Processing box for imaging device

Abstract

A process cartridge detachably inserted into a main body of an image forming apparatus, the process cartridge having at least one constituent element performing an image forming process and a nonvolatile memory (20: 20Y, 20M, 20C, and 20K). In a non-volatile memory, data with the same content is stored in multiple storage units spaced apart from each other, and the number of storage units depends on the type of data. For a plurality of memory cells for the same data content, an address shift amount between one memory cell and another memory cell is set according to the data type.

Description

technical field [0001] The present invention relates to a process cartridge detachably inserted into an image forming apparatus main body, and having executable image forming process components and a nonvolatile memory storing given information associated with an address. Background technique [0002] In recent years, a process cartridge detachably inserted into an image forming apparatus main body has come into general use with the main purpose of recovering natural resources. In addition to the components necessary to complete the known electrophotographic process, including a photosensitive drum, a charging unit, an exposing unit, a developing unit, a cleaner, and a toner storage, some of these process cartridges also have non-volatile The memory stores information on the respective process cartridges. [0003] FIG. 6 of Japanese Patent Application Laid-Open No. 2000-19929 shows a memory map of an EEPROM (Electrically Erasable Programmable Read Only Memory) which is a no...

AI Technical Summary

Problems solved by technology

[0004] However, the aforementioned constant amount of address shifting brings about an unhelpful increase in address usage, resulting in memory inefficiency

It is inconvenient for the processing box because it is difficult to fit a large memory on it, and considering the cost

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