Abstract: In an image forming apparatus, a rotary developing device has a rotary developing unit or revolver facing a photoconductive element. The revolver rotatably supported by a pair of pivotable arms which are constantly biased toward the photoconductive element. When the revolver is rotated to bring one of developing sections thereof to a developing position, a developing roller built in the developing section is accurately positioned relative to the photoconductive element.

Abstract: An electrically erasable and programmable read only memory device enters an automatic erasing mode of operation, and repeats short erasing operation followed by confirmation of proper erased state in the automatic erasing mode, wherein the memory cell array is inspected to see whether or not each memory cell not only enters the erased state but also remains in enhancement mode so that the memory cell array is exactly programmed in a programming mode of operation.

Abstract: In a semiconductor device having "N" input terminals, a high voltage for a mode switching is applied to a first input terminal, and mode setting information is supplied to the other input terminals. A latch circuit holds the mode setting information supplied during a predetermined period of time starting from application of the high voltage to the first input terminal, during a period of time in which the high voltage continues to be supplied to the first input terminal. Thus, a test is performed on the basis of the mode switching instruction held in the latch circuit and data applied to the other input terminals. On the other hand, if the high voltage is disconnected, the latch circuit is reset.

Abstract: Disclosed herein is a flash type EEPROM which includes a first memory cell array having a plurality of first memory cells, a second memory array having a plurality of memory cells which are smaller in number than the first memory cells, a voltage generator operatively generating an erasing voltage in an erase operation mode, a first transfer gate circuit operatively transferring the erasing voltage to each of the first and a second transfer gate circuit operatively transferring the erasing voltage to each of the second memory cells, the first transfer gate circuit having a current driving capability larger than the current driving capability of the second transfer gate circuit.

Abstract: An image forming apparatus has an optical device for image magnification change. The apparatus is provided with a fixed platen on which a document is placed, four reflecting mirrors and an exposure lamp by which the document is exposed and scanned, and a lens unit including a fixed-focus lens by which an image of the document is formed on an image carrier. An imagewise light emitted from a document is reflected by the first, second and third reflecting mirrors and is transmitted through the fixed-focus lens. The reflected light is projected into the image carrier by way of the fourth reflecting mirror at which the light transmitted by the fixed-focus lens is reflected. The lens unit accommodates the fixed-focus lens and is movable in the same moving direction as the first, second and third reflecting mirrors at the time of an image magnification change operation. A lens cam member is mounted on the lens unit.

Abstract: An optical pulse tester capable of displaying Raman scattered light is disclosed. An optical pulse with the specified wavelength is injected into an optical fiber to be measured via a directional coupler and an optical demultiplexer/multiplexer. The demultiplexer/multiplexer demultiplexes returning light from the optical fiber into Raman scattered light different from the optical pulse in wavelength. The directional coupler divides returning light from the optical fiber into Fresnel reflection light and Rayleigh scattered light with the specified wavelength. The switcher supplies the Rayleigh scattered light to a display In the case of long distance measurement or precise loss measurement of the optical fiber. Therefore, the display displays the characteristic waveform of the optical fiber with the Rayleigh scattered light.

Abstract: A topical composition for treating acne vulgaris comprising 1-pentadecanol as an active ingredient and a carrier or diluent acceptable for topical composition is disclosed. The composition is highly effective on Propionibacterium acnes and of high safety.

Abstract: Described is a fragrancing composition having fragrancing components that are not activated until, e.g., application to the skin of a human. The composition is alkaline or (if anhydrous) capable of producing an alkaline pH when in contact with water, prior to application, and includes (1) a vehicle for application of the composition, and (2) at least one potential fragrance that is at least one compound having little or no odor in the alkaline composition but which, e.g., is hydrolyzed in a lower pH environment to produce compounds having a relatively strong aroma. Upon application of the alkaline composition to the skin surface, the strong buffering capacity of the skin (the surface of which has a normal pH of 5.5-7.0) neutralizes alkalinity of the composition (lowers pH) so as to restore normal skin surface pH; the potential fragrance is then hydrolyzed at the lower pH to release the compound having relatively strong aroma.

Abstract: A cleaning device has a plurality of cleaning blades capable of coming into contact with an image carrier; a rotatable supporting shaft on which the blades are affixed; and a blade replacement mechanism that rotates the supporting shaft and thereby replaces the blade that is in contact with the image carrier with another blade by rotating the supporting shaft. The blade replacement mechanism includes a supporting shaft mover for moving a blade between a position in which the blade comes into pressure contact with the image carrier and a position in which the blade separated from the image carrier; a moving controller connected with the supporting shaft mover; and a rotator for rotating the blade supporting shaft when the blade takes a position in which the blade separates from the image carrier.

