CRUM unit mountable and dismountable in consumable unit of image forming apparatus and image forming apparatus using the same
AssigneeS-Printing Solution Co., Ltd.
InventorYoun-jae Kim
Life of this patent
Estimating the term…
Abstract
A CRUM unit which is mountable/dismountable on an image forming apparatus is disclosed. The CRUM unit includes a power extracting circuit to, when a clock signal is received from an image forming apparatus, extract power from a high value of the clock signal and store in a capacitive element and a controller to operate using the extracted power, wherein the clock signal has a first pulse width in a data section where a data signal is received and transmitted, and has a second pulse width which is different from the first pulse width in an pause section where a data signal is not received.
Claims17
A Customer Replaceable Unit Monitor (CRUM) unit comprising:
- a power extracting circuit to, when a clock signal generated for an image forming apparatus and having a high value and a low value is received, extract power from the high value of the clock signal;
- and
- a controller to operate using the extracted power,
- wherein the clock signal is to have
- the high value and the low value repeatedly alternating in a first frequency while in a data section, and
- the high value and the low value repeatedly alternating in a second frequency that is different from the first frequency while in a pause section, and
- wherein the controller is to cause a data signal to be transmitted when the clock signal having the high value and the low value repeatedly alternates in the first frequency.
Dependencies are inferred from the claim text.