JPS5919838A - Densitometer - Google Patents

Abstract

PURPOSE:To measure automatically and quickly the concentration at many points with a simple constitution and operation, by providing a sending mechanism controlled by a detection output of a detection mechanism and a measuring head for measuring successively each measuring part of a sample in synchronization with said sending mechanism, for sending a sample stand to an arrangement direction of the successively arranged measuring part. CONSTITUTION:A prescribed position detecting hole 5 of a sample cassette 3 is made to detect by a prescribed position detecting part 10 provided to the prescribed position of a densitometer main body 6 at the time of movement. When the hole 5 is detected, a driving motor 9 is stopped by a control mechanism (not shown in the figure) and a push-pull solenoid 11 is excited and a measuring head 13 is lowered via a link 12. Further, a measuring part 1 at the position corresponding to the detected hole 5 is made to measure by the head 13. After the measurement is performed, the solenoid is de-excited and the head 13 is raised. Then, the motor 9 is driven again and the cassette 3 is transferred to the next measuring position and so forth the same operation is repeated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a densitometer, and more particularly to a densitometer having a mechanism for automatically transporting and measuring a sample having a large number of measurement parts whose concentration is to be measured.

With conventional densitometers, measurement operations were performed manually, so when measuring the densities of multiple points such as film control strips or roll strike IJ knobs that have step-by-step densities, it is necessary to Because of the multiple points, the position detection operation is extremely complicated.

The densitometer of the present invention is designed to eliminate these drawbacks, and includes a sample in which a large number of measurement parts are arranged in sequence, a sample stage for supporting the sample, and a detection part for each measurement part of the sample. a detection mechanism for transporting the sample stage in the direction of arrangement of the sequentially arranged measurement parts; It is characterized by consisting of a measurement head that sequentially measures , and can automatically transport the sample stage and perform continuous measurements.

The present invention will be explained in detail below with reference to the drawings.

In the present invention, as shown in FIG. 1, a sample 2 in which a large number of measuring parts 1, for example, three points, which need to be measured are arranged in the longitudinal direction, is connected to a horizontal part 3 and one end thereof as shown in FIG. The sample cassette 3 is disposed at a predetermined position, for example, at its horizontal portion 3a, and has a hanging portion 3b extending downward from the sample cassette 3, and a transport guide plate 4 extending horizontally outward from the hanging portion 3b of the sample cassette 3 is disposed at a predetermined position, for example, at the horizontal portion 3a thereof. A predetermined position detection hole 5 is provided at a position corresponding to the measurement portion 1.

The hanging portion 3b of the sample cassette 3 and the transport guide plate 4 thus formed are inserted into the T-shaped scan groove 7 correspondingly formed in the densitometer main body 6, as shown in FIG.
At this time, a third
As shown in FIG.
By rotating one pressure roller 8 by a drive motor 9, the sample cassette 3 is moved in the longitudinal direction.

Also, during this movement, the concentration needle main body 6 is at a predetermined position jffi+,'
The predetermined position detection hole 5 of the sample cassette 3 is detected by a predetermined position detecting section 10 such as a photo ink clubter comprising a light source and a light receiving section provided in the sample cassette 3.

Furthermore, when the predetermined position detection hole 5 is detected, the control mechanism (
(not shown), the drive motor 9 is stopped, and as shown in FIG.
As shown in FIG. 5, the push-pull solenoid 11 is energized, the measuring head 13 is lowered via the link 12, and the measuring portion 1 at the position corresponding to the detected predetermined position detection hole 5 is measured by the measuring head 13. so that

Furthermore, the measurement diameter solenoid 11 is deenergized, and as a result, the measurement head 13 is raised, and the drive motor 9 is driven again to transport the sample cassette 3 to the next measurement position, and the same operation is repeated thereafter. do.

Note that 14 is a start button provided on the main body 6 of the concentration meter, and a display section that digitally displays 15 concentration values.

