The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 09, 2005
Filed:
Aug. 21, 2001
Antonio Hinojosa, Barcelona, ES;
Joaquim Brugue, Barcelona, ES;
Marc Jansa, Barcelona, ES;
Lluis Valles, Barcelona, ES;
Francesc Xavier Magrans, Barcelona, ES;
Antonio Hinojosa, Barcelona, ES;
Joaquim Brugue, Barcelona, ES;
Marc Jansa, Barcelona, ES;
Lluis Valles, Barcelona, ES;
Francesc Xavier Magrans, Barcelona, ES;
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A media holddown device a plastics vacuum guide attached to a sheet metal vacuum beam, the guide includes vacuum chambers in communication with the beam through openings to control the negative pressures applied to media of varying widths by a fan. Dividing walls are provided between the chambers to maintain the value of the negative pressure larger than a predetermined value, especially for media with conventional widths. An intermediate wall divides the guide into front and rear chambers to increase the control of media leading edges. The number, size and pattern of arrangement of openings are selected to produce desired air flow characteristics.