Patent ID: 11945252
Assignee: CANON KABUSHIKI KAISHA
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B  C | IPC B  C

Claim 0:
1. A recording medium comprising:
a substrate;
a first ink-receiving layer; and
a second ink-receiving layer adjacent to the first ink-receiving layer, in this order,
wherein
the first ink-receiving layer contains first inorganic particles having an average primary particle size of 50 nm or less,
the first inorganic particles are particles of at least one material selected from the group consisting of fumed silica, fumed alumina, and hydrated alumina, and
the first ink-receiving layer has a positive surface zeta potential, and
wherein
the second ink-receiving layer contains second inorganic particles having an average primary particle size of 50 nm or less,
the second inorganic particles are particles of at least one material selected from the group consisting of fumed silica, fumed alumina, and hydrated alumina,
the second ink-receiving layer has a negative surface zeta potential, and
the second ink-receiving layer has a thickness of 2 μm to 15 μm.