Patent ID: 9079434
Filing Date: 2015-07-14
Classification: B41J,Y10T

Abstract:
1. A circuit board unit attachable to a cartridge, comprising: a circuit board on which an electronic component is mounted; a first member having a surface opposing the circuit board; and a second member which is bonded to a region of the surface, the region being different from a region of the surface opposing the circuit board, the circuit board being not fixed to the first member and the second member and being retained between the first member and the second member with gaps extending in an orthogonal direction orthogonal to the surface and in a surface direction in parallel to the surface, the first member has a protrusion protruding in the orthogonal direction, the circuit board has a through hole that the protrusion penetrates and is larger in size than the protrusion when viewed in the orthogonal direction, and the second member has a hole that receives a part of the protrusion.