Abstract: A developer density controlling apparatus includes image density detecting device for detecting a target density on the basis of a detected image and, if a difference between a toner density detected by a developer density detecting device and the target density is equal to or greater than a predetermined value, the image density detecting device does not correct the target density.

Abstract: The present invention relates to a developer density controlling apparatus in which image density detecting means a target density on the basis of a detected image corrects and, if difference between a toner density detected by developer density detecting means and the target density is equal to or greater than a predetermined value, the image density detecting means do not correct the target density.

Abstract: An image forming method for use in image forming apparatus including on the right surface thereof a discharge opening connectable with a post-processing device, the image forming method comprising the steps of:a first step of delivering one or more documents to a read position sequentially starting from the first document to read the documents at the read position, and outputting the documents in the form of images of the same posture as document images to be read on the documents;a second step of reading a document at a position where the same is placed and outputting the document in the form of an image of the same posture of a document image to be read on the document;a third step of forming, on the upper surface of a sheet to be supplied from the left surface side of the image forming apparatus, the images output in the first or second step in the order that they are read, and delivering the formed images in a direction of the right surface of the image forming apparatus; anda fourth step of reversing the

Abstract: A photosensitive composition for volume hologram recording used for recording an interference fringe produced by the interference of laser beams or lights having excellent coherence as a fringe having a different refractive index, the composition comprising:(a) a radical polymerizable compound having a 9,9-diarylfluorene skeleton, which is liquid at a normal temperature;(b) a compound having compatibility with the component (a), which is selected from the group consisting of a cationic polymerizable compound, a radical polymerizable compound having no 9,9-diarylfluorene skeleton and a plasticizer; and(c) a radical photopolymerization initiator which is sensitive to laser beam having a specific wavelength or light having a specific wavelength and excellent coherence to polymerize the component (a);wherein an average refractive index of the component (a) is larger than that of the component (b).

Abstract: The present invention provides a photosensitive composition for volume hologram recording, comprising the following components:(A) a cationic polymerizable compound and a radical polymerizable compound,(B) a cationic polymerization initiating material, and(C) a radical polymerization initiating material, as an essential component, wherein at least one of the cationic polymerizable compound and radical polymerizable compound of the component contains a siloxane group, and a difference in refractive index between the cationic polymerizable compound and radical polymerizable compound is not less than 0.01.

Abstract: Disclosed is a photosensitive composition for volume hologram recording which is used for recording an interference fringe produced by a laser beam or a light having excellent coherence, as fringes having different refractive index. The composition comprising:(a) a cationic polymerizable compound which is liquid at ambient temperature;(b) a radical polymerizable compound;(c) a radical photopolymerization initiator composition sensitized by a laser beam or a light having excellent coherence which has a specific wavelength to polymerize the ingredient (b); and(d) a cationic photopolymerization initiator composition which shows low photosensitivity to the light having a specific wavelength and is sensitized by a light having the other wavelength to polymerize the ingredient (a), wherein an average refractive index of the ingredient (a) is smaller than that of the ingredient (b). A process for producing the photosensitive composition is also disclosed.

Abstract: A benzolactam derivative represented by the following formula (I): ##STR1## wherein n represents an integer of from 1 to 3; R.sup.1 represents a straight- or branched-chain alkyl group or an aralkyl group; R.sup.2 represents a straight- or branched-chain alkyl group; R.sup.3 and R.sup.4 independently represent a hydrogen atom or a straight- or branched-chain alkyl group, and when R.sup.3 and R.sup.4 are adjacent each other on the phenyl group, they may be combined to form a cycloalkyl ring together with two carbon atoms of the phenyl group to which R.sup.3 and R.sup.4 bind, and said cycloalkyl ring may optionally have one or more substituents; and a anti-retroviral agent comprising the same as an active ingredient.

Abstract: A novel imidazole derivatives of formula I: ##STR1## wherein R.sup.1 is hydrogen, alkyl, halogen, or optionally substituted aryl; R.sup.2 is alkyl, optionally substituted aryl optionally substituted aralkyl, or optionally substituted hetero ring group; R.sup.3 is hydrogen, alkyl, optionally substituted aryl, optionally substituted aralkyl, or optionally substituted hydroxyalkyl; R.sup.4 is hydrogen, alkyl, halogen, acyl, optionally substituted hydroxyalkyl, optionally esterified or amidated carboxyl group, hydroxy group, aryl or arylthio; X is S, SO, SO.sub.2, CH.sub.2, or Se; n is an integer of 1 to 3, or a pharmaceutically acceptable salt thereof, said derivative having anti-HIV activity and being useful for the treatment of HIV infections.

Abstract: Disclosed is a photosensitive composition for volume hologram recording which is used for recording an interference fringe produced by a laser beam or a light having excellent coherence, as fringes having different refractive index. The composition comprising:(a) a cationic polymerizable compound which is liquid at ambient temperature;(b) a radical polymerizable compound;(c) a radical photopolymerization initiator composition sensitized by a laser beam or a light having excellent coherence which has a specific wavelength to polymerize the ingredient (b); and(d) a cationic photopolymerization initiator composition which shows low photosensitivity to the light having a specific wavelength and is sensitized by a light having the other wavelength to polymerize the ingredient (a), wherein an average refractive index of the ingredient (a) is smaller than that of the ingredient (b). A process for producing the photosensitive composition is also disclosed.

