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| IA2008-MB20A Contact image sensor heads Monochrome image sensor head (8pixel / mm) IA2008-MB20A The IA2008-MB20A is a state-of-the-art compact, lightweight A4-size monochrome image sensor head that resulted from the combination of ROHM's LSI circuit technology and thermal printhead mounting technology. Applications Facsimiles Image scanning devices Features 1) The amplifiers, resistors, capacitors, and other discrete components that were normally externally attached, are built into the sensor IC. 2) Compact body and lightweight achieved by the placement of the LED light source and sensor IC on the same board. 3) Uses a special ROHM developed prism that provides superior light gathering characteristics and uniform light dispersion. 4) Uses a ceramic board as the base board for minimal temperature fluctuations and uniform thermal dispersion. 5) This is excellent in the point of (gamma) characteristics, and it realizes clear gradation. (Exceptionally clear print quality is given by all bits conpensation in the both case of dark output and white output.) External dimensions (Units : mm) No.1 Pixel Paper Feed Direction (6) 2320.5 216 (Effective Reading Width : 212) 2.250.2 10.50.5 17.50.3 4-1.9 Effective Depth7 (0.16) Max.2 11.180.3 3.750.5 (133) A (49.5) (13.8) (25) (1.41) No.7 (10.4) No.1 Notes : 1. Curvature of glass surface : With the A-direction positive, 0 to 0.22 with respect to the cover glass. 2. The frame material is UL94V-0. (Connecter part number) Socket Housing : IL-Z-7S-S125C3 (JAE) Socket Contact : IL-Z-C3-A-15000 (JAE) PIN No. No.1 No.2 No.3 No.4 No.5 No.6 No.7 130.3 5.50.5 SIGNAL Ao GND VDD SI CLK GLED VLED IA2008-MB20A Contact image sensor heads Characteristics Parameter Effective scanning width Primary scan dot density Total dot number Power supply voltage Scanning speed Clock frequency Maximum dynamic range Dark output Operating temperature Symbol - - - VDD SLT CLK VRmax Vodmax - Typ. 212 8 1728 5 5 500 1.6 550 5~45 Unit mm pixel / mm dots V ms / line kHz V mV C Pin assignments No. 1 2 3 4 5 6 7 Circuit AO GND VDD SI CLK GLED VLED I/O O I I I I I I Functions Analog output Ground Power supply Serial-in Clock LED ground LED power supply IA2008-MB20A Contact image sensor heads Timing chart (a) CLK Timing Chart 1/fCLK tw1 tw2 0 1 11 12 13 CLK tSETUP tHOLD SI ts Ao 1pixel 2pixel Fig.1 (b) Data Output Timing Chart After turning on the SI pulse, the analog output shape starts from the setting up point of 12CLK pulse. 0 2 4 6 8 10 12 14 16 CLK SI 1 2 3 4 5 Ao Note) The CLK section area which is over the effective pixel numbers (Output blank part) cannot be used as the analog Output standard level. IA2008-MB20A Contact image sensor heads Equivalent circuit VDD 0.1Fx2 GND 1 1728 AO SI 1728 BIT SHIFT REGISTER CLK VLED GLED Fig.2 |
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