Abstract: Provided according to the present invention are an adamantyl (meth)acrylate represented by formula (1), having a formazin standard turbidity of less than 1.7 NTU (Nephelometric Turbidity Unit) in methylethylketone or tetrahydrofuran, and also a (meth)acrylic copolymer comprising the adamantyl (meth)acrylate as a repeating unit: (in the formula, R1 represents hydrogen or a methyl group; R2 through R4 each independently represent a hydrogen atom, a hydroxyl group, an alkyl group having a carbon number of 1 to 3, an aryl group, an alkoxy group, an aryloxy group, a halogen group, an alkyl halide group, or a hydroxyalkyl group; and n1 represents 0 or 1).

Abstract: A sewing machine capable of mode switching between a normal sewing mode and a free motion sewing mode including a feed dog switcher that switches a feed dog between an active state in which the feed dog is moved above and below a needle plate and an inactive state in which the feed dog is lowered below the needle plate, a first instruction issuer that instructs execution of fastening stitching at a beginning of pattern sewing sequence, a second instruction issuer that instructs execution of fastening stitching at an end of pattern sewing sequence, and a controller that, when in the free motion sewing mode, activates the feed dog by the feed dog switcher in response to an incoming instruction signal from the first or the second instruction issuer to execute fastening stitching through control of feed dog based on fastening stitching data to longitudinally feed a workpiece cloth.

Abstract: A sewing machine that sews a work cloth being moved by a user includes a detection device that detects the work cloth, a movement calculation device that calculates movement data of the work cloth, a movement data storage device that stores the movement data, a movement data creation device that causes the detection device and the movement calculation device to respectively detect the work cloth and calculate the movement data for each stitch, and that stores the movement data into the movement data storage device, a line segment specification device that specifies a line segment based on the movement data, a determination device that determines whether a stitch to be formed next will overlap with an already formed stitch corresponding to the specified line segment, and an error control device that performs an error correction operation based on a determination result.

Abstract: A sewing machine for a user to perform sewing while moving a work cloth includes: a detecting device that detects the work cloth; a movement calculating device that calculates, by two-dimensional coordinate data, a movement direction and a movement quantity of the work cloth between previous detection and current detection of the work cloth when the work cloth is detected; a movement data storage device that stores movement data serving as two-dimensional coordinate data indicative of the movement direction and the movement quantity; a movement data creating device that detects the work cloth on a one by one needle basis of sewing, calculates the movement data, and stores the calculated data in the movement data storage device; a cloth feed mechanism that moves the work cloth; and a reproduction sewing control device that performs sewing while moving the work cloth based on the movement data stored in the movement data storage device.

Abstract: A sewing machine including a needle bar; a sewing needle attached to the lower end of the needle bar; a needle bar drive mechanism vertically driving the needle bar; a presser foot capable of applying releasable pressure on a workpiece cloth and that releases the pressure to allow manual movement and sewing of the workpiece cloth; a regulatory needle including a tip and being capable of assuming a pierced state where the tip is pierced through the workpiece cloth and a non-pierced state, wherein the regulatory needle is moved along with the workpiece cloth while retaining the pierced state of the tip; a regulatory needle drive unit vertically driving the regulatory needle between the pierced state and the non-pierced state in coordination with vertical movement of the sewing needle; and a regulatory needle regulator limiting horizontal movement of the regulatory needle so as not to exceed a predetermined stitch pitch.

Abstract: A sewing machine that enables a user to perform sewing while moving a piece of work cloth, the sewing machine including: a main shaft that drives a needle bar equipped with a sewing needle, a sewing machine motor that rotary-drives the main shaft, a detection device that detects an actual movement distance of the piece of work cloth, a target pitch storage device that stores a predetermined length as a target pitch, which is a target value of stitch pitches of the piece of work cloth, an agreement degree calculation device that calculates an agreement degree between the target pitch and a stitch pitch in actual sewing that is to be determined based on the actual movement distance of the piece of work cloth which is detected by the detection device; and a notification device that notifies of the agreement degree calculated by the agreement degree calculation device.

