摘要:
A blade is pressed against a developing roller for regulating the amount of toner which is deposited on a surface of the developing roller. The blade is formed with a slant face at its tip end, to which the toner is transported along a direction of rotation of the developing roller. An angle of aperture .theta. at a toner inlet portion defined by the developing roller and the slant face is set at 12.5.degree. or more, the angle of aperture counting in an angle .psi. of the slant face, elastic deformation and radius (R) of the developing roller, and an angle .alpha. related to a nip width w on which the blade contacts with the developing roller. Such an angle of aperture .theta. provides a great allowance for a free length l of the blade, thereby permitting the blade to maintain a constant toner mass for forming a uniform toner layer.
摘要:
An elastic member for pressing is provided in a prescribed location in an area where the developer carrier comes in contact with the discharging member, in order to bring the discharging member into contact with the developer carrier so that mechanical peeling of the residual developer on the developer carrier is not caused, and the discharging member is provided with a bias power supply for setting bias in a direction imparting to the discharging member a force for electrically drawing the residual developer on the developer carrier away from the developer carrier, and after thus reducing the electric adhesion of the residual developer to the developer carrier, the developer feed member removes the residual developer on the developer carrier in the vicinity of disjunction area or in the contact area of the developer carrier and the developer feed member, thereafter applies new developer in a developer container to the developer carrier in the vicinity of approaching area or in the contact-starting area of the developer carrier and the developer feed member.
摘要:
There is provided a monoazo compound which is useful as a reactive dye for dyeing or printing a fiber material in an orange to scarlet color; and intermediate compounds for producing the compound is provided; the monoazo compound being represented by the following formula (1): ##STR1## wherein m represents 0 or 1; R.sup.1 represents a hydrogen atom or a lower alkyl group; D represents a specific diazo component of benzene type having substitution of a fiber reactive group; B.sup.1 represents a direct bond or connecting group; Z.sup.1 represents an alkylcarbonyl group, phenylcarbonyl group or a fiber-reactive group of vinylsulfone, triazine or pirimidine type; a group represented by --NR.sup.1 -- bonds to 6-position or 7-position of a naphthalene ring;and the intermediate compounds being represented by the following formulae (A) or (B): ##STR2## wherein U represents a connecting group such as alkylene and the like, Y represents vinyl or --CH.sub.2 CH.sub.2 L, and L represents a group eliminatable by an action of alkali.
摘要:
A PLL circuit includes a PLLic formed into an integrated circuit; a loop filter for receiving an output signal from the PLLic; a voltage-controlled oscillator having an oscillation frequency which is controlled according to an output signal of the loop filter for applying a controlled oscillation output signal to the PLLic, the voltage-controlled oscillator including a resonator and a negative resistor circuit; wherein a buffer amplifier functioning as a part of the voltage-controlled oscillator is incorporated into the PLLic, and the resonator and the negative resistor circuit of the voltage-controlled oscillator are disposed outside of the PLLic.
摘要:
A satellite broadcast receiver capable of receiving audio SCPC signals is disclosed in which the receiver comprises an RF reception unit for receiving television signals and audio SCPC signals broadcast from a satellite, frequency converter for converting an RF output from said RF reception unit into an IF signal, separator for separating the output of said frequency converter into a television signal and an audio SCPC signal, a TV signal processing unit for receiving and processing a first output from the separator, an SCPC signal processing unit for receiving and processing a second output from the separator, and a selector for selecting any one of the outputs from the TV signal processing unit and said SCPC signal processing unit, thereby enabling selective reception of TV signals and audio SCPC signals broadcast from a satellite. The RF reception unit comprises an RF amplifier, and the frequency converter comprises a feedback circuit for selectively feeding the first and the second outputs of the separator back to the RF amplifier, thereby controlling a gain of the RF amplifier. The TV signal processing unit includes a video detector for receiving and detecting a television signal from the separator, an audio circuit for receiving an audio signal from the video detector, and a video circuit for receiving a video signal from the video detector. The selector comprises a switch for selecting any one of the outputs of the SCPC signal processing unit and the audio circuit.
