Abstract: A seal structure is provided to block a clearance between a rotational casing and a fixed housing for driving a crawler of a crawler vehicle. A seal ring is held in a first annular holding groove provided in the fixed housing together with a first O-ring that biases the seal ring toward the outside of the first holding groove. A second holding groove having an opening facing the first holding groove is provided in the rotational casing to hold a slide ring having a higher rigidity than that of the seal ring together with a second O-ring that biases the slide ring toward the seal ring. A foreign object such as mud is thereby prevented from invading a gear chamber without increasing a frictional loss.

Abstract: A seal structure is provided to block a clearance between a rotational casing and a fixed housing for driving a crawler of a crawler vehicle. A seal ring is held in a first annular holding groove provided in the fixed housing together with a first O-ring that biases the seal ring toward the outside of the first holding groove. A second holding groove having an opening facing the first holding groove is provided in the rotational casing to hold a slide ring having a higher rigidity than that of the seal ring together with a second O-ring that biases the slide ring toward the seal ring. A foreign object such as mud is thereby prevented from invading a gear chamber without increasing a frictional loss.

Abstract: A seal structure is provided to block a clearance between a rotational casing and a fixed housing for driving a crawler of a crawler vehicle. A seal ring is held in a first annular holding groove provided in the fixed housing together with a first O-ring that biases the seal ring toward the outside of the first holding groove. A second holding groove having an opening facing the first holding groove is provided in the rotational casing to hold a slide ring having a higher rigidity than that of the seal ring together with a second O-ring that biases the slide ring toward the seal ring. A foreign object such as mud is thereby prevented from invading a gear chamber without increasing a frictional loss.

Abstract: A liquid discharge recording apparatus includes: a liquid containing first glycol ether; a liquid discharge head which discharges the liquid; an absorber which absorbs the liquid discharged from the liquid discharge head; and second glycol ether which is contained in the absorber and of which vapor pressure is lower than that of the first glycol ether.

Abstract: A liquid discharge recording apparatus includes: a liquid; a liquid discharge head configured to discharge the liquid; an absorber configured to absorb the liquid discharged from the liquid discharge head; and unsaturated fatty acid of which specific gravity is smaller than that of the liquid and which is contained in the absorber.

Abstract: A liquid discharge recording apparatus includes: a first liquid containing trimethylolpropane; a liquid discharge head configured to discharge the first liquid; a second liquid containing a solvent of which freezing point is less than 20 degrees Celsius and of which specific gravity is not more than 1.12; and an absorber which is configured to contain the second liquid and which is configured to absorb the first liquid exited from the liquid discharge head, wherein a blending amount (% by weight) of the solvent in the second liquid is not less than a blending amount (% by weight) of the trimethylolpropane in the first liquid.

Abstract: A liquid discharge recording apparatus includes: a first liquid containing a diol represented by the following formula (1): HOCH2nOH??(1) wherein in the formula (1), “n” represents an arbitrary integer; a liquid discharge head which discharges the first liquid; a second liquid containing a non-volatile humectant and a non-volatile 1,2-alkylenediol; and an absorber which contains the second liquid and which absorbs the first liquid exited from the liquid discharge head, wherein not less than 20% by weight to not more than 50% by weight of the non-volatile humectant is contained in the second liquid; not less than 2% by weight to not more than 10% by weight of the non-volatile 1,2-alkylenediol is contained in the second liquid; and a ratio of a blending amount (% by weight) of the non-volatile 1,2-alkylenediol in the second liquid to a blending amount (% by weight) of the diol represented by the formula (1) in the first liquid is not less than ¼.

Abstract: A liquid discharge recording apparatus includes: a first liquid containing 2-pyrrolidone; a liquid discharge head configured to discharge the first liquid; a second liquid containing a solvent of which freezing point is less than 20 degrees Celsius and of which specific gravity is less than 1.12 g/cm3; and an absorber which contains the second liquid and which is configured to absorb the first liquid exited from the liquid discharge head.

Abstract: A seal structure is provided to block a clearance between a rotational casing and a fixed housing for driving a crawler of a crawler vehicle. A seal ring is held in a first annular holding groove provided in the fixed housing together with a first O-ring that biases the seal ring toward the outside of the first holding groove. A second holding groove having an opening facing the first holding groove is provided in the rotational casing to hold a slide ring having a higher rigidity than that of the seal ring together with a second O-ring that biases the slide ring toward the seal ring. A foreign object such as mud is thereby prevented from invading a gear chamber without increasing a frictional loss.

Abstract: A liquid discharge recording apparatus includes: a first liquid containing trimethylolpropane; a liquid discharge head configured to discharge the first liquid; a second liquid containing a solvent of which freezing point is less than 20 degrees Celsius and of which specific gravity is not more than 1.12; and an absorber which is configured to contain the second liquid and which is configured to absorb the first liquid exited from the liquid discharge head, wherein a blending amount (% by weight) of the solvent in the second liquid is not less than a blending amount (% by weight) of the trimethylolpropane in the first liquid.

