Patent ID: 6647214
Filing Date: 2003-11-11
Classification: G03G

Abstract:
An image forming apparatus, to which an attachment device as a functional member in image forming is removably attachable, the attachment device having memory means for storing identification information and data transmitted from said image forming apparatus, said image forming apparatus comprising:an open-close member to be opened and closed for attaching and detaching the attachment device: a detection means for detecting opening and closing of said open-close member; and a control means for controlling data transmission to the memory means, wherein said control means halts data transmission to the memory means when opening of said open-close member is detected during data transmission to the memory means on the basis of the detection results of said detection means, and wherein when closing of said open-close member is detected by said detecting means after a halt of the data transmission due to the opening of said open-close member, said control means restarts the data transmission halted due to the opening of said open-close member provided that identification information stored in the memory means of the attachment device attached to said image forming apparatus is identical with identification information stored in the memory means of the attachment device before the halt of the data transmission.