gradation of an image being formed on a light-sensitive material is adjusted by subsidiary exposure, said apparatus comprising:
- exposure means for performing subsidiary exposure on the light-sensitive material in accordance with adjustable subsidiary exposure conditions and for performing main exposure on the light-sensitive material in accordance with main exposure conditions, the adjustable subsidiary exposure conditions including color and intensity conditions;
- and
- control means for controlling said exposure means to perform the subsidiary exposure and the main exposure, and for adjusting the gradation by setting the color and intensity conditions of the subsidiary exposure in accordance with an amount of adjustment of the gradation.
An image forming apparatus in which gradation of an image being formed is adjusted by subsidiary exposure, said apparatus comprising:
- exposure means for performing the subsidiary exposure in accordance with subsidiary exposure conditions and for performing main exposure in accordance with main exposure conditions;
- a memory unit for storing a relationship between standard subsidiary exposure conditions of said subsidiary exposure and standard main exposure conditions of main exposure with no subsidiary exposure performed, the subsidiary exposure conditions including color and intensity conditions;
- and
- means for automatically setting the color and intensity conditions of said subsidiary exposure from the standard main exposure conditions of said main exposure in accordance with the relationship stored in said memory unit.
A method for forming an image on a light-=sensitive material, said method comprising the steps of:
- (a) selecting a desired gradation for the image to be formed on the light-sensitive material;
- (b) automatically setting predetermined color and intensity subsidiary exposure conditions in accordance with the desired gradation;
- (c) performing subsidiary exposure on the light-sensitive material in accordance with the predetermined color and intensity subsidiary exposure conditions;
- and
- (d) performing main exposure on the light-sensitive material in accordance with predetermined main exposure conditions.
Dependencies are inferred from the claim text.