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    • 2. 发明授权
    • Tape cassette structure
    • 磁带盒结构
    • US5335875A
    • 1994-08-09
    • US988693
    • 1992-12-10
    • Masaru WatanabeTousaku Nishiyama
    • Masaru WatanabeTousaku Nishiyama
    • G11B23/087G11B15/04
    • G11B23/08714
    • A tape cassette for accommodating a magnetic recording tape comprises a casing including first and second major walls opposite to each other and spaced a distance corresponding to the width of a length of magnetic tape, a pair of opposite end walls, and front and rear walls opposite to each other, all assembled together to render the casing as a whole to represent a generally rectangular box-like configuration. Art erroneous erasure preventing member is accommodated within a detection hole, defined in the rear wall, for selective movement between retracted and projected positions in a direction substantially perpendicular to the rear wall. The erasure preventing member has an outer surface which, when in the projected position, closes the detection hole while lying flush with an outer surface of the rear wall, indicating the condition in which the magnetic tape contained in the tape cassette is available for information recording or erasure. On the other hand, when the erasure preventing member is moved to the retracted position with the outer surface thereof consequently set back inwardly from the rear wall, the tape cassette is held in the condition in which neither information recording nor information erasure can be accomplished on or from the length of magnetic tape contained therein.
    • 用于容纳磁记录带的磁带盒包括:壳体,包括彼此相对的第一和第二主壁,并且间隔开一定距离,该距离对应于一段长度的磁带的宽度,一对相对的端壁以及相对的前后壁 彼此组装在一起,使外壳整体呈现大致矩形的盒状结构。 艺术防擦除构件容纳在限定在后壁中的检测孔内,用于在基本上垂直于后壁的方向上在缩回和突出位置之间选择性地移动。 防擦除构件具有外表面,当外表面在投影位置时,与后壁的外表面齐平地闭合检测孔,指示包含在盒式磁带中的磁带可用于信息记录的状态 或擦除。 另一方面,当防擦除构件移动到缩回位置,其外表面因此从后壁向内退回时,盒式磁带被保持在既不能完成信息记录也不能完成信息擦除的状态 或从其中包含的磁带的长度。
    • 3. 发明授权
    • Tape casette with tape cleaners
    • 带式磁带清洁器
    • US5396392A
    • 1995-03-07
    • US56742
    • 1993-05-04
    • Masaru WatanabeTousaku NishiyamaTsumoru Ohata
    • Masaru WatanabeTousaku NishiyamaTsumoru Ohata
    • G11B23/087G11B23/50G11B23/02G11B5/41
    • G11B23/087G11B23/502Y10S15/13
    • A tape cassette for accommodating a reeled length of magnetic recording tape comprises a generally rectangular flattened box-like configuration. The cassette has top and bottom panels, front and rear wall and a pair of side walls. The front wall has a head access window and a pair of pinch roller access windows all defined therein. While a portion of the length of magnetic tape extends in the vicinity of and parallel to the front wall, tape cleaners are secured to front wall portions defined between the head access window and the pinch roller access windows so as to slidingly contact that portion of the length of magnetic recording tape as the latter is transported from one reel to the other reel. Each tape cleaner may be a fiber-intertwined cleaning member made of non-woven fabric or a fiber-tufted cleaning member made of crimped or curled fibers closely planted on a backing. With the fiber-intertwined cleaning members, that portion of the length of magnetic recording tape that is held in sliding contact with an intermediate portion of each fiber-intertwined cleaning member is rearwardly biased a predetermined bias distance within the range of 0.5 to 1 mm. With the fiber-tufted cleaning members, that portion of the length of magnetic recording tape that is held in sliding contact with an intermediate portion of each fiber-intertwined cleaning member is rearwardly biased a predetermined bias distance within the range of 0.1 to 1 mm.
    • 用于容纳卷绕长度的磁记录带的磁带盒包括大体矩形扁平的盒状结构。 盒式磁带具有顶板和底板,前壁和后壁以及一对侧壁。 前壁具有头部通道窗口和一个全部限定在其中的夹紧辊访问窗口。 虽然磁带长度的一部分在前壁附近延伸并且平行于前壁,但磁带清洁器固定在限定在磁头访问窗和压紧辊访问窗口之间的前壁部分上,以便滑动地接触 磁记录带的长度从后者从一个卷轴传送到另一卷轴。 每个胶带清洁器可以是由无纺布制成的纤维交织的清洁构件或由紧密地植在背衬上的卷曲或卷曲的纤维制成的纤维簇绒清洁构件。 利用纤维交织的清洁部件,保持与每根纤维交织的清洁部件的中间部分滑动接触的磁记录带的长度部分被向后偏置在0.5至1mm的范围内的预定偏置距离。 利用纤维簇绒清洁部件,保持与每个纤维交织的清洁部件的中间部分滑动接触的磁记录带的长度部分被向后偏置在0.1至1mm的范围内的预定偏置距离。