Abstract: A topical composition for treating or preventing acne vulgaris which comprises at least one saturated or unsaturated chain alcohol having 18 carbon atoms represented by formula (1): ##STR1## wherein a dotted line represents either the presence or the absence of a double bond as an active ingredient, makes it possible to inhibit proliferation of Propionibacterium acnes, which causes acne vulgaris, or kill the bacterium to effectively treat or prevent acne vulgaris. The compound represented by formula (1) can be easily synthesized and has an extremely low toxicity. Furthermore, it exerts an excellent antibacterial effect on Propionibacterium acnes even when used at a relatively low concentration. Thus it can be used only in a small amount , which ensures a high safety.

Abstract: A semiconductor memory device uses a memory cell array having of a plurality of cell array blocks, a redundancy cell array as a replacement for a cell array block containing a faulty memory cell, a replacement-information memory circuit for holding faulty-cell detection information and discrimination information of a cell array block containing a faulty cell in a plurality of memory transistors each, in normal mode, with source and control gate electrodes kept at ground potential and a drain electrode kept at a specified voltage of lower potential than the supply voltage. Each is forced into depletion or enhancement mode depending on the accumulated charge on the floating gate. The memory also includes a redundancy selector for outputting the redundancy signal which goes to active level by the decision based on an information held in this replacement-information memory circuit that a cell array block containing a faulty cell has been selected.

Abstract: A data logging apparatus for a device function tester comprises a first shift circuit (1) supplied with an output signal of the tester and a strobe signal for shifting the output of the tester by n rates under the timing of a basic clock (T.sub.0), a second shift circuit (2) for shifting the timing of the basic clock (T.sub.0) by n rates, a write pulse generating circuit (3) supplied with the output signal of the shift circuit (2), a third shift circuit (4) supplied with a memory address signal for shifting it by n rates under the timing of the basic clock (T.sub.0), a fourth shift circuit (5) for shifting a pattern address signal by n rates under the timing of the basic clock (T.sub.

Abstract: When an electrically erasable and program read only memory device enters an erasing mode of operation, electrons are evacuated from floating gate electrodes of the floating gate type field effect transistors serving as memory cells, and the evacuation is continued over a time period instructed from an internal memory circuit so that the memory cells are prevented from depletion mode due to excess evacuation as well as from non-erased state due to insufficient evacuation.

Abstract: An exhaust gas recirculation system for an automotive internal combustion engine includes an exhaust gas recirculation control valve disposed in an exhaust gas recirculation passage connecting intake air and exhaust gas passageways of the engine. The exhaust gas recirculation control valve is controllably operated in response to a signal vacuum or intake vacuum downstream of a throttle valve. The signal vacuum is regulated in response to an engine operating condition by a vacuum control valve. The vacuum control valve has a diaphragm-operated valve member for closing and opening an atmospheric air introduction port through which atmospheric air is introduced to modify or dilute the signal vacuum to be supplied to the exhaust gas recirculation control valve. The diaphragm of the vacuum control valve is biased by springs, in which the biasing force of the springs is controllable by a stepper motor regulated in response to the engine operating condition.

Abstract: An acne vulgaris treating and preventing topica, which comprises, as an active ingredient, at least one compound selected from the group consisting of caryophyllene, cedrene, longifolene and thujopsene. The topica exhibits sufficient inhibitory activity on proliferation of Propionibacterium acnes, a pathogenic bacterium causing acne vulgaris, at a small therapeutic dose without causing skin irritation.

Abstract: An acaricidal composition is disclosed, comprising one or more compounds selected from among methyl cinnamate, ethyl cinnamate, n-propyl cinnamate, isopropyl cinnamate, n-butyl cinnamate, isobutyl cinnamate, isoamyl cinnamate, n-hexyl cinnamate, allyl cinnamate, cinnamyl acetate, cinnamyl propionate, cinnamyl n-butyrate, cinnamyl isobutyrate, p-cresyl acetate, p-cresyl butyrate, p-cresyl isobutyrate, p-methylbenzyl propionate, .beta.-phenoxyethyl alcohol, phenoxyethyl acetate, phenoxyethyl propionate, phenoxyethyl n-butyrate, phenoxyethyl isobutyrate, methyl phenylacetate, ethyl phenylacetate, dibenzyl ether, heliotropin, methyl diphenyl ether and 2-methyl-1-methylbicyclo[2.2.1]hept-5-en-2-yl)-1-penten-3-ol as an active ingredient.

Abstract: A growth inhibitor for cariogenic bacteria which comprises containing therein dihydroguaiaretic acid as an active ingredient. In particular, the effect of growth inhibition to Streptococcus mutans RIMD 3125001 strain can be obtained at a concentration of 1/50,000.

Abstract: A growth inhibitor for cariogenic bacteria which comprises containing therein l-.alpha.-cadinol as an active ingredient. In particular, the effect of growth inhibition to Streptococcus mutans IPCR 1009 strain can be produced at a concentration of 1/50,000.