Image-forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorShinya Koyama
Life of this patent
Estimating the term…
Abstract
An image-forming apparatus with good yield and high reliability is provided by devising and improving the shape of a supporting member. Therefore, a flat type image-forming apparatus has at least a rear plate, a face plate arranged oppositely to the rear plate, and a supporting member arranged between the rear plate and the face plate and holding the distance between the rear plate and the face plate in an outer circumferential edge portion. In this flat type image-forming apparatus, the shape of a nook portion of the supporting member is set to an arc shape on the inner or outer side of a container.
Claims15
An image-forming apparatus including an airtight container, comprising:
- a rear plate arranging plural electron-emitting devices therein;
- a face plate arranged oppositely to said rear plate and having an image forming member;
- and
- a supporting member arranged between said rear plate and said face plate, for prescribing the distance between said face and rear plates, the interior of which being held in a pressure educing state,
- wherein said supporting member has four nook portions and shapes of the four nook portion have curvature on an inner or outer side of said container, a curvature radius R2 of each said nook portions on the outer side of said container is equal to or greater than 1 mm and is equal to or smaller than 40 mm, and said supporting member is joined to said face plate and said rear plate by an adhesive.
An image-forming apparatus including an airtight container, comprising:
- a rear plate arranging plural electron-emitting devices therein;
- a face plate arranged oppositely to said rear plate and having an image forming member;
- and
- a supporting member arranged between said rear plate and said face plate, for prescribing the distance between said face and rear plates, the interior of which being held in a pressure reducing state,
- wherein said supporting member has four nook portions and shapes of the four nook portions have curvature on inner and outer sides of said container, a curvature radius R2 of each of said nook portions on the outer sides of said container is equal to or greater than 1 mm and is equal to or smaller than 40 mm, and said supporting member is joined to said face plate and said rear plate by an adhesive.
An image-forming apparatus including an airtight container, comprising:
- a rear plate arranging plural electron-emitting devices therein;
- a face plate arranged oppositely to said rear plate and having an image forming member;
- and
- a supporting member arranged between said rear plate and said face plate, for prescribing the distance between said face and rear plates, the interior of which being held in a pressure reducing state,
- wherein said supporting member has four nook portions and shapes of the four nook portions have curvature on an inner or outer side of said container, a curvature radius R2 of each of said nook portions on the outer side of said airtight container is equal to or greater than 10 mm and is equal to or smaller than 20 mm, and said supporting member is joined to said face plate and said rear plate by an adhesive.
An image-forming apparatus including an airtight container, comprising:
- a rear plate arranging plural electron-emitting devices therein;
- a face plate arranged oppositely to said rear plate and having an image forming member;
- and
- a supporting member arranged between said rear plate and said face plate, for prescribing the distance between said face and rear plates, the interior of which being held in a pressure reducing state,
- wherein said supporting member has four nook portions and shapes of the four nook portions have curvature on inner and outer sides of said container, a curvature radius R2 of each of said nook portions on the outer sides of said container is equal to or greater than 10 mm and is equal to or smaller than 20 mm, and said supporting member is joined to said face plate and said rear plate by an adhesive.
Dependencies are inferred from the claim text.