SU723659A1

SU723659A1 - Magnetic erasing head

Info

Publication number: SU723659A1
Application number: SU782653010A
Authority: SU
Inventors: Геннадий Петрович Колесов; Роман Романович Арнольд; Светлана Александровна Ефремова
Original assignee: Всесоюзный Научно-Исследовательский Кинофотоинститут
Priority date: 1978-07-31
Filing date: 1978-07-31
Publication date: 1980-03-25

Description

Изобретение относится к приборостроению, а именно к стирающей магнитной головке (СМГ), используемой в аппарате служебной магнитной записи.The invention relates to instrumentation, and in particular to an erasing magnetic head (SMG) used in a service magnetic recording apparatus.

Известна стирающая магнитная головка, выполненная с общим магнитопроводом (МП) и с двумя рабочими зазорами (РЗ), имеющая обмотку и помещенная в корпус [1 ].Known washing magnetic head, made with a common magnetic circuit (MP) and with two working gaps (RE), having a winding and placed in the housing [1].

При использовании такой СМГ в аппаратуре, работающей на перфорированной магнитной ленте (МЛ), оказывается затруднительным стирать именно перфорированные участки, что сужает функциональное назначение головки.When using such an SMG in equipment operating on a perforated magnetic tape (ML), it is difficult to wash just the perforated areas, which narrows the functional purpose of the head.

Наиболее близкой к предлагаемой является СМГ, содержащая МП, состоящий из полусердечников, между полюсными наконечниками которых сформирован РЗ, обмотку, расположенную на полусердечниках, и корпус (2].Closest to the proposed is SMG, containing MP, consisting of half-cores, between the pole tips of which a RE is formed, a winding located on the half-cords, and a housing (2].

Однако и эта СМГ, несмотря на то, что она предназначена для работы с перфорированной МЛ, недостаточно надежно стирает сигналы на перфорированных участках МЛ.However, this SMG, despite the fact that it is designed to work with perforated ML, does not erase the signals in the perforated sections of the ML reliably.

Цель изобретения — повышение надежности стирания сигналов на перфорированных участках МЛ.The purpose of the invention is to increase the reliability of erasing signals on the perforated sections of the ML.

Эта цель достигается тем, что в СМГ введены два дополнительных МП, установленных по краям основного МП, и обмотки, расположенные на дополнительных МП, при этом ширина РЗ в этих МП превышает ширину РЗ основного МП, а высота последнего в плоскости, перпендикулярной РЗ, превышает высоту дополнительного МП.This goal is achieved by the fact that two additional MFs are installed in the SMG, installed along the edges of the main MF, and windings located on additional MFs, while the width of the RE in these MPs exceeds the width of the RE of the main MP, and the height of the latter in a plane perpendicular to the RE exceeds the height of the additional MP.

На фиг. 1 показана стирающая магнитная головка, вид спереди; на фиг. 2 - то же, вид сверху; на фиг. 3 — то же, вид сбоку; на фиг. 4 - разрез А-А фиг.1; на фиг. 5 - дополнительный магнитопровод и на фиг. 6 — общий вид стирающей магнитной головки.In FIG. 1 shows a magnetic erase head, front view; in FIG. 2 - the same, top view; in FIG. 3 - the same side view; in FIG. 4 is a section AA of FIG. 1; in FIG. 5 - an additional magnetic circuit and in FIG. 6 is a general view of an erasing magnetic head.

МЛ 1, имеющая перфорацию 2, движется мимо основного МП 3, имеющего РЗ 4. По бокам от основного МП установлены дополнительные МП 5, имеющие РЗ 6 и рабочую поверхность 7, которая ниже по уровню рабочей поверхности 8 основного МП. После сборки СМГ она устанавливается в корпус 9 и заливается ком3 паунпом 10. Каждый из Mil имеет свою обмотку: основной МП - обмотку 11, дополнительный -- обмотку 12.ML 1 having a perforation 2, moves past the main MP 3 having a RE 4. Additional MP 5, having a RE 6 and a working surface 7, which is lower in level of the working surface 8 of the main MP, are installed on the sides of the main MP. After the assembly of the SMG, it is installed in the housing 9 and filled with a compressor 3. Each Mil has its own winding: the main MP - winding 11, the additional - winding 12.

В процессе работы такой СМГ в ее обмотки подаются разные токи стирания, что связано с разными условиями работы центральных и перфорированных участков МЛ 1. В остальном СМГ работает так же, как работают традиционные головки этого назначения.During the operation of such an SMG, different erasure currents are supplied to its windings, which is associated with different working conditions of the central and perforated sections of ML 1. Otherwise, the SMG works in the same way as traditional heads of this purpose.

Повышение надежности стирания перфорированных участков МГ позволяет уменьшить зашумленность сигналограмм, что повышает качество воспроизводимой информации.Improving the reliability of erasing the perforated sections of the MG can reduce the noise level of the signalograms, which improves the quality of the reproduced information.

Claims

The invention relates to instrumentation, namely, to an erasable magnetic head (SMG) used in the office magnetic recording apparatus. A known erasing magnetic head, made with a common magnetic core (MP) and with two working clearances (RE), having a winding and placed in the housing 1. When using this SMG in the appliance, working on a perforated magnetic tape (ML), it turns out to be difficult army is precisely perforated areas, which narrows the functionality of the head. The closest to the proposed is the SMG containing MP, consisting of half-cores, between the pole tips of which RH is formed, the winding located on the half-cores, and housing 2. However, this SMG, despite the fact that it is designed to work with perforated ML, not reliably erases the signals on the perforated areas of the ML. The invention is an increase in the reliability of erasing signals on perforated areas of the ML. This goal is achieved by the fact that two additional MPs installed along the edges of the main MP and windings located on additional MPs are introduced in SMG, with the width of the RE in these MPs greater than the width of the RE of the main MP, and the height of the latter in the plane perpendicular to the RP , exceeds the height of the additional MP. FIG. 1 shows an erasable magnetic head, front view; in fig. 2 - the same, top view; in fig. 3 - the same, side view; in fig. 4 - section aa of FIG. in fig. 5 is an additional magnetic circuit and in FIG. 6 is a general view of an erasable magnetic head. ML 1, having perforation 2, moves past the main MP 3, having RZ 4. On each side of the main MP, additional MP 5 are installed, having РЗ 6 and a working surface 7, which is lower in the level of the working surface 8 of the main MP. After assembling the SMG, it is installed in the housing 9 and filled with a comm 10. Each of the MP has its own winding: the main MP is the I winding, and the additional winding is 12. During the operation of this SMG, different erasing currents are fed into its windings, which is associated with conditions of operation of the central and perforated sections of the ML 1. For the rest, the SMG works in the same way as the traditional heads of this designation. Improving the reliability of erasing perforated y yacTKOB MG reduces the noise level of the waveforms, which improves the quality of reproduced information. Claims of the invention The erasing magnetic head containing the magnetic core consisting of half-cores between the pole tips of which a working gap is formed, a winding 44 located on the half-cores and Cyrius about the length. Due to the increased reliability of erasing signals on the perforated sections of the magnetic tape, two additional magnetic conductors installed along the edges of the main magnetic conductor and windings located on additional magnetic conductors are introduced into it, and the working gap in these magnetic conductors exceeds the working width the clearance of the main magnet, and the height of the latter in the plane perpendicular to the working gap, exceeds the height of the additional magnetic circuit. Sources of information taken into account in the examination 1. US patent number 3449529, cl. 179-100.2, 1969.

2..Avtorskoe certificate of the USSR № 471604, cl. G 11 B 5/28, 1972 (prototype).