JPH0312944A - Inking device and inking method - Google Patents

Abstract

PURPOSE:To prevent the amount of set ink upon printing from being increased and decreased and the ink from sagging excepting the time of the printing by providing ink sagging preventive part on the tip end of an ink reservoir part, said ink sagging preventive part forming over the internal surface thereof slidable close contact with the outer surface of a printing center core. CONSTITUTION:There is provided on the tip end of an ink reservoir part 1 5 an ink sagging preventive part 17 which forms in its internal surface a slidable close contact with the outer surface of a printing center core 14. For providing the ink sagging preventive part 17 under the ink reservoir part 15 utilizing a capillary phenomenon, the interior of the ink sagging part is taken to be a waiting position of the printing center core 14. Further, ink 11 is supplied by once raising the printing center core 14 up to the inside of the ink reservoir part 15 located above the waiting position from the same. Hereby, the ink 11 is prevented from flowing and at the time excepting the time of printing, and the amount of ink per one time is accurately set.

Description

DETAILED DESCRIPTION OF THE INVENTION [First Invention] (Field of Industrial Application) The present invention relates to an inking device and an inking method using the same.

(Prior Art) For example, a probe device is provided with an inking device that marks semiconductor chips determined to be defective after testing and measuring a large number of semiconductor chips formed on a semiconductor wafer.

FIG. 3 is a sectional view showing the configuration of main parts of a conventional inking device. In an ink accommodating portion 2 in which marking ink 1 is accommodated, a dotting core 4 that is movable forward and backward by a drive mechanism 3 is arranged. Further, a cylindrical ink reservoir 5 is connected to the lower part of the ink storage portion 2, which serves as a guide portion for the dotting core 4 and also serves as an ink supply portion to the tip of the dotting core 4. The inner diameter of this ink reservoir 5 is set such that a gap between it and the outer surface of the dotting core 4 causes a capillary phenomenon, and a predetermined amount of ink is delivered to the tip of the dotting core 4 by this capillary phenomenon. It is structured so that it accumulates.

Then, marking is performed by projecting the dot core 4 toward the workpiece 6 and transferring the ink 1a accumulated at its tip onto the workpiece 6.

(Problems to be Solved by the Invention) In the above-described inking device, the gap between the inner surface of the ink reservoir portion 5 and the outer surface of the dotting core 4 is made into a capillary state, so that the inking device is not used except when marking is performed. The surface tension of the ink 1 prevents the ink 1 from flowing out from the ink reservoir 5 toward the object to be treated 6.

However, in reality, the tip of the dotting core 4 may vary depending on the amount of ink 1 stored in the ink storage portion 2, the stopping time of the dotting core 4 in the ink reservoir 5, changes in ink viscosity, etc. Problems have occurred, such as an increase in the amount of ink that accumulates in the printing area, or even ink 1 or dripping onto the object 6 at times other than printing.

For example, marking in a probe device must be performed reliably only on a small area of a semiconductor chip that is determined to be a defective product. However, an increase in the amount of ink that collects at the tip of the dotting core 4 causes ink 1 to be transferred to a good item adjacent to a defective item, and dripping of ink 1 at times other than when dotting makes it easy to accidentally discard even good items. This results in a decrease in inspection accuracy.

The present invention has been made to address these problems, and provides an inking device that prevents the set amount of ink from increasing or decreasing during dotting, and prevents ink from dripping at times other than dotting, and an inking device using the same. The purpose is to provide a method for kings.

[Structure of the Invention] (Means for Solving the Problems) In other words, the inking device of the present invention includes an ink accommodating portion in which ink is stored and a dotting core arranged so as to be movable back and forth, and a movable dotting core. an ink reservoir section provided below the ink accommodating section along a path, and in which an ink supply path utilizing capillary action is formed in a gap with the outer surface of the dotting core; The present invention is characterized in that an ink drip prevention part is provided at the tip of the ink reservoir part, the inner surface of which forms a slidable and close contact with the outer surface of the dot core.

The inking method of the present invention also includes a step of waiting the dot core within an ink drip prevention part that forms a slidable and close contact with the outer surface of the dot dot core, and a step of waiting the dot core within the ink drip prevention part, which is arranged above the ink drip prevention part. A step of raising the dotting core into an ink reservoir using capillary phenomenon and supplying a predetermined amount of ink to the tip of the dotting core, and lowering the dotting core.
The invention is characterized in that it comprises a step of performing inking using the inking operation, and a step of raising the dot core to the standby position, and each step is repeatedly performed in accordance with the inking operation.

(Function) In the present invention, since the ink dripping prevention part is provided below the ink reservoir part that utilizes capillary phenomenon, the dotting core can be used as a standby position within this ink dripping prevention part to prevent dotting. This prevents ink from dripping at other times.

In addition, since ink is supplied from the standby position to the ink reservoir located above by raising the core for dotting points, the amount of ink supplied for one inking is also stable. .

(Example) Hereinafter, an example of an inking device of the present invention and an inking method using the same will be described with reference to the drawings.

The marking ink 1] is stored in, for example, a cylindrical container-shaped ink accommodating section 12, and this ink accommodating section]
In the center 2, a hitting point core 4 is arranged which is movable forward and backward by a driving mechanism 13, for example, a combination of a spring and an electromagnet.

