摘要:
The present invention relates to a novel fluorine-containing cyclic compound that is derived from a norbornadiene and hexafluoroacetone and has an oxacyclopentane structure. This compound may be represented by the following formula (1) or (2). Furthermore, the present invention relates to a fluorine-containing polymer compound prepared by a polymerization or copolymerization using this fluorine-containing cyclic compound or its derivative. By using such fluorine-containing polymer compound, it is possible to provide a superior resist material and a fine pattern forming process using the same.
摘要:
The connecting rod as a vehicle engine component is manufactured by a connecting rod fracture splitting method. The connecting rod is provided with a large end portion, a small end portion and a rod portion connecting the large and small end portions, the large end portion being provided with a connecting rod body and a cap which are split from each other along a fracture-split surface formed thereto. The connecting rod is subjected to fracture splitting by inserting a large end-side shaft into a through hole formed in the large end portion, fixing the large end-side shaft to a large end-side support, inserting a small end-side shaft into a through hole formed in the small end portion, fixing the small end-side shaft to a small end-side support, and pulling at least one of the large end-side support and small end-side support away from another one of both the supports.
摘要:
A platen unit includes a supporting member that is grounded and is made of a metal, a platen supporting member that is provided on the supporting member, includes an inner space, is formed of a conductive resin, and includes a first contact point, a platen that is provided on the platen supporting member, is formed of a conductive resin, and includes a second contact point which contacts the first contact point, and a seal member that is provided between the platen supporting member and the platen.