Abstract: A sewing machine includes a control portion that controls a thread tension adjustment portion and a feed portion such that a first stitch and a second stitch are formed alternately on a sewing object. The first stitch includes only a stitch in which an interlacing point of the upper thread and a bobbin thread is lower than a top surface of the sewing object. The second stitch includes at least one set of a first section and a second section. The first section is a section in which the interlacing point and the bobbin thread are pulled out, by the thread tension, in the first direction on the top surface of the sewing object. The second section is a section in which the bobbin thread is pulled out in the second direction, and at least part of the second section overlapping with the first section.

Abstract: A sewing machine capable of sewing a manually moved workpiece cloth in free motion includes a carrier that carries the workpiece cloth and being manually moved to move the workpiece cloth; a support element that movably supports the carrier; a movement amount detector that detects an amount of carrier movement; a specifier that specifies a stitch pitch; a comparator that produces a comparison of the amount of carrier movement with the stitch pitch; a regulator provided at the support element and that regulates carrier movement; and a controller that controls the regulator such that the amount of carrier movement does not exceed the stitch pitch based on the comparison produced by the comparator.

Abstract: A sewing machine including a needle bar that has a sewing needle attached in a lower end thereof; a needle-bar vertical drive mechanism that vertically moves the needle bar by a sewing machine motor via a sewing machine motor main shaft; an imaging unit that captures image of at least the sewing needle and a moving object that is in close proximity of the sewing needle; a distance calculating portion that calculates a distance between the sewing needle and the moving object based on image data captured by the imaging unit; a judging portion that makes a judgment that the distance calculated by the distance calculating portion is equal to or less than a predetermined distance; and a control portion that controls execution of a predetermined safety operation based on a judgment result of the judging portion.

Abstract: A sewing machine includes a needle bar that is equipped with a sewing needle at a lower end of the needle bar, a presser bar that is equipped with a presser foot at a lower end of the presser bar, which holds down a work cloth, a sewing machine motor which is a driving source that drives the needle bar in an up and down direction, and a switching device that switches between a normal mode in which the needle bar is driven in the up and down direction to form stitches and a practice mode in which the sewing machine is operated in a condition where at least the needle bar is not driven.

Abstract: A sewing machine including a needle bar; a sewing needle attached to the lower end of the needle bar; a needle bar drive mechanism vertically driving the needle bar; a presser foot capable of applying releasable pressure on a workpiece cloth and that releases the pressure to allow manual movement and sewing of the workpiece cloth; a regulatory needle including a tip and being capable of assuming a pierced state where the tip is pierced through the workpiece cloth and a non-pierced state, wherein the regulatory needle is moved along with the workpiece cloth while retaining the pierced state of the tip; a regulatory needle drive unit vertically driving the regulatory needle between the pierced state and the non-pierced state in coordination with vertical movement of the sewing needle; and a regulatory needle regulator limiting horizontal movement of the regulatory needle so as not to exceed a predetermined stitch pitch.

Abstract: A sewing machine capable of sewing a manually moved workpiece cloth in free motion includes a carrier that carries the workpiece cloth and being manually moved to move the workpiece cloth; a support element that movably supports the carrier; a movement amount detector that detects an amount of carrier movement; a specifier that specifies a stitch pitch; a comparator that produces a comparison of the amount of carrier movement with the stitch pitch; a regulator provided at the support element and that regulates carrier movement; and a controller that controls the regulator such that the amount of carrier movement does not exceed the stitch pitch based on the comparison produced by the comparator.

Abstract: It is an object of the present invention to provide a curable resin composition for a column spacer which has excellent developability and solubility and is capable of forming a clearly patterned column spacer without leaving a development residue at the time of pattern formation of the column spacer to be used in producing a liquid crystal display panel. The present invention is directed to a curable resin composition for a column spacer, which contains a compound having two or more polymerizable unsaturated bonds in a molecule, an alkali-soluble polymer compound, and a photo-reaction initiator, the compound having two or more polymerizable unsaturated bonds in a molecule being an oxide-modified compound having two or more polymerizable unsaturated bonds in a molecule.

