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US 6,737,790 B2Granted
Image forming apparatus having a heat insulating member
AssigneeCanon Kabushiki Kaisha
InventorJunichi Seki
Life of this patent
Estimating the term…
Abstract
An image forming apparatus includes an envelope formed by first and second substrates disposed at a predetermined distance therebetween and an image forming member disposed in the envelope. A heat insulating member is disposed on a surface of the envelope in an area excepting partial surface areas of the first and second substrates.
Claims12
An image forming apparatus comprising:
- an envelope including first and second substrates and a frame disposed between said first and second substrates and forming a clearance therebetween;
- image forming means disposed between said first and second substrates within said envelop, said image forming means including an electron emitting device disposed on said first substrate and an image forming member disposed on said second substrate, said image forming member forming an image responsive to an irradiation with an electron emitted from said electron emitting device;
- and
- a heat insulating member for suppressing a thermal leakage, said insulating member disposed on an outer surface of said envelope, including surfaces of said frame and said first substrate, and a surface of said second substrate except for a surface region on which said image forming means is arranged, wherein a quantity of heat generated by said second substrate during operation of said image forming apparatus is greater than that of said first substrate.
1 more element
An image forming apparatus comprising:
- an envelope including first and second substrates and a frame disposed between said first and second substrates and forming a clearance therebetween;
- image forming means disposed between said first and second substrates within said envelope, said image forming means including an electron emitting device disposed on said first substrate and an image forming member disposed on said second substrate, said image forming member forming an image responsive to an irradiation with an electron emitted from said electron emitting device;
- and
- a heat insulating member for suppressing a thermal leakage, said member disposed on an outer surface of said envelope, including surfaces of said frame and said first and second substrates except for a surface region of said image forming means on both of said first and second substrates.
1 more element
An image forming apparatus comprising:
- an envelope including first and second substrates and a frame disposed between said first and second substrates and forming a clearance therebetween;
- image forming means disposed between said first and second substrates within said envelope, said image forming means including an electron emitting device disposed on said first substrate and an image forming member disposed on said second substrate, said image forming member forming an image responsive to an irradiation with an electron emitted from said electron emitting device;
- and
- a heat insulating member for suppressing a thermal leakage, said insulating member disposed on an outer surface of said envelope, including surfaces of said frame and said second substrate, and a surface of said first substrate except for a surface region on which said electron emitting device are arranged, wherein a quantity of heat generated by said first substrate during an operation of said image forming apparatus is greater than that of said second substrate.
1 more element
Dependencies are inferred from the claim text.