Vacuum Puffer Head to Prevent Tape Stick on Magnetic Head
Original Publication Date: 1988-May-01
Included in the Prior Art Database: 2005-Feb-15
A tape drive is described that operates without positive pressure. Negative pressure is required for three functions. The first use of negative pressure is at the cleaner blade to vacuum debris off of the tape. The second use of vacuum is in guiding tape over a magnetic head when the magnetic head is embedded inside of the cleaner blade, as shown in the figure. The third use of vacuum is to wrap the tape against the magnetic head during a read/write operation, as shown in the figure. When the tape is slowing down or motionless, vacuum to the cleaner blade is removed. Then the tape tension is sufficient to pull the tape away from the head and prevent tape stick from occurring. Once the tape starts moving for another read/write operation, vacuum is again turned on.