Abstract: The present invention relates to a recording medium conveying apparatus for conveying a recording medium from one position to another position, comprising a rotary body pair capable of holdin, the recording medium, driving means for rotatively driving the rotary body pair and moving means for moving the rotary body pair. The rotary body move to a first position for feeding the recording medium from a first route to a second route and to a second position other than the above.

Abstract: A human body detector for a seat which does not deteriorate comfort of sitting even when it is disposed on the seat, has a high sensitivity and can be easily fitted to the seat. Vibration detection means (5) is disposed in such a manner that even when a person is seated, the means (5) comes into contact with the bottom surface of a seat pad (16) of a seat (19) and accordingly the person does not feel the means (5). According to this construction, the human body does not easily feel the means (5) by the provision of the seat pad (16), the existence of the vibration detection means (5) is hardly felt even when the hardness and the shape are changed, and various measures for improving the sensitivity of the vibration detection means (5) can be taken. The vibration detection means (5) may be merely bonded to the seat pad (16) or may be fixed to a seat spring (17) or a seat frame (18), and can be fitted more easily to the seat (19) than when it is disposed below a surface cloth (15) of the seat (19).

Abstract: There is disclosed an image reading device provided with a photoelectric conversion unit for converting an image on an original into an electric signal, an imaging optical system for focusing the image of the original on the photoelectric conversion unit, and a replacing mechanism for replacing the relative position of the original and the photoelectric conversion unit through the imaging optical system.

Abstract: A recording apparatus comprises transporting rollers for transporting a recording medium in a sandwiched state; a platen for supporting the recording medium at a recording position; and a releasing mechanism for moving the platen from a position at which the platen is located during a recording operation and releasing the recording medium sandwiched by the transporting rollers.

Abstract: There is provided a highly water-absorptive polymer composition comprising:(A) 100 parts by weight of a highly water-absorptive polymer having a crosslinked structure, comprising as its constituent a carboxyl group and/or a carboxylate group; and(B) 0.05 to 10 parts by weight of an additive selected from the group consisting of an oxalic acid (salt) compound, a sulfate of a metal selected from titanium, zirconium and vanadium, and a crystalline or noncrystalline, high-purity particulate titania having a mean particle diameter of 1 .mu.m or less, a specific surface area of 10 m.sup.2 /g or more as determined by the Brunauer-Emmett-Teller method, and, when crystalline, a crystal structure of a mixed type of rutile and anatase.

Abstract: An image reading apparatus comprises a plurality of line sensors for reading images at different positions of a document sheet, a drive unit for relatively driving the line sensors to said document sheet, and a control unit for controlling the drive unit to intermittently effect the relative drive to read the document sheet image in a plurality of steps. The control unit controls the drive unit such that a drive distance by the relative drive is equal to an integer multiple of a read line width of the line sensors.

Abstract: In an image reading apparatus, a first object and a second object are adapted to be illuminated on different regions each other with a light beam from a light source by an illuminating device. A first imaging optical system is provided to image image information of the first object on a single photoelectric converting device. A second imaging optical system is provided in an optical path different from that of the first imaging optical system so as to image image information of the second object onto the photoelectric converting device. The first and second object to be illuminated, and the photoelectric converting device are relatively displaced to read the image information of the first and second objects.

Abstract: A recording apparatus comprises a recording head for recording an image on a sheet positioned at a predetermined recording position, a conveying device for conveying the sheet so that the sheet passes through the recording position, and a supporting device for supporting the conveying device in such a manner as to shift the conveying device in a first direction transverse to a sheet feeding direction and separating from the recording head and then to shift the conveying device in a second direction in the sheet feeding direction.

Abstract: A process for producing a highly water absorptive polymer by polymerizing a water-soluble, ethylenically unsaturated monomer in a water-in-oil type of dispersion consisting of the dispersion phase of an aqueous monomer solution comprising the water-soluble, ethylenically unsaturated monomer, water, a water-soluble polymerization initiator and an optional water-soluble crosslinking agent and the continuous phase of an organic solvent containing a dispersant, characterized in that the aqueous monomer solution is added to the organic solvent at such a temperature as to form an oil-in-water type of dispersion, and the oil-in-water type of dispersion is then heated at least to a phase reversal temperature at which it is transformed into the water-in-oil type of dispersion.

Abstract: There is provided a process for producing a substantially water-insoluble, highly water-absorptive polymer which comprises subjecting an aqueous solution of a monomer comprising as a main component acrylic acid and/or its alkali metal salt to polymerization in the presence of a hypophosphorous acid compound.