Abstract: A sewing machine capable of mode switching between a normal sewing mode and a free motion sewing mode including a feed dog switcher that switches a feed dog between an active state in which the feed dog is moved above and below a needle plate and an inactive state in which the feed dog is lowered below the needle plate, a first instruction issuer that instructs execution of fastening stitching at a beginning of pattern sewing sequence, a second instruction issuer that instructs execution of fastening stitching at an end of pattern sewing sequence, and a controller that, when in the free motion sewing mode, activates the feed dog by the feed dog switcher in response to an incoming instruction signal from the first or the second instruction issuer to execute fastening stitching through control of feed dog based on fastening stitching data to longitudinally feed a workpiece cloth.

Abstract: A sewing machine including a main shaft; a motor driving the main shaft; a needle bar; a sewing needle attached to a lower end of the needle bar; a needle-bar drive mechanism driven by the main shaft and vertically moving the needle bar; a speed setter setting a rotational speed of the main shaft; a needle-position detector detecting a vertical position of the sewing needle or the needle bar; a main shaft speed detector; a motor controller; and a needle plate; wherein the motor controller executes at least either of a first control decelerating the main shaft below the set rotational speed when the lower end of the sewing needle is above the needle plate, or a second control accelerating the main shaft above the set speed when the lower end of the sewing needle is positioned below the needle plate based on detected results provided by the detectors.

Abstract: A sewing machine for a user to perform sewing while moving a work cloth includes: a detecting device that detects the work cloth; a movement calculating device that calculates, by two-dimensional coordinate data, a movement direction and a movement quantity of the work cloth between previous detection and current detection of the work cloth when the work cloth is detected; a movement data storage device that stores movement data serving as two-dimensional coordinate data indicative of the movement direction and the movement quantity; a movement data creating device that detects the work cloth on a one by one needle basis of sewing, calculates the movement data, and stores the calculated data in the movement data storage device; a cloth feed mechanism that moves the work cloth; and a reproduction sewing control device that performs sewing while moving the work cloth based on the movement data stored in the movement data storage device.

Abstract: A sewing machine that enables a user to perform sewing while moving a piece of work cloth, the sewing machine including: a main shaft that drives a needle bar equipped with a sewing needle, a sewing machine motor that rotary-drives the main shaft, a detection device that detects an actual movement distance of the piece of work cloth, a target pitch storage device that stores a predetermined length as a target pitch, which is a target value of stitch pitches of the piece of work cloth, an agreement degree calculation device that calculates an agreement degree between the target pitch and a stitch pitch in actual sewing that is to be determined based on the actual movement distance of the piece of work cloth which is detected by the detection device; and a notification device that notifies of the agreement degree calculated by the agreement degree calculation device.

Abstract: A sewing machine that sews a work cloth being moved by a user includes a detection device that detects the work cloth, a movement calculation device that calculates movement data of the work cloth, a movement data storage device that stores the movement data, a movement data creation device that causes the detection device and the movement calculation device to respectively detect the work cloth and calculate the movement data for each stitch, and that stores the movement data into the movement data storage device, a line segment specification device that specifies a line segment based on the movement data, a determination device that determines whether a stitch to be formed next will overlap with an already formed stitch corresponding to the specified line segment, and an error control device that performs an error correction operation based on a determination result.

Abstract: A sewing machine includes a needle bar that is equipped with a sewing needle at a lower end of the needle bar, a presser bar that is equipped with a presser foot at a lower end of the presser bar, which holds down a work cloth, a sewing machine motor which is a driving source that drives the needle bar in an up and down direction, and a switching device that switches between a normal mode in which the needle bar is driven in the up and down direction to form stitches and a practice mode in which the sewing machine is operated in a condition where at least the needle bar is not driven.

Abstract: A sewing machine including a needle bar that has a sewing needle attached in a lower end thereof; a needle-bar vertical drive mechanism that vertically moves the needle bar by a sewing machine motor via a sewing machine motor main shaft; an imaging unit that captures image of at least the sewing needle and a moving object that is in close proximity of the sewing needle; a distance calculating portion that calculates a distance between the sewing needle and the moving object based on image data captured by the imaging unit; a judging portion that makes a judgment that the distance calculated by the distance calculating portion is equal to or less than a predetermined distance; and a control portion that controls execution of a predetermined safety operation based on a judgment result of the judging portion.