JPH0149938B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reduction degree setting device for an automatic film reduction processing machine, for example, an automatic reduction processing machine for photolithographic film.

In an automatic film reduction processing machine, it is necessary to set the reduction degree to a predetermined value according to the gradation, that is, the dot percentage or density value of the film to be reduced. The method of keeping the strength constant and adjusting the reduction time is advantageous because it is easier to control and manage than other methods. However, conventionally, such adjustment of the reduction time has been achieved by incorporating a manually operated variable resistor into the automatic film reduction processing machine to regulate the speed of the feed system that passes the film through the reduction liquid zone. This method relies on experience or feeling to displace the force to a position corresponding to a predetermined value, and using this method it is extremely difficult to set the degree of force reduction to a correct value. Moreover, the gradation of the reduction force treated film is, for example, 10 to 10% in terms of halftone dot percentage.
The difference is over a wide range of 90%, and the variable of the degree of reduction is correspondingly wide.

The present invention provides a reduction degree setting device for an automatic film reduction processing machine that can accurately and easily set the reduction degree, that is, the reduction time, to a required value corresponding to the dot percentage or density value of the film to be reduced. is intended to provide.

The reduction degree setting device for an automatic film reduction processing machine according to the present invention reduces the reduction time in a direction in which a reduction time adjusting element, for example, a variable resistor regulating the speed of a film feeding system, can be moved in an automatic film reduction processing machine. The film halftone dot percentage or density value is measured in a direction substantially perpendicular to the film halftone dot percentage or density value, and the iso-reduction amount curve for each value of the film halftone dot percentage or density value is calculated at an appropriate stage, e.g. 2%, 4
A diagram displayed in stages of %, 6%, etc. is provided in a fixed position, and a pointer with a scale corresponding to the interval of the film halftone dot percentage or density value is provided on the diagram, and either the diagram or the pointer is provided. is fixed, and the other is coupled to the force reduction time adjusting element so as to move the element integrally in the direction of movement thereof.

According to the present invention, when performing a force reduction process using an automatic force reduction processing machine for a force reduction process film having a certain halftone dot percentage or density value (hereinafter abbreviated as halftone dot percentage), the required reduction is To set the power level, move the pointer (or diagram) so that the equal reduction amount curve of the corresponding value on the diagram intersects the scale line of the corresponding halftone dot percentage on the pointer.
That is, the purpose is achieved by aligning the scale of the pointer corresponding to the halftone dot percentage of the film subjected to force reduction treatment to the equal force reduction amount curve of the corresponding value. At the intersection of the predetermined dot percentage scale with the required uniform reduction amount curve, the reduction time adjustment element in the automatic film reduction processing machine is displaced to a predetermined position, so that the reduction degree of the automatic film reduction processing machine is adjusted. Set to a predetermined value.

As described above, according to the present invention, the degree of force reduction can be set by matching the equal force reduction amount curve shown in the diagram with the dot percentage scale of the pointer, so the degree of force reduction can be set accurately. It can be done easily and operationally.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a front view of an embodiment of the present invention, and FIG. 2 shows a perspective view of a variable resistor in the same embodiment.

In Figure 1, 1 is a diagram for setting the reduction degree,
The diagram shows, on the basis of experimentally obtained data, a reduction time adjustment element in an automatic film reduction processing machine (not shown) according to polar coordinates, i.e. a rotary variable speed control element for regulating the speed of the film feed system, for example. A direction in which the resistor 2 can move, that is, a direction substantially perpendicular to the direction in which the deceleration time is taken in the angular coordinate;
That is, the film halftone dot percentage is taken as the radial coordinate, and the equal reduction amount curve A for each value of the film halftone dot percentage is displayed at appropriate steps such as 2% jumps. The diagram 1 has an arithmetic numeric representation on the angular side of the polar coordinates indicating the reduction time (in seconds) and an arithmetical numeric representation on the radial side of the polar coordinates indicating the film dot percentage. Furthermore, the diagram 1 has an arithmetic numeric display indicating the amount of force reduction (%) for each of the above-mentioned equal force reduction amount curves A. The diagram 1 is arranged at a fixed position so as to be concentric with the rotating shaft 3 of the variable resistor 2.

