Roll holder device for supporting recording material roll and supply magazine with the same

A roll holder device for loading of a supply magazine with a recording material roll in a rotatable manner, said recording material roll including a tubular spool shaft and continuous recording material wound about said tubular spool shaft in a roll form, said roll holder device comprising:

• first and second holder cores inserted in respective first and second ends of said tubular spool shaft;
• first and second stationary sections, supported on a holder frame member of said supply magazine stationarily and removably, for supporting respectively said first and second holder cores in a rotatable manner;
• an anti-dropping mechanism for pushing a shaft inner surface of said tubular spool shaft and preventing said first and second holder cores from dropping from said tubular spool shaft;
• a bias member for biasing and pressing said anti-dropping mechanism against said shaft inner surface;
• wherein said anti-dropping mechanism includes:
• a push surface for contacting said shaft inner surface;
• and
• plural claws, formed with said push surface, for being thrust into said shaft inner surface,
• wherein ends of said first and second holder cores are connectable with each other, and
• a core sleeve secured to said first holder core;
• and
• an access opening formed through said core sleeve,
• wherein said anti-dropping mechanism includes an anti-dropping lever and said push surface, said anti-dropping lever shiftable between first and second positions, contained in said core sleeve when in said first position, and protruded toward an outside of said core sleeve through said access opening when in said second position, said anti-dropping lever for pressing said push surface against said shaft inner surface.

A roll holder device for loading of a supply magazine with a recording material roll in a rotatable manner, said recording material roll including a tubular spool shaft and continuous recording material wound about said tubular spool shaft in a roll form, said roll holder device comprising:

• first and second holder cores inserted in respective first and second ends of said tubular spool shaft;
• first and second stationary sections, supported on a holder frame member of said supply magazine stationarily and removably, for supporting respectively said first and second holder cores in a rotatable manner;
• an anti-dropping mechanism for pushing against a shaft inner surface of said tubular spool shaft and preventing said first and second holder cores from dropping from said tubular spool shaft,
• wherein said first and second holder cores are rotatable in unwinding and winding directions;
• and
• a load changer mechanism for applying higher rotational load to said first and second holder cores during rotation of said first and second holder cores in said unwinding direction than during rotation of said first and second holder cores in said winding direction,
• wherein said load changer mechanism includes:
• a friction pad member for exerting braking force to each of said first and second holder cores;
• and
• a one-way clutch for connecting said each holder core to said friction pad member during rotation of said first and second holder cores in said unwinding direction, and for disconnecting said each holder core from said friction pad member during rotation of said first and second holder cores in said winding direction;
• wherein said friction pad member frictionally contacts one of said first and second stationary sections when connected with said each holder core.

A roll holder device for loading of a supply magazine with a recording material roll in a rotatable manner, said recording material roll including a tubular spool shaft and continuous recording material wound about said tubular spool shaft in a roll form, said roll holder device comprising:

• first and second holder cores inserted in respective first and second ends of said tubular spool shaft;
• first and second stationary sections, supported on a holder frame member of said supply magazine stationarily and removably, for supporting respectively said first and second holder cores in a rotatable manner;
• an anti-dropping mechanism for pushing against a shaft inner surface of said tubular spool shaft and preventing said first and second holder cores from dropping from said tubular spool shaft,
• wherein first and second cutouts are formed in said holder frame member, for supporting respectively said first and second stationary sections in a rotatable manner;
• and
• at least one orientation regulator mechanism for preventing said first holder core from being set in said second cutout or said second holder core from being set in said first cutout,
• wherein said first and second stationary sections include respectively first and second bearing members, inserted in respectively said first and second cutouts, for supporting said first and second holder cores in a rotatable manner, to constitute said at least one orientation regulator mechanism,
• wherein said first and second cutouts have respectively a pair of edges extending with an inclination relative to a vertical direction;
• said at least one orientation regulator mechanism includes an inclined surface, formed on said first and second bearing members, inclined according to said pair of said edges, for blocking erroneous insertion of said first bearing member into said second cutout and of said second bearing member into said first cutout.

A roll holder device for loading of a supply magazine with a recording material roll in a rotatable manner, said recording material roll including a tubular spool shaft and continuous recording material wound about said tubular spool shaft in a roll form, said roll holder device comprising:

• first and second holder cores inserted in respective first and second ends of said tubular spool shaft;
• first and second stationary sections, supported on a holder frame member of said supply magazine stationarily and removably, for supporting respectively said first and second holder cores in a rotatable manner;
• and
• a load changer mechanism for applying higher rotational load to said first and second holder cores during rotation of said first and second holder cores in said unwinding direction than during rotation of said first and second holder cores in said winding direction,
• wherein said load changer mechanism includes:
• a friction pad member for exerting braking force to each of said first and second holder cores;
• and
• a one-way clutch for connecting said each holder core to said friction pad member during rotation of said first and second holder cores in said unwinding direction, and for disconnecting said each holder core from said friction pad member during rotation of said first and second holder cores in said winding direction.

A roll holder device for loading of a supply magazine with a recording material roll in a rotatable manner, said recording material roll including a tubular spool shaft and continuous recording material wound about said tubular spool shaft in a roll form, said supply magazine having a holder frame member with first and second cutouts for supporting said roll holder device, said roll holder device comprising:

• first and second holder cores inserted in respective first and second ends of said tubular spool shaft;
• first and second stationary sections, fitted in said first and second cutouts stationarily and removably, for supporting respectively said first and second holder cores in a rotatable manner;
• and
• at least one orientation regulator mechanism for preventing said first holder core from being set in said second cutout or said second holder core from being set in said first cutout,
• wherein said first and second stationary sections include respectively first and second bearing members, inserted in respectively said first and second cutouts, for supporting said first and second holder cores in a rotatable manner, to constitute said at least one orientation regulator mechanism,
• wherein said first and second cutouts have respectively a pair of edges extending with an inclination relative to a vertical direction;
• wherein said at least one orientation regulator mechanism includes an inclined surface, formed on said first and second bearing members, inclined according to said pair of said edges, for blocking erroneous insertion of said first bearing member into said second cutout and of said second bearing member into said first cutout.