JPH04184779A - Tape cartridge - Google Patents

Abstract

PURPOSE:To eliminate deviation of a boundary line seemingly and then enable finishing stage of a tape cartridge to be improved by providing a printing part with a plane-shaped spread in a state for surrounding a window plate at a main surface wall around the window plate and then positioning an inner periphery of the printing part onto a plate surface toward an inside of the window from the periphery line of the window plate. CONSTITUTION:A printing part 12 with a plane-shaped spread in a state for surrounding a window plate 6 is provided on a main surface wall 5 around the window plate 6, an inner periphery 13 of the printing part 12 is positioned on the plate surface toward an inside of the window from the periphery line of the window plate 6, and then a boundary line S between the window plate 6 and a main body case 1 is screened by the printing part 12. In this case, the printing part 12 can be formed with a room for horizontal and vertical printing deviation, at the same time the boundary line S between the window plate 6 and the window case 1 is screened by the printing part 12, and then an apparent boundary line is printed and formed on a surface of the window plate 6, thus eliminating deviation of the boundary line seemingly and enabling finishing state of a tape cartridge to be improved.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is directed to a tape cartridge in which a main body case is provided with a transparent window plate, and the window plate is formed by a two-color molding method. This is an improved printing form for the planar printing part applied along the periphery of the window panel.

[Conventional technology]

When forming the main body case with opaque plastic material,
A transparent window plate is provided on the case wall so that the amount of tape wrapped can be visually confirmed. However, it is known that this type of window plate can be integrally molded with the main case using a two-color molding method, for example, as disclosed in Japanese Patent Application Laid-Open No. 1-7
This method is known from Japanese Patent No. 2378. In addition, it has been widely practiced to temporarily print on the main body case or window to display tape specifications or product names, or to color specific areas on a planar basis due to design requirements (Unexamined Japanese Patent Publication No. Showa 62
-189686).

[Problem to be solved by the invention]

Printing on the surface of a three-dimensional object such as a tape cartridge is often performed by silk screen printing, but the positional accuracy of printed characters, colored parts, etc. is not very high.

Therefore, in the case of partial printing of characters, symbols, marks, etc., a good finish can be obtained by securing some extra space around them; Misalignment is likely to occur when coloring. In particular, when the boundary line has anisotropy on the case surface, that is, when the boundary line is formed by two or more straight lines or curves, there is a risk of vertical and horizontal deviations, making it difficult to obtain high positional accuracy. It becomes difficult.

When forming the window panel using the two-color molding method, compatible plastic materials are selected as the molding materials for the main case and the window panel to increase the bonding strength between the window and the main case. In such tape cartridges, it is inevitable that the boundary line between the window plate and the main body case will melt and become distorted irregularly during secondary molding.

Therefore, when performing area printing (hereinafter referred to as solid printing) around the window panel, it is necessary to make sure that the border line formed by printing matches the border line of the window panel, or to adjust the interval between the image border lines. It has been difficult to obtain a good finish due to the limitations of positional accuracy in printing as described above.

An object of the present invention is to eliminate the apparent deviation of the boundary line as described above when performing solid printing on the case surface surrounding the window plate, and to improve the finished state of the tape cartridge.

[Means to solve the problem]

The present invention provides a tape cartridge in which a transparent window plate 6 is formed integrally with the main wall 5 of an opaque main body case 1 by a two-color molding method, and the main wall 5 around the window plate 6 has the following features: A printed part 12 having a planar expansion is provided surrounding the window board 6, and the inner edge 13 of the printed part 12 is positioned on the board surface inward of the window from the peripheral line of the window board 6. The requirement is that the boundary line S between the plate 6 and the main body case 1 is hidden by the printing section 12.

Here, the state in which the window panel 6 is surrounded includes both a case in which the periphery of the window panel 6 is surrounded in an endless manner and a case in which a part or most of the periphery is surrounded. means the above-mentioned solid printed area, excluding characters, symbols, etc.

[Effect]

The reason why the inner edge 13 of the printing section 12 is located on the board surface on the inside of the window from the peripheral edge line of the window panel 6 is to secure an inner extra space for the printing section 12 on the side of the window panel 6 during printing. In order to absorb misalignment during printing that is difficult to avoid, the printing section 1
This is because the printing section 12 can clearly form an apparent boundary line by concealing it with the printing section 2.

