Replacing part containing consumable part and image forming apparatus using replacing part

An image forming apparatus to which a replacing part containing a consumable including identifying means for storing therein identification data is loaded, and which has a reading-out unit for reading out the identification data from said replacing part,

• wherein said replacing part comprises an identification data storing unit for outputting peculiar identification data in accordance with a reading-out request made from said read-out unit;
• and a hysteresis holding unit for after having responded to the reading-out request, holding an initial read-out hysteresis in which the identification data is read out, and
• wherein said image forming apparatus comprises:
• a hysteresis processing unit for after the identification data has been read out from said identification data storing unit, executing the processing of holding an initial read-out hysteresis, in which the identification data is read out, for said hysteresis holding unit;
• an identification data storing unit in which identification data of said replacing part is stored;
• and
• a replacing part identification processing unit for comparing the read-out identification data with the identification data stored in said identification data storing unit, and if said hysteresis holding unit does not hold the read-out hysteresis when the identification data is not stored in said identification data storing unit, storing therein the read-out identification data in said identification data storing unit to permit the use of said replacing part.

An image forming apparatus to which a replacing part containing a consumable including identifying means for storing therein identification data is loaded, and which has a reading-out unit for reading out the identification data from said replacing part,

• wherein said replacing part includes an identification data storing unit for outputting peculiar identification data in accordance with a reading-out request made from said reading-out unit, and a hysteresis holding unit for storing data of a consumable level, and
• wherein said image forming apparatus comprises:
• an identification data storing unit in which identification data of said replacing part is stored;
• a consumable level detecting unit for measuring a consumable level;
• and
• a replacing part identification processing unit for when after the identification data and the data of the consumable level have been respectively read out from said identification data storing unit and said hysteresis holding unit, the read-out identification data matches the identification data stored in said identification data storing unit and also the read-out consumable level matches the measured consumable level, permitting the use of said replacing part to store the data of the measured consumable level in said hysteresis holding unit.

An image forming apparatus to which a replacing part containing a consumable including identifying means for storing therein identification data is loaded, and which has a reading-out unit for reading out the identification data from said replacing part,

• wherein said replacing part includes an identification data storing unit for outputting peculiar identification data in accordance with a reading-out request made from said reading-out unit, and a hysteresis holding unit for storing data of the number of sheets required for the image processing, and
• wherein said image forming apparatus comprises:
• an identification data storing unit for storing therein identification data of said replacing part;
• and
• a replacing part identification processing unit for when after the identification data and data of the number of sheets required for the image processing have been respectively read out from said identification data storing unit and said hysteresis holding unit, the read-out identification data matches the identification data stored in said identification data storing unit, permitting the use of said replacing part, counting the number of sheets required for the image processing with the read-out number of sheets required for the image processing as an initial value and storing the counted number of sheets required for the image processing in said hysteresis holding unit.