摘要:
In the presence of an iridium compound, an imine of the following formula (1): wherein R1, R2 and R3 are each, identical to or different from one another, a hydrogen atom or a non-reactive organic group, where R1 and R2 may be combined to form a ring together with the adjacent carbon atom, is reacted with a diazoacetic acid derivative of the following formula (2): N2CHR4 (2) wherein R4 is a cyano group, an alkoxycarbonyl group, a carbamoyl group or the like, to yield an aziridine compound of the following formula (5): wherein R1, R2, R3 and R4 have the same meanings as defined above. The process can easily and efficiently produce aziridine compounds.
摘要:
An ether of the following formula (2): (wherein Ra is a hydrogen atom, a hydrocarbon group or a heterocyclic group, Rb is a hydrogen atom, a hydroxyl group or a substituted oxy group, and Rc is a hydrocarbon group or a heterocyclic group; Ra and Rc may be combined to form a ring with the adjacent carbon atom and oxygen atom) is reacted with nitrogen monoxide in the presence of a catalyst composed of an imide compound of the following formula (1): (wherein each of R1 and R2 is, identical to or different from each other, a hydrogen atom, a halogen atom, an alkyl group, an aryl group, a cycloalkyl group, a hydroxyl group, an alkoxy group, a carboxyl group, an alkoxycarbonyl group, or an acyl group; R1 and R2 may be combined to form a double bond, or an aromatic or nonaromatic ring; X is an oxygen atom or a hydroxyl group; and one or two N-substituted cyclic imido groups indicated in the formula (1) may further be formed on R1, R2, or on the double bond or aromatic or nonaromatic ring formed together by R1 and R2) to give an aldehyde of the following formula (3): Ra—CHO (3) (wherein Ra has the same meaning as defined above).
摘要:
In the presence of a metal catalyst such as a samarium compound, an enol ester compound shown by the formula (1) is reacted with a carbonyl compound shown by the formula (3) and a cyanogenation agent to produce an .alpha.-cyanohydrin ester shown by the formula (4): ##STR1## wherein R.sup.1, R.sup.7, and R.sup.8 are the same or different from each other, each representing a non-reactive atom or a non-reactive organic group; R.sup.2, R.sup.3, and R.sup.4 are the same or different from each other, each representing a hydrogen atom or an alkyl group having 1 to 5 carbon atoms.By hydrolyzing the obtained compound, the corresponding .alpha.-hydroxy acid or a salt thereof can be obtained. According to the above processes, an .alpha.-cyanohydrin ester and an .alpha.-hydroxy acid can be obtained in high yields.
摘要:
A correction value acquisition method includes: forming parts of a test pattern and a linear scale on a medium of which a length in a predetermined direction is shorter than a length of the test pattern in the predetermined direction; detecting positions of the scales of the linear scale from image data obtained by reading the test pattern and the linear scale; obtaining a read density of the image data; and calculating a correction value based on the read density.
摘要:
A transport amount correcting method, including; (A) storing in a memory, in regard to a medium of a predetermined size, correction values associated with relative positions of the medium and a head; and (B) when carrying out recording on the medium of the predetermined size, transporting the medium while correcting a target transport amount using a correction value associated with a relative position of the medium and the head, and when carrying out recording on a medium larger than the predetermined size, transporting the medium while correcting the target transport amount by using a portion of the correction values a plurality of times, the portion of the correction values being a portion of the correction values among the correction values used when the medium of the predetermined size is being transported by both an upstream side roller and a downstream side roller.
摘要:
Disclosed is an oxetane-containing vinyl ether compound including one or more aromatic or non-aromatic carbocycles and/or two or more vinyl ether structures, such as a compound of Formula: wherein Ring Z1 is non-aromatic carbocycle; Ra is vinyl group of Formula: wherein each of R1, R2, and R3 is hydrogen or C1-C4 alkyl; Wa is single bond or organic group having a valence of (m+1); X1 is, for example, hydrocarbon; “m” and “q” are each 1 or 2; and “p” is 0 to 5. Also disclosed is an alicyclic epoxy-containing vinyl ether compound of Formula: wherein Ring Z2 is non-aromatic carbocycle; Rb is vinyl group of Formula: wherein R4, R5 and R6 are each hydrogen or C1-C4 alkyl; Wb is single bond or organic group having a valence of (r+1); Rc and Rd are hydrogen or alkyl; and “r” and “s” are 1 or 2.
摘要:
A printing method includes by printing a first area in a test pattern using a first print mode, determining a first correction value corresponding to the first print mode for each of the row regions, based on a density measurement value for each of row regions in the first area, by printing a second area in the test pattern using a second print mode for a plurality of cycles of periods that is determined by a combination of the row region and the nozzle, determining a second correction value corresponding to the second print mode for each of the row regions, based on a density measurement value for each of the row regions in the second area, and in a coexistent segment in which certain row regions and other row regions are mixed, correcting an ink ejection amount in each of the row regions using a combined correction value that is obtained as a composition of the first correction value and the second correction value.
摘要:
The invention is a transport method that transports a medium by causing a transport roller to rotate based on a corrected target transport amount, after correcting the target transport amount that is targeted based on a correction value and includes: printing a first pattern on a medium, printing a second pattern after the medium has been transported by causing the transport roller to rotate by a rotation amount of less than one rotation from a rotation position of the transport roller at a time of printing the first pattern, printing a third pattern after the medium has been transported by causing the transport roller to rotate by a rotation amount of one rotation from a rotation position of the transport roller at a time of printing the first pattern, printing a fourth pattern after the medium has been transported by causing the transport roller to rotate by a rotation amount of one rotation from a rotation position of the transport roller at a time of printing the second pattern, calculating a first correction value based on the first pattern and the third pattern, calculating a second correction value based on the second pattern and the fourth pattern, transporting the medium by correcting the target transport amount based on the first correction value or the second correction value depending on the relative position of the medium with respect to the transport roller.
摘要:
A liquid ejecting apparatus has a head, a transport mechanism, a memory, and a controller. The head ejects a liquid. The transport mechanism transports a medium in a transport direction with respect to the head in accordance with a target transport amount that is targeted. The memory stores a plurality of correction values, each of the correction values being associated with a relative position between the head and the medium, a range of the relative position to which that correction value is to be applied being associated with that correction value. In the case where a transport using the target transport amount is performed beyond the range of the relative position associated with the correction value that is associated with the relative position before the transport, the controller corrects the target transport amount based on the correction value associated with the relative position before the transport and the correction value associated with the relative position after the transport.
摘要:
A liquid ejection apparatus includes an ejecting section, an upstream-side transport roller, a downstream-side transport roller, and a control section. The ejecting section ejects liquid onto a medium. The upstream-side transport roller is positioned closer to an upstream side than the ejecting section in a transport direction of the medium, and the downstream-side transport roller is positioned closer to a downstream side than the ejecting section. The upstream-side transport roller and the downstream-side transport roller transport the medium in cooperation with each other by rotating. The control section forms a first pattern by causing the ejecting section to eject the liquid onto the medium in case that an upstream-side end section of the medium in the transport direction is sandwiched with a sandwich section of the upstream-side transport roller. Besides, the control section causes the upstream-side transport roller and the downstream-side transport roller to transport the medium until the upstream-side end section of the medium on which the first pattern is formed becomes positioned closer to the downstream side than the sandwich section in the transport direction and ceases to be sandwiched with the sandwich section, and forms a second pattern by causing the ejecting section to eject the liquid onto the medium the upstream-side end section of which is not sandwiched with the sandwich section.