EP0532308A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Replaceable sub-assemblies for electrostatographic reproducing machines
Assignee: Xerox Corp
•
Filing: 1992-09-10
•
Granted: —
•
Expires: 2012-09-10
Abstract
Abstract In an electrostatographic printing/copying machine, the developer device for developing electrostatographic latent images with toner is located in a replaceable sub-assembly, or cassette. The sub-assembly is provided with a programmable memory which is connected with the machine when the sub-assembly is inserted therein. The memory receives and stores an input from the machine representing the usage of the sub-assembly. The memory indicates that usage to the machine and at least one operating parameter of the machine is adjusted accordingly. <IMAGE>
Inventors
- 👤 Eric John Le Sueur
- 👤 Shelley May Taylor
- 👤 Krzysztof Jerzy Less
- 👤 Robin Ashley Collins
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 22:55
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/16; G03G21/18; G03G21/1875; G03G21/1878; G03G21/1889; G03G2215/00; G03G2215/00025; G03G2215/00029; G03G2215/00033; G03G2215/00037; G03G2215/00042; G03G2221/00; G03G2221/16; G03G2221/1606; G03G2221/1615; G03G2221/1663; G03G2221/18; G03G2221/1823; G03G2221/183; G03G2221/1838
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
90 words
A replaceable sub-assembly (1) for an electrostatographic reproducing machine, the sub-assembly including a developer device (22) for developing, with toner, a latent image on a circulating imaging member (20) and being provided with a programmable memory (30) arranged to be connected with the machine when the sub-assembly is inserted therein and thereby to receive and store an input from the machine representing the usage of the sub-assembly, the memory indicating said usage to the machine to adjust at least one operating parameter of the machine in dependence on that usage.
Claim 2
Dependent Claim
44 words
A sub-assembly as claimed in claim 1, in which the memory is arranged to receive an input representing the number of images developed while the sub-assembly is inserted in a machine, or the image area on which toner is deposited by the developer device.
Claim 3
Dependent Claim
43 words
A sub-assembly as claimed in claim 1 or claim 2, in which an operating parameter that is adjusted is the relationship between toner development by the developer device and operation of a toner dispensing means (42) which dispenses toner to the developer device.
Claim 4
Dependent Claim
126 words
An electrostatographic reproducing machine comprising a circulating imaging member (20), means (2) for generating a latent image on the imaging member; a developer device (22) for developing the latent image with toner, and means (42) for dispensing toner to the developer device from a toner supply, wherein the developer device forms part of a sub-assembly (1) which can be removed from, and replaced in, the machine, the sub-assembly being provided with a programmable memory (30) which is connected with the machine when the sub-assembly is inserted therein, thereby to receive and store an input from the machine representing the usage of the sub-assembly, the memory indicating said usage to the machine to adjust at least one operating parameter of the machine in dependence on that usage.
Claim 5
Dependent Claim
44 words
A machine as claimed in claim 4, in which the memory is arranged to receive an input representing the number of images developed while the sub-assembly is inserted in a machine, or the image area on which toner is deposited by the developer device.
Claim 6
Dependent Claim
51 words
A machine as claimed in claim 4 or claim 5, in which the toner dispensing means is operable in dependence on toner development by the developer device, and in which an operating parameter that is adjusted is the relationship between the said toner development and operation of the toner dispensing means.
Claim 7
Dependent Claim
44 words
A machine as claimed in any one of claims 4 to 6, in which an operating parameter that is adjusted is the charge level on the imaging member, the exposure level to the image generating means and/or the electrical bias in the developer device.
Claim 8
Dependent Claim
30 words
A machine as claimed in any one of claims 4 to 7, in which the memory is updated whenever a predetermined number of prints has been made by the machine.
Claim 9
Dependent Claim
35 words
A machine as claimed in any one of claims 4 to 8, in which the said at least one operating parameter is adjusted when the memory indicates a predetermined level of usage of the cassette.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.