Abstract: A cold working lubricant for metallic conduits in the form of a liquid wherein butyl acrylate ester-methyl methacrylate ester copolymer of 10-40 in resin acid value and -10.degree. to 20.degree. C. in glass transition temperature is emulsified and dispersed; an emulsified product of the straight chain saturated fatty acid or its ester with a melting point of 30.degree.-70.degree. C. can be further added thereto.

Abstract: A silver halide photographic emulsion and a process for preparing the same are disclosed, wherein the emulsion has a composition of the formula:AgBr.sub.1-x-y Cl.sub.x I.sub.ywherein x is a molar fraction satisfying the formula 0<x.ltoreq.0.6, and y is a molar fraction satisfying the formula 0.ltoreq.y.ltoreq.0.01, wherein the relative standard deviation of the silver chloride content of individual silver halide grains is not more than about 20%. The emulsion has improved preservability in a liquid state during the period from its initial preparation through the coating step.

Abstract: Most of the elements constituting this camera system consists of digital circuits, whereby a central processing unit is built in this camera system in such a manner that various kinds of photographic modes are possible without increasing the number of the elements.

Abstract: A method for a charge control and multi-step deflection control type ink jet printer is disclosed which renders halftone by multi-step gradation. When an ink ejected from a nozzle is to be charged, a charging voltage is suitably varied to cause a shift in deflection by a pitch smaller than one dot pitch in the deflection direction, thereby selectively causing dots in the deflection direction to overlap and separate from each other. The pitch for developing the shift is variable to control the overlapping or separating degree of the dots in order to accomplish gradation in numerous densities.

Abstract: A control system for a charge deflection type ink jet printer which prints out one character line of print data by a plurality of strokes on a paper is disclosed. Data associated with odd scanning lines are printed out by one printing stroke of a carriage, then the paper is fed by a predetermined amount, and then data associated with even scanning lines are printed out. Thereafter, the paper is fed by an amount produced by subtracting a number of dots corresponding to a predetermined number of odd or even scanning lines from a number of dots corresponding to the total number of the odd and even scanning lines.

Abstract: An exposure control system for a photographic camera of the type provided with a shutter preselection automatic exposure range and a diaphragm preselection automatic exposure range, wherein various exposure control parameters are digitized and applied to a digital computer for providing either shutter interval or diaphragm aperture control signals. For exposure control in the shutter preselection automatic exposure range, there are provided a signal generator associated with the camera diaphragm mechanism, an analog-to-digital converter cooperative therewith for providing digital signals corresponding to ever varying aperture sizes as the diaphragm mechanism is operated from its fully open position, and a comparator connected between said computer and converter upon detection of coincidence of the signal from the computer with one of the signals from the converter to provide a diaphragm mechanism arresting signal.

Abstract: Most of the elements constituting this camera system consists of digital circuits, whereby a central processing unit is built in this camera system in such a manner that various kinds of photographic modes are possible without increasing the number of the elements.

Abstract: In the disclosed focus adjusting device, at least part of an image forming optical system and a focus adjusting mechanism is arranged within a housing attachable to and detachable from a camera body. A focus condition detector includes a photo-sensor disposed on a plane corresponding to the camera image plane, an electrical detection circuit connected to the photo-sensor, and a detecting optical system for forming an image of at least a part of the object on the surface of the photo-sensor. An aural indicator emits a sound to inform a photographer of the condition of the image formed on the surface of the predetermined focal plane as determined by the focusing condition detector.

Abstract: A fluorine-containing aminosulfonate of the general formulaR.sub.f -Q.sub.l -N(R.sub.1)-Q.sub.2 -N(R.sub.2)-Q.sub.3 -SO.sub.3 Mwherein R.sub.f represents a perfluorinated aliphatic group having 3 to 16 carbon atoms; Q.sub.1 represents --CH.sub.2 --.sub.h in which h represents an integer of 1 to 6, --CH.sub.2 CH.sub.2 Z--.sub.i in which Z represents --O-- or --S--, and i represents an integer of 1 to 4, ##STR1## or a combination of these; Q.sub.2 and Q.sub.3 are identical or different and each represents --CH.sub.2 --.sub.j in which j represents an integer of 1 to 6, ##STR2## in which R.sub.3 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, or ##STR3## M represents a hydrogen atom, an alkali metal atom, an alkaline earth methal atom, or --N(H).sub.m (R.sub.4).sub.n in which R.sub.4 represents an alkyl group having 1 to 3 carbon atoms, and m and n represent 0 or an integer of 1 to 4 provided that m+n=4; R.sub.

