JP2001188154A - Printing method of identification information of optical fiber code - Google Patents

Abstract

(57) [Summary] [Problem] The positional relationship between an identification number and a color code of an optical fiber code in which a core number and a color code are used together to facilitate identification work of the optical fiber code is shifted. An object of the present invention is to control a print interval of an identification number in response to a slip of a print roll of a color code with respect to an optical fiber code in order to prevent the occurrence of the optical code. A print roller (10) is provided on the surface of an optical fiber cord (1).
In the method of printing the identification information of the optical fiber code 1 for printing the color code 3 by the printer and the identification number 2 by the printer at a predetermined interval, the rotation speed of the printing roll 10 is measured,
Comparing the printing roll peripheral speed V with the linear speed v of the optical fiber cord, a delay of the printing roll peripheral speed V with respect to the linear speed v is calculated, and a delay signal corresponding to the delay of the printing roll peripheral speed with respect to the linear speed is calculated. The method of printing the identification information of the optical fiber code in which the printing timing of the identification number 2 is delayed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for printing identification information of an optical fiber code constituting a cable or a jumper unit used in an intra-office wiring system. In the case of using a cord number and a color code together to control the cord number display position, the position of the cord number display with respect to the color code display can be easily and easily controlled to be constant. It is.

[0002]

2. Description of the Related Art An optical fiber cord and a jumper unit of an intra-office wiring system are composed of a plurality of optical fiber cords for one element. Identification codes are printed at regular intervals on the surface of the optical fiber cord for identifying objects. An identification number is generally used as the identification code. Since the identification number is an individual number for an infinite number of optical fiber codes, the number of digits of the identification number is extremely large, and since the identification number is printed on a fine optical fiber code surface, the identification number is extremely small. For this reason, various methods have been devised for notation of identification numbers so that a target optical fiber code can be quickly and accurately identified from countless optical fiber codes. One of them is to classify optical fiber codes into specific categories, and to indicate this classification by printing color.However, printing rolls must be used for each combination of identification number and printing color. The work is cumbersome and unrealistic. Another method is to use this color code in combination with an identification number (
Not known). This notation is shown in FIG.
In this example, a color code (blue, yellow, green, red, purple, orange, gray) 3 and an identification number 2 are alternately printed on the surface of an optical fiber code 1. Color code 3 is blue,
Since the specific category of the optical fiber code is displayed by color coding such as yellow, green, red, purple, orange, gray, etc., the identification target by the identification number of the target optical fiber code can be narrowed down with this color code. . Therefore, the target optical fiber code may be identified by the identification number from the range narrowed down by the color code display,
Therefore, the identification work is performed quickly, and the identification accuracy is increased.

On the surface of an optical fiber cord, a color code (blue, yellow, green, red, purple, orange, gray) 3 and an identification number 2 are provided.
FIG. 3 shows an outline of a printing method for alternately printing a print roll 10 and a print roll 10 for printing a color code 3 and an inkjet printer 20 for printing an identification number between a sending roll 11 and a take-up roll 12. A color code is printed at regular intervals on the optical fiber cord 1 traveling at a constant speed between the sending roll 11 and the take-up roll 12, and an identification number is printed at regular time intervals. . Since the identification number is printed by the inkjet printer 20, there is an advantage that the identification number can be easily changed regardless of the color type of the color code. However, the printing interval of the color code 3 is determined by the printing roll, and the printing interval of the identification number 2 is the linear velocity v of the optical fiber code 1.
(Running speed) is assumed to be constant, and is determined at fixed time intervals. Therefore, as long as the linear velocity v is constant, the printing interval of the identification number does not change. Although the linear velocity of the optical fiber code changes slightly, the printing time interval of the identification number is made to respond to the variation of the linear velocity v of the optical fiber code so that the printing interval is constant regardless of the variation of the optical fiber code linear velocity. Can be controlled.

However, since the print roll 10 slips slightly with respect to the optical fiber code 1, its peripheral speed is delayed by this slip, and therefore, the printing interval of the color code is shifted by this slip. On the other hand, since the identification numbers are printed at regular intervals, the positional relationship between the identification numbers and the color codes slightly shifts. The shift in the positional relationship between the color code and the identification number due to the shift in the printing interval of the color code due to the slip is gradually accumulated as the printing on the optical fiber code is repeated. The code will be overprinted. Therefore, in order to keep the distance between the identification number and the color code constant, it is necessary to respond the printing position of the identification number to the deviation of the printing position of the color code due to the slip of the printing roll with respect to the optical fiber code.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to prevent a positional relationship between a color code and an identification number from being shifted, and to respond to a slip of a printing roll of a color code with respect to an optical fiber code, thereby to identify the identification number. It is an object to control a printing interval.

[0006]

Means taken to solve the above problem are constituted by the following (a) and (b). (B) measuring the rotation speed of the printing roll, comparing the circumferential speed of the printing roll with the linear speed of the optical fiber cord, and calculating the delay of the circumferential speed of the printing roll with respect to the linear speed; The printing timing of the identification number is delayed by a delay signal corresponding to a delay of the roll peripheral speed from the linear speed.

