Stationary tape guide with spring arrangement and ceramic guide portion mating with plastic mounting portion
View Patent ↗A tape drive is provided having a pair of stationary guide assemblies disposed symmetrically about the magnetic read/write head. Each of the stationary guide assemblies has a mounting portion and a separate guide surface portion mounted on the mounting portion. The mounting portion may be made of a plastic and the guide surface portion of a ceramic, for example. A spring arrangement with pressure pads is mounted directly on the mounting portion, and applies pressure to a top edge of a tape during guiding of the tape.
1. A stationary tape guide for a tape drive, comprising:
a mounting portion made of a first material;
a guide surface portion made of a second material different from the first material and mounted to the mounting portion, the guide surface portion including a tape guide surface; and
a spring arrangement mounted directly on the mounting portion to apply pressure to a to edge of the tape during guiding of the tape;
wherein the first material is a molded plastics and includes integral mounting elements that mate with mounting elements of the spring arrangement and mounting elements of the guide surface portion to respectively mount the spring arrangement and the guide surface portion;
wherein the spring arrangement includes first and second spring beams, each spring beam having a pad finger mounted on an undersurface thereof, and a connecting notch between the first and second spring beams to connect the first and second spring beams to provide a synchronous mode of biasing by the pad fingers against the tape; and
wherein the spring arrangement further includes a third beam parallel to and connected to the first and second spring beams at the ends of the first and second spring beams; and damping disks mounted on an upper surface at the ends of the first and second spring beams.
2. The tape guide of claim 1 , wherein the mounting portion includes an inclined seat from which the integral mounting elements extend, and the spring arrangement includes a plate section with apertures therein, forming part of the third beam, the plate section resting on the inclined seat and the integral mounting elements extending through the apertures when the mounting portion and the spring arrangement are in an assembled position.
3. The tape guide of claim 2 , wherein the second material is a ceramic.
4. The tape guide of claim 3 , wherein the first and second spring beams have a spring rate of between 25–150 g/in.