Abstract: There is provided an electric wire 1 comprising an electrically-conductive conductor portion and an insulating cover portion 11 covering the conductor portion. A colored marker 13 is provided on an end portion of the cover portion 11. The colored marker 13 indicates that the electric wire is a manually-incorporated wire. A circuit identifier 12 is provided on an intermediate portion of the cover portion 11. The circuit identifier 12 is made by printing or provided in the form of a mark and indicative of a connection destination of the electric wire 1. The colored marker in the end portion is made by an ink inferior to that of the circuit identifier on the intermediate portion in at least one property selected from among adhesiveness, weatherability, heat resistance, and chemical resistance.

Abstract: The present invention provides a marking ink for a covered electrical conductor utilized for a wire harness of a motor vehicle. The marking ink is printed on the covered conductor formed with polyolefin such as polyethylene and provides a high adherence (coloring), high wear resistance, high productivity, fast drying, and moderate spreading. The marking ink for the covered electrical conductor contains an acrylate resin with molecular weight of 10,500-93,000.

Abstract: The present invention is to provide a coloring ink for an electrical wire to prevent a color irregularity. A coloring ink is ejected to an outer surface of an electrical wire with a certain amount of the ink to form a mark. The coloring ink contains 100 parts by weight of an ink material, which contains a solvent, an acrylic resin, and a coloring material, and 5-15 parts by weight of an aqueous PVA solution. A concentration of the aqueous PVA solution is 10-15 %.

Abstract: An electric wire whose outer surface has a portion to be colored as required is manufactured by forming a plurality of recesses on the portion of the outer surface of the electric wire, which has a core wire and an insulating jacket that covers an entire periphery of the core wire, and then applying a coloring material to the portion of the outer surface of the electric wire. The recesses may be provided by blowing abrasive grains against the portion or by pricking the portion with one or more needles.

Abstract: An object of the present invention is to provide an apparatus and a method for injecting assuredly a given amount of a coloring agent to an outer surface of an electric wire and coloring it. An apparatus for coloring an electric wire 1 includes coloring nozzles 31. The coloring nozzles 31 each has a solenoid valve 51 to inject or stop injection of a coloring agent to an outer surface 3a of an electric wire by opening or closing the solenoid valve. A spike voltage is applied to a coil 40 of the solenoid valve 51 when the coloring agent is injected. The spike voltage is a voltage applied to the coil 40 which is necessary to open the solenoid valve 51. The spike voltage is applied to the coil 40 to open the solenoid valve 51 and stopped after a given period of time.

Abstract: A wiring harness 1 includes: an electric wire 2; and a connector 3. The electric wire 2 includes: a conductive core wire 21; and an insulating cover 22 for covering the core wire 21. The connector 3 is attached to an end 2a of the electric wire 2, and receives the end 2a of the electric wire 2. A first marker 6 and a second marker 7 are formed on an outer surface 22a of the cover 22 of the electric wire 2. The first marker 6 is formed by coloring a part of the outer surface 22a of the cover 22 of the electric wire 2 received in the connector 3 in a color A. The second marker 7 is formed by coloring a part of the outer surface 22a of the cover 22 of the electric wire 2 exposed to an outside of the connector 3.

Abstract: There is provided an electric wire 1 comprising an electrically-conductive conductor portion and an insulating cover portion 11 covering the conductor portion. A colored marker 13 is provided on an end portion of the cover portion 11. The colored marker 13 indicates that the electric wire is a manually-incorporated wire. A circuit identifier 12 is provided on an intermediate portion of the cover portion 11. The circuit identifier 12 is made by printing or provided in the form of a mark and indicative of a connection destination of the electric wire 1. The colored marker in the end portion is made by an ink inferior to that of the circuit identifier on the intermediate portion in at least one property selected from among adhesiveness, weatherability, heat resistance, and chemical resistance.

