摘要:
The present invention is directed to substituted bicycloheptanedion e derivatives represented by a general formula �I!; ##STR1## wherein R represents C.sub.1 -C.sub.4 alkyl, R.sup.1 represents hydrogen, C.sub.1 -C.sub.10 alkyl, C.sub.2 -C.sub.4 alkenyl, C.sub.2 -C.sub.4 alkynyl, aralkyl, C.sub.2 -C.sub.4 haloalkynyl, C.sub.1 -C.sub.4 alkoxy C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, C.sub.2 -C.sub.4 haloalkenyl, etc. and R.sup.2 represents optionally substituted phenyl or optionally substituted pyridyl, the salts thereof and herbicides comprising the same as the active ingredient.
摘要:
A multi-beam laser exposure unit includes a light beam deflector for deflecting light beam in a predetermined direction, a plurality of laser devices, a pre-deflection optical system, including a glass lens and a plastic lens, for converting a cross sectional shape of light beam emitted from the respective laser devices to a predetermined shape, and a post-deflection optical system, including three lenses for image-forming each light beam deflected by the deflector to be scanned on a predetermined image surface at a uniform speed. Power of three lenses of the post-deflection optical system is defined to be positive, negative, positive in order in a direction parallel to a rotational axis of each of reflective surfaces of the deflector from the side close to the deflector. Also, the power of three lenses of the post-deflection optical system is defined to be positive, negative, positive in order in a direction perpendicular to the rotational axis. Thereby, an effective deflection angle can be enlarged and a registration error can be reduced.
摘要:
A multi-beam laser exposure unit of the present invention includes a light beam deflector for deflecting a light beam in a predetermined direction, a plurality of laser devices, a pre-optical system, including a glass lens and a plastic lens, for converting a cross sectional shape of a light beam emitted from the respective laser devices to a predetermined shape, and a post-deflection optical system, including two lenses for image-forming each light beam deflected by the deflector to be scanned on a predetermined image surface at a uniform speed. The power of the two lenses of the post-deflection optical system is defined to be positive in a direction parallel to a rotational axis of reflective surfaces of the deflector. Also, at least one lens surface of these lenses is formed not to include a rotational symmetrical surface.
摘要:
An image forming apparatus includes a fixing device to fix a developer image on an image bearing medium. The fixing device includes a first roller with a rubber layer coated on a shaft, the first roller being in contact with the developer image on the image bearing medium, and a second roller with a rubber layer having a smaller deformation than the first roller rubber layer coated on a shaft. The first and second rollers are rotatably pressed against each other to form a nip. The rubber layer thickness h.sub.1 of the first roller satisfies 0.512H
摘要:
A marker is provided outside the probe arrangement region of the lower surface of a probe card. In identifying positions of probes, the marker is recognized by a camera before the distal end of a reference probe is recognized. The camera is then moved from the position of the marker based on information about the relative position stored in advance to recognize the distal end of the reference probe. The camera is moved complementarily to make a reference point in the view of the camera and the distal end of the reference probe align with each other. Furthermore, where the same operation is performed for another reference probe, a deviation of the probes in the .theta. direction is calculated as .theta. correction data.
摘要:
In an optical unit of the present invention, a laser element and a glass lens are contained in a lens barrel. The ray axis of the laser beam is aligned with the optical axis of the glass lens without accidental displacement. By surely fixing the lens barrel, shift of the lens along the optical axis or variation in distance between the lens and laser element can be prevented. In contrast, a manufacturing precision of a lens barrel holding member may be lowered and low-in-cost. In order to ensure exact fixing of the lens barrel, a leaf-spring and a bonding agent are used. In this case, it is desirable that the force per unit contact length exerted by the leaf-spring onto the lens barrel be in the range of 100
摘要:
The output from the sensor detecting the flow rate of the fluid passing through the conduit is compared with the ceiling value and the appointed compensating signal is added to the output from the sensor to display the signal obtained on the basis of this addition result as the value of flow rate or reduce the openness of the control valve on the basis of the above described signal when the output from the sensor is larger than the threshold value, so that the mass flow meter can accurately display the flow rate even when the fluid passes in an excessive flow rate. In addition, even though the mass flow meter and the mass flow controller are fallen into the abnormal operating condition due to an excessive flow rate of fluid, they can be quickly returned to the normal operating condition.
摘要:
An electrical connector for terminating two or more layers of conductors includes an insulating housing having a plurality contacts mounted therein and, on opposite ends, a pair of latch arms with a latch opening, and first and second cable retainer members. The first retainer member has on opposite ends a pair of latch bosses for engagement with the latch openings to latch the first and second retainer members to the insulating housing. The second retainer member has on opposite ends two pairs of latch bosses for engagement with the openings to temporarily mount the first and second retainer members on the insulating housing. This temporary mounting device permits easy replacement of a cable before complete termination of the cable.
摘要:
Acrylamide crystals are prepared from an aqueous solution of acrylamide by causing the aqueous solution and a coolant to flow inside each electrolytically-polished cooling tube of a double-walled or shell-and-tube heat exchanger and outside the cooling tube, respectively, instead of relying upon vacuum crystallization.
摘要:
An improved hot water heating system used with an internal combustion engine is disclosed. This system provides a hot water flow control arrangement in which hot water supplied to a heating radiator is controlled by a valve and a pressure responsive bypassing means to keep a comfortable temperature. The pressure responsive bypassing means is closed when the maximum heating capacity is required to avail to the heating radiator all the hot water supplied by the engine even when the hot water pressure increases to exceed a bypassing pressure level.