发明名称 IMAGE READING DEVICE, IMAGE FORMING APPARATUS, AND SHADING DATA PROCESSING METHOD
摘要 An image reading device includes a first unit to read one surface of a document in a first area facing a document path, a second unit disposed in the first area to read the other surface of the document, a first reference member facing the first unit at a first distance therefrom at a second position in a second area not facing the path, a second reference member facing the first unit at a second distance therefrom at a first position in the first area, a third reference member facing the second unit at the second distance therefrom, and a correction unit to correct, based on a difference between first data generated through reading of the first member by the first unit and second data generated through reading of the second member by the first unit, third data generated through reading of the third member by the second unit.
申请公布号 US2017111549(A1) 申请公布日期 2017.04.20
申请号 US201615276892 申请日期 2016.09.27
申请人 MIYAZAKI Susumu;YOSHIDA Tomoyuki;INUI Tetsuo;IMOTO Shigefumi 发明人 MIYAZAKI Susumu;YOSHIDA Tomoyuki;INUI Tetsuo;IMOTO Shigefumi
分类号 H04N1/409;H04N1/203;H04N1/031;H04N1/12 主分类号 H04N1/409
代理机构 代理人
主权项 1. An image reading device comprising: a first image reading unit movable between a first area facing a document transport path and a second area not facing the document transport path, and capable of reading, in the first area, a first surface of a document transported on the document transport path; a second image reading unit disposed in the first area and capable of reading a second surface of the document; a first shading reference member facing the first image reading unit at a first distance therefrom when the first image reading unit is located at a second position in the second area; a second shading reference member facing the first image reading unit at a second distance therefrom across the document transport path when the first image reading unit is located at a first position in the first area; a third shading reference member facing the second image reading unit at the second distance therefrom across the document transport path; and a correction unit to correct third shading data based on a difference between first shading data and second shading data, the first shading data generated through reading of the first shading reference member by the first image reading unit, the second shading data generated through reading of the second shading reference member by the first image reading unit, and the third shading data generated through reading of the third shading reference member by the second image reading unit.
地址 Tokyo JP