Head support mechanism in magnetic card reader
AssigneeSankyo Seiki Mfg. Co., Ltd.
InventorKoji Oguchi
Life of this patent
Estimating the term…
Abstract
An improved head support mechanism for a magnetic card reader is described which has a support plate for each magnetic head. The magnetic head is supported to be capable of moving in the plane perpendicular to the support plate and rocking around an axis parallel to the direction in which the card is moved. A projection is placed in a predetermined position on each support plate. A leaf spring contacts each projection at the predetermined position to apply pressure and ensure that the magnetic head contacts the magnetic card to be read.
Claims11
A head support mechanism in a magnetic card reader comprising:
- head support plates which support magnetic heads such that said magnetic heads can rock on an axis parallel to the direction in which a magnetic card is transferred;
- a leaf spring having a pressure applying portion which applies pressure to said head support plates in a direction to cause said magnetic heads to contact a magnetic card transferred through said reader;
- and
- said head support plates having a projecting portion extending in the direction perpendicular to the card transferring direction to contact said pressure applying portion of said leaf spring, whereby said leaf spring applies pressure to said projecting portions.
In a head support mechanism for a magnetic card reader having first and second head support plates which support first and second magnetic heads;
- which plates have positioning pins that permit the magnetic heads to rock on a longitudinal axis which axis is parallel to the direction in which the magnetic card is transferred;
- the reader having a leaf spring with first and second arms to apply pressure on said support plates in a direction that causes the magnetic heads to contact whatever magnetic card is being transferred through the reader, the improvement comprising:
- first and second projecting portions formed on the first and second head support plates respectively, said portions projecting in a direction that contacts the pressure applying arms of the leaf spring,
- said projecting portions of the head support plates having a predetermined position relative to the axis between the positioning pins of each head support plate to assure that the force transmitted from the leaf spring is transferred to the corresponding head support plate at said predetermined position.
A head support mechanism in a magnetic card reader comprising:
- head support plates which support magnetic heads such that said magnetic heads can rock on an axis parallel to the direction in which a magnetic card is transferred;
- a leaf spring having a pressure applying portion which applies pressure to said head support plates in a direction to cause said magnetic heads to contact a magnetic card transferred through said reader;
- said head support plate having a projecting portion extending in the direction perpendicular to the card transferring direction to contact said pressure applying portion of said leaf spring, whereby said leaf spring applies pressure to said projecting portions;
- wherein:
- said projecting portion of said head support plate is elongated for a given length to ensure that said pressure applying portion and said projecting portion come in contact with each other;
- and
- said head support plates are restrained by two positioning pins in the card transferring direction;
- said axis being defined by a line between said positioning pins and said magnetic heads which are supported by said head support plates being capable of rocking about said axis.
A head support mechanism in a magnetic card reader comprising:
- head support plates which support magnetic heads such that said magnetic heads can rock on an axis parallel to the direction in which a magnetic card is transferred;
- a leaf spring having a pressure applying portion which applies pressure to said head support plates in a direction to cause said magnetic heads to contact a magnetic card transferred through said reader;
- said head support plate having a projecting portion extending in the direction perpendicular to the card transferring direction to contact said pressure applying portion of said leaf spring, whereby said leaf spring applies pressure to said projecting portions;
- wherein:
- said projecting portion of said head support plate is elongated for a given length to ensure that said pressure applying portion and said projecting portion come in contact with each other;
- and
- said pressure applying portion of said leaf spring is a warped portion of said leaf spring.
Dependencies are inferred from the claim text.