EP print media path actuated by insertion/removal of toner cartridge
AssigneeHewlett-Packard Development Company, L.P.
InventorWilliam Leonard Cornelius
Life of this patent
Estimating the term…
Abstract
An electrophotographic printer is provided with a toner cartridge that is inserted/removed from said printer via its top side. The insertion and removal of the toner cartridge sets/releases the pressure on fuser rollers in order to facilitate clearing print media jams in the printer's fuser region.
Claims20
An electrophotographic printer having a front, rear, top, bottom, sides, print media collection tray, laser printer, fuser having a pressure activation/deactivation mechanism, toner cartridge and media path, and wherein the toner cartridge is inserted into/withdrawn from said printer via its top and wherein the pressure activation/deactivation mechanism is activated/deactivated by insertion/withdrawal of the toner cartridge into/out of said printer.
A fuser for an electrophotographic printer, said fuser comprising:
- a heater roller connected to a first roller journal;
- a backup roller connected to a second roller journal;
- and
- a cam having a cam surface and a lever arm that is deactivated/actuated by a toner cartridge that is taken out of/placed in contact with the lever when said toner cartridge is removed from/inserted into said printer.
An electrophotographic printer having a front, rear, top, bottom, sides, print media collection tray, laser printer, fuser having a pressure activation/deactivation mechanism operated by insertion/removal of a toner cartridge, toner cartridge and media path, and wherein:
- (1) the fuser can be accessed by removal of the toner cartridge via the top of said printer,
- (2) a fuser heater roller is positioned above a backup roller,
- (3) the backup roller is connected to a cammable roller journal;
- and
- (4) a cam having a cam surface that cams against/does not cam against the cammable roller journal when the lever arm is actuated by a toner cartridge that is taken out of/placed in contact with the lever when said toner cartridge is removed from/inserted into said printer.
Dependencies are inferred from the claim text.