[0007]

When the linear velocity is assumed to be constant, the printing position of the color code shifts backward by the amount of slip of the printing roll relative to the optical fiber code. By comparing the linear velocity of the fiber cord with the linear velocity of the fiber cord, a slip of the print roll with respect to the optical fiber cord is calculated. Since the printing timing of the identification number is set to the time interval at which the optical fiber code runs for a predetermined printing interval at a predetermined linear velocity, it depends on the above-mentioned slip ratio (the above-mentioned slip ratio relative to a reference linear speed). The delay signal is supplied to the print control device, and the print timing is delayed by that amount. As a result, the printing position of the identification number is shifted by the shift amount of the printing position of the color code due to the slip of the printing roll. Therefore, the printing position of the identification number with respect to the printing position of the color code is accurately controlled, and the interval between the color code and the identification number is kept constant regardless of the magnitude of the slip of the printing roll with respect to the optical fiber code.

[0008]

Next, an embodiment will be described with reference to the drawings.
The printing device shown in FIG. 1 is the same as that shown in FIG. An encoder 30 is provided on the print roll 10, and the angular velocity of the print roll 10 is constantly measured by the encoder 30. The measurement signal of the angular velocity of the printing roll is input to an arithmetic circuit of the printing control device 31. The arithmetic circuit of the printing control device calculates a speed difference between the linear speed v and the circumferential speed V of the printing roll based on the linear speed signal of the optical fiber code and the printing roll angular speed signal, and calculates the speed difference (the light of the printing roll). The printing timing of the identification number by the inkjet printer 20 is delayed by an amount corresponding to the slip amount per unit time with respect to the fiber code). The control method for delaying the printing timing of the identification number is such that when the difference between the peripheral speed of the printing roll due to slip and the linear speed of the optical fiber cord reaches a predetermined value, a delay signal of one is issued. One method is to delay the printing timing by a predetermined time determined by one delay signal.

[0009]

[Others] In the present invention, the basic data for guaranteeing the printing timing is calculated from the peripheral speed of the color code printing roll and the linear speed of the optical fiber code, but the basic data can be obtained from the printing result. . That is, the distance between the leading end of the color code and the leading end of the identification number or the distance between the trailing end of the color code and the leading end of the identification number is optically read. In this case, the read value for the interval between the rear end of the color code and the front end of the identification number is compared with a reference value, and when the error is equal to or larger than a predetermined value, a predetermined correction signal (delay signal) is issued. The correction signal may delay the print timing of the identification number by a predetermined time.

[0010]

[Effects] The present invention has produced the functions and effects as described in the above-mentioned section of operations. The effects (advantages) can be summarized as follows. The printing interval of the identification number is automatically adjusted according to the change of the printing interval of the color code due to the slip of the print roll on the optical fiber code, and the positional relationship between the color code and the identification number is kept constant,
It is possible to reliably prevent the identification number from being difficult to identify due to a shift in the interval between the color code and the identification number (overprinting in an extreme case). The print speed of the ink jet printer is controlled based on a difference between the peripheral speed and the linear speed of the print roll, and based on a speed difference between the peripheral speed and the linear speed of the print roll. A shift in the printing interval of the identification number due to the extension between the rolls is also compensated, and therefore, the positional relationship between the color code and the identification number can be kept constant regardless of the extent of the extension of the optical fiber code.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of an embodiment.

FIG. 2 is a schematic diagram of an optical fiber code in which a color code and an identification number are printed together.

FIG. 3 is a conceptual diagram of a conventional identification symbol printing system for printing a color code and an identification number.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Optical fiber code 2 ... Identification number 3 ... Color code 10 ... Printing roll 11 ... Sending roll 12 ... Winding roll 20 ... Inkjet printer 30 ... Encoder 31 ... Print control device v ... Line speed of optical fiber cord

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Etsuo Ino 1440, Mukurosaki, Sakura City, Chiba Prefecture Inside Fujikura Sakura Office (72) Inventor Keiji Ohashi 1440, Musaki, Sakura City, Chiba Prefecture F Inside Fujikura Sakura Office F Term (reference) 2C056 FB01 FB09 2H001 BB22 MM01 2H050 BD02

Claims (3)

[Claims] An optical fiber code identification information printing method for printing a color code by a printing roller and an identification number by a printer on a surface of the optical fiber code at a predetermined interval. By comparing the speed with the linear speed of the optical fiber code, a delay of the printing roll circumferential speed with respect to the above linear speed is calculated, and the printing timing of the identification number is obtained by a delay signal corresponding to the delay of the printing roll circumferential speed with respect to the above linear speed. The method of printing the identification information of the optical fiber code for delaying. 2. The method according to claim 1, wherein the identification number is printed by an ink jet printer. 3. The method according to claim 1, wherein the rotation speed of the print roll is measured by an encoder.