JP2016071043A5 - - Google Patents

Description

Therefore, an object of the present invention is to easily and inexpensively determine a new part of a part of a unit.

To achieve the above object, the present invention, each exchange an image bearing member for bearing an image formed on a recording medium, and a charging member for charging said image bearing member, said charging member and said image bearing member An image forming apparatus capable of applying a voltage to the charging member , a current detecting unit for detecting a current flowing in the image carrier when the voltage applying unit is applied, and the current If the detection current by the detection means is a first current value that is below a predetermined current range, it is determined that the image carrier is new, and the detection current is a second value that exceeds the predetermined current range. If a current value is characterized by having a control means for determining that said charging member is new.

According to the present invention, it is possible to easily and inexpensively determine a new part of a part of a unit.

Claims (12)

An image bearing member for bearing an image formed on a recording medium, and a charging member for charging said image bearing member, said charging member and said image bearing member to a respective replaceable image forming apparatus,
Voltage applying means for applying a voltage to the charging member ;
Current detecting means for detecting a current flowing in the image carrier when the voltage applying means is applied; and
If the current detected by the current detection means is a first current value that is lower than a predetermined current range, it is determined that the image carrier is new, and the detected current exceeds the predetermined current range. If a second current value, the image forming apparatus characterized by and a control means for determining that said charging member is new. The control means changes the voltage value applied to the charging member by the voltage applying means when forming an image on a recording medium in accordance with the image carrier or the charging member determined to be new. The image forming apparatus according to claim 1, wherein: The control means is configured such that the detection current is a current value that is lower than the first current value and is lower than the predetermined current range by a predetermined amount, or a current value that is higher than the second current value and the predetermined current value. 3. The image forming apparatus according to claim 1, wherein an error is displayed on the display unit when the current range exceeds a predetermined amount. 4. The image forming apparatus according to claim 1, wherein the image carrier and the charging member are each attached to a replacement unit that is replaceable with respect to the image forming apparatus in a replaceable manner. 5. . Storage means for storing the previous detection result by the current detection means;
The control means determines that the image carrier or the charging member has been replaced if the difference between the current detected by the current detection means and the previous detection result stored in the storage means is greater than or equal to a predetermined difference amount. The image forming apparatus according to claim 1 , wherein the image forming apparatus is an image forming apparatus. It said control means detects a current by said current detecting means, when the a predetermined current range,
If the difference between the previous detection result of the above the predetermined difference amount, determining that the charging member and the image bearing member is replaced with a co, if the difference is less than the predetermined difference amount are both replaced The image forming apparatus according to claim 5, wherein the image forming apparatus is determined not to be performed. Further have a counting means for counting the operation history of the charging member and the image bearing member,
The control means, the said image bearing member or the charging member is determined that new by the detection current when the difference between the previous detection result and the detection current which the storage means stores is greater than or equal the predetermined difference amount resets the operation history that the counting means of the image bearing member or the charging member is determined that new has counted, the difference between the previous detection result even when the said image bearing member or the charging member is determined that the new is the given in the case of less than the difference quantity, the image forming apparatus according to claim 5 or claim 6 characterized in that it does not reset the operation history. It further has an environment detection means for detecting the environment,
Said control means in response to said detection result environment detection means, the image formation according to any one of claims 1 to 7, wherein changing the value of the predetermined current range is determined that the new apparatus. An image forming apparatus comprising: an image carrier that carries an image to be formed on a recording medium; and a charging member that charges the image carrier, wherein the image carrier and the charging member can be respectively replaced.
Voltage applying means for applying a voltage to the charging member;
Current detecting means for detecting a current flowing in the image carrier when the voltage applying means is applied; and
Control means capable of changing a voltage value applied to the charging member by the voltage applying means when forming an image on a recording medium,
In the case where the current detected by the current detection means is a first current value lower than a predetermined current range, the control means determines the voltage value to be applied to the charging member when the image carrier is new. When the detection current is a second current value exceeding the predetermined current range, the voltage value applied to the charging member when the charging member is new is applied to the voltage applying means. An image forming apparatus characterized by being applied to the means. The control means is configured such that the detection current is a current value that is lower than the first current value and is lower than the predetermined current range by a predetermined amount, or a current value that is higher than the second current value and the predetermined current value. The image forming apparatus according to claim 9, wherein an error is displayed on the display unit when the current range exceeds a predetermined amount. An image forming apparatus comprising: an image carrier that carries an image to be formed on a recording medium; and a charging member that charges the image carrier, wherein the image carrier and the charging member can be respectively replaced.
Voltage applying means for applying a voltage to the charging member;
Current detecting means for detecting a current flowing in the image carrier when the voltage applying means is applied; and
Counting means for counting the operation history of the image carrier and the charging member,
The counting means resets the counted operation history of the image carrier when the current detected by the current detecting means is a first current value lower than a predetermined current range. When the second current value exceeds the current range, the counted operation history of the charging member is reset. Storage means for storing the previous detection result by the current detection means;
When the difference between the current detected by the current detection means and the previous detection result stored in the storage means is less than a predetermined difference amount, the counting means counts the image carrier regardless of the value of the detection current. The image forming apparatus according to claim 11, wherein the body operation history and the counted operation history of the charging member are not reset.