〔Effect of the invention〕

In the present invention, since the printed part 12 is formed on the opaque case surface surrounding the window plate 6, the inner edge 13 of the printed part 12 is positioned inward of the window from the peripheral line of the window plate 6.
The printed portion 12 can be formed with sufficient margin for vertical and horizontal printing misalignment, and at the same time, the boundary line S between the window panel 6 and the main body case 1 is hidden by the printed portion I2, thereby creating an apparent boundary on the surface of the window panel 6. Lines can be printed. Therefore, printing defects caused by misalignment during printing or irregular distortion of the boundary line S between the window plate 6 and the main body case 1 can be eliminated, and the apparent deviation of the boundary line can be eliminated, improving the finish of the tape cartridge. You can improve your condition. Reduced yield due to printing defects can also be eliminated.

〔Example〕

The drawings show an embodiment in which the present invention is applied to a tape cartridge for DAT.

In FIG. 2, the tape cartridge is located on the left and right inside the main body case 1, which is formed by joining the upper and lower halves in a lid-like manner.
Hubs 3 around which the tape 2 is wound are arranged rotatably, and the front and upper surfaces of the tape pull-out path at the front end of the case are covered with a front lid 4 that can be opened upward.

The upper half Ia constituting the main body case 1 is primarily molded from an opaque plastic material, and a transparent window plate 6 is formed on the main wall 5 by secondary molding.

That is, the window plate 6 is integrally formed with the upper half 1a by a two-color molding method. This window plate 6 is formed into an elongated oval shape in the left and right directions, corresponding to the accommodation positions of the left and right hubs 3, 3. On the inner surface of the central portion of the window plate 6, an indicator 7 serving as a guide for the tape winding amount and an arrow 8 indicating the tape running direction are formed as a translucent pattern. Adjacent to the front straight peripheral edge of the window plate 6, a recess 9 is formed for pasting a title label.

On the main wall 5 of the upper half la, a character display 11 for displaying tape specifications, model number, etc., and a printing section 12 for the purpose of improving aesthetics are made of silk in a color different from the color of the material of the upper half la. Printed by screen printing method. Only the printed portion 12 is shown by pointillism.

The printed portion 12 is formed to surround the window plate 6 and span the entire width of the upper half 1a in the left and right direction. When forming the printed portion 12 by printing, as shown in FIG. 1, the inner edge 13 is positioned on the plate surface on the inside of the window from the peripheral line of the window plate 60. In other words, the inner edge shape of the printed portion 12 is printed to be similar to the designed peripheral edge shape of the window plate 6, and the apparent boundary line S between the window plate 6 and the printed portion 12 is It is positioned on the surface of the window plate 6. At this time, the dimensional difference E between the peripheral edge shape and the inner edge shape of the printed part 12 is 0.2 to 0.
．． Let it be 3n.

By providing a margin 14 defined by the dimensional difference E,
Even if there is a variation in the printing position of the printing section 12, this positional shift can be absorbed by the margin section 14, so that the inner edge 13 can always be positioned on the surface of the window panel 6. This means that
This means that the boundary '41AS between the window plate 6 and the upper half 1a, which tends to be irregularly distorted, is hidden by the printed part 12 and becomes almost invisible, and furthermore, ignoring the existence of the boundary line S, This means that an extra space inside the printing section 12 can be secured on the side of the window plate 6 during printing.

The window board 6 is slightly recessed from the main wall 5 in order to avoid scratches on the front panel. Therefore, a step 15 is formed between the window plate 6 and the upper half 1a.
Since the height of 0.1 m is small, the printing section 12 is not divided by this, and the margin section 14 is continuous with the printing layer on the main wall 5 side via the printing layer of the stepped section 15. There is.

[Another embodiment example]

The present invention can also be applied to a Phillips type or video tape cartridge, and in this case, the outer surface of the window plate 6 and the outer surface of the main wall 5 may be located on the same plane. Printing section 1
Printing in step 2 may be performed by pad printing.

[Brief explanation of drawings]

The drawings show an embodiment of the tape cartridge according to the present invention, and FIG. 1 is a cross-sectional view taken along the line A--A in FIG. 2, and FIG. 2 is a plan view of the whole. 1...Body case, 5...Main wall, 6...Window plate, 12...Printed section, 13...Inner edge of printed section, S... ·border. Figure 1 Figure 2

Claims (1)

[Claims] 1. A transparent window plate (6) is formed integrally with the main body case (1) by a two-color molding method on the main wall (5) of the opaque main body case (1), and the window plate A printing section (12) with a planar expansion is provided on the main wall (5) surrounding the window panel (6), and the inner edge (13) of the printing section (12) is The printing part (12) is located on the board surface inward of the window from the periphery of the window board (6) and hides the boundary line (S) between the window board (6) and the main case (1). tape cartridge.