Image forming apparatus
November 3, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesProtecting device in self-diagnosis Copier start button with diagnostic information Image forming apparatus with a display device for matching the image size with the copying sheet size Developer detecting device Guidance device for manipulation of machine Copying machine display control device Sheet transport control method for copier and others Patent #: 4804998 InventorsAssigneeApplicationNo. 266848 filed on 11/03/1988US Classes:399/10, Log report399/23, Copy medium supply399/27TonerExaminersPrimary: Grimley, A. T.Assistant: Hoffman, Sandra L. Attorney, Agent or FirmForeign Patent References
International ClassG03G 021/00Foreign Application Priority Data1987-11-05 JPAbstractAn image forming apparatus equipped with a sensor for detecting the requirement of replenishment and exchange of expendable supplies, parts and the like and an image forming structure capable of forming on the same sheet of paper a prewarning image in addition to a regular image formed corresponding to an original or image information to be copied.The image forming structure receives different control depending on whether or not the sensor is detecting the requirement of replenishment and exchange, wherein if the sensor is not detecting the requirement, it forms only a regular image while when the sensor detects the requirement, it forms a prewarning image together with a regular image thereby indicating the requirement of replenishment and exchange by the prewarning image on the same sheet on which a regular image is formed. | |
