摘要:
A variable-magnification optical system has, from the object side to the image side, at least a first lens group having a positive optical power, a second lens group having a negative optical power, and a third lens group having a positive optical power. The first lens group includes an optical prism that changes the optical path, and a prescribed conditional formula is fulfilled.
摘要:
A connector is provided having functions for sensing the half-fitted state and improved compactness and workability through a simple construction with few components. The connector includes: a first connector part 2 having a first housing fitted with a contact pin; a second part 21 having a second housing with a contact pin connecting with the aforesaid one; and a rotating ring 15 fitted rotatably to the first or second housing and having locking legs 161 that lock coupling of the two parts. On rotating ring 15, a latching section 181 that inhibits the rotation of the rotating ring and housing where the rotating ring is fitted is provided. Prior to coupling of the two parts, the rotating ring 15 is latched to the housing by the latching sections. During mating-coupling, anti-rotation is terminated by the other part being pushed in, the rotating ring 15 is free to rotate, and coupling of the two parts is locked by the locking legs 161.
摘要:
The present invention provides magenta dyestuff represented by the formula (1): (symbols are as defined in the present description), with hue and vividness suitable to ink-jet recording, excellent fastness to light, gas, water and so on in records and an ink composition using said dyestuff.
摘要:
A plurality of lens units in an optical unit has at least: from the object side toward the image side, a first lens unit having a positive optical power, a second lens unit having a negative optical power, a third lens unit having a positive optical power, and a fourth lens unit having a positive optical power. When at least the first lens unit moves from the image side to the object side in zooming from the wide-angle end position to the telephoto end position, at least one gap between the lens units varies. Predetermined conditional formulae are satisfied.
摘要:
A pneumatic tire comprises a tread portion, a pair of sidewall portions, a pair of bead portions, a carcass, a belt, and a reinforcing member arranged in a tire zone including at least the sidewall portion, wherein a shearing rigidity in the circumferential direction of the reinforcing member is made larger at a first tire zone located at an outside of the vehicle than at a second tire zone located at an inside of the vehicle in the same tire at a posture of mounting the tire onto a vehicle.
摘要:
Embodiments of the invention relate to easily achieving a perpendicular magnetic recording medium with high reliability and a magnetic recording apparatus with high recording density by improving the magnetic properties and surface smoothness of the soft magnetic underlayer and, moreover, enhancing adhesion with the substrate. In one embodiment, a perpendicular magnetic recording media composing a substrate, an adhesion layer formed on the substrate in which a second underlayer is laminated on a first underlayer, a soft magnetic underlayer formed on the second underlayer, an intermediate layer formed on the soft magnetic underlayer, a perpendicular recording layer formed on the intermediate layer, wherein the aforementioned first underlayer consists of an alloy composed of at least two elements selected from the group of Ni, Al, Ti, Ta, Cr, and Co, and the aforementioned second underlayer consists of Ta or a Ta-based amorphous structured alloy containing at least one element selected from the group of Ni, Al, Ti, Cr, and Zr.
摘要:
New anthrapyridone compounds represented by the general formula (14): {wherein R represents a hydrogen atom, an alkyl group (optionally substituted with mono- or di-alkylamino group), a lower alkyl group (optionally substituted with a hydroxyl group or a cyano group), or a cyclohexyl group; Y represents a chlorine atom, a hydroxyl group, an amino group, mono- or di-alkylamino group (optionally substituted with a sulfonic acid group, a carboxy group, or a hydroxyl group), an aralkyl- or cycloalkyl-amino group, an alkoxy group, a phenoxy group (optionally substituted with a sulfonic acid group, a carboxy group, an acetylamino group, an amino group, or a hydroxyl group), an anilino group (optionally substituted with a sulfonic acid group or a carboxy group), or a naphthylamino group (optionally substituted with a sulfonic acid group); and X represents a bridging group}; or salts thereof and magenta inks containing the same, which have hues and vividness suitable for ink-jet recording and give records excellent in fastness to light, gas, water and so on.
摘要:
The ink composition comprises as its coloring matter component a water-based magenta composition containing anthrapyridone compound represented by the formula (1): wherein R represents hydrogen atom or methyl group; X represents phenyl group, phenoxy group or halogen atom; and n is an integer of 1 to 4, or salt thereof.
摘要:
An image pickup and display device including a body having an image pickup lens, a display unit capable of displaying an image and having a longitudinal side extending along a longitudinal side of the body in a folded state where the display unit is in close proximity to or abuts against the body, a first rotation shaft having an axis extending along a surface of the body, a rotation-supporting mount rotatably attached to the body through the first rotation shaft, and a second rotation shaft extending perpendicular to the first rotation shaft through the rotation-supporting mount and rotatably supporting the display unit with respect to the rotation-supporting mount. The second rotation shaft extends along a side of the display unit and a side of the body when the display unit is folded. With this, even when the body is in a stable horizontal position, the display unit can be viewed excellently by being rotated around the second rotation shaft.