Charging voltage control method of image forming apparatus using constant voltage control and image forming apparatus thereof
AssigneeSamsung Electronics Co., Ltd.
InventorJeong-Jai CHOI
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Abstract
A charging voltage control method of an image forming apparatus and an image forming apparatus thereof. The charging voltage control method of the image forming apparatus includes: applying a charging voltage amount determined by referring to a basic lookup table which determines the charging voltage based on a system load; and correcting the applied charging voltage by using a first correction value which is determined based on a first correction lookup table which determines the first correction value based on a difference between a target current corresponding to the lifespan of the charging roller and a charging current.
Claims22
A charging voltage control method of an image forming apparatus, comprising:
- applying a charging voltage amount determined by referring to a basic lookup table which determines the charging voltage based on a system load;
- and
- correcting the applied charging voltage by using a first correction value which is determined based on a first correction lookup table which determines the first correction value using a difference between a target current corresponding to the lifespan of the charging roller and a charging current.
An image forming apparatus, comprising:
- an image carrying body on which a latent image is formed;
- a charging roller which charges a surface of the image carrying body to form the latent image;
- a voltage supplying unit which applies a charging voltage to charge the surface of the image carrying body to the charging roller;
- and
- a control unit which controls the voltage supplying unit to apply the charging voltage of an amount determined by referring to a basic lookup table which determines the charging voltage based on a system load and to correct the applied charging voltage by using a first correction value which is determined based on a first correction lookup table which determines the first correction value using a difference between a target current corresponding to a lifespan of the charging roller and a charging current.
A method of controlling a charging voltage of a charging roller of an image forming apparatus, the method comprising:
- applying a charging voltage to the charging roller corresponding to a system load and an operating environment;
- generating a corrected charging voltage using the applied charging voltage and a correction value from at least one correction lookup table, the correction value corresponding to the applied charging voltage;
- and applying the corrected charging voltage to the charging roller.
An image forming apparatus including a photosensitive medium on which to form an image, the image forming apparatus comprising:
- a charging roller to charge a surface of the photosensitive medium;
- a voltage supplying unit to apply a charging voltage to the charging roller corresponding to a system load and an operating environment;
- and
- a control unit to generate a corrected charging voltage using the applied charging voltage and a correction value from at least one correction lookup table that corresponds to the applied charged voltage, and to control the voltage supplying unit to apply the corrected charging voltage to the charging roller.
Dependencies are inferred from the claim text.