Data reader and image forming apparatus incorporating same

摘要

A data reader includes a memory board provided to a removable member and a reading member including a reading terminal. The memory board includes a positioning opening, a ground terminal provided to the positioning opening, and a contact terminal. The reading member includes an engagement projection that fits in the positioning opening and is disposed adjacent and parallel to the reading terminal. The engagement projection includes a uniform diameter portion, a tapered portion extending from the uniform diameter portion, and an apparatus-side ground terminal to contact the ground terminal of the memory board when the engagement projection fits in the positioning opening. The apparatus-side ground terminal includes a portion projecting laterally from the uniform diameter portion from an end of the uniform diameter portion toward a reading member base and an extended portion at the end of the uniform diameter portion, covered with the tapered portion.

主权项

1. A data reader for use with a memory board including a memory, the memory board disposed on a removable member removably attachable to a mount of an image forming apparatus, the memory board further including a positioning opening, a ground terminal at the positioning opening, and a planar contact terminal, the contact terminal disposed parallel to the ground terminal, the data reader comprising:
a reading terminal projecting from a reading member base to read out data from the memory; an engagement projection to be inserted in the positioning opening, the engagement projection disposed adjacent and parallel to the reading terminal, the engagement projection including: a uniform diameter portion; a tapered portion extending from an end of the uniform diameter portion; an apparatus-side ground terminal to contact the ground terminal of the memory board when the engagement projection is in the positioning opening, the apparatus-side ground terminal projecting laterally from the uniform diameter portion; and a recess in an outer surface of the engagement projection at the uniform diameter portion and the tapered portion, the recess extending from the uniform diameter portion to the tapered portion and stopping before a deepest surface of the recess reaches an outer surface of the tapered portion, the recess including a side wall at the tapered portion which is not parallel to an axial direction of the engagement projection, the recess having disposed therein the apparatus-side ground terminal.