Abstract:
The recording medium cartridge of the invention can keep superiority in supplying a power source and realize a high capacity of an IC chip and an improvement of communications performance, with a cartridge memory being able to be flexibly arranged in a cartridge case. The cartridge has a cartridge memory and the memory is separately composed so that the IC chip is electrically connected with an antenna

Description:
FIELD OF THE INVENTION  
         [0001]    The present invention relates to a recording medium cartridge with a cartridge memory.  
         BACKGROUND OF THE INVENTION  
         [0002]    As described in page 2 and FIGS. 7 and 8 of Japan patent laid open publication 2001-332064, a recording medium cartridge provided with a recording medium such as a magnetic tape is equipped with a cartridge memory to memorize manufacture information such as a manufacturer and manufacture number and usage history information such as a user and usage date.  
           [0003]    As shown in FIG. 1A, such the cartridge memory is housed in a Cartridge case  110  of a recording medium cartridge. As shown in FIG. 1B, the cartridge memory  100  housed in the cartridge case  110  is formed with a loop antenna  100   b  and IC chip  100   c  being provided on a board  100   a  of a rectangular sheet made of resin, The IC chip  100   c  is protected by being sealed in a globe top  100   d  which is a sealant made of resin.  
           [0004]    In such the cartridge memory  100 , the IC chip  100   c  is electrically connected with the loop antenna  100   b  which is print-wired on the board  100   a  and data is sent/received to and from an outside of a magnetic tape cartridge with no contact by propagating electromagnetic waves to the loop antenna  100   b  from an electromagnetic wave sending means provided in recording/reproducing apparatus. Moreover, a power source to drive the IC chip  100   c  is also supplied by propagating the electromagnetic waves from the electromagnetic wave sending means provided in the recording/reproducing apparatus.  
           [0005]    However, in a magnetic tape cartridge as shown in FIGS. 1A and 1B, the cartridge memory  100  is arranged at a corner in the cartridge case  110  not to impede a travel of a magnetic tape MT. Therefore, a size of the board  100   a  must be made so that it can be housed at a corner of the cartridge case  110 , and a size of the loop antenna  100   b  provided on the board  100   a  is also limited by the size of the board  100   a . If the size of the loop antenna  100   b  is limited, a driving power source for an IC chip supplied from an external recording/reproducing apparatus is also restricted, thereby a realization of high capacity of an IC chip becoming difficult.  
         SUMMARY OF THE INVENTION  
         [0006]    The object of the present invention is to provide a recording medium cartridge which can realize a high capacity of an IC chip and an improvement of communications performance without a size and position of a loop antenna being limited.  
           [0007]    The recording medic cartridge related to the invention is characterized in that the cartridge is composed of a cartridge case, recording medium housed in the cartridge cue, and cartridge memory at least part of which is housed in the cartridge case, wherein the cartridge memory is separately composed so that the IC chip is electrical connected with the antenna.  
           [0008]    The recording medium cartridge related to the invention enables arrangement places of the IC chip and antenna in the cartridge memory to be flexible by separately composing the IC chip and antenna in the cartridge case. Moreover, the antenna can be enlarged according to some arrangement places, so a high capacity of a memory configuration can be realized by enlarging a power supply source. Furthermore, comparing the cartridge with a conventional one in which an arrangement position of electromagnetic wave sending means of a recording/reproducing apparatus is limited, a flexibility of designing the recording/reproducing apparatus is increased. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0009]    [0009]FIG. 1A is a perspective view showing a situation in which a conventional cartridge memory is attached to a cartridge case and FIG. 1B is a perspective view showing an appearance of the conventional cartridge memory.  
         [0010]    [0010]FIG. 2 is an exploded perspective view showing a configuration of a magnetic tape cartridge related to the embodiment.  
         [0011]    [0011]FIG. 3 is a perspective view showing a situation in which a cartridge memory is attached to a cartridge case related to a first embodiment of the invention.  
