United States Patent [19] [ii] Patent Number: 4,490,418
Yoshida [45] Date of Patent: Dec. 25, 1984
U.S. Patent Dec. 25, 1984 Sheet 2 of 3 4,490,418
[54] COATING METHOD AND APPARATUS
[75] Inventor: Toru Yoshida, Kanagawa, Japan
[73] Assignee: Fuji Photo Film Co., Ltd., Kanagawa, Japan
[21] Appl. No.: 485,354
[22] Filed: Apr. 15,1983
[30] Foreign Application Priority Data
Apr. 16, 1982 [JP] Japan 57-63604
[51] Int. CI.3 B05D 1/26; B05C 3/132
[52] U.S. a 427/445; 118/410;
118/411
[58] Field of Search 118/410, 407, 411, 412;
427/434.3, 445
[56] References Cited
U.S. PATENT DOCUMENTS
3,916,043 10/1975 Fowble ■. 118/410 X
Primary Examiner—Evan K. Lawrence
Attorney, Agent, or Firm—Sughrue, Mion, Zinn,
Macpeak & Seas
[57] ABSTRACT
A slide bead coating method and apparatus for applying a coating solution onto an advancing web includes an air compressed chamber for keeping a lower side of a solution bead in a pressure-applied condition to produce a difference in pressure between the upper side and the lower side of the solution bead to stabilize the bead. A coating solution which has a low viscosity and good wetting properties can thus be applied onto the web at high speeds and in a thin layer form, and a so-called bead-dropping phenomenon is avoided. Therefore, the preparation of a layer for photo-sensitive materials is facilitated.
9 Claims, 5 Drawing Figures
