TCD1706DG linear ccd sensor TCD1103GFG ccd linear image sensor TCD2711DG toshiba ccd TCD2712DG toshiba sensor toshiba linear ccd TCD2715DG ccd linear TCD2717BFG electronic image sensor TCD1711DG toshiba linear image sensor cmos linear image sensors electronic sensor linear sensor Toshiba image sensor types of image sensors cmos image sensor TCD1209DG cmos sensor TCD2564DG ccd image sensors TCD2565BFG cmos linear image sensor TCD2566BFG linear image sensor