Sealing member for toner cartridge
AssigneeCF Technologies
InventorJan de Kesel
Life of this patent
Estimating the term…
Abstract
A sealing film for a toner cartridge or container. The sealing film has a layer with a thickness of between 20 μm and 1 mm and has at least on substantially linear tearing direction. The layer also includes surface elements that extend in a direction that is different from the preferred tearing direction of the sealing film.
Claims60
Sealing film for toner cartridge, said film having a longitudinal portion to be torn out, said longitudinal portion extending between a first line and a second line and to be adapted to be torn between a first end and a second end, wherein said sealing film comprises a layer with a thickness comprised between 20 μm and 1 mm and with one preferred substantially linear tearing direction, said layer being provided with:
- at least with a first longitudinal surface element selected from the group consisting of cuts, grooves, recesses and combinations thereof and extending along the first line, and
- a second longitudinal surface element selected from the group consisting of cuts, grooves, recesses and combinations thereof and extending along the second line,
- whereby said longitudinal surface elements extend in a direction of at least 5° with respect to the preferred substantially linear tearing direction.
A sealing film for toner cartridge, said film having a longitudinal portion to be torn out, said longitudinal portion extending between a first line and a second line and to be adapted to be torn between a first end and a second end, wherein said sealing film comprises a layer with a thickness comprised between 20 μm and 1 mm and with two preferred substantially linear tearing directions, said layer being provided with:
- at least with a first longitudinal surface element selected from the group consisting of cuts, grooves, recesses and combinations thereof and extending along the first line, and
- a second longitudinal surface element selected from the group consisting of cuts, grooves, recesses and combinations thereof and extending along the second line,
- whereby said longitudinal surface elements extend in a direction of at least 5° with respect to the preferred substantially linear tearing directions.
A toner holder selected from the group consisting of toner containers and toner cartridges, said holder being provided with a sealing film for closing an opening of the toner holder, said sealing film having a longitudinal portion to be torn out, said longitudinal portion extending between a first line and a second line and to be torn between a first end and a second end, wherein said sealing film comprises a layer with a thickness comprised between 20 μm and 1 mm and with a preferred substantially linear tearing direction, said layer being provided with:
- at least with a first longitudinal surface element selected from the group consisting of cuts, grooves, recesses and combinations thereof and extending along the first line, and
- a second longitudinal surface element selected from the group consisting of cuts, grooves, recesses and combinations thereof and extending along the second line,
- whereby longitudinal surface elements extend in a direction of at least 5° with respect to the preferred substantially linear tearing direction.
A toner holder selected from the group consisting of toner containers and toner cartridges said holder being provided with a sealing film for closing an opening of the toner holder, said sealing film having a longitudinal portion to be torn out, said longitudinal portion extending between a first line and a second line and to be torn between a first end and a second end, wherein said sealing film comprises a layer with a thickness comprised between 20 μm and 1 mm and with two preferred substantially linear tearing directions, said layer being provided with:
- at least with a first longitudinal surface element selected from the group consisting of cuts, grooves, recesses and combinations thereof and extending along the first line, and
- a second longitudinal surface element selected from the group consisting of cuts, grooves, recesses and combinations thereof and extending along the second line,
- whereby said longitudinal surface elements extend in a direction of at least 5° with respect to the preferred substantially linear tearing directions.
A method for opening a sealing film closing a longitudinal opening of a toner cartridge or container, said film having a longitudinal portion to be torn out, said longitudinal portion extending between a first line and a second line and to be adapted to be torn between a first end and a second end, wherein said sealing film comprises a layer with a thickness comprised between 20 μm and 1 mm and with one preferred substantially linear tearing direction, said layer being provided with:
- at least with a first longitudinal surface element selected from the group consisting of cuts, grooves, recesses and combinations thereof and extending along the first line, and
- a second longitudinal surface element selected from the group consisting of cuts, grooves, recesses and combinations thereof and extending along the second line,
- whereby said first and second lines extend in a direction of at least 5° with respect to the preferred substantially linear tearing direction.
A method for opening a sealing film closing a longitudinal opening of a toner cartridge or container, said film having a longitudinal portion to be torn out, said longitudinal portion extending between a first line and a second line and to be adapted to be torn between a first end and a second end, wherein said sealing film comprises a layer with a thickness comprised between 20 μm and 1 mm and with two preferred substantially linear tearing directions, said layer being provided with:
- at least with a first longitudinal surface element selected from the group consisting of cuts, grooves, recesses and combinations thereof and extending along the first line, and
- a second longitudinal surface element selected from the group consisting of cuts, grooves, recesses and combinations thereof and extending along the second line,
- whereby said first and second lines extend in a direction of at least 5° with respect to the preferred substantially linear tearing directions.
Dependencies are inferred from the claim text.