Abstract: An electro-optical device is provided comprising an electro-optical material and means for applying an electric field to the electro-optical material, in which a plurality of pixel regions DR, DG and DB capable of separately controlling optical states of the electro-optical material are arranged and each pixel region is provided with a light transmitting portion (an aperture portion (212aR, 212aG, and 212aB)) and a light reflecting portion (a reflective surface (212R, 212G, and 212B)). At adjacent pixel regions that are arranged in a predetermined direction, end edges Ea and Eb of each of the light transmitting portions orthogonal to the predetermined arrangement direction are aligned with each other.

Abstract: A closing tape prevents winding looseness of a roll photo film and a light-tight sheet which are wound around a spool. After an adhesive agent layer formed on one end of the closing tape is adhered to a surface of the light-tight sheet, an adhesive agent layer formed on the other end of the closing tape is adhered to a surface of the closing tape. The adhesive agent layer consists of multiple adhesive dots. The respective dots are formed by heat sensitive adhesive agent filled in the respective cells of a gravure roll to coat on the closing tape by gravure coating. Adhesive force is stabilized due to uniformity in size and thickness of the dots. Moreover, the cells are provided at same intervals and heat sensitive adhesive agent having optimum viscosity is used, so that the adjacent dots are prevented from connecting each other.

Abstract: An electronic grand piano comprises a plurality of keys arranged on a keybed, a plurality of actions interlocked with the keys, and an electric circuit unit for performing tone-generation operations based on operations of the actions when the keys are operated. A pair of slide portions, each having an elongated shape, are arranged in parallel and are fixed to outer peripheries of the electric circuit unit. A pair of guide portions are arranged in parallel with respect to a main body of the piano and are loosely engaged with the slide portions. When the electric circuit unit is moved in a prescribed direction relative to the main body, it is automatically stopped and fixed at a prescribed position by means of a fixing structure.

Abstract: A grand piano generates acoustic tones through vibrations of strings and sound board so that the acoustic tones are converted to analog audio signals at recording points over the sound board, and a group of waveform data sets are produced from the analog audio signal through sampling and analog-to-digital conversion; when electronic tones are generated, delay parameters and volume parameters are determined on the basis of differences between the recording points and tone radiating points occupied by loud speakers, the sets of waveform data series are sequentially read out from the group of waveform data sets and are modified with the delay parameters and volume parameters so that the electronic tones become close to the acoustic tones.

Abstract: A grand piano generates acoustic tones through vibrations of strings and sound board so that the acoustic tones are converted to analog audio signals at recording points over the sound board, and a group of waveform data sets are produced from the analog audio signal through sampling and analog-to-digital conversion; when electronic tones are generated, delay parameters and volume parameters are determined on the basis of differences between the recording points and tone radiating points occupied by loud speakers, the sets of waveform data series are sequentially read out from the group of waveform data sets and are modified with the delay parameters and volume parameters so that the electronic tones become close to the acoustic tones.

Abstract: A grand piano generates acoustic tones through vibrations of strings and sound board so that the acoustic tones are converted to analog audio signals at recording points over the sound board, and a group of waveform data sets are produced from the analog audio signal through sampling and analog-to-digital conversion; when electronic tones are generated, delay parameters and volume parameters are determined on the basis of differences between the recording points and tone radiating points occupied by loud speakers, the sets of waveform data series are sequentially read out from the group of waveform data sets and are modified with the delay parameters and volume parameters so that the electronic tones become close to the acoustic tones.

Abstract: An electro-optical device is provided comprising an electro-optical material and means for applying an electric field to the electro-optical material, in which a plurality of pixel regions DR, DG and DB capable of separately controlling optical states of the electro-optical material are arranged and each pixel region is provided with a light transmitting portion (an aperture portion (212aR, 212aG, and 212aB)) and a light reflecting portion (a reflective surface (212R, 212G, and 212B)). At adjacent pixel regions that are arranged in a predetermined direction, end edges Ea and Eb of each of the light transmitting portions orthogonal to the predetermined arrangement direction are aligned with each other.

Abstract: A closing tape prevents winding looseness of a roll photo film and a light-tight sheet which are wound around a spool. After an adhesive agent layer formed on one end of the closing tape is adhered to a surface of the light-tight sheet, an adhesive agent layer formed on the other end of the closing tape is adhered to a surface of the closing tape. The adhesive agent layer consists of multiple adhesive dots. The respective dots are formed by heat sensitive adhesive agent filled in the respective cells of a gravure roll to coat on the closing tape by gravure coating. Adhesive force is stabilized due to uniformity in size and thickness of the dots. Moreover, the cells are provided at same intervals and heat sensitive adhesive agent having optimum viscosity is used, so that the adjacent dots are prevented from connecting each other.

Abstract: An electronic grand piano comprises a plurality of keys arranged on a keybed, a plurality of actions interlocked with the keys, and an electric circuit unit for performing tone-generation operations based on operations of the actions when the keys are operated. A pair of slide portions, each having an elongated shape, are arranged in parallel and are fixed to outer peripheries of the electric circuit unit. A pair of guide portions are arranged in parallel with respect to a main body of the piano and are loosely engaged with the slide portions. When the electric circuit unit is moved in a prescribed direction relative to the main body, it is automatically stopped and fixed at a prescribed position by means of a fixing structure.

