string imagePath = @"C:UsersMePicturesrubic.png";
byte[] imageBytes = File.ReadAllBytes(imagePath);

using (var conn = new OleDbConnection(
    @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:Dataaccess.mdb"))
{
    using (var cmd = new OleDbCommand(
        "INSERT INTO tblImages ([image], [name]) VALUES (@1, @2)", conn))
    {
        conn.Open();
        cmd.Parameters.AddWithValue("@1", imageBytes);
        cmd.Parameters.AddWithValue("@2", "Rubic's cube");
        cmd.ExecuteNonQuery();
    }
}

string imageSavePath = @"C:UsersMeDesktoptest.png";
byte[] imageBytes;

using (var conn = new OleDbConnection(
    @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:Dataaccess.mdb"))
{
    using (var cmd = new OleDbCommand(
        "SELECT [image] FROM tblImages WHERE id = 1", conn))
    {
        conn.Open();
        imageBytes = (byte[])cmd.ExecuteScalar();
    }
}
File.WriteAllBytes(imageSavePath, imageBytes);