JPS61206288A - Flexible printed wiring substrate - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a flexible printed wiring board used as a sliding part of office equipment such as printers, copiers, and facsimile machines and as internal wiring of all electronic equipment. .

Conventional technology In recent years, with the miniaturization of electronic devices, printers, for example, are using flexible printed circuit boards (for example, polyester films sandwiched with copper foil) for wiring from print heads to control circuits, etc. etc.) have come to be used more and more. Hereinafter, conventionally employed flexible printed wiring boards will be explained using a serial printer as an example.

In FIG. 2, 1 is a print head, and a carriage 2
mounted on top. A platen 3 is rotatably supported by side plates 4 and 6 which are erected on the left and right sides and serve as the base of the structure of the mechanical parts. A carriage shaft 6 is positioned parallel to the axial direction of the platen 3 and slidably guides the carriage 2. 7 is paper, which is wound around the platen 3.

8 is a flexible printed wiring board, control circuit 9
A print command from the print head 1 is transmitted to the print head 1 via a connector 10.11.

In the configuration described above, as the carriage 2 moves in the input direction, a print command is sent to the print head 1 through the flexible printed wiring board 8, and printing is performed on the paper 7 via the ink ribbon 12. Here, as shown in FIG. 4, the flexible printed wiring board 8 has a linear shape in order to increase the number of parts from the standard length in order to reduce costs, etc., and as shown in FIG. It is common to bend the lead 2 from the wire once at the bending part 13 and wire it to the connector 1o on the control circuit board 9. In addition, the dimension l from the print head 1 to the bent portion 13 is set so that the carriage 2 contacts the left side plate 4 when it is located on the left side plate 4 side (printing start point) as shown in FIG. 3. However, it was necessary to accurately set the dimensions so as not to apply a load to the carriage 2 when the carriage 2 is positioned on the right side plate 6 as shown in FIG.

Problems to be Solved by the Invention However, when providing the bent portions 13 on such a flexible printed wiring board 8, a jig is used during the process, and each wire is positioned one by one according to the jig. , it has to be bent, is not easy, takes a lot of man-hours, and is troublesome.
Accurate bending and dimensional control were not possible.

For this reason, a method of printing and displaying the folded portion 13 can be considered, but it requires post-processing, which increases the number of man-hours9, leading to an increase in cost. Another possible method is to cut out a part of the outer shape of the bent portion 13 as shown in FIG.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides markings for indicating bent portions using conductive foil on a flexible printed wiring board.

Effects of the present invention Due to the above structure, it is possible to easily create a flexible printed wiring board having a bending part indication, and the bending position is made clear, so that all flexible printed wiring boards can be made uniformly. It will be possible to bend it in the same place without any jigs. As a result, the time required for bending work can be shortened and dimensional control can be stabilized.

EXAMPLE Hereinafter, an example of the present invention will be described based on the accompanying drawings. In FIG. 1, reference numeral 14 denotes the flexible printed wiring board of this embodiment, and its structure is, for example, one in which copper foil is sandwiched between polyester films. or,
A printer using this flexible printed wiring board 14 is similar to that shown in FIGS. 2 and 3.

The flexible printed wiring board 14 has at least one wiring pattern in order to display the bent portion 13 at a position of four dimensions from the print head 1, which is set so as not to restrict the left and right sliding movement of the carriage 2. A marking portion 16 having a convex shape or the like is formed integrally with the printing head 1 at a position corresponding to the dimension from the print head 1.

In the structure of the flexible printed wiring board 14 as described above, since the marking part 16 indicating the bent part 13 is formed integrally with the wiring pattern 16 formed of conductive foil, there is no need for post-processing, etc., and the manufacturing process is easy. It becomes easier. moreover,
Positioning of the bent portion 13 is easy, and jigs can be eliminated.

Effects of the Invention In the present invention, since the marking portion indicating the bent portion of the board is formed with conductive foil, post-processes such as printing to indicate the bent portion on the flexible printed circuit board are unnecessary, and flexible printed circuit boards with bent portions are not required. It becomes possible to manufacture wiring boards at low cost. Furthermore, the positioning of the bent portion is easy, and the bending work, which previously required a jig, becomes easier. Moreover, it becomes possible to realize a highly reliable flexible printed wiring board in which the position of the bent portion can be easily controlled, which has a practical value.

[Brief explanation of drawings]

Fig. 1 is a plan view of a flexible printed wiring board according to an embodiment of the present invention, Fig. 2 is an exploded perspective view of a printer using the flexible printed wiring board, Fig. 3 is a plan view of the same, Fig. 4, FIG. 6 is a plan view showing a conventional flexible printed wiring board. 13...Bending portion, 14...Flexible printed wiring board, 15...Conductor foil, 16...
...Marking department. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 3 Castle Procedures Amendment Book June 2nd, 1985

Claims (2)

[Claims] (1) A flexible printed wiring board characterized in that markings indicating bent portions of the board are formed using conductive foil. (2) The flexible printed wiring board according to claim 1, wherein the marking indicating the bent portion of the board is formed integrally with a part of the wiring pattern formed on the board.