Abstract: An ink for marking which is used for marking an outer surface of an article having at least the outer surface formed of a resin and which is excellent in friction resistance and flex resistance after marking is provided. An ink for marking which contains an organic solvent, an oil-soluble dye and an oil-soluble resin, in which the oil-soluble resin has at least two types of acrylic resins mixed; in the aforementioned at least two types of acrylic resins, a total of an acid value and a hydroxyl value of at least one type of acrylic resin is 10 or less; and in the aforementioned at least two types of acrylic resins, a total of an acid value and an hydroxyl value of the other at least one type of resin is 70 or more.

Abstract: A method and device for automatically marking an article are provided, by which the deterioration in the yield can be prevented from occurring and a color of a mark to be formed on the article can be easily changed. A device 1 for automatically marking an electric wire as a device for automatically marking an article marks an outer surface 3a of an electric wire 3. The device 1 includes first and second spouting means 311, 321, encoder 33 and control device 34. The first spouting means 311 spouts a specific amount of a first coloring agent toward the outer surface 3a of the electric wire 3. The second spouting means 312 spouts a specific amount of a second coloring agent toward the outer surface 3a of the electric wire 3. The encoder 33 detects a transfer speed of the electric wire 2 which is transferred in a direction of arrow K.

Abstract: A coloring apparatus for coloring an electric wire colors the wire spouts a liquid coloring agent, including a coloring material and a solvent, toward an outer surface of the wire with a specific amount thereof at a time. The coloring apparatus includes a coloring agent supply source for receiving the coloring agent, a coloring nozzle and a heater. The coloring nozzle spouts the coloring agent of the coloring agent supply source. The heater includes a heating bath and a hot air inlet. The heating bath receives the coloring nozzle. The heating bath allows the coloring nozzle to spout the coloring agent. The hot air inlet supplies hot air into the heating bath to heat the coloring agent supply source. The heater heats the coloring agent to a range lower than a boiling point of the solvent by the hot air inlet supplying the hot air into the heating bath.

Abstract: A coloring apparatus 1 includes a coloring nozzle 31 for spouting a coloring material, a signal generator 53, and a controller 19. The coloring nozzle 31 includes an electromagnetic valve 51. The signal generator 53 outputs signals for spouting the coloring material from the coloring nozzle 31 to both a CPU 62 of the controller 19 and a driving circuit 64. The CPU 62 outputs a signal for keeping the electromagnetic valve 51 open to the driving circuit 64 when a frequency of the signals from the signal generator 53 is higher than a specific frequency. When at least one of the signals from the CPU 62 and the signal generator 53 is inputted, the driving circuit 64 applies a spike voltage A and then applies a hold voltage B to a coil 40. While at least one of the signals from the CPU 62 and the signal generator 53 is inputted, the driving circuit 64 applies a spike voltage A and then continuously applies a hold voltage B to a coil 40.

Abstract: To provide a wiring harness of which electric wire is surely distinguishable by preventing a marker formed on an outer surface of a cover of the electric wire from at least partially being removed. A wiring harness 1 includes: an electric wire 2; and a connector 3. The electric wire 2 includes: a conductive core wire 21; and an insulating cover 22 for covering the core wire 21. The connector 3 is attached to an end 2a of the electric wire 2, and receives the end 2a of the electric wire 2. A first marker 6 and a second marker 7 are formed on an outer surface 22a of the cover 22 of the electric wire 2. The first marker 6 is formed by coloring a part of the outer surface 22a of the cover 22 of the electric wire 2 received in the connector 3 in a color A different from a mono color N of the outer surface 22a. The second marker 7 is formed by coloring a part of the outer surface 22a of the cover 22 of the electric wire 2 exposed to an outside of the connector 3 in the color A the same as the first marker 6.

Abstract: An electrical cable coating method provides a coating layer on an outer surface of an electrical cable which is moving along a predetermined direction. The method involves utilizing a coating liquid jet unit to jet a given amount of a coating liquid at regular intervals to provide a coating layer on the outer surface of the electrical cable, utilizing a storage device to store a pattern for depositing the coating liquid on the outer surface of the electrical cable, utilizing a detection device to determine the moving speed of the electrical cable, and utilizing a control unit to control the coating liquid jet unit to jet a coating liquid to deposit the coating liquid on the outer surface to define the pattern based on the electrical cable moving speed.