Reference numeral 4 denotes a transparent plate type pointer, which has graduations 5 whose intervals match the intervals of the film halftone dot percentages in the above-mentioned diagram 1, that is, match the radial coordinates of the polar coordinates. Furthermore, the pointer 4 has an arithmetic numeric display indicating the film halftone percentage for the scale 5 . The pointer 4 is superimposed on the front surface of the diagram 1 and is fixed to the rotating shaft 3 of the resistor 2 so that it moves integrally with the variable resistor 2 in the moving direction of the resistor 2, that is, on the angle side of the polar coordinates. .
The scales 5 of the pointer 4 mutually match the same values to the film halftone dot percentage indicated by the radial coordinates of the diagram 1, such as the 90% scale and the 90% indicated halftone dot percentage coordinate.

In FIG. 2, reference numeral 6 indicates a film feeding system motor in the automatic film reduction processing machine, and the rotational speed of the motor is controlled by the rotational displacement of the variable resistor 2.

In the embodiment shown in Figs. 1 and 2, when the film is automatically reduced in force by the automatic film reduction processing machine, the scale 5 indicating the film halftone dot percentage on the pointer 4 is Move the pointer 4 in the direction of movement of the variable resistor 2 so that the scale corresponding to the halftone dot percentage of the force processing film intersects the equal reduction amount curve of the required reduction force percentage among the equal reduction amount curve A on the diagram 1. That is, when the variable resistor 2 is moved in a direction around the axis of the rotating shaft 3, the variable resistor 2 is moved integrally with this movement, and a predetermined force reduction degree is set.

Another embodiment of the invention is shown in front view in FIG.

The setting device of the embodiment shown in FIG. 3 is the same as that of the embodiment shown in FIG. The basic configuration is substantially the same as that of the example setting device. In FIG. 3, parts with the same reference numerals as in FIG. 1 indicate the same parts. In Figure 3,
In the equal force reduction amount curve A of Diagram 1, the horizontal axis of the diagram indicates the force reduction time, and the vertical axis indicates the film halftone dot percentage. The variable resistor 2 can move integrally with the pointer 4 in the horizontal axis direction of the diagram 1.

In the embodiment shown in FIG. 3, the predetermined force reduction degree is set in the same manner as in the embodiment shown in FIG.

In the present invention, instead of the form of the above embodiment, the pointer with the film dot percentage scale may be of a stationary type, and the diagram may be moved in a desired direction together with the variable resistor. This modification can be applied to both rotary and linearly movable variable resistors.

[Brief explanation of drawings]

Figure 1 is a front view showing one embodiment of the present invention, Figure 2 is a front view showing one embodiment of the present invention;
The figure is a perspective view of the variable resistor in the same embodiment, the third
The figure is a front view showing another example of implementing the present invention. 1 is a diagram, 2 is a variable resistor (reduction time adjustment element), 3 is a rotating shaft, 4 is a pointer, 5 is a scale of the pointer, and A is an equal reduction amount curve.

Claims (1)

[Claims] 1. The reduction time is set in the movable direction of the reduction time adjustment element in the automatic film reduction processing machine, and the reduction time is measured in the direction substantially perpendicular to the direction for each value of the film halftone dot percentage or density value. A diagram showing the equal reduction amount curve at appropriate stages is provided at a fixed position, and a pointer with a scale corresponding to the interval of the film halftone dot percentage or density value is provided on the diagram, and either the diagram or the pointer is attached to the diagram. A reduction degree setting device for an automatic film reduction processing machine, characterized in that the other part is connected to the reduction time adjusting element so as to move integrally with the element in the direction of movement thereof.