JPH0291541A - Film coating device - Google Patents

Abstract

PURPOSE:To improve the coating accuracy of a liquid sample by providing a step between a coating roll and a feed roll which leads a film from the coating roll. CONSTITUTION:The coating roll 4 is moved up and down between upper and lower limit switches 6 against the repulsive force of a spring 5 and the constant step having a constant angle of the leading the film extending from the coating roll 4 from a conveyor 7 is provided so as to secure the coating accuracy. Consequently, the coating accuracy of the sample is improved and coating operation is carried out equally to operation by a clinical engineer, etc. Further, the conveyor 7 where blood 19 is dripped is made endless and cleaning is carried out by a cleaning mechanism 12 to use the conveyor (film) for sample dripping efficiently without any waste.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a film smearing device that can automatically smear a sample such as blood onto a film.

[Prior art] In recent years, testing of pathological tissue samples such as blood in hospitals, etc.
Multiple samples are smeared onto a long flexible film using an automatic smearing device, and the flexible film smeared with the samples is dried and dyed.

This sample is examined using a microscope or the like. The film smearing device for the sample according to the prior art is disclosed in, for example, Japanese Patent Application Laid-open No. 52
As described in Japanese Patent Laid-open No. 17884 and Japanese Patent Application Laid-Open No. 52-152282, a film on which a sample is dropped and conveyed, and a ribbon conveyed in the opposite direction while in contact with the film are provided, and these films are and is configured to smear the dropped sample onto the film by contact movement of the ribbon in the opposite direction.

Furthermore, as a technique related to the sample smearing device, Japanese Patent Application Laid-Open No. 117130/1984 can be mentioned.

[Problems to be Solved by the Invention] Although the sample smearing device according to the prior art can smear a sample by moving the film and ribbon into relative contact, it is difficult to smear the sample by simply pressing the film against the ribbon on which blood is placed. This caused problems in that it was difficult to ensure the quality of the smeared samples.

An object of the present invention is to eliminate the problems caused by the prior art, and to provide a film smearing device that smears a liquid sample on a film with high quality.

[Means for Solving the Problems] In order to achieve the above object, the film smearing device according to the present invention includes a conveyor that is conveyed in a horizontal direction, a dripping mechanism that drips a sample onto the conveyor, and a film smearing device that is a smear roller that presses the film against the sample when moved over the sample;

A feed roller was provided to draw out the film from the smear roller in steps.

[Operation] The film smearing device smears the liquid sample onto the film by the smear roller pressing the film against the sample on the conveyor and pulling out the film with the step.

Therefore, the film smearing device according to the present invention can smear a liquid sample on a film with high quality due to the step difference in the roller.

[Example] Hereinafter, a first example of the film smearing device according to the present invention will be described.
This will be explained in detail using figures.

As shown in the figure, the film smearing device according to the present embodiment includes a feed roller 2 that pinches and conveys both sides of a film 1 wound on a roll, and a plurality of rollers 11.
An endless sample moving conveyor 7 smears the dropped blood 19 onto the film 1 by an operation described below, and the conveyor 7 is driven up and down in the direction of arrow B by the rotation of the motor 3, and the conveyor 7 holds the film 1 at the position of the presser 8. A smear roller 4 that presses the smeared film 1 to
The dripping mechanism 23 that drips the sample, and the conveyor 7 after smearing the sample.
A cleaning mechanism 12 that performs cleaning by spouting cleaning liquid to the area, a recovery unit 20 that recovers the cleaning liquid from the cleaning mechanism 12, a motor 10 that rotationally drives the roller 11 to move the conveyor 7, and the smear roller 4 and the feeder. It includes a drying fan 13 that dries the smear sample 22 between it and the roller 14, and a control circuit 17 that controls the driving of the motors 3, 10.16 and the dripping mechanism 23.

The smearing roller 4 is raised and lowered by about 5 degrees between upper and lower limit switches 6 against the repulsive force of a spring 5, and the drawing angle θ of the film 1 extending from the smearing roller 4 from the conveyor 7 is adjusted to ensure smearing accuracy. A step difference of approximately 30 degrees is provided, and the conveyance speed of the film 1 by the motor 16 is set to approximately 7 cm/sec. Further, the conveyor 7 has a plurality of protrusions 9 arranged at predetermined intervals, and this interval is set to be half the distance between the position where the blood 19 is dropped by the dripping mechanism 23 and the lowered position of the smear roller 4.

The film smearing device configured in this manner has a control circuit 17.
detects the protrusion 9 by the limit switch 18,
The control circuit 17 stops the motor 10 to stop the conveyance of the conveyor 7 and causes the dropping mechanism 23 to drop the blood 19. At the same time, the control circuit 17 drives the motor 3 to bring the smear roller 4 into contact with the film 1 on the presser 8. The film 1 is conveyed by driving the motor 16 while
When the conveyance is completed, the motor 3 is driven to move the smear roller 4
The conveyor 7 is moved again to the detection position of the next protrusion 9 after being raised by about 5111 m, and the one-dropping mechanism 23 drips blood 19, the smear roller 4 is lowered, and the motor 16 transports the film 1. When the blood 19 on the film 1 reaches the bottom of the smear roller 4 due to the conveyance of ) at a speed of 7 m in the direction of arrow C.
766c, the blood 21 is transferred to the film 1.
smear with high quality. Film 1 smeared with this blood
is dried by the drying fan 13, and then the motor 16
The conveyor 7, which is sent to the staining device (not shown) by the rotation of the feed roller 15 driven by the drive of Blood adhering to the conveyor 7 is washed away by spouting. This cleaning liquid is collected in the collection section 20. From now on, this film smearing device, every time the control circuit 17 detects the protrusion 9 of the conveyor 7, drops the blood 19 by the dripping mechanism 23, smears and dries the blood 21 on the film 1, and cleans the conveyor 7 after smearing. performed simultaneously and consecutively.

As described above, in the smearing of the sample according to this embodiment, the film 1 guided from the smear roller 4 on the sample moving conveyor 7 to the feed roller 14 is drawn out at a step of about 30 degrees, and the drawing and conveyance speed is set at about 7 mm. /sea improves the accuracy of smearing the sample, making it possible to perform work equivalent to that performed by a clinical technician or the like. Furthermore, by making the conveyor 7 for dropping the blood 19 endless and cleaning it by the cleaning mechanism 12, the conveyor (film) for dropping the sample can be used efficiently without waste.

[Effects of the Invention] As described above, according to the present invention, by providing a step between the smear roller and the feed roller that pulls out the film from the smear roller, it is possible to improve the smear precision of a liquid sample.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of a film smearing device according to the present invention. 1... Film, 2.11.14.15... Feed roller, 4... Smear roller, 3.10.16... Motor, 5... Spring, 6, 18... Limit switch , 7 River sample moving conveyor, 8... Holder, 9...
-Protrusion, 12...Washing mechanism, 13...Drying fan, 17...Control circuit, 19.21...Blood, 20.
...Recovery section, 23...Dripping mechanism.

Claims (1)

[Claims] 1. In a film smearing device that continuously smears a liquid sample onto a film, a conveyor that is conveyed in a horizontal direction;
A dropping mechanism that drops the sample onto the conveyor, a smear roller that presses the film against the sample when it is moved onto the dropped sample by the conveyance of the conveyor, and a feed roller that pulls out the film from the smear roller with a step, A film smearing device characterized in that a sample is smeared onto the film by a step difference between the smear roller and the feed roller.