Back to results
US 4,264,221 AGranted
Print element cartridge
AssigneeInternational Business Machines Corporation
InventorsAdolph B. Habich, Ronald E. Hunt
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeInternational Business Machines Corporation
InventorsAdolph B. Habich, Ronald E. Hunt
Estimating the term…
A cartridge for housing a daisy wheel print element during printing use and non-use. The cartridge has a front, sides, and a back, and is structured to substantially enclose the print element. Included in the makeup of the cartridge are (1) a slot in the top of the front for accommodating a print hammer during printing operations, (2) an orientation opening generally centralized within the front to accept a matching orientation protrusion carried by the print element, (3) a loading opening in the bottom for insertion and removal of the print element, (4) a card holder carried by the top of the back, (5) a ribbon guide carried by the top of the front, and (6) a center bowed leaf spring located within the cartridge. The lower end of the spring acts against the lower inside of the back and the bow acts against the inside of the front adjacent the orientation opening. As such, a ramp is provided for caming the orientation protrusion toward the orientation opening during insertion of the print element into the cartridge. Upon engagement of the orientation opening and orientation protrusion, the spring then serves to maintain the print element latched in a desired rotational position.
A cartridge for a daisy wheel printer print element having a central hub carrying an orientation protrusion thereon, said cartridge comprising in combination;
In a cartridge for a daisy wheel print element having an orientation protrusion engulfing the axis of rotation of said print element, said cartridge having a front, a back, sides, and an open bottom, wherein the improvement comprises:
In a cartridge for housing a print element which is rotatable within said cartridge for printing and which includes orientation means, wherein the improvement comprises an orientation opening (1) engageable with said orientation means, and (2) shaped such that when said orientation opening and said orientation means are in engagement, said print element will be latched in one rotational position against rotation until unlatched upon disengagement of said orientation means and said orientation opening for rotation within said cartridge during printing.
A cartridge for a print element which is rotatable within said cartridge during printing and which includes orientation means, said cartridge comprising in combination:
Dependencies are inferred from the claim text.