Abstract: A highly water-absorptive powdery polymer composition comprising a mixture of a highly water-absorptive powdery polymer and a porous powder of a high-purity silicon dioxide, said powder having (a) a mean particle size of 0.1 to 30 .mu.m as measured by the Coulter counter method and (b) a specific surface area of 500 m.sup.2 /g or more as measured by the BET (Brunauer-Emmett-Teller) method.

Abstract: There is provided a process for producing a highly water absorptive polymer, which comprises making up a mixture (A) comprising an aqueous solution of (a) a partially neutralized product of acrylic acid with 20% or more of carboxylic groups being neutralized to an alkali metal salt or ammonium salt, (b) a crosslinking agent having two or more copolymerizable vinyl groups in one molecule, (c) a basic vinyl monomer in a quantity of 20 mol % or less based on said partially neutralized product of acrylic acid, (d) a nonionic surfactant with HLB of 7 or more and (e) an oxidative radical polymerization initiator, said mixture (A) being maintained at a temperature of 50.degree. C. or lower, and a mixture (B) comprising an amine or a reducing agent dissolved in water or in said mixture (A) from which at least the component (e) is removed, and mixing both the mixtures to cause polymerization.

Abstract: A film image reading apparatus has a conveying section for sequentially conveying a plurality of film originals to a reading position, a reading section for reading an image of a film original conveyed to the reading position by the conveying section, a detecting section for detecting a direction of the image of the film original conveyed to the reading position, and a controlling section for controlling outputting of an image signal from the reading section in accordance with the direction of the image detected by the detecting section.

Abstract: A process for the preparation of water absorptive resins which comprises supplying a solution containing at least 20% by weight of a water soluble ethylenically unsaturated monomer as a main component to a polymerization vessel accommodating a vapor phase comprising steam or a mixture of steam with at least one gas substantially inert with respect to polymerization, and polymerizing the monomer in the vapor phase under the relative humidity conditions in the vapor phase of 30% or more.

Abstract: A copying machine, or a similar image recording apparatus, does not terminate the image forming process, even when an abnormality in sheet transportation is detected, until the process is completed, and a sheet bearing the image prepared in this image forming process is transported after jammed sheets are removed, so that unnecessary waste of imaging sheets can be avoided.

Abstract: A plurality of developing devices or units are supported on a supporting member or turret which is rotatable to revolve the developing devices to move a desired developing device to a developing station where the developing operation is effected with the desired one of the developing devices. The developing devices are each provided with detecting elements for detecting the remaining amount of the developer or the concentration of the developer. The detecting elements are located at such a position that during the rotation of the supporting member the developer particles move with the rotation of the supporting member so that the detecting element is constantly cleaned by the moving developer.

Abstract: A color image forming apparatus wherein a plurality of developing devices or units are supported on a supporting member or turret which is rotatable to revolve the developing devices to move a desired one of the developing devices to a developing station where the developing operation is effected with the desired one of the developing devices so that a color image is formed. The presence, absence or the amount of the developer within the developing devices are detected. When the detection indicates that the toner is to be supplied into a developing device, the developing device is moved to a predetermined developer supplying position, and then is stopped so that the developing device is supplied with the developer at the developer supplying position.

Abstract: An image forming apparatus for forming an unfixed image on a recording material includes a fixing device having a pair of rotatable members for holding therebetween and conveying the recording material to fix the unfixed image on the recording material, speed control device for variably controlling the fixing rotational speed of the pair of rotatable members to a first fixing speed and a second fixing speed lower than the first fixing speed, application apparatus for intermittently supplying a parting agent to at least one of the pair of rotatable members, and application control apparatus for variably controlling the application acting period of the application apparatus in accordance with the fixing rotational speed of the pair of rotatable members variably set by the speed control device.

Abstract: This invention provides a recording apparatus having parting agent removing means. Fixing means for fixing a formed toner image on a recording medium has a fixing rotatable member for contacting the toner image side of the recording medium and means for applying offset preventing parting liquid to the rotatable member. Means for acting on a special recording medium inferior in parting liquid absorbing capability to paper and removing the parting liquid from the special recording medium is positioned downstream of the fixing rotatable member with respect to the direction of conveyance of the recording medium. Control means is provided for causing the removing means to act on the special recording medium. The parting liquid on the recording medium such as film can be greatly decreased by the removing means.

Abstract: A compound of the formula, ##STR1## wherein R.sup.1 is methyl or ethyl, R.sup.2 and R.sup.3 are each C.sub.5 -- or C.sub.6 --alkyl, and Z is chlorine for use as a blue disperse dye of hydrophobic fibers, either alone or as a mixed dye in combination with anthraquinone; the compound combines low cost relative to anthraquinone with superior stability in the dye bath and excellent dyeability; mixed dyes retain anthraquinone-imparted brilliance of color, have good color fastness, dyeability and reproducibility characteristics, and maintain low cost.