IMAGE FORMING APPARATUS AND CONTROL PROGRAM
First Claim
1. An image forming apparatus comprising:
- an image carrier that carries and transports a latent image;
a charging member that is arranged to be in contact with a surface of the image carrier;
a developing device that supplies toner to the image carrier and forms a toner image;
a density detection unit that detects a density of the toner image;
a pattern detection unit that detects a predetermined density variation pattern based on a detection result of the density detection unit according to the toner image; and
a determination unit that determines a state of the charging member based on the number of the predetermined density variation patterns detected within a predetermined period of time.
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Accused Products
Abstract
An image forming apparatus includes: an image carrier that carries and transports a latent image; a charging member that is arranged to be in contact with a surface of the image carrier; a developing device that supplies toner to the image carrier and forms a toner image; a density detection unit that detects a density of the toner image; a pattern detection unit that detects a predetermined density variation pattern based on a detection result of the density detection unit according to the toner image; and a determination unit that determines a state of the charging member based on the number of the predetermined density variation patterns detected within a predetermined period of time.
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Citations
17 Claims
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1. An image forming apparatus comprising:
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an image carrier that carries and transports a latent image; a charging member that is arranged to be in contact with a surface of the image carrier; a developing device that supplies toner to the image carrier and forms a toner image; a density detection unit that detects a density of the toner image; a pattern detection unit that detects a predetermined density variation pattern based on a detection result of the density detection unit according to the toner image; and a determination unit that determines a state of the charging member based on the number of the predetermined density variation patterns detected within a predetermined period of time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A non-transitory recording medium storing a computer readable control program of an image forming apparatus including a charging member that is arranged to be in contact with a surface of an image carrier, the control program causing a computer to execute processing comprising the steps of:
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forming a toner image on the image carrier; detecting a density of the toner image; detecting a predetermined density variation pattern based on the detected density; calculating the number of the predetermined density variation patterns detected within a predetermined period of time; and determining a state of the charging member based on the calculated number of the detected density variation patterns.
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Specification