Apparatus for providing back tension on a print media web

An apparatus for providing back tension onto a print media web of a printer, comprising:

• a plate having a post extended therefrom, said post being adapted to support a roll of print media thereon such that a central core of said roll of print media rests on an upper surface of said post allowing a web of said roll of print media to be paid out by rotation of said roll about said post;
• a spring having a first end attached to a portion of said plate and a second end having a handle coupled thereto;
• and
• a pressing element coupled to said handle, said spring being biased to urge said pressing element against said media supply roll to maintain said roll firmly in contact with said post during rotation of said roll;
• wherein said plate further comprises a slot disposed therein, said handle extending at least partially through said slot, said slot further providing a guide for movement of said handle.

An apparatus for providing back tension onto a print media web of a printer, comprising:

• a plate having a post extended therefrom, said post being adapted to support a roll of print media thereon such that a central core of said roll of print media rests on an upper surface of said post allowing a web of said roll of print media to be paid out by rotation of said roll about said post;
• a spring having a first end attached to a portion of said plate and a second end having a handle coupled thereto;
• a pressing element coupled to said handle, said spring being biased to urge said pressing element against said media supply roll to maintain said roll firmly in contact with said post during rotation of said roll and
• means for locking said handle in a position in which said pressing element does not contact said media roll.

An apparatus for providing back tension onto a print media web of a printer, comprising:

• a plate having a post extended therefrom, said post being adapted to support a roll of print media thereon such that a central core of said roll of print media rests on an under surface of said post allowing a web of said roll of print media to be paid out by rotation of said roll about said post;
• a spring having a first end attached to a portion of said plate and a second end having a handle coupled thereto;
• a pressing element coupled to said handle, said spring being biased to urge said pressing element against said media supply roll to maintain said roll firmly in contact with said post during rotation of said roll;
• and
• means for locking said handle in a position in which said pressing element does not contact said media roll;
• wherein said locking means further comprising a notch provided in said plate detached from said slot, said handle being adapted for selective movement to said notch.

An apparatus for providing back tension onto a print media web of a printer, comprising:

• a plate having a post extended therefrom, said post being adapted to support a roll of print media thereon such that a central core of said roll of print media rests on an upper surface of said post allowing a web of said roll of print media to be paid out by rotation of said roll about said post;
• a spring having a first end attached to a portion of said plate and a second end having a handle coupled thereto;
• a pressing element coupled to said handle, said spring being biased to urge said pressing element against said media supply roll to maintain said roll firmly in contact with said post during rotation of said roll;
• and
• a rotatable drum coupled to said media plate, and said spring further comprises a tape spring wound onto said drum.

An apparatus for a printer, comprising:

• a plate having a post extended therefrom, said post being adapted to support a roll of print media thereon such that a central core of said roll of print media rests on an upper surface of said post allowing a web of said roll of print media to be paid out by rotation of said roll about said post;
• means for pressing said roll of print media against said post, thereby providing back tension onto said web;
• and
• means for applying a sideways force on said roll to direct said roll against said plate;
• wherein said means for pressing further comprises:
• a spring having a first end attached to a portion of said plate and a second end having a handle couple thereto;
• and
• a pressing element coupled to said handle, said spring being biased to urge said pressing element against said media supply roll to maintain said roll firmly in contact with said post during said rotation of said roll;
• and
• wherein said handle comprises an elongated channel portion, and said plate further comprises a standoff fixedly attached thereto, said standoff being adapted to fit within said elongated channel portion to provide a guide for slidable movement of said handle about said standoff along a course defined by said elongated channel.

An apparatus for a printer, comprising:

• a plate having a post extended therefrom, said post being adapted to support a roll of print media thereon such that a central core of said roll of print media rests on an upper surface of said post allowing a web of said roll of print media to be paid out by rotation of said roll about said post;
• means for pressing said roll of print media against said post, thereby providing back tension onto said web;
• and
• means for applying a sideways force on said roll to direct said roll against said plates;
• wherein said means for pressing further comprises:
• a spring having a first end attached to a portion of said plate and a second end having a handle coupled thereto;
• and
• a pressing element coupled to said handle, said spring being biased to urge said pressing element against said media supply roll to maintain said roll firmly in contact with said post during said rotation of said roll;
• and
• wherein said plate further comprises a slot disposed therein, said handle extending at least partially through said slot, said slot further providing a guide for movement of said handle.

An apparatus for a printer, comprising:

• a plate having a post extended therefrom, said post being adapted to support a roll of print media thereon such that a central core of said roll of print media rests on an upper surface of said post allowing a web of said roll of print media to be paid out by rotation of said roll about said post;
• means for providing back tension onto said web, said means for providing back tension disposed on said plate, wherein said means for providing back tension further comprises:
• a spring having a first end attached to a portion of said plate and a second end having a handle coupled thereto;
• and
• a pressing element coupled to said handle, said spring being biased to urge said pressing element against said media supply roll to maintain said roll firmly in contact with said post during said rotation of said roll;
• and
• a rotatable drum coupled to said plate, and said spring further comprises a tape spring wound onto said drum.