Abstract: A liquid discharge recording apparatus includes: a first liquid containing a diol represented by the following formula (1): HO?CH2?nOH??(1) wherein in the formula (1), “n” represents an arbitrary integer; a liquid discharge head which discharges the first liquid; a second liquid containing a non-volatile humectant and a non-volatile 1,2-alkylenediol; and an absorber which contains the second liquid and which absorbs the first liquid exited from the liquid discharge head, wherein not less than 20% by weight to not more than 50% by weight of the non-volatile humectant is contained in the second liquid; not less than 2% by weight to not more than 10% by weight of the non-volatile 1,2-alkylenediol is contained in the second liquid; and a ratio of a blending amount (% by weight) of the non-volatile 1,2-alkylenediol in the second liquid to a blending amount (% by weight) of the diol represented by the formula (1) in the first liquid is not less than ¼.

Abstract: There is provided a water-based ink for ink-jet recording including a self-dispersible carbon black modified by carboxylic acid group, a water, and a water-soluble organic solvent, wherein a weight concentration of phosphate ion in the water-based ink is not more than 35 ppm. The water-based ink for ink-jet recording has excellent water resistance and is capable of lowering or preventing corrosion of a metal member, in an ink-jet recording apparatus, contacting with the water-based ink for ink-jet recording.

Abstract: An ink-jet recording apparatus performing recording on a recording medium includes: a water-based yellow ink containing a yellow dye, a water-based magenta ink containing a magenta dye and a water-based cyan ink containing a cyan dye of which hue angles ?H° defined in a CIELAB color space are within the predetermined ranges; an ink-jet head configured to discharge the water-based yellow, magenta and cyan inks; and a controller configured to control the ink-jet head so as to satisfy the following conditions (A) and (B) to thereby form a composite black on the recording medium: (A) 0.66?C/(Y+M) and (B) 530?Y+M+C?600, wherein in the conditions (A) and (B): Y, M and C are drop amounts (ng) of the yellow dye, the magenta dye and the cyan dye dropped in a 25.4 mm×25.4 mm area of the recording medium, respectively.

Abstract: A liquid discharge recording apparatus includes a first liquid containing first 1,2-alkanediol; a liquid discharge head configured to discharge the first liquid; a second liquid containing second 1,2-alkanediol of which vapor pressure is lower than that of the first 1,2-alkanediol; and an absorber which contains the second liquid and which is configured to absorb the first liquid exited from the liquid discharge head.

Abstract: A fluid pressure pump motor includes a supply/discharge passage where both a hydraulic fluid pumped in to a fluid pressure pump and a hydraulic fluid discharged from the fluid pressure motor flow, and a variable valve provided in the supply/discharge passage to control the fluid path area of the supply/discharge passage. The variable valve reduces the fluid path area of the supply/discharge passage for simultaneously actuating the fluid pressure pump and the fluid pressure motor to be smaller than the fluid path area for actuating only one of the fluid pressure pump and the fluid pressure motor.

Abstract: An ink-jet recording apparatus performing recording on a recording medium includes: a water-based yellow ink containing a yellow dye, a water-based magenta ink containing a magenta dye and a water-based cyan ink containing a cyan dye of which hue angles ?H° defined in a CIELAB color space are within the predetermined ranges; an ink-jet head configured to discharge the water-based yellow, magenta and cyan inks; and a controller configured to control the ink-jet head so as to satisfy the following conditions (A) and (B) to thereby form a composite black on the recording medium: (A) 0.66?C/(Y+M) and (B) 530?Y+M+C?600, wherein in the conditions (A) and (B): Y, M and C are drop amounts (ng) of the yellow dye, the magenta dye and the cyan dye dropped in a 25.4 mm×25.4 mm area of the recording medium, respectively.

Abstract: A liquid discharge recording apparatus includes a first liquid containing first 1,2-alkanediol; a liquid discharge head configured to discharge the first liquid; a second liquid containing second 1,2-alkanediol of which vapor pressure is lower than that of the first 1,2-alkanediol; and an absorber which contains the second liquid and which is configured to absorb the first liquid exited from the liquid discharge head.

Abstract: A liquid discharge recording apparatus includes: a first liquid containing 2-pyrrolidone; a liquid discharge head configured to discharge the first liquid; a second liquid containing a solvent of which freezing point is less than 20 degrees Celsius and of which specific gravity is less than 1.12 g/cm3; and an absorber which contains the second liquid and which is configured to absorb the first liquid exited from the liquid discharge head.

Abstract: A fluid pressure drive unit is to supply a working fluid to and drive a fluid pressure actuator. The fluid pressure drive unit includes a fluid pressure pump for suctioning and discharging the working fluid, an electric motor arranged in parallel to the fluid pressure pump, the electric motor for driving and rotating the fluid pressure pump, and a power transmission mechanism for transmitting a power between a rotation shaft of the fluid pressure pump and a rotation shaft of the electric motor.

Abstract: A fluid pressure pump motor includes a supply/discharge passage where both a hydraulic fluid pumped in to a fluid pressure pump and a hydraulic fluid discharged from the fluid pressure motor flow, and a variable valve provided in the supply/discharge passage to control the fluid path area of the supply/discharge passage. The variable valve reduces the fluid path area of the supply/discharge passage for simultaneously actuating the fluid pressure pump and the fluid pressure motor to be smaller than the fluid path area for actuating only one of the fluid pressure pump and the fluid pressure motor.