Print roll unit with ink storage core
View Patent ↗A print roll unit includes an elongate ink reservoir core defining a plurality of ink chambers, each extend along the core. The chambers are isolated so as to be each capable of storing a respective type of ink. A roll of print media includes a tubular former in which the core can be received and a length of print media which is wound upon the former. A housing includes a pair of molded covers which can be releasably fastened together to house the roll of print media.
1. A print roll unit comprising:
an elongate core defining a plurality of ink chambers, each ink chamber extending along the elongate core, the ink chambers being isolated so as to be each capable of storing a respective type of ink:
a roll of print media comprising a tubular former for receiving the elongate core and a length of print media wound upon the tubular former; and
a housing comprising a pair of molded covers releasably fastened together to house the roll of print media,
wherein an end of the elongate core defines a plurality of serpentine breathing channels each in fluid communication with a respective ink chamber.
2. A print roll unit as claimed in claim 1 , wherein the core further comprises sealing tape which covers the breathing channels.
3. A print roll unit as claimed in claim 1 , wherein the elongate core comprises an elongate molded part defining the ink chambers, and a rubber sealing cap for engaging with an end of the elongate molded part to seal the ink chambers.
4. A print roll unit as claimed in claim 1 , wherein the elongate core defines a plurality of longitudinally extending ribs for with the inside of the tubular former.
5. A print roll unit as claimed in claim 1 , wherein the molded covers define complementary formations to enable the molded covers to be snap fitted together.
6. A print roll unit as claimed in claim 1 , wherein one of the molded covers defines an elongate slot through which the print media can exit the print roll unit.
7. A print roll unit as claimed in claim 1 , further comprising a plurality of pinch rollers which are each rotationally mounted to the housing and are arranged to de-curl the print media as the print media is unwound from the roll.
8. A camera comprising a print roll unit as claimed in claim 1 , and a printer in fluid communication with the core and configured to print captured images on the print media with ink stored in the ink chambers.