Methods of operating an image-based self-service check depositing terminal to improve locating a pre-defined check field and an apparatus therefor

An apparatus for use in an image-based self-service check depositing terminal, the apparatus comprising:

• a check acceptor for receiving from a self-service depositor a check to be deposited;
• a radiation emitting device including (i) an energizeable infrared radiation source, and (ii) an energizeable non-infrared radiation source;
• an image lift device for lifting an image of a check as the check passes by the image lift device;
• a character reader for reading check data from a captured check image;
• and
• a processor for (i) controlling the check acceptor to transport the check to the image lift device, (ii) controlling the radiation emitting device to energize the infrared radiation source after the check has been transported to the image lift device, (iii) when the infrared radiation source is energized, controlling the image lift device to provide a captured infrared check image which has improved contrast between at least one pre-printed character on the check and non-pre-printed check data on the check, (iii) when the non-infrared radiation source is energized, controlling the image lift device to provide a captured non-infrared check image, (iv) locating a check field using the captured infrared check image, (v) controlling the character reader to read from the captured non-infrared check image check data contained in the check field which has been located using the captured infrared check image, (vi) controlling the check acceptor to accept the check for deposit when the character reader is able to be read check data from the located check field in the non-infrared check image, and (vii) controlling the check acceptor to reject the check for deposit when the character reader is unable to read check data from the located check field in the non-infrared check image.