Title:
画像形成機構の現在の大気密度を求める方法および画像形成機構
Document Type and Number:
Japanese Patent JP4105603
Kind Code:
B2
Abstract:
A method for determining a present air density for an imaging mechanism (20) is presented. During a first time period (77, 101, 105): in a determining and storing action, a nominal air density is stored (66, 100). In an increasing action, a fan input is increased (72, 96) until a known pressure in a cavity coupled to a fan receiving the fan input has been reached. In a determining and storing action, a nominal fan parameter is determined and stored (74, 76, 98, 108) after the known pressure is reached. During a second time period (95, 103, 109): in an increasing action, the fan input is increased (84) until the known pressure in the cavity has been reached. In a determining action, a present fan parameter is determined (86, 106) after the known pressure is reached. In a calculating action, the present air density is calculated (88, 102, 108) from the present fan parameter, the nominal fan parameter, and either the known pressure or the nominal air density.
Inventors:
James O Beelar
Todd Earl Medin
Todd Earl Medin
Application Number:
JP2003275751A
Publication Date:
June 25, 2008
Filing Date:
July 17, 2003
Export Citation:
Assignee:
Hewlett-Packard Development Company
International Classes:
B41J29/38; B41J29/377; G01N7/00; G01N9/00; G03G15/00; G03G21/00; G03G21/20
Attorney, Agent or Firm:
Shoichi Okuyama
Arihara Koichi
Matsushima Tetsuo
Hidefumi Kawamura
Arihara Koichi
Matsushima Tetsuo
Hidefumi Kawamura