Method utilizing a magnetic assembly during etching thin...

Details Method utilizing a magnetic assembly during etching thin... Method utilizing a magnetic assembly during etching thin...

H - Electricity

01

J

H01J 9/14 (2006.01)

Patent

CA 2375996

In an improved method of etching apertures (44) in a thin metal sheet (32) to form a shadow mask for a color picture tube, the metal sheet has a first acid- resistant stencil (38) on one major surface thereof and a second acid- resistant stencil (40) on the other major surface thereof. At least one of the stencils has openings (42) therein at locations of intended apertures. The improvement comprises the steps of magnetically holding the metal sheet with a flat magnetic assembly (30), and moving the magnetic assembly magnetically holding the metal sheet thereon through an etching chamber (12). The magnetic assembly includes a magnetic layer (36) that is supported on an acid-resistant board (34).

Dans un procédé amélioré de gravure d'ouvertures (44) dans une tôle mince (32) pour former un masque perforé destiné à un tube couleur, la tôle comprend un premier stencil résistant à l'acide sur sa première surface principale et un second stencil (40) résistant à l'acide sur sa seconde surface principale. Au moins un des stencils présente des orifices (42) situés en des endroits d'ouvertures voulues. L'amélioration comprend les étapes consistant à maintenir magnétiquement la tôle à l'aide d'un ensemble magnétique plat (30), et à déplacer l'ensemble magnétique maintenant magnétiquement la tôle dans une chambre de gravure (12). L'ensemble magnétique comprend une couche magnétique (36) portée sur une plaque (34) résistante à l'acide.

Affiliated with

Also associated with

Rating

Method utilizing a magnetic assembly during etching thin... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method utilizing a magnetic assembly during etching thin..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method utilizing a magnetic assembly during etching thin... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1382069