Abstract: An object of the present invention is to provide a method and an apparatus for marking an electric wire at a low cost. An apparatus 1 for marking an electric wire forms a band mark 21 on a part of an outer face 5a of the electric wire 3. The band mark 21 is formed along the entire circumference of the part of the outer face 5a of the electric wire 3. The marking apparatus 1 tightens the electric wire 3 in a state where a tensile force is applied in a longitudinal direction. The marking apparatus 1 includes a nozzle 35 for injecting coloring agent toward an uppermost position 10 of the outer face 5a of the electric wire 3. The nozzle 35 has an open end 42 which is opposed to the electric wire 3 and capable of passing the coloring agent. A straight line L extending between a center C1 of the open end 42 and a center C2 of the electric wire 3 lies along a vertical direction.

Abstract: A method and a system of manufacturing electric wires by ordering, possible to save the cost and materials, is provided. A system includes an order-receiving section, a manufacturing section and a coloring/cutting section. The order-receiving section receives orders of electric wires, and outputs a first datum of amount of electric wires DT1, informing a length of a monochromatic electric wire, and outputs a second datum of amount of electric wires DT2, informing lengths for respective colors of electric wires. The manufacturing section manufactures a monochromatic electric wire according to the first datum DT1 and conveys the electric wire to the coloring/cutting section. The coloring/cutting section colors and cuts the electric wire according to the second datum DT2.

Abstract: The present invention is to provide a coloring ink for an electrical wire to prevent a color irregularity. A coloring ink is ejected to an outer surface of an electrical wire with a certain amount of the ink to form a mark. The coloring ink contains 100 parts by weight of an ink material, which contains a solvent, an acrylic resin, and a coloring material, and 5-15 parts by weight of an aqueous PVA solution. A concentration of the aqueous PVA solution is 10-15%.

Abstract: The present invention provides a marking ink for a covered electrical conductor utilized for a wire harness of a motor vehicle. The marking ink is printed on the covered conductor formed with polyolefin such as polyethylene and provides a high adherence (coloring), high wear resistance, high productivity, fast drying, and moderate spreading. The marking ink for the covered electrical conductor contains an acrylate resin with molecular weight of 10,500-93,000.

Abstract: Covered wires easily distinguished from each other on a low cost and a method of distinguishing the covered wires are provided. The first covered wire (1) has a core (5) and a cover portion (6). An outer surface (6a) of the cover portion (6) is unicolor (P). The first mark (7) and the second mark (8) are disposed with a gap on the outer surface (6a) along lengthwise of the first covered wire (1). The first mark (7) is colored with the first color (R). The second mark (8) is colored with the first color (G). The first covered wires (1) can be distinguished by properly selecting the first color (R) and the second color (G).

Abstract: An electric wire whose outer surface has a portion to be colored as required is manufactured by forming a plurality of recesses on the portion of the outer surface of the electric wire, which has a core wire and an insulating jacket that covers an entire periphery of the core wire, and then applying a coloring material to the portion of the outer surface of the electric wire. The recesses may be provided by blowing abrasive grains against the portion or by pricking the portion with one or more needles.

Abstract: The present invention provides electrical cables that can be surely discriminated from one another, even when only a part of an outer surface of each cable is exposed. An electrical cable 1 has an electrically conductive core 5 and a sheathing layer 6 covering the core 5. The sheathing layer 6 has an outer surface 6a with a mono-color. On the outer surface 6a, a first mark 7 and a second mark 8 are provided. At an end 1a of the cable 1, the first mark 7 is provided on a first outer surface 1b while the second mark 8 is provided on a second outer surface 1c positioned oppositely to the first surface 1b of the sheathing layer 6. On the first outer surface 1b, a plurality of the first and second marks 7, 8 are provided to be alternately positioned in a longitudinal direction of the cable 1. The first mark 7 has a first color R while the second mark 8 has a second color G different from the first color R.