Image forming apparatus having image color gamut enlargement mode
First Claim
1. An image forming apparatus, for forming an image on a recording medium based on image data, comprising:
- an image bearing member on which an electrostatic image is formed;
a developer bearing member configured to bear a developer for developing the electrostatic image formed on the image bearing member; and
a controller configured to be capable of executing a normal mode in which the electrostatic image formed on the image bearing member is developed by setting a peripheral velocity ratio of the developer bearing member to the image bearing member to a prescribed peripheral velocity ratio, and a color gamut enlargement mode in which a color gamut of an image to be formed on the recording medium is enlarged as compared to the normal mode by setting the peripheral velocity ratio of the developer bearing member to the image bearing member to a higher peripheral velocity ratio than the peripheral velocity ratio in the normal mode,wherein the controller is configured to identify whether or not image color gamut information included in the image data is within a range for the normal mode, and execute the normal mode for forming an image in a case where the image color gamut information is within the range, and execute the color gamut enlargement mode in a case where the image color gamut information is outside of the range.
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Accused Products
Abstract
An image forming apparatus includes a controller capable of executing a normal mode in which an electrostatic image formed on an image bearing member is developed by setting a peripheral velocity ratio of a developer bearing member relative to the image bearing member to a prescribed peripheral velocity ratio, and a color gamut enlargement mode in which a color gamut of an image to be formed on a recording medium is enlarged as compared to the normal mode by setting the peripheral velocity ratio of the developer bearing member relative to the image bearing member to a larger peripheral velocity ratio than the peripheral velocity ratio in the normal mode, wherein the controller identifies image color gamut information included in image data and forms an image by selecting the normal mode or the color gamut enlargement mode in accordance with the image color gamut information.
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Citations
12 Claims
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1. An image forming apparatus, for forming an image on a recording medium based on image data, comprising:
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an image bearing member on which an electrostatic image is formed; a developer bearing member configured to bear a developer for developing the electrostatic image formed on the image bearing member; and a controller configured to be capable of executing a normal mode in which the electrostatic image formed on the image bearing member is developed by setting a peripheral velocity ratio of the developer bearing member to the image bearing member to a prescribed peripheral velocity ratio, and a color gamut enlargement mode in which a color gamut of an image to be formed on the recording medium is enlarged as compared to the normal mode by setting the peripheral velocity ratio of the developer bearing member to the image bearing member to a higher peripheral velocity ratio than the peripheral velocity ratio in the normal mode, wherein the controller is configured to identify whether or not image color gamut information included in the image data is within a range for the normal mode, and execute the normal mode for forming an image in a case where the image color gamut information is within the range, and execute the color gamut enlargement mode in a case where the image color gamut information is outside of the range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An image forming apparatus, for forming an image on a recording medium based on image data, comprising:
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an image bearing member on which an electrostatic image is formed; a developer bearing member configured to bear a developer for developing the electrostatic image formed on the image bearing member; and a controller configured to be capable of executing a normal mode in which the electrostatic image formed on the image bearing member is developed by setting a peripheral velocity ratio of the developer bearing member to the image bearing member to a prescribed peripheral velocity ratio, and a color gamut enlargement mode in which a color gamut of an image to be formed on the recording medium is enlarged as compared to the normal mode by setting the peripheral velocity ratio of the developer bearing member to the image bearing member to a higher peripheral velocity ratio than the peripheral velocity ratio in the normal mode, wherein the controller is configured to identify image color gamut information included in the image data, and form an image by selecting the normal mode or the color gamut enlargement mode in accordance with the image color gamut information, wherein in the color gamut enlargement mode, a color gamut of an image to be formed on the recording medium is enlarged as compared to the normal mode by setting a peripheral velocity of the developer bearing member to a higher peripheral velocity than a peripheral velocity of the image bearing member, and wherein in the color gamut enlargement mode, the peripheral velocity of the developer bearing member is set to a higher peripheral velocity than the peripheral velocity of the image bearing member by reducing the peripheral velocity of the image bearing member.
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Specification