Abstract: By using carbon fibers having a fineness of 25,000 deniers or more, the present invention provides a carbon fiber package including a cheese winding package or a coreless package in which an outside diameter of the package, a diameter of a bobbin or an inside diameter of the package, and a winding width are regulated in the specific ranges, a square-end type package in which a yarn width per fineness, wind angles at the start of winding and at the end of winding, and shifting of the yarn are regulated in the specific ranges, and a carbon fiber packed member in which an average bulk density is regulated in a specific range. Those carbon fiber packages and the carbon fiber packed member solve troubles and inconveniences during use, and also packages which have a high winding density and which do not break easily can be obtained.

Abstract: A heat treatment furnace for fiber for heat-treating a fiber bundle (yarn) formed of many continuous filaments in hot gas while running the yarn. The heat treatment furnace has a plurality of heat treatment chambers provided in a furnace body. The temperature in each individual heat treatment chamber is independently adjusted to a temperature which is different from the temperatures in the other heat treatment chambers. Thereby, the heat treatment furnace can be made small and is able to heat-treat fiber efficiently.This heat treatment furnace is useful, particularly, as a heat treatment furnace (an oxidizing heat treatment furnace, or a oxidizing furnace) for producing an oxidized fiber needed to produce a carbon fiber.

Abstract: A heat treatment furnace for fiber for heat-treating a fiber bundle (yarn) formed of many continuous filaments in hot gas while running the yarn. The heat treatment furnace has a plurality of heat treatment chambers provided in a furnace body. The temperature in each individual heat treatment chamber is independently adjusted to a temperature which is different from the temperatures in the other heat treatment chambers. Thereby, the heat treatment furnace can be made small and is able to heat-treat fiber efficiently.This heat treatment furnace is useful, particularly, as a heat treatment furnace (an oxidizing heat treatment furnace, or a oxidizing furnace) for producing an oxidized fiber needed to produce a carbon fiber.

Abstract: In a roller guide apparatus for guiding a steel material to be rolled into a rolling mill machine, a ratio (K/M) of an elastic constant (K [N/mm]) of the roller guide portion of a roller guide apparatus to a gradient (M [N/mm]) in a plasticity characteristic curve obtained when pressing the steel material nipped between the guide rollers in rolling is determined to be 0.5 or more, to thereby prevent the steel material from tilting between the guide rollers. As a result, dimensional accuracy in sectional shape and size of an end product can be improved, and miss-rolling can be prevented, thus producing high-quality rolled steel products without surface defects with remarkably high yield rate and productivity.

Abstract: An image reading device makes edge emphasis processing or density conversion processing for an image signal output after reading a film image different according to whether the film image is a negative image or a positive image.

Abstract: A sitting type water closet including a toilet bowl having an inner side and an outer side; a warm air duct for conveying warm air, formed on a first lower portion of the outer side of the toilet bowl as one piece therewith; a warm air outlet, disposed at an end of the warm air duct, for releasing warm air conveyed by the duct, the warm air outlet being at a mid position in the fore and aft direction of the toilet bowl and formed as one piece therewith; and a warm air guiding groove extending from the warm air outlet to the front of the toilet bowl, the warm air guiding groove being formed on a second lower portion of the outer side of the toilet bowl as one piece therewith.

Abstract: A sitting type water closet, comprising a toilet bowl, a warm air path for conveying the warm air to a front portion of the bowl, and warm air outlet disposed in a front portion of the bowl. Further, a water closet unit capable of attaching the same to a toilet room and blowing warm air out, comprising: an adapter having a means for fixing the adapter to the toilet room, and a warm air generator; and a sitting type water closet having a warm air duct for conveying warm air from the generator to a space in front of the water closet; the water closet being attached at the rear portion thereof to the adapter, and furthermore, a prefabricated toilet room unit including the above water closet unit are also disclosed.

Abstract: A film retrieving apparatus for retrieving a desired frame in a film has an optical device for projecting images recorded in the frames of the film, a moving device for moving the film along a plane orthogonal to the optical path of the optical device, image detecting device for putting out a signal when it detects that no image is present in a frame, a control device for stopping the film when each frame of the film has been placed in the optical path of the optical device and for controlling the moving device so as to move the film in a set time after the stoppage of the film, and an inhibition device for inhibiting a frame in which no image is present from stopping in the optical path for the set time by the signal put out from the detecting device.

Abstract: An image projection apparatus detects whether or not a film sheet such as a microfiche is clamped between a pair of transparent members upon energization of the apparatus, performs index frame projection when the film sheet is clamped therebetween, and performs ejection when the film sheet is not clamped therebetween, thereby preventing damage to the film sheet and the jam state.

Abstract: An electrophotographic apparatus capable of operating both in a mode for obtaining a positive image from a negative original and in a mode for obtaining a positive image from a positive original and capable of constantly controlling the image density in either mode. The apparatus can be used selectively in either mode, and in both modes the image density can be controlled by a common operating member.

Abstract: A electrophotographic apparatus capable of operating both in a mode for obtaining a positive image from a negative original and in a mode for obtaining a positive image from a positive original and capable of constantly controlling the image density in either mode. The apparatus can be used selectively in either mode, and in both modes the image density can be controlled by a common operating member.