Abstract: A grand piano generates acoustic tones through vibrations of strings and sound board so that the acoustic tones are converted to analog audio signals at recording points over the sound board, and a group of waveform data sets are produced from the analog audio signal through sampling and analog-to-digital conversion; when electronic tones are generated, delay parameters and volume parameters are determined on the basis of differences between the recording points and tone radiating points occupied by loud speakers, the sets of waveform data series are sequentially read out from the group of waveform data sets and are modified with the delay parameters and volume parameters so that the electronic tones become close to the acoustic tones.

Abstract: The invention relates to a photographic roll film such as Brownie film, particularly to a sealing tape, used for the photographic roll film, which can seal a roll of film easily and reliably without the need for licking adhesive on a sealing tape as in a conventional one. The sealing tape includes a bonding portion and a release portion which are made of a single tape base. The bonding portion has a bond layer coated on the tape base for securing the sealing tape to a surface of light-shielding paper, the release portion made of a folded-over portion formed by folding over the tape base includes a tacky layer and a release layer inside the folded-over portion which are coated on the tape base separately and directly face each other and an end of the tape base is secured to the end portion of the bond layer.

Abstract: A band-like matter fastening seal for fixing a wound end of a band-like matter that is wound in a roll form to the body of said band-like matter, includes: a first attaching part adhered to said end of the band-like matter; a second attaching part having an attaching side adhered to the body of the matter in order to fasten the end to the body of the matter; and a handle part extended from the second attaching part, the attaching side being exposed when the attaching side is lifted from a masking side covering the attaching side, wherein the handle part rises up along the tangent line of the roll when a portion of the band-like matter fastening seal in the vicinity of the handle part is curved.

Abstract: A composite keyboard musical instrument includes an acoustic grand piano, an electronic sound generating system and a silent system, and an electric motor, a hammer stopper, a link work and a controller form in combination the silent system, wherein rigid arms and rigid rods are assembled into the link work so as to promptly transmit the force from the actuator to the hammer stopper without substantial time lug.

Abstract: A keyboard musical instrument that is equipped with an electric tutor for guiding a trainee in practicing manipulation of black and white piano keys, whereby the electric tutor reads pieces of musical data information representative of the black and white keys to be depressed and a timing to depress each of the black or white keys for guiding the trainee in the fingering. More specifically, while the trainee is practicing a piece of music, the electric tutor automatically sinks the designated black or white keys as an advanced notice to the trainee so that the trainee can prepare to depress the keys at the appropriate timing, and whereby the electric tutor sinks the same keys again for an inductive action at the time when such keys are to be appropriately depressed.

Abstract: A composite keyboard musical instrument includes an acoustic grand piano, an electronic sound generating system and a silent system, and an electric motor, a hammer stopper, a link work and a controller form in combination the silent system, wherein rigid arms and rigid rods are assembled into the link work so as to promptly transmit the force from the actuator to the hammer stopper without substantial time lug.

Abstract: The invention relates to a photographic roll film such as Brownie film, particularly to a sealing tape, used for the photographic roll film, which can seal a roll of film easily and reliably without the need for licking adhesive on a sealing tape as in a conventional one. The sealing tape includes a bonding portion and a release portion which are made of a single tape base. The bonding portion has a bond layer coated on the tape base for securing the sealing tape to a surface of light-shielding paper, the release portion made of a folded-over portion formed by folding over the tape base includes a tacky layer and a release layer inside the folded-over portion which are coated on the tape base separately and directly face each other and an end of the tape base is secured to the end portion of the bond layer.

Abstract: An instant photo film pack includes a pack case for containing a stack of ten self-processing photo film units. An outlet slit is formed in the pack case, for exiting an exposed one of the photo film units therethrough. A light-shielding flap has a substantially quadrilateral shape, for closing the outlet slit in a light-tight manner. The light-shielding flap has first, second and third predetermined adhering regions, at least which are coated with adhesive agent and attached to the pack case. The light-shielding flap has first and second longer side lines and first and second shorter side lines. The first adhering region has a linear shape and extends along the first longer side line. The second and third adhering regions have a dot shape, and are disposed respectively at the first and second shorter side lines. The outlet slit is disposed between the second and third adhering regions.

Abstract: In manufacturing a photo film cassette, a disk producing apparatus includes a web supplier which conveys the web from a web roll to the web conveyor. The web conveyor includes two chains which convey the web in an intermittent fashion, and which include pointed portions which serially penetrate an edge portion of the web. A heater disposed upstream from the web conveyor heats the edges of the web. At the heating/forming unit, a heating plate is lowered toward the web at the same time as the female mold is raised toward the web, and the web is squeezed between them before the heating and vacuum/air pressure forming takes. Clampers/coolers disposed upstream and downstream from the heating plate and female mold squeeze the web in fixed fashion to prevent wrinkles on the web. A web/sheet cutter device includes an upper punch above the web and a lower die under the web, which squeeze the web, and cut the web into a sheet having a plurality of disk-like portions.

Abstract: In order to give piano-like key touch to a player in an electronically sound producing mode, a keyboard incorporated in a musical instrument is linked with key action mechanisms associated with hammer mechanisms, and a stopper blocks the hammer shanks before the hammers strike the strings so that noises are not mixed with synthesized tones.

Abstract: A keyboard musical instrument is fabricated on the basis of an acoustic piano, and a hammer stopper and solenoid-operated actuators are provided for hammer assemblies and black and white keys; and a controller instructs the solenoid-operated actuators to move the black and white key at different velocities depending upon the position of the hammer stopper, and causes the acoustic piano to give little offense to the ear at a blocking position of the hammer stopper.