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High density magnetic image recording head
| Details |
Inventors: Nelson, Alfred M.;
Assignee: AM International, Inc. (Los Angeles, CA)
Primary Examiner: Lucas; Jay P.
Assistant Examiner:
Attorney, Agent or Firm: Hulse; Robert S.
A head for magnetizing a broad magnetic tape or the like to form magnetic images representing lines of high quality characters or other images, including a large number of closely-spaced recorder elements, such as two thousand spaced a few thousandths inches apart, the elements having parallel strip portions with recording locations therealong. The elements are arranged in groups, with the elements in one group having a common enlarged interconnected region on one side of the recording locations and with each element in the group having a separate enlarged terminal on the other side of the line of recording locations. The terminals are arranged in a staggered fashion, so that the elements located progressively closer to one end of the group have terminals located progressively further from the line of recording locations. The groups are arranged so that every other group has its common interconnect region on one side of an imaginary recording line while the groups in between have their common regions on the other side of the line. This arrangement provides large common areas and large terminals to which connections can be made, even though the strip portion of each element is very narrow. |
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DETAILED DESCRIPTION In accordance with one embodiment of the present invention, a high density magnetic image recording head is provided, which is compact, which can be constructed at low cost using printed circuit techniques, and which provides for relatively simple energization and connections.
The head includes a large number of recorder elements having closely spaced parallel strip portions, with each strip portion having a recording location therealong, and with the recording locations of all of the strip portions arranged substantially along an imaginary recording line.
The recording elements are divided into groups, with each group including a common interconnect region on one side of the recording line, where all of the elements of a group are connected together, and with each element of the group having a distinct terminal located on the other side of the recording line.
A series of cross-conductors are provided to interconnect elements of different groups at their terminal ends.
Thus, each recorder element has one end connected to a common interconnect region, and has an opposite end forming a terminal that is connected to elements of many other groups.
As a result, any particular recorder element can be energized by connecting one end of a source of electricity to the common interconnect region with which that element is associated, and connecting the other end of the source to the cross conductor with which that element is associated.
In one system designed to record up to 2,048 spots closely spaced across approximately an eight inch width of a magnetic tape, some groups of elements are arranged with their terminals on one side of the recording line while other groups of elements are arranged with their terminals on the other side of the recording line.
The strip portion of each recorder element is only about two mil wide, but the terminal of each element has a width many times greater than this.
The terminal portions are arranged in a staggered pattern, so that the entire arrangement of elements, including the common interconnect regions and the staggered and relatively wide terminals, can be accommodated in a head of moderate size
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Manufacturing Materials 
