Image forming apparatus
First Claim
1. An image forming apparatus in which a toner layer is formed onto a developing roller which is restricted by a toner restricting member and rotated, toner is supplied to an image holding body by said toner layer, a toner image is formed onto said image holding body, the toner image is transferred onto a print medium, and an image is formed, comprising:
- counting section which counts the toner image, on a dot unit basis, which is formed on the image holding body; and
control section which restricts the rotation of said developing roller when a count value of said counting section is equal to or larger than a predetermined reference value.
1 Assignment
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Accused Products
Abstract
An image forming apparatus in which a toner layer is formed onto a developing roller which is restricted by a toner restricting member and rotated, toner is supplied to a photosensitive drum by the toner layer, and a toner image is formed onto the drum and transferred onto a print medium, thereby forming an image. The apparatus has: a counter which counts the toner image, on a dot unit basis, formed on the drum and a control unit which stops the rotation of the developing roller for a predetermined time and intermittently executes a series of image forming operation when a count value is equal to or larger than a predetermined reference value. The occurrence of filming is prevented by preventing an increase in toner temperature.
14 Citations
12 Claims
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1. An image forming apparatus in which a toner layer is formed onto a developing roller which is restricted by a toner restricting member and rotated, toner is supplied to an image holding body by said toner layer, a toner image is formed onto said image holding body, the toner image is transferred onto a print medium, and an image is formed, comprising:
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counting section which counts the toner image, on a dot unit basis, which is formed on the image holding body; and
control section which restricts the rotation of said developing roller when a count value of said counting section is equal to or larger than a predetermined reference value. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An image forming apparatus in which a toner layer is formed onto a developing roller which is restricted by a toner restricting member and rotated, toner is supplied to an image holding body by said toner layer, a toner image is formed onto said image holding body, the toner image is transferred onto a print medium, and an image is formed, comprising:
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counting section which counts the toner image, on a dot unit basis, which is formed on the image holding body; and
control section which changes a voltage that is applied to said developing roller when a count value of said counting section is equal to or larger than a predetermined reference value. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification