Method for monitoring prescribed use periods of replaceable part

Details Method for monitoring prescribed use periods of replaceable part Method for monitoring prescribed use periods of replaceable part

1996-05-29

1998-02-10

Grimley, Arthur T.

Electrophotography

Diagnostics

Consumable

399 43, G03G 1500, G03G 2100

Patent

active

057179743

ABSTRACT:
A method for monitoring prescribed use periods of replaceable parts within an image forming apparatus, contemplates the steps of: updating in a memory, current count values respectively corresponding to the replaceable parts in response to each printed sheet generated by the apparatus, each one of the current count values representing an amount of use sustained by a corresponding one of the replaceable parts; sequentially comparing the current count values with corresponding predetermined count values representative of the prescribed use periods to determine whether any one of the prescribed use periods has expired; and providing output of a printed document indicating that one of the prescribed use periods has expired when one of the current count values equals a corresponding one of the predetermined count values.

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