Abstract: A photopolymerizable composition comprising an addition polymerizable compound having an ethylenically unsaturated double bond and a photopolymerization initiating composition, said photopolymerizable initiating composition comprising (a) a dye of the formula: ##STR1## [wherein R.sub.1 is H, an alkyl group having 1 to 3 carbon atoms, a phenyl group or a halogen atom; R.sub.2 is a methyl group, an ethyl group or (CH.sub.2).sub.p -Q (wherein Q is a carboxyl group, a sulfonyl group or salt thereof and p is an integer of 1 to 4); X.sub.1 and X.sub.2 are independently --O--, --S--, --CH.dbd.CH-- or >N--R.sub.2 ; Y.sub.1 and Y.sub.2 are independently H, an alkyl group having 1 to 3 carbon atoms, an alkoxy group having 1 to 3 carbon atoms, a phenyl group or a halogen atom; Z is --COO or --SO.sub.3 ; m is 0 or 1; and n is an integer of 1 to 4] and (b) diaryliodonium salt as a polymerization initiator.

Abstract: A novel imidazole derivatives of formula I: ##STR1## wherein R.sup.1 is hydrogen, alkyl, halogen, or optionally substituted aryl; R.sup.2 is alkyl, optionally substituted aryl optionally substituted aralkyl, or optionally substituted hetero ring group; R.sup.3 is hydrogen, alkyl, optionally substituted aryl, optionally substituted aralkyl, or optionally substituted hydroxyalkyl; R.sup.4 is hydrogen, alkyl, halogen, acyl, optionally substituted hydroxyalkyl, optionally esterified or amidated carboxyl group, hydroxy group, aryl or arylthio; X is S, SO, SO.sub.2, CH.sub.2, or Se; n is an integer of 1 to 3, or a pharmaceutically acceptable salt thereof, said derivative having anti-HIV activity and being useful for the treatment of HIV infections.

Abstract: On processing an input picture into a processed picture in compliance with an input concatenated-command, a command editing unit edits the input concatenated-command into an edited concatenated-command which is equivalent in function to the input concatenated-command and is less in length than the input concatenated-command. A command executing unit executes the edited concatenated-command for the input picture to produce the processed picture. Preferably, the command editing unit has a dividing unit which processes the input concatenated-command into a succession of elementary commands. A combining unit combines the elementary commands into the edited concatenated-command by deleting, from the succession of the elementary commands, a succession of a particular elementary command and an inverse elementary command which immediately succeeds the particular elementary command and is inverse in function to the particular elementary command.

Abstract: In a apparatus for detecting toner shortage in a developing unit for use in an image recording system which forms a latent electrostatic image on a carrier by exposure based on an image signal and which develops the latent image to record the image, provided are a toner shortage sensor in a container for checking as to the presence or absence of a toner in the container at the location of the toner shortage sensor, a counter section for counting in a cumulative manner the number of image prints and the number of pixels produced by the image recording system when the toner shortage sensor detects a toner shortage, the counter section for successively subtracting the number of image prints and the number of pixels from the associated cumulative totals when the sensor detects the presence of toner in the container, and a control section for stopping at least the operation of the image recording system when the sumulative counting value of either the number of image prints or the number of pixels has reached a pr

Abstract: A tape cartridge including a top case half, bottom case half and tape guide piece each separately molded, tape guide piece having upper and lower edges on the back surface thereof provided with parallel upper and lower ribs defining recess portions so as to avoid undesired engagement with the tape wound on the hubs.

Abstract: There is provided a tape cartridge comprising a top plate and bottom plate made of metal and an intermediate frame made of plastic resin material disposed between the top and bottom plates.

Abstract: This invention provides anti-HBs monoclonal antibodies HBs 8Cl, HBs 18E9 and HBs 22B7, an anti-human IgM monoclonal antibody HIgM 10C9 and an anti-mumps virus monoclonal antibody MPV 10G3 capable of inhibiting nonspecific reaction in the reverse passive agglutination, hybridomas producing them, a method for sensitizing fixed hemocytes with anti-HBs monoclonal antibodies, a fixed hemocyte sensitized with them by the said method, a method for inhibiting the said nonspecific reaction by utilizing the said monoclonal antibodies and an assay for HBs antigen by appropriately combining the above.

Abstract: A data processing method uses a file which has sequentially arranged records each having a data area for designating the number of measurements for each object or target to be measured, a data area provided for each of a plurality of pre-set measurement items, and a data area for storing data relating to the different times at which the items were measured. When measured data of each item are entered in the file, the time which has elapsed since the entry of the preceding measured data is determined. If the time is greater than a predetermined time, or if it is smaller than the predetermined time but the measured items are the same as the previously-measured items, then the data of the number of the preceding measurements is updated, the current measured data is stored in the data areas of the associated measurement items of the next record, and the data of the current measuring time is stored in the measuring time data area of that record.

Abstract: In a recording tape cartridge, a top case half and a bottom case half are combined through at least three combinations of a boss and a boss receiving hole two of which are disposed at the front or rear corners of the tape cartridge and one of which is disposed at the central portion of the side opposite to the side on which said two combinations are disposed so that the three combinations are in a triangular relation, whereby the mechanical strength of the cartridge case can be improved and the recording tape advance can be stabilized.

Abstract: A method for stabilizing rubella HA antigen which comprises adjusting a rubella HA antigen suspension at pH 9.6 or higher, and more preferably, concurrently adding sodium azide thereto, or adding sodium azide alone at a concentration of 1 to 10% (w/v) thereto without the above adjustment of pH.

Abstract: A preservative solution for fixed avian erythrocytes for the viral hemagglutination test of this invention comprises purified water which may contain serum albumin, glycerol or dimethyl sulfoxide and, additionally, a preventive against the growth of bacteria as occasion demands. Fixed avian erythrocytes can stably be preserved in this solution. HA and HI test can precisely be performed by employing fixed avian erythrocytes suspended in this invention.