The phrase "logo image" refers to a visual representation of a company or brand. It is a symbol or picture that helps people recognize and identify the organization. Full definition
The Raikes opened their first Larry's Giant Subs in 1982 and incorporated into the company logo the image of King Kong on the Empire State Building, holding a giant sandwich as a tribute to their home state and their larger - than - life sandwiches. (fooddrink-magazine.com)
For example, if someone finds the How - To Geek logo image in your cache, they know you've visited How - To Geek. (howtogeek.com)