Patent ID: 8107828
Filing Date: 2012-01-31
Classification: G03G

Abstract:
1. An image forming apparatus, comprising: consumable units detachably mounted in the image forming apparatus; first nonvolatile memories, each of the first nonvolatile memories being disposed in a respective one of the consumable units for memorizing various information including identification information of the respective consumable unit; an information reader which reads information memorized in the first nonvolatile memories when the consumable units are attached to the image forming apparatus; a second nonvolatile memory connected to the first nonvolatile memories via a same bus for memorizing the information read by the information reader; and an attachment judging part which executes an attachment judging control for judging whether the same consumable unit as that before a print mode is set in an unprintable state, is attached to the image forming apparatus, when a recovering operation having a possibility of replacing the consumable unit is performed after the print mode is set in the unprintable state, the attachment judging part transmitting to the bus a signal based on the information of the respective consumable unit memorized in the second nonvolatile memory, and judging that the same consumable unit as that before the print mode is set in the unprintable state is attached to the image forming apparatus, when there is a reply thereto regarding a part of the information in the first nonvolatile memory; wherein in the attachment judging control, the part of the information read from the first nonvolatile memory by the information reader is the information for image adjustment required when image adjustment control is performed; and further comprising an image adjustment part that executes image adjustment control, wherein the image adjustment part executes image adjustment control, based on the information for image adjustment read by the information reader when the attachment judging control is performed after the recovering operation, and the information reader reads the remaining information excluding the information read before the image adjustment control is executed after the recovering operation is performed, out of the information memorized in the first nonvolatile memory, during executing the image adjustment control, after the recovering operation.