Abstract: This invention relates to cameras capable of making exposures in shutter priority, or manual and program modes. Since in the program mode the shutter time and diaphragm aperture are unequivocally determined, the computed value of shutter time is liable to exceed a limit such that effects of shaking of the operator's hand become noticeable. The present invention solves this problem by making use of the shutter dial used for selection of the shutter priority or manual mode to set the limit value. When a longer shutter time than this limit is derived, the diaphragm aperture is readjusted in accordance with this limit of shutter time and the object brightness, while the shutter is adjusted to that limit value.

Abstract: A droppage in a power source voltage below a prescribed value is prevented by using an electro-magnetic device of low power consumption type in a single lens reflex camera, and at the same time when the power source voltage is lower than the prescribed value, an erroneous function prevent circuit is activated to make the control circuit of a camera electronically inoperative and an indication of warning is made.

Abstract: An anti-soiling treating agent comprising(a) a perfluoroalkyl-containing hybrid urethane compound (I) resulting from the addition reaction of two perfluoroalkyl-containing alcohols which have a difference in melting point of at least 20.degree. C. and are selected from compounds of the following formulaRf--A--B--OHwherein Rf represents a linear or branched perfluoroalkyl group, A is the group --CH.sub.2 --.sub.

Abstract: The present invention relates to a control device for camera, so designed as to sequentially control the photographing period, the release time and the release frequency in an automatic way and to print the data information on the film. The eventual abrupt change of photographic conditions is detected so as to carry out the releasing independently of the sequential control, stopping the sequential control and automatically controlling the starting time or the determination time of the sequential control.

Abstract: In the disclosed camera with a program shutter, exposure control with a desired combination of shutter time and diaphragm value is made possible without variation of the gradient of the program curve, by shifting the program constant a specific amount.

Abstract: A camera having an exposure control device in which various photographing informations are converted into digital amounts and supplied to a digital operation circuit and the exposure is controlled by the output of the operation circuit. The camera comprises a digital-analogue converter for converting diaphragm informations from the operation circuit into analogue diaphragm informations, a comparison means for comparing the analogue diaphragm informations from a photographing lens with the analogue informations from the above digital-analogue converter, and an alternating switch which supplies the informations from the photographing lens to the comparison means for shutter preference photographing, and supplies the analogue informations from the photographing lens to the analogue-digital converter for diaphragm preference photographing.

Abstract: A powdery fire-extinguishing agent containing a powder as main ingredient and a powder as adjuvant, both or one of said powders being treated with an organofluorine compound which has a fluoroalkyl group containing 3 to 20 carbon atoms, which has a major transition temperature of 20.degree. C. or higher and a fluorine content of 5% by weight or more, which is insoluble in water and insoluble or sparingly soluble in a combustible liquid, and which has oil repellency; and a process for preparation thereof.

Abstract: The present invention concerns with a so-called program-controlled camera where only one different combination of diaphragm aperture and shutter time value is determined based on a different object brightness. Particularly in the program-controlled camera where the object brightness is measured at the full open aperture and then combined with the preset value of film speed to derive a difference between the full open aperture and the effective diaphragm value, in accordance with which the shutter time is controlled while the diaphragm is adjusted to that effective value, a device is provided for carrying out a program shift in automatic response to the full open aperture value of the interchangeable lens used in the camera.

Abstract: A focus detecting system for detecting focusing condition of an image forming optical system to an object. In this system there are produced first and second signals corresponding to imaging conditions of object images at first and second positions on front and rear sides of and at substantially equal distances from a predetermined focal plane of said optical system, respectively, and another signal corresponding to imaging condition of an object image at third position substantially coincident with said predetermined focal plane. In accordance with these first, second and third signals, a decision is given as to the focusing condition, namely, in-focus, near-focus or far-focus condition, as well as, the distinction between correctly focused condition and considerably defocused condition.

Abstract: In the disclosed camera, an exposure value determining arrangement produces an electrical signal in response to a light measuring facility and a film sensitivity setting device. An exposure factor unit determines a combination of shutter speed and aperture value for a proper exposure in response to the exposure value determining arrangement. A control connected to the exposure factor unit varies the combination of exposure factors in the exposure factor unit in response to the set position of a program constant setting arrangement which is set for a particular program constant.

Abstract: The present invention relates to a system for exposure measurement and/or focus detection by means of image senser such as photo diode array (MOS image senser), CCD (charge coupled devices) consisting of a plural number of adjacently disposed respectively integrated fine light sensing elements whereby the image pattern of the object is scanned purely electrically in such a manner that the then obtained output of each light sensing element is converted into a digital value one after another for processing.