         [0012]    [0012]FIG. 4 is a perspective view showing a situation in which a cartridge memory is attached to a cartridge case related to a second embodiment of the invention. 
     
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0013]    The embodiments related to the invention are described in detail hereinafter referring to drawings as needed. Meanwhile, the embodiments assume cases in which the invention is applied to a magnetic tape cartridge.  
         [0014]    a. First Embodiment  
         [0015]    Firstly, a first embodiment of a magnetic tape cartridge related to the invention is described referring to FIGS. 2 and 3.  
         [0016]    As shown in FIG. 2, a magnetic tape cartridge MC is composed of a single reel  2  in which a magnetic tape MT which is a recording medium is wound, a leader pin  10  to pull out the magnetic tape MT from a ridge case  1 , a lock plate  3  and compressing spring  4  to lock a rotation of the reel  2 , a release pad  5  to unlock the reel  2 , a slide door  6  to open/close a magnetic tape pulling-out port  1 C formed over a lower half  1 A and upper half  1 B, a coiled spring  7  energizing the slide door  6  to a closing position of the magnetic tape pulling-out port  1 C, a prevention claw  8  for an involuntary delete, a cartridge memory  9 , and the like built in the cartridge case  1  which is divided into the lower half  1 A and upper half  1 B.  
         [0017]    As shown in FIG. 3, the cartridge memory  9  is composed so that a loop antenna  9   b  is electrically connected with an IC chip  9  by a wiring  9   e . In the cartridge memory  9 , manufacture information of a magnetic medium cartridge  1  such as a manufacturer and manufacture number, usage history information of the cartridge  1  such as a user and usage date, and the like are recorded.  
         [0018]    The loop antenna  9   b  electrically connected with the IC chip  9   c  has functions of supplying a power source and communicating data to the chip  9   c.    
         [0019]    The antenna  9   b  is formed by being printed on an outer surface of the upper half  1 B of the cartridge case  1 . For forming the antenna  9   b , a method such as printing it on the cartridge case  1  made of synthetic resin with a conducting ink and hardening the ink (conducting paste) is used. Here, as main compositions of the conducting paste, thermosetting resins using such as a phenol resin, epoxy resin, and melamine resin, thermoplastic resins using such as an acrylic resin, butyral resin, and polyester resin, or mixed ones of these resins and organic solvents are utilized. In this connection, it is convenient to connect the antenna  9   b  with the IC chip  9   c  if the antenna  9   b  is arranged at a position at which the antenna  9   b  and chip  9   c  housed in the cartridge case  1  mutually correspond to each other at an inside and outside of the case  1 .  
         [0020]    Meanwhile, the chip  9   c  is protected by being sealed in a globe top  9   d  which is a sealant made of resin.  
         [0021]    The chip  9   c  is electrically connected with the antenna  9   b  formed of the conducting paste on an outer surface of the cartridge case  1  by the wiring  9   e . The chip  9   c  sends/receives data to and from an outside of the magnetic tape cartridge MC by propagating electromagnetic waves to the antenna  9   b  from the outside of the tape cartridge MC. Moreover, the power source to drive the chip  9   c  is also supplied by propagating the electromagnetic waves from the outside of the tape cartridge MC.  
         [0022]    Meanwhile, the IC chip  9   c  is arranged at a corner of the lower half  1 A of the cartridge case  1  not to impede a travel of the magnetic tape MT (see FIG. 3).  
         [0023]    According to the above mentioned content, the first embodiment can obtain the following effects.  
         [0024]    Because in the cartridge memory  9  the IC chip  9   c  and loop antenna  9   b  are separately composed and the antenna  9   b  is printed on the cartridge case  1 , an IC chip can be arranged at a space at which a conventional cartridge memory arranging these on one board cannot arrange the chip. Thus, an arrangement place of the chip in the cadge case  1  can be made flexible.  
