JPH049614U

JPH049614U -

Info

Publication number: JPH049614U
Application number: JP4859390U
Authority: JP
Priority date: 1990-05-11
Filing date: 1990-05-11
Publication date: 1992-01-28

Description

[Brief explanation of the drawing]

第１図は、この考案に係るシートの第１実施例
の一部縦断面図、第２図は、そのシートの平面図
、第３図イ〜ハは、濾過孔の変形例を示す図、第
４図は、第２の実施例の一部斜視図、第５図は、
第４図のシートを用いてプレパラート状となした
ものの平面図、第６図は、シートに組み合せ細溝
を設けたものの他の変形例を示すものである。１，１１，１１１……シート、２……濾過孔、
２Ａ，２１Ｂ……大径孔、２Ｂ，２２，３３……
小径孔、２１Ａ，２１Ｃ，２１Ｄ……テーパー孔
、３０……細溝、７０，８０……細溝群。 FIG. 1 is a partial vertical sectional view of a first embodiment of the sheet according to the invention, FIG. 2 is a plan view of the sheet, and FIGS. 3A to 3C are views showing modified examples of filter holes. FIG. 4 is a partial perspective view of the second embodiment, and FIG.
FIG. 4 is a plan view of a preparation prepared using the sheet, and FIG. 6 shows another modification of the sheet in which combined narrow grooves are provided. 1, 11, 111... sheet, 2... filter hole,
2A, 21B...Large diameter hole, 2B, 22, 33...
Small diameter hole, 21A, 21C, 21D... Taper hole, 30... Thin groove, 70, 80... Thin groove group.

Claims

[Claims for Utility Model Registration] 1. A thin sheet material made of glass, ceramics, organic polymers, or other materials, which has filter holes communicating from its first surface to its second surface. A filtration sheet, wherein the filtration holes have large openings only in the surface portion of the sheet. 2. The filter sheet according to claim 1, wherein the large opening is configured to have a cylindrical or tapered shape. 3. The filter sheet according to claim 1, wherein the large openings are in the form of narrow grooves. 4 the filter pores are dense in the first direction;
Claims 1 to 3 are arranged so as to be coarse in the second direction perpendicular to the first direction.
The filter sheet described.