摘要:
A bisazo compound of the following formula: ##STR1## wherein R.sup.1 and R.sup.3 are each hydrogen or alkyl; D is phenylene or naphthylene; one of X.sup.1 and X.sup.2 is NH.sub.2 and the other is OH; Z.sup.1 and Z.sup.2 are each --CH.dbd.CH.sub.2 or --CH.dbd.CH.sub.2 Z' in which Z' is a splittable group; B is monosulfophenylene, monosulfophenylene-methylene or mono- or di-sulfonaphthylene-methylene; U is phenylene or an aliphatic bridging group; and J is an amono-derivative group or, J may be alkoxy when X.sup.1 is OH and U is phenylene, and J may be alkoxy or phenoxy when X.sup.1 is OH and U is the aliphatic bridging group. This compound is useful for dyeing or printing fiber materials and gives a dyed or printed product having a color superior in various fastness properties with superior build-up property.
摘要:
A floating type composite magnetic head includes a head core fixed to a slider formed of nonmagnetic material. In the head core, a pair of magnetic core halves are abutted against each other with nonmagnetic material such as SiO.sub.2 or the like interposed therebetween. The first and second magnetic core half members have first and second gap forming surfaces to be abutted against each other to define a magnetic gap (g), respectively. A first groove is formed on the second gap forming surface. A glass layer is formed in the first groove. A first thin film including a ferromagnetic metal thin film is selectively formed on the first gap forming surface. A second thin film including a ferromagnetic metal thin film is selectively formed on the second gap forming surface so that at least a portion except the surface of the glass layer in the second gap forming surface is exposed. A second groove is formed on the exposed second gap forming surface adjacent to the first groove. The first and second magnetic core half members are abutted and bonded with glass so that the first and second gap forming surfaces face each other so that the first and second thin films are abutted with SiO.sub.2 or the like interposed therebetween to define a magnetic gap (g). Causes of occurrence and an increase of false gaps are suppressed and a decrease in manufacturing yield due to separation of thin films or the like can be prevented.
摘要:
A tape loading apparatus comprising a cassette including a videotape received in the cassette, with a longitudinal axis of the received tape forming a tape datum plane in the cassette. A helical scanning type magnetic head drum is provided having a cylindrical head drum surface and a lead edge, with the tape being set on the cylindrical head drum surface for scanning. The lead edge maintains the lead angle between the tape and the magnetic head drum and limits the vertical movement of tape on the cylindrical head drum surface. A tape-drum contacting axis is a contacting line at which the longitudinal axis of the tape set along the lead edge contacts with the cylindrical head drum surface after the tape setting operation on the cylindrical head drum surface is completed with both of the longitudinal ends of the tape-drum contacting axis being arranged substantially on a plane parallel to the tape datum plane. A tape setting device draws out the tape from the cassette, guides the tape along the lead edge and sets the tape on the cylindrical head drum surface for scanning the tape, so that damage to the tape is prevented.
摘要:
A powder container is for use with an image forming apparatus, and the image forming apparatus includes a driving protrusion that is rotatable and that protrudes toward an upstream side in an insertion direction in which the powder container is inserted. The powder container includes a container body to store powder, a cap attached to the container body, and a transmitted structure provided on the cap to contact the driving protrusion. The transmitted structure extends outward from an outer circumference of the powder container. The cap is rotatable relative to the container body in a predetermined angular range. The rotation of the cap relative to the container body is restricted so that the container body rotates along with the rotation of the cap when the rotation of the cap exceeds the predetermined angular range.
摘要:
A powder container is insertable in an image forming apparatus, and includes a main-body interlocking portion that is rotatable and protrudes toward an upstream side in an insertion direction in which the powder container is inserted, the image forming apparatus including an identifier protrusion that protrudes toward the upstream side in the insertion direction to identify a type of the powder container. The powder container includes a container interlocking portion configured to interlock with the main-body interlocking portion; and an interlocked portion configured to interlock with the identifier protrusion. The interlocked portion is provided in a front end of the powder container in the insertion direction. The container interlocking portion stands outward from an outer circumference of the powder container. The container interlocking portion and the interlocked portion are rotated integrally.