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D-2 digital VTR for a new drum and heads


Will have high-speed rotating drum within the flow of air inhaled on the surface (2) the outflow of air through the windows and on the drum head with the gap under the drum to ask discharged by centrifugal force from Figure 9 that the initial head to head external contacts within the film. In theory, the resulting contact force is stable. Film will be a constant when the tape through the drum. However,[link widoczny dla zalogowanych], within the initial contact is usually the head of film thick,[link widoczny dla zalogowanych], and head through the tape, the index fell a result, big changes in contact pressure. Film shown in Figure 9A area of type 1 caused by the film model. B, shows patterns of film caused by type 2. Figure 8, the air flow around the drum and the air shed of a 66 - Figure 9 to conventional film in terms of l-type model, the design of the drum on the drum surface in a number of slots. These slots are used to capture the air drums E pathway. Therefore, thin film thickness of the reservoir. Figure 1O that tracks film thickness and flatness error and the slot cross section curve. Optical method for measuring film. In this case,[link widoczny dla zalogowanych], when the trough of the cross-sectional area increases, the film thinning, but the magnetic track straightness error larger. This shows that when the tank cross-sectional area increases, it is difficult to run the tape along the straights. Slot with the tape because it is very large compared to the thickness of the tape shown in Figure 10 recessed slot, and increased the force to push the tape. Therefore, the magnetic track straightness error larger. Thinning of the film another method. Found in Figure 10 tracks of film thickness and flatness error and the relationship between groove cross spider tank and E light curve of the drum surface roughness of the surface of a moderate combination of changes in surface roughness, the straightness error of the magnetic track also played on film thinning is effective. When the drum with a moderate is a constant. Cape surface roughness greater than 1 when the surface roughness is given when the drum was captured on film the air flow and magnetic track flatness good condition. Many small drum surface every slot. Tape can not be recessed for the type 2 film mode, designed a new type of magnetic tank, because the slot size is much smaller figure than the thickness of the tape drum to reduce the flow of air into the drum, it is given by n the film thickness and flatness error of tracks under the table to do all the drum exhaust port to achieve the objectives within the flow of air between the surface roughness of the curve. In this case, even when the, as shown in Figure 8. Because the incision made from the head - 67 - windows and the upper and lower drums in the air gap between the flow reduced. Head around the film could easily be the head bulge loop II gas flatness pancreas and sweet wine violation points,[link widoczny dla zalogowanych], window heads, and tensioning the situation changed. Because D-2 tape is a low toughness, the head of a protruding part of the increase in stability of the tape near the edge of the contact point is reduced. When the head is too large bulge. Near the edge of the tape to tape the slack. So. Select the amount of 55um for the head stuck. Central tape tensioning specifications set by the window shape of the head, and the design of a specific head shape of the window, as shown in Figure 12b. Heads with the new windows. Tape head can be wound through the window than in the general curve of the tape wound more, and the contact pressure also increased. Under the conditions found in some tension. Tape and head in a stable contact with respect. Improved head heads better than ordinary windows window. Figure l3 said that the records in the 32MHz signal,[link widoczny dla zalogowanych], tensioning, and the relationship between the coefficient of the envelope. Improved cross head windows have a greater range of dynamic tension. Figure l4 drum that gained new envelope, which guarantees the stability of the head with the tape contact. Figure l2 official head of a 68 - IV, Conclusion Figure 14 with the new drum the envelope for the D-2 digital VTR's new drum system has been developed. Performance has been recorded for the change stumble, SAF has developed a multi-head. Have determined the stability of high-speed rotation of tapes under the contact, but also by a wider range of error ratios. References [13sMPrE \rComposi ~ DistalVCRpresentedatthe130mPrETechnicalConference1988l3lMSaimet. at. \ More articles related to topics：


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