Abstract: A drum/belt drive starting procedure simultaneous starts the rotation of photosensitive drums and the conveyance of a belt. A drum/belt driving time calculating procedure sets a rotational drive stop time of each photosensitive drum and a conveyance drive stop time of the conveying belt on the basis of a detection result of a reference mark detecting unit. A drum/belt drive stopping procedure stops the rotation of each photosensitive drum and the conveyance of the conveying belt on the basis of a calculation result of the drum/belt driving time calculating procedure. Rotational phase differences of every plural photosensitive drums are set to a predetermined value in the state where rubbing with the belt is small.

Abstract: The present invention provides a dielectric ceramic composition comprising: 30 to 90% by weight of a crystallized glass powder capable of depositing a diopside crystal, 1 to 40% by weight of a calcium titanate powder, a strontium titanate powder or a mixed powder thereof, and 0 to 60% by weight of at least one kind of a powder selected from the group consisting of Al2O3, TiO2, ZrO2, MgTiO3, BaTi4O9, La2Ti2O7, Nd2Ti2O7, Ca2Nb2O7, SrZrO3 and CaZrO3, and a dielectric ceramics obtained by firing the same.

Abstract: A work measurement apparatus 1 comprises a base 2 and a conveyor table 3 which is sidably disposed on the base 2 and includes a work receiving opening 6. A guide plate 4 is fixedly disposed on the conveyor table 3. A guide entrance 5 is disposed in the guide plate 4 at the upper end of the work receiving opening 6. A measurement probe 8 is disposed on the upper side of the guide plate 4. The measurement probe 8 is urged towards the work W in the work receiving opening 6. The measurement probe 8 slides on the guide plate 4 as the conveyor table 3 is rotated. The measurement probe 8 is then directed by the guide entrance 5 to the work W in the work receiving opening 6 and makes contact with the work W. The measurement probe 8 exits from the guide entrance 5.

Abstract: A work inspection system 2 includes: a conveyor table 7 vertically positioned, and conveying works W stored in work-storing pockets 9; a work inspection apparatus for inspecting the works stored in the work-storing pockets 9 of the conveyor table 7; and a sorting and ejecting apparatus 12 for sorting the inspected works stored in the work-storing pockets of the conveyor table in accordance with a property of the works and ejecting the same. The work-storing pockets 9 of the conveyor table 7 are positioned inside the periphery 7a of the conveyor table 7 to surround the works W. The work-storing pockets 9 are disposed along two concentric circles on the conveyor table 7.

Abstract: A vacuum suction system comprises a work conveyor table 2 having work receiving openings 5, and a table base 3 having vacuum suction channels 7 which communicate with the work receiving openings 5 of the conveyor table 2. The work receiving openings 5 and the vacuum suction channels 7 communicate with a vacuum generation source 17 via a vacuum pipe 9. A negative pressure sensor 10 is disposed on the vacuum pipe 9. Based on a signal from the negative pressure sensor 10, a compressed air generation source 20 supplies a compressed air to the vacuum pipe 9 and thereby stabilizes the vacuum level in the vacuum pipe 9.

Abstract: A work transfer apparatus includes a turn table with a plurality of work-storing pockets for storing works at the outer periphery of the turn table and a base slidably supporting the works stored in the work-storing pockets of the turn table. A probing detector is provided in the base, and the probing detector comes in contact with the works in the work-storing pockets. An entire portion of the base which comes in contact with the works is made of insulant material.

Abstract: The present invention provides a dielectric ceramic composition comprising: 30 to 90% by weight of a crystallized glass powder capable of depositing a diopside crystal, 1 to 40% by weight of a calcium titanate powder, a strontium titanate powder or a mixed powder thereof, and 0 to 60% by weight of at least one kind of a powder selected from the group consisting of Al2O3, TiO2, ZrO2, MgTiO3, BaTi4O9, La2Ti2O7, Nd2Ti2O7, Ca2Nb2O7, SrZrO3 and CaZrO3, and a dielectric ceramics obtained by firing the same.

Abstract: A work transfer apparatus 1 includes a turn table 3 with a plurality of work-storing pockets 2 for storing works W at the outer periphery of the turn table and a base 4 slidably supporting the works W stored in the work-storing pockets 2 of the turn table 3. A probing detector 6 is provided in the base 4, and the probing detector 6 comes in contact with the works W in the work-storing pockets 2. An entire portion of the base 4 which comes in contact with the works W is made of insulant material 5.