Patent ID: 6271928
Filing Date: 2001-08-07
Classification: B41J

Abstract:
A replaceable printing component for an ink-jet printing system having at least one replaceable printing component, the replaceable printing component including an electrical storage device responsive to printing system control signals for transferring information between the replaceable printing component and the ink-jet printing system, the replaceable printing component comprising:a non-protected electrical storage portion responsive to write control signals for storing information provided to the non-protected electrical storage portion; anda protected electrical storage portion having a protected state in response to an occurrence of a write protect active signal and a non-protected state, wherein the protected electrical storage portion in the non-protected state is responsive to write control signals for storing information provided to the protected electrical storage portion, and wherein the protected electrical storage portion in the protected state preventing storage of information in the protected electrical storage portion, wherein the protected and non-protected electrical storage portions are responsive to read control signals for transferring information stored in the protected and non-protected electrical storage portions, respectively, to the ink-jet printing system, and wherein the non-protected electrical storage portion has a corresponding non-protected storage size associated therewith and the protected electrical storage portion has a corresponding protected storage size associated therewith and wherein the replaceable printing component contains information specifying each of the non-protected storage size and the protected storage size.