Abstract: A trapless water flush toilet bowl fixture is disclosed. This fixture has: a water closet cesspool sealing member pivotally supported to shut off a waster water discharge port by impinging from underside upon this port; a sinker imparting a sufficient impingement force applied on a lower surface of the discharge port to the water closet cesspool sealing member to maintain a sealing state while resisting a load created when utilizing the same fixture; and a separating force imparting member manipulated by a manpower which member is capable of separating the sealing member from the discharge port by overcoming the impingement force.

Abstract: There is disclosed an image forming apparatus capable of image formation under optimum image forming conditions in response to the detected image density. The image forming apparatus has image forming unit for forming an image corresponding to an original on a recording material, detector for detecting the image density of the original, and controller for controlling the operable condition of said image forming unit to regulate the copy density in response to the image density detected by said detector said controller includes memory storing control data for the operable condition of said image forming unit in response to the detected image density, and is adapted to make an access to said memory in response to the detection signal of said detector and to control said operable condition according to control data obtained by said access.

Abstract: Disclosed is a reader-printer capable of being changed over between a reader mode in which the light image of an original is projected onto a screen and a printer mode in which the light image of the original is projected onto a photosensitive medium. The reader-printer has first optical means for forming a first optical path for projecting the light image onto the screen and second optical means for forming a second optical path for projecting the light image onto the photosensitive medium. The second optical means includes a first mirror and a second mirror. The first mirror is movable so that it is positioned outside the first optical path during the reader mode and is positioned in the first optical path during the printer mode. The second mirror is movable with the first mirror.

Abstract: An aqueous solution of calcium nitrite having high purity and high concentration is obtained by contacting a nitrogen oxides containing gas with an aqueous slurry of calcium hydroxide.It is necessary to use the aqueous slurry having high calcium hydroxide content such as 20 to 40 wt. %, whereby it is necessary to feed the gas having high nitrogen oxides concentration such as 5 to 12 vol. % to give high conversion to calcium nitrite. In order to prevent a formation of a by-product of calcium nitrate, a nitrogen oxides containing gas having 5 to 12 vol. % of a nitrogen oxides concentration and 1.5 to 2.5 of a molar ratio of NO/NO.sub.2 is fed under a high pressure enough to prevent a condensation of said slurry as a first stage and then, the unabsorbed gas is oxidized and the resulting gas having 1 to 5 vol. % of a nitrogen oxides concentration and 1.6 to 2.5 of molar ratio of NO/NO.sub.2 is fed to the aqueous slurry having 2 to 12 wt.

Abstract: An aqueous solution of calcium nitrite having high purity and high concentration is obtained by contacting a nitrogen oxides containing gas with an aqueous slurry of calcium hydroxide.It is necessary to use the aqueous slurry having high calcium hydroxide content such as 20 to 40 wt. %, whereby it is necessary to feed the gas having high nitrogen oxides concentration such as 5 to 10 vol. % to give high conversion to calcium nitrite. In order to prevent a formation of a by-product of calcium nitrate, a nitrogen oxides containing gas having 5 to 10 vol. % of a nitrogen oxides concentration and 1.2 to 1.5 of a molar ratio of NO/NO.sub.2 is fed as a first stage and then, the unabsorbed gas is oxidized and the resulting gas having 1 to 3 vol. % of a nitrogen oxides concentration and 1.2 to 1.5 of molar ratio of NO/NO.sub.2 is fed to the aqueous slurry having 3 to 10 wt.

Abstract: A rotor for a coarse reduction impact crusher with exchangeable blow bars including a rotor disk to be driven in rotation with a plurality of radially facing recesses in the periphery and the bars locked in the recesses between a supporting element welded in the recess on the trailing side thereof and a shoe being U-shaped and locked over a projection on the rotor disk with a pair of clamping keys securing the shoe with one of the keys being U-shaped, and the keys being removable axially, and the blow bar having forwardly and rearwardly extending teeth with inclined outwardly facing surfaces to lock beneath corresponding surfaces on the supporting element.

Abstract: In a method for producing sucrose from beets or beet molasses by the deionization process using ion-exchange resins or the saccharate process or in a method for producing sucrose from beets without resorting to either of the two processes mentioned above, .alpha.-galactosidase is allowed to act upon the sugar solution, while in process, so as to hydrolyze the raffinose contained therein into sucrose and galactose. The raffinose-hydrolyzed sugar solution is returned to the process following the stage at which the sugar solution is withdrawn. Thereafter, the sugar solution is treated in the fixed sequence to effect the recovery of sucrose contained in the sugar solution.

Abstract: Disclosed is a reader-printer capable of being changed over between a reader mode in which the light image of an original is projected onto a screen and a printer mode in which the light image of the original is projected onto a photosensitive medium. The reader-printer has first optical means for forming a first optical path for projecting the light image onto the screen and second optical means for forming a second optical path for projecting the light image onto the photosensitive medium. The second optical means includes a first mirror and a second mirror. The first mirror is movable so that it is positioned outside the first optical path during the reader mode and is positioned in the first optical path during the printer mode. The second mirror is movable with the first mirror.