Photocopying – Projection printing and copying cameras – Detailed holder for photosensitive paper
Reexamination Certificate
2005-08-09
2005-08-09
Mathews, Alan (Department: 2851)
Photocopying
Projection printing and copying cameras
Detailed holder for photosensitive paper
C269S021000, C271S194000, C347S104000
Reexamination Certificate
active
06927841
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.
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Search Report for Corresponding European Patent Application. No. 00118448.0.
Brugue Joaquim
Hinojosa Antonio
Jansa Marc
Magrans Francesc Xavier
Valles Lluis
Hewlett--Packard Development Company, L.P.
Mathews Alan
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