         [0025]    Moreover, because the antenna  9   b  is printed on the cartridge case  1 , it is unnecessary to consider its arrangement space. Therefore, a winding number of the antenna  9   b  can be increased and the antenna itself can be largely formed, so a high capacity of a memory configuration can be realized by enlarging a power supply source.  
         [0026]    Furthermore, the antenna  9   b  is printed on the outer surface of the cartridge case  1 , thereby printing work being able to be facilitated. Therefore, an assembling process of the recording medium cartridge can be simplified and productivity is also excellent. In addition, electromagnetic waves are propagated on the outer surface of the cartridge case  1 , so the antenna  9   b  can be arranged without regard for directions of the electromagnetic waves  
         [0027]    b. Second Embodiment  
         [0028]    Then, a variation example of the invention is described. Meanwhile, in the description below, same parts of description of the first embodiment are omitted in detailed description by adding the same symbols.  
         [0029]    As shown in FIG. 4, a cartridge memory  9 A is composed so that the loop antenna  9   b  and IC chip  9   c  are electrically connected by the wiring  9   e , and is attached to the magnetic tape cartridge MC.  
         [0030]    The antenna  9   b  is formed by being printed with a conducting paste on a board  9   f  made of synthetic resin. The conducting paste is made according to the same method described before.  
         [0031]    The antenna  9   b  is arranged at a corner of the lower half  1 A of the cartridge case  1  so as to be convenient to propagate electromagnetic waves.  
         [0032]    The chip  9   c  is protected on the board  9   a  made of resin by being sealed in the globe top  9   d  which is a sealant made of resin.  
         [0033]    The chip  9   c  is electrically connected with the antenna  9   b  formed of the conducting paste on the outer surface of the cartridge case  1  by the wiring  9   e  and is arranged at a corner different from that at which the antenna  9   b  is arranged.  
         [0034]    Meanwhile, the chip  9   c  and antenna  9   b  thus arranged does not impede a travel of the magnetic tape MT.  
         [0035]    According to the above mentioned content, the second embodiment can obtain the following effects.  
         [0036]    Because in the cartridge memory  9 A the IC chip  9   c  and loop antenna  9   b  are separately composed, each can be separately arranged at a space at which a conventional cartridge memory arranging these on one board cannot arrange these. Thus, arrangement places of an IC chip and antenna in the cartridge case  1  can be made flexible. In addition, the memory  9 A can also be composed of a plurality of the antennas  9   b  or chips  9   c.    
         [0037]    Moreover, because each of the antenna  9   b  and chip  9   c  is separately composed, each size can be formed smaller than that of a conventional cartridge memory. Therefore, the antenna  9   b  or chip  9   c  itself can be enlarged matching a housing space, so a memory configuration with a high capacity can be realized by enlarging a power supply source and the like.  
         [0038]    The embodiments of the invention are described as above, but the invention is not limited to such the embodiments and is available for various variations as far as embodiments are based on the technical ideas of the invention.  
         [0039]    Although the embodiments are composed so that the loop antenna  9   b  is printed on the outer surface of the upper half  1 B of the cartridge case  1 , the invention is not limited to this and, for example, the effects of the invention can be obtained even in the case of it being printed on an outer surface of the lower half  1 A. In this connection, in the case of it being printed on the outer surface of the lower half  1 A, it is preferable to overcoat a loop antenna to be protected.  
         [0040]    Moreover, to print the loop antenna is not limited to the outer surface of the cartridge case  1  and any of the inner surface or inner/outer side surface is acceptable. Thus, with an arrangement being flexible, a position which is most convenient for a propagation of electromagnetic waves can be selected.  
         [0041]    Not to mention that a shape, size, and arrangement of an IC chip and loop antenna is changeable as needed, anything can obtain similar effect unless a movement of a magnetic tape inside the magnetic cartridge tape MT is impeded.  
         [0042]    Although cases are assumed in the embodiments that a magnetic tape is applied as a recording medium, an optical recording tape is also applicable not limited to a magnetic tape. Moreover, not limited to a tape, a disk is also applicable as the recording medium.