Further, below the ink storage section 12, a cylindrical ink reservoir is provided along the moving path of the dotting core 14, and serves as a guide section and an ink supply section to the tip 14a of the dotting core 14. section 15 is connected. This ink reservoir 1
The gap 16 between the inner surface of the dot 5 and the outer surface of the dot core 14 is, for example, 1 m so as to form an ink supply path by capillary action.
m or less.

An ink drip prevention section 17 is provided at the lower end of the ink reservoir section 15 so as to be continuous with the ink reservoir section 15 . The ink drip prevention portion 17 is formed of, for example, a cylindrical member having an inner diameter set so as to be in close contact with the outer surface of the dot core 14 within a slidable range.

By moving the dotting core 14 up and down within the ink reservoir section 15 and the ink drip prevention section 17, the ink accumulated at the tip 14a of the dotting core 14 is injected onto the workpiece (not shown). It is configured to be king.

The operation of the inking device of this embodiment having the above configuration is described in the second example.
This will be explained with reference to the figures.

First, the tip 14a of the dotting core 14 is waiting in the ink drip prevention portion 17 at a position where it is in close contact with the inner surface of the ink drip prevention portion 17 (FIG. 3-a). This state is the initial state of the inking device of this embodiment, and is also a standby state other than during dotting operations, as will be described later.

Next, when the dot information is entered manually, the dot center core 14 is -
1. The ink reservoir section] 5 is raised until its tip 14a is located in the same figure (b), and the dotting core 4 stops at this position. By stopping in this state, the ink reservoir 15
The gap between the inner surface of the core and the outer surface of the dot core] 6], the amount of ink for one inking is created by the capillary phenomenon of 6], 1 a
is accumulated at the tip 14a of the center core 14 for hitting point.

Next, the dot core 14 descends until its tip 14a reaches the vicinity of the surface of the workpiece (not shown).
〇), Ink 1]-a, which is the amount of ink for one time, accumulated on the tip 14a is transferred, and inking is performed.

Thereafter, the dot center core 14 rises to the initial position shown in FIG. 2(a), and waits in this state until the next dot information is input.

By repeating these operations in accordance with the dot information, inking is performed sequentially.

That is, in the inking device of this embodiment, first, the ink drip prevention part 7 is provided at the lower end of the ink reservoir part 5, and the ink drip prevention part 7 is in slidable contact with the outer surface of the dotting core 14. , this ink drip prevention part] 7 has a center core 1 for dots.
By setting the state in which the tip 14a of 4 is located as the standby position, the outer surface of the dotting core 14 and the ink drip prevention part 1
The ink 11 does not flow out from the gap with the inner surface of the ink 7.

Therefore, the ink 11 is prevented from dripping onto the object to be processed except during dotting.

Also, the tip 14a of the dot core]4 in the standby state.
Since there is no ink ]-1 in this state, by raising the dot core 14 toward the ink reservoir 15 side, a constant amount of ink 1] is added to the dot core 14. This makes it possible to store the liquid at the tip 14a. Therefore, inking defects (inking outside the set range, etc.) due to an increase in the amount of ink are eliminated.

In this way, in the inking device of this embodiment,
Dripping of ink at times other than dotting can be prevented, and the amount of ink at dotting is also stabilized. Therefore, in a probe device or the like that inspects a large number of semiconductor chips formed on a semiconductor wafer, it becomes possible to reliably mark each semiconductor chip in a micro area, and prevent a drop in inspection accuracy due to marking defects. It is possible and very effective.

The inking device of the present invention and the inking method using the same are not limited to marking in a probe device, but can also be applied to various types of inking, such as a device that marks the back side of an IC product that has been packaged. It is possible to apply it to

[Effects of the Invention] As described above, according to the present invention, it is possible to prevent ink from flowing out at points other than 0 at the time of printing, and to accurately set the amount of ink per inking. Therefore, for example, it becomes possible to mark accurately, etc.
The accuracy of the inking operation is greatly improved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the configuration of the main parts of an inking device according to an embodiment of the present invention, and FIGS. 2(a) to (c) are diagrams for explaining the operation of the inking device of FIG. 3 are cross-sectional views showing the structure of the main parts of a conventional inking machine for one time. 11...Ink, 12...Ink storage section, 14...Dot core, 1-5...
Ink reservoir portion, 16... Gap forming an ink supply path by capillary action, 17... Ink drip prevention portion.

Claims (2)

[Claims] (1) An ink accommodating part in which ink is stored and a dotting core is movably arranged; and an ink accommodating part provided below the ink accommodating part along the moving path of the dotting core, In an inking device comprising an ink reservoir in which an ink supply path using capillary phenomenon is formed in a gap between the ink reservoir and the outer surface, the inner surface of the ink reservoir is provided at the tip of the ink reservoir so that the inner surface thereof slides on the outer surface of the dot core. An inking device characterized in that it is provided with an ink drip prevention part that forms a close contact state. (2) A step of waiting the dotting core within an ink drip prevention part that forms a slidable and close contact with the outer surface of the dot dot core, and an ink reservoir that is arranged above the ink drip prevention part and utilizes capillary phenomenon. raising the dotting core to the inside of the dotting core and supplying a predetermined amount of ink to the tip of the dotting core; lowering the dotting core to perform inking; an inking method, comprising the step of raising the printer to the standby position, and repeating each of the steps according to the inking operation.