Abstract: A room-temperature-curable organopolysiloxane composition for an oil seal, wherein an organosilane compound containing a specific organo-oxymethyl group and represented by formula (1) below and/or a partial hydrolysis condensate of said compound is used as a curing agent (crosslinking agent), and an organic compound having a guanidine skeleton is added in combination as a curing catalyst. In the formula, each R1 is independently a C1-12 unsubstituted or substituted monovalent hydrocarbon group, R2 is a C1-12 unsubstituted or substituted monovalent hydrocarbon group, Y is a hydrolyzable group, and n is 0, 1 or 2.

Abstract: An image forming apparatus includes a reverse roller pair including a drive roller and a driven roller by which a recording medium is nipped and conveyed reversibly, a motor configured to rotate the drive roller reversibly, a conveyance roller pair, a detection unit configured to detect the recording medium conveyed by the conveyance roller pair, and a controller configured to control the motor, in a case in which the recording medium is detected by the detection unit, to cause the drive roller to rotate in a first rotation direction by a first rotation amount, thereafter to cause the drive motor to rotate in a second rotation direction by a second rotation amount. A difference between the first rotation amount and the second rotation amount is set to an integer multiple of a predetermined rotation amount of the motor, the predetermined rotation amount making the drive roller one rotation.

Abstract: An image forming apparatus includes a reverse roller pair configured to reverse a conveyance direction of a recording medium between a first direction and a second direction, a first conveyance roller pair configured to convey the recording medium in the first direction, and a second conveyance roller pair configured to convey the recording medium in the second direction. A first distance is between the first conveyance roller pair and a reversal position in which a trailing edge of the recording medium is located when the conveyance direction is reversed. A second distance is between the reversal position and the second conveyance roller pair. An absolute value of a difference between the first distance and the second distance is an integer multiple of a circumferential length of a drive roller of the reverse roller pair or within a predetermined range from the integer multiple.

Abstract: A lubricant for a refrigerating machine is here disclosed which comprises a polyoxyalkylene glycidyl ether represented by the general formula ##STR1## wherein B is a residue of a compound having 2 to 8 hydroxyl groups, A.sub.1 O, A.sub.2 O and A.sub.3 O may be identical or different, each of them is an oxyalkylene group having 2 to 18 carbon atoms, R is a hydrocarbon group having 1 to 24 carbon atoms, a is an integer of from 1 to 100, b is an integer of from 1 to 100, c is an integer of from 1 to 100, l is an integer of from 1 to 8, m is an integer of from 0 to 7, n is an integer of from 0 to 7, and l+m+n is an integer of from 2 to 8.The above-mentioned lubricant is excellent in stability in the presence of a FLON refrigerant.

Abstract: A synthetic lubricating oil comprising as a base oil at least one kind of a carbonic acid ester represented by the general formula (1) ##STR1## wherein all the symbols such as X.sup.1, A.sup.1, A.sup.2, B, R.sup.

Abstract: A lubricant for a refrigerating machine is here disclosed which comprises a polyether represented by the general formula ##STR1## wherein B is a residue of a compound having 2 to 8 hydroxyl groups, A.sub.1 O and A.sub.2 O may be identical or different, each of them is an oxyalkylene group having 2 to 18 carbon atoms, X.sub.1 and X.sub.2 may be identical or different, each of them is hydrogen or a methyl group, R is hydrogen or a hydrocarbon group having 1 to 24 carbon atoms, a is an integer of from 0 to 100, b is an integer of from 1 to 100, c is an integer of from 0 to 100, d is an integer of from 0 to 100, the oxyalkylene group and the chlorine-containing group in the parentheses { } may be each combined by random copolymerization or block copolymerization, l is an integer of from 1 to 8, m is an integer of from 0 to 7, and l +m is an integer of from 2 to 8.The lubricant of the present case is particularly excellent in lubricating properties.