Lexmark International, Inc.

David Craig Stevenson

George Keith Parish

Lucas David Barkley

Christopher Alan Adkins

Adam Jude Ahne

Barry Baxter Stout

Randall David Mayo

Mark Joseph Edwards

John Glenn Edelen

Kristi Maggard Rowe

Douglas Laurence Robertson

John Douglas Anderson

Stephen Andrew Budelsky

Krisit M Rowe

A method and device for providing a plurality of fire pulses in an ink jet printer, which includes a production of a plurality of fire signals. Each fire signal of the plurality of fire signals are asserted at a different timing than the other of the plurality of fire signals. The plurality of fire signals are combined to form a composite fire signal that maintains the different timing.

Composite printhead fire signals

A method for providing a virtual replenishing of a supply item with an imaging substance includes the steps communicating to a database a first serial number associated with a first supply item; comparing the first serial number with a plurality of serial numbers stored in the database; receiving from the database one of a first data indicating non-correspondence between the first serial number with one of the plurality of serial numbers and a second data indicating correspondence between the first serial number with one of the plurality of serial numbers, wherein the second data includes a verification key; and if the verification key corresponds to the first key stored in the memory associated with the first supply item, then performing the step of allocating at least a portion of a surplus amount of the imaging substance contained in the first supply item for use.

Method for providing imaging substance for use in an imaging device via a virtual replenishment

A micro-miniature fluid ejecting device. The fluid ejecting device includes a semiconductor substrate having fluid ejectors formed on a surface of the substrate. A flexible circuit is fixedly attached to the semiconductor substrate. The flexible circuit has power contacts for providing power to the fluid ejectors. At least one drive circuit is connected to the fluid ejectors. The drive circuit is disposed on one of the semiconductor substrate and the flexible circuit. A fluid sequencer is connected to the drive circuit for selectively activating the fluid ejectors. The fluid sequencer is also disposed on one of the semiconductor substrate and the flexible circuit. The semiconductor substrate is attached to a housing. A fluid source is provided for supplying fluid to the semiconductor substrate for ejection by the fluid ejectors. The fluid ejecting device provides low cost construction for application specific miniature fluid jetting devices.

Micro-miniature fluid jetting device

A programmable memory on an inkjet printhead chip. The memory includes at least a memory array that has a plurality of memory elements, and a bipolar device that isolates a memory element from another memory element in the memory array.

Fuse density on an inkjet printhead chip

Growing community of inventors

Lexington, KY, United States of America

David Craig Stevenson