Sony Corporation

Toru Morikawa

Kazuhito Kurita

Takahiro Yamada

Mikinori Matsuda

Noboru Koyama

Mitsuo Yanase

Tokio Kanada

Takashi Ohgi

Kei Sato

Izumi Kariya

Kazunori Onuma

Takashi Izuka

A thermal head which forms an image on a recording medium by pressing a protruding portion on which heating elements are arranged on the recording medium while driving the heating elements to be heated includes a head body portion in which the protruding portion and a concave gap portion facing the protruding portion are formed and a heat conductive layer provided on the side of the protruding portion of the head body portion, in which the heat conductive layer includes an electric insulating layer securing electric insulation to the heating elements and a heat diffusion layer diffusing heat generated from the heating elements.

Thermal head and thermal printer

A thermal head which forms an image on a recording medium by pressing a protruding portion on which heating elements are arranged on the recording medium while driving the heating elements to be heated includes a support substrate in which a concave gap portion facing the protruding portion is formed and a glaze layer provided on the support substrate and in which the protruding portion is formed, in which the glaze layer has a base layer stacked on the support substrate as well as forming a ceiling surface of the gap portion and a heat resistant layer stacked on the base layer and on which the heating elements are arranged.

Thermal head, thermal printer and manufacturing method of thermal head

A thermal head includes a glass layer having a protruding section formed on one surface and a concave groove section formed on the other surface facing the protruding section, a heat generation resistor provided on the protruding section, and a pair of electrodes provided to both sides of the heat generation resistor, and a part of the heat generation resistor exposed between the pair of electrodes is defined as a heat generation section, the protruding section has a smaller curvature radius in both sides than a curvature radius in a central portion, and a width of the groove section is one of equal to and larger than a length of the heat generation section.

Thermal head and printing device

Disclosed herein is a disk cartridge including a disk; a cartridge body in which the disk is rotatably accommodated, the cartridge body having a recording and/or reproducing window for exposing a part of the disk; a shutter mounted on the cartridge body so as to be movable between a closed position where the window is closed by the shutter and an open position where the window is opened by sliding the shutter; a shutter locking member adapted to engage a locking portion of the cartridge body when the shutter is in the closed position, thereby limiting the movement of the shutter in the direction of opening the window; a biasing member provided on the shutter for biasing the shutter locking member in the direction of engaging the shutter locking member with the locking portion of the cartridge body; and a deformation preventing member provided in the cartridge body at a position inside of the biasing member for preventing the deformation of the biasing member inward of the cartridge body.

Disk cartridge with shutter locking member

A recording and/or reproduction apparatus includes a chassis, a recording and/or reproduction device provided on the chassis so as to perform recording and/or reproduction on a disk cartridge, a cartridge holder for holding the disk cartridge, the cartridge holder being supported to be movable between a disk cartridge insertion/draw-out position and a recording/reproduction position relative to the chassis, an eject lever provided to be movable in the direction for insertion and draw-out of the disk cartridge relative to the chassis, a biasing device for biasing the eject lever in a disk cartridge discharging direction, a shutter unlocking member mounted to one side surface of the cartridge holder, and a shutter unlocking member movement restriction portion provided on the chassis and operable to restrict the shutter lock unlocking member from moving in the direction of spacing away from the one side surface when the cartridge holder is located in the recording/reproduction position.

Disk recording and/or reproduction apparatus

A disk cartridge is provided which includes an optical disk (), a cartridge body () having formed therein a head opening () through which a part of the optical disk () is exposed to outside in a range between the inner and outer radii thereof, a shutter member () supported movably on the cartridge body () to uncover and cover the head opening (), and a two-way forcing mechanism () to force the shutter member () toward any selected one of positions to cover and uncover the head opening (). The two-way forcing mechanism () forces the shutter member () toward any selected one of the positions to cover and uncover the head opening () correspondingly to a position of the shutter member () relative to the head opening ().

Disk cartridge

The present invention provides lock release means that allows spring constant of the lock release means to be set to any desired value without regard to a material used for a cartridge holder. A disk recording and/or reproducing apparatus includes: recording and/or reproducing means disposed in a chassis; a cartridge holder supported on the chassis movably between an insertion and withdrawal position, at which a disk cartridge is inserted or removed, and a recording and reproducing position, at which the disk cartridge is recorded or reproduced by the recording and/or reproducing means; an eject lever disposed on an upper surface of the chassis so as to be movable in a disk cartridge insertion and withdrawal direction; eject lever lock means disposed on the upper surface of the chassis; and lock release means mounted on the cartridge holder such that a leading end side of the lock release means advances into the cartridge holder from an upper surface of the cartridge holder.

Chassis and cartridge holder with ejection mechanism for ejecting a cartridge from a disk apparatus

A disk recording/reproducing apparatus includes a chassis rotatably supporting a holder for storing a disk cartridge; an eject lever movably disposed in the chassis in an insertion/removal direction of the disk cartridge and movably in a direction toward or away from the chassis. The eject lever is rotated by being pushed by the disk cartridgeinserted into the holder. A cartridge drop preventive mechanism prevents the disk cartridge ejected by the eject lever from dropping from the cartridge holder. The cartridge drop preventive mechanism is formed from a flat spring disposed on one side surface of the holder and makes a sliding contact with one side surface of the disk cartridge during unloading of the cartridge so as to give the disk cartridge a braking force. This arrangement can prevent the disk cartridge from jumping out and dropping off from the cartridge holder during ejection.

Disk recording/reproducing apparatus with cartridge drop preventing mechanism having elastic flap portion

A disc cartridge includes a cartridge body unit having an optical disc () rotatably housed in it and provided with a recording and/or reproducing aperture () for exposing a part of the disc to outside, and a shutter member () slidably carried by the cartridge body member (). A shutter opening/closing member () provided to a disc drive device () slides on the shutter member. The shutter member also includes an engagement opening () engaged by the shutter opening/closing member. The shutter member operates for opening/closing the recording and/or reproducing aperture. The shutter member includes a collision buffering part () for absorbing the shock of collision against the shutter opening/closing member.

Disc cartridge

A drive unit includes a drive shaft at an end of a vibrating element that expands and contracts in the predetermined axial direction by application of a predetermined voltage, wherein a movable member is moved by differentiating the speed of expansion and contraction in the predetermined axial direction, a fixing member is fixed to one end of the vibrating element and the other end is fixed to the drive shaft, and a damping member fixes the fixing member to the drive unit while damping vibrations are provided.

Drive unit

A head feeding mechanism used for an apparatus for recording and/or reading information signals on/from such a recording medium as an optical disk comprises a head mechanism, a feed screw, a rotation driving mechanism, a base, and a forcing mechanism. The feed screw is engaged with the head mechanism and rotated to feed the head mechanism. The rotation driving mechanism drives the feed screw to rotate. On the base is arranged the rotation driving mechanism. The base includes a pair of bearings used for the feed screw. At least one of the pair of bearings is a thrust bearing. The forcing mechanism is provided on the base and butts against one end of the feed screw. The forcing mechanism applies a force working on the feed screw both in the thrust direction and in the direction orthogonal to the thrust direction.

Growing community of inventors

Kanagawa, Japan

Toru Morikawa