Image forming apparatus, and a cartridge having a developer container detachably mountable on such apparatus
First Claim
1. An image forming apparatus for forming images on a recording material, comprising:
- a cartridge detachably mountable on a main body of said apparatus, said cartridge being provided with a developer container;
means for detecting a residual developer amount in said developer container; and
memory means for storing rewritable data;
access means for writing data for a consumed developer amount in said memory means after the detected residual amount of said residual amount detection means arrives at a first given value; and
display means for indicating absence of the developer when the data for the consumed developer amount in said memory means arrives at a second given value.
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Accused Products
Abstract
An image forming apparatus for forming image on a recording material includes a cartridge detachably mountable on the main body of the apparatus, which is provided with a developer container, a detector for detecting residual developer amounts in the developer container, and a memory for storing rewritable data, an access unit for accessing data on the memory, which writes data on consumed developer amounts to the memory after a detected residual amount of the residual amount detection detector arrives at a given value, and a display for indicating the absence of developer when data on consumed developer amounts arrives at a given value in the memory.
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Citations
17 Claims
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1. An image forming apparatus for forming images on a recording material, comprising:
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a cartridge detachably mountable on a main body of said apparatus, said cartridge being provided with a developer container;
means for detecting a residual developer amount in said developer container; and
memory means for storing rewritable data;access means for writing data for a consumed developer amount in said memory means after the detected residual amount of said residual amount detection means arrives at a first given value; and display means for indicating absence of the developer when the data for the consumed developer amount in said memory means arrives at a second given value. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A cartridge detachably mountable on an image forming apparatus, comprising:
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a developer container; means for detecting a residual developer amount in said container; and memory means for storing a consumed developer amount data after a residual developer amount arrives at a given value. - View Dependent Claims (9, 10, 11, 12, 13)
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14. The image forming apparatus for forming images on a recording material, comprising:
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a cartridge detachably mountable on a main body of said apparatus, said cartridge being provided with a developer container, and a memory for storing rewritable data; a comparing circuit for comparing data of a residual amount of a developer obtained from said cartridge and a first predetermined data; writing means for writing a data relating to a consumed developer amount in said memory after the data of the residual amount reaches the first predetermined data. - View Dependent Claims (15, 16, 17)
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Specification