Rib profile for reduced contact pressure in a printing device
AssigneeHewlett-Packard Development Company, L.P.
InventorsDonald Christopher Sutton, Alvin Marion Post
Life of this patent
Estimating the term…
Abstract
A printing device component may include a base surface and a plurality of ribs extending away from the base surface. Each rib may include a nominal guiding surface, one or more primary transition surfaces, one or more secondary transition surfaces, and one or more angled surfaces. Each primary transition surface may begin at a top surface and end at a secondary transition surface. Each secondary transition surface may begin at a primary transition surface and end at an angled surface. Each angled surface may begin at a secondary transition surface and end at the base surface.
Claims13
A printing device component comprising:
- a base surface;
- and
- a plurality of ribs extending away from the base surface, each rib comprising:
- a nominal guiding surface;
- one or more primary transition surfaces;
- one or more secondary transition surfaces;
- one or more angled surfaces;
- each primary transition surface beginning at the nominal guiding surface and ending at a secondary transition surface;
- each secondary transition surface beginning at a primary transition surface and ending at an angled surface;
- and
- each angled surface beginning at a secondary transition surface and ending at the base surface;
- the one or more primary transition surfaces comprise up to four primary transition surfaces, each primary transition surface extending in a different direction from said nominal guiding surface;
- the one or more secondary transition surfaces comprise up to four secondary transition surfaces, each secondary transition surface extending from a corresponding one of said primary transition surface;
- and
- the one or more angled surfaces comprise up to four angled surfaces, each angled surface extending from a corresponding one of said secondary transition surface.
A printer part comprising:
- a base surface;
- and a plurality of ribs extending away from the base surface, each rib comprising:
- a trapezoidal box shaped nominal guiding element comprising:
- one or more lead-in surfaces;
- one or more secondary transition curved surfaces, each beginning at one or more of the lead-in surfaces;
- one or more primary transition curved surfaces, each beginning at one or more of the secondary transition curved surfaces;
- and
- a nominal guiding surface beginning at the primary transition curved surfaces,
- the one or more lead-in surfaces of said ribs consist of four angled surfaces;
- the one or more secondary transition curved surfaces of said ribs consist of four curved surfaces, each associated with one angled surface and one lead-in surface;
- and
- the one or more primary transition curved surfaces of said ribs consist of four curved surfaces.
A printing device component comprising:
- a base surface;
- and
- a plurality of ribs extending away from the base surface, each rib comprising:
- a nominal guiding surface;
- one or more primary transition surfaces;
- one or more angled surfaces;
- each primary transition surface beginning at a nominal guiding surface and ending at an angled surface;
- the one or more lead-in surfaces of said ribs consist of four angled surfaces;
- the one or more primary transition curved surfaces of said ribs consist of four curved surfaces, each associated with one angled surface and one lead-in surface.
Dependencies are inferred from the claim text.