FIG. 7 shows a circuit diagram of the concentration needle of the present invention, where MM is a mono multivibrator, FF is a flip-flop, and AMP is an amplifier. FIG. 8 is a diagram showing the waveforms of each part (1) to (2) shown in FIG. 7.

That is, when the power switch is turned on and the start switch is turned on, the pulses shown in Fig. 8 are generated, and the flip-flop generates the pulse of A pulse is generated, and this pulse generates a pulse (2) from the 7 lip-flop to open the motor control gate and the U predetermined position detection pulse gate, and a pulse (2) is generated to reset the counter. In addition, the pulse of ■ generates the pulse of ■ via the shift flip-flop, and the pulse of ■ and the pulse of ■
The motor control pulse of ■ is created by the pulse of.

Further, a pulse (2) is generated by the signal from the predetermined position detection section and a pulse (2), and this pulse generates pulses (2) and (2) from the mono-multivibrator, respectively, to determine the renoid excitation timing and the concentration measurement timing, respectively. Furthermore, the counter is started by the pulse (■), and after a predetermined count, the pulse (■) is generated and the pulse (■) is passed through the flip-flop.
, ■ pulses disappear.

In the above embodiment, the measurement portions 1 are arranged on the sample 2 in the longitudinal direction, but the measurement portions 1 may be arranged in the circumferential direction, and in this case, the sample cassette 3
It shall be constructed so that it rotates.

Note that the detection mechanism in the present invention includes a predetermined position detection hole 5.
If the shape of the 0 reference position 5 is different from the others,
The position of the reference position detection hole can be determined by the difference in the detection electric signal caused by the difference in shape between the detection hole 5 at the reference position and other detection holes. As described above, according to the densitometer of the present invention, there are many There is a great advantage in that point concentration measurements can be performed automatically and quickly with extremely simple construction and operation.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of the sample, Fig. 2 is an explanatory diagram of the sample cassette of the Kinei FyJ concentration meter, Fig. 3 is an explanatory diagram of the sample cassette attachment part of the concentration needle of the present invention, and Fig. 4 is the measurement head thereof. 5 is a side view of the concentration needle of the present invention, FIG. 6 is a perspective view thereof, FIG. 7 is a circuit diagram thereof, and FIG. 8 is a line diagram showing waveforms at various parts of this circuit diagram. DESCRIPTION OF SYMBOLS 1...Measurement part, 2...Sample, 3...Sample cassette, 3a...Horizontal part, 3b...Drooping part, 4...
- Conveyance guide plate, 5... Predetermined position detection hole, 6... Density H main body, 7... Scan groove, 8... Pressure roller, 9... Drive motor, 10... Predetermined position Detection part, 1
1... Solenoid, J2... Link, Work 3... Measuring head, 14... Start button, MM... Mono multivibrator, FF... Fritz float 7', AM
P...Amplifier, ■~■...Each part, 15...Display section. 1l-f (1. Agent Patent Attorney Makoto Sawagi -1゛) Bottle (+4 circles + 6 concave 6 umbrella 5 haze)

Claims (3)

[Claims] (1) A sample in which a large number of measurement parts are arranged in sequence, a sample stand for supporting this sample, a detection mechanism for detecting each measurement part of the sample, and a measurement part in which the sample stand is arranged in the order. a feeding mechanism controlled by the detection output of the detection mechanism for feeding in the arrangement direction of the sample, and a measuring head that sequentially measures each measurement portion of the sample in synchronization with the leaving mechanism. Total. (2) The sample stage has a horizontal part on which the sample is placed, a hanging part that is inserted into a groove formed in the concentration meter body, and a hanging part that corresponds to each measurement part of the sample placed in the hanging part. The concentration needle according to claim 1, comprising a detection hole formed therein. (3) The feeding mechanism includes a pressure roller that clamps the hanging portion from both sides, a drive motor that drives the pressure roller, a detection section that detects the detection hole, and an output of the detection section that drives the drive motor. 2. The concentration meter according to claim 2, comprising a control mechanism for controlling the % tolerance.