Honeycomb filter

A honeycomb filter comprising:

• a pillar-shaped honeycomb structure body having a porous partition wall disposed so as to surround a plurality of cells, which serve as fluid through channel extending from an inflow end face to an outflow end face;
• and a plugging portion disposed so as to plug end at any one of the inflow end face side and at the outflow end face side of the cells, wherein
• the cells each have a sectional shape that is a polygon in a section orthogonal to an extending direction of the cells of the honeycomb structure body,
• the cells having the plugging portion at ends on the outflow end face side and that are open on the inflow end face side are inflow cells,
• the cells having the plugging portion at ends on the inflow end face side and that are open on the outflow end face side are outflow cells,
• at least a part of a surface of the partition wall defining the outflow cells is loaded with exhaust-gas purifying catalyst,
• the partition wall defining the inflow cells includes a plurality of partition wall parts making up sides of the polygon that is the sectional shape of each cell, the partition wall parts each having a surface that is a face defining the inflow cell,
• the partition wall part is either a first partition wall part or a second partition wall part,
• the first partition wall part is loaded with the exhaust-gas purifying catalyst on the surface of the first partition wall part so that a percentage of a ratio of an area S2 of a range loaded with the exhaust-gas purifying catalyst to an area S1 of the surface of the first partition wall part exceeds 11%,
• the second partition wall part is not loaded with the exhaust-gas purifying catalyst on the surface of the second partition wall part, or is loaded with the exhaust-gas purifying catalyst so that a percentage of a ratio of an area S4 of a range loaded with the exhaust-gas purifying catalyst to an area S3 of the surface of the second partition wall part is 10% or less, and
• the partition wall defining each of the inflow cells is configured to include one or more of the first partition wall parts and one or more of the second partition wall parts as the partition wall parts.