Abstract: In an ink jet cartridge the platform structure is formed in part by an extension of the bottom of the housing and a forward platform surface intersecting the extension and extending generally perpendicularly thereto. A discharge plate is formed on the platform surface. The discharge plate has one or more rows of ink discharge ports in fluid communication with the ink reservoir. A ink propulsion element is arranged on each of the ink discharge ports. A carrier strip is mounted on the housing. The strip has a forward portion mounted over the platform surface, a rearward portion mounted over the bottom of the housing, and a central portion extending over the intersection of the housing top and the platform surface. A plurality of electrodes are formed on the rearward portion of the carrier strip in an electrode pattern. A plurality of electrically conductive paths are formed on the carrier strip.

Abstract: An improved ribbon cartridge has an endless printing ribbon and a ribbon inlet and outlet through which a portion of the printing ribbon is fed outside the cartridge for use by a printing device in a printing operation. The ribbon cartridge includes a self adjusting, low torque ribbon drive system, and more particularly, a gear system having a drive gear and one or more idler gears arranged in intermeshing engagement. Each of the gears has a compound curvilinear tooth configuration including one or more ribbon engagement ribs. At least one of the gears may be slideably mounted in the ribbon cartridge for positioning relative to an adjacent intermeshing gear in response to tension on the ribbon.

Abstract: An ink ribbon cassette includes a top, a bottom, sides disposed between the top and bottom, a ribbon chamber disposed between the top and bottom, a ribbon outlet extending from the chamber, a ribbon inlet extending into the chamber, and a positionable tab disposed on the cartridge for actuating a power switch on a device in which the cartridge may be mounted.

Abstract: An ink ribbon cassette includes a top, a bottom, sides disposed between the top and bottom, a ribbon chamber disposed between the top and bottom, a ribbon outlet extending from the chamber, a ribbon inlet extending into the chamber, and a positionable tab disposed on the cartridge for actuating a power switch on a device in which the cartridge may be mounted.

Abstract: An ink ribbon cassette includes a top, a bottom, sides disposed between the top and bottom, a ribbon chamber disposed between the top and bottom, a ribbon outlet extending from the chamber, a ribbon inlet extending into the chamber, and a positionable tab disposed on the cartridge for actuating a power switch on a device in which the cartridge may be mounted.