AR-161

(8) Toner supply motor drive circuit

The IC31 is the motor control IC, which generates the pseudo AC waveform with the pulse signals (TM, TM-) outputted from ASIC, driving the toner supply motor.

3. CCD PWB

The CCD PWB is provided with the CCD (Charge-Coupled Device), the differential amplifier which amplifies image signals, and the AD convertor which converts the amplified image signals into digital signals.

The DC power and the pulse supply pins necessary for operating the CCD image sensor are the power source (CD pin), GND (SS pin), shift pulse (SH pin), transfer pulse (φ 1 pin), (φ 2 pin), reset pulse (/RS pin), clamp pulse (/CP pin), and sampling (/SP pin).

Photo data are stored in the light receiving element at the center of the CCD by the SH signal. Even number pixel data are sent to one of the two shift registers which are positioned at both ends of the light receiving element, and odd number pixel data are sent to the other shift register. The time interval between inputting two SH signals is called the photo accumulation time.

The signals are transfered to the register, then to the shift register sequentially by transfer pulses φ 1 and φ 2 and to the floating capacitor section where electric signals are voltage-converted. Electric charges from the even number pixel shift register and the odd number pixel shift register are flowed to the floating capacitor section alternatively.

The /RS signal is the reset signal of the CCD output signal. The CCD output is expressed as electric charges equivalently accumulated in the capacitor. Therefore, to take the CCD output data one pixel by one pixel, one output data must be cleared after it is outputted. The /RS signal is used for that operation.

The /SP pulse signal is the peak hold signal of the signal voltage.

The output signal from the CCD is amplified by about 4.7 times greater in the differential amplifier circuit in the CCD PWB. Differential amplification is made for the signal output (OS) and the compensation output (DOS).

The amplified CCD signal output is sent to the clamp circuit. In the clamp circuit, the black level is clamped to 2V at the BCLK signal timing by the analog switch. The clamped voltage is maintained for one line by the coupling capacitor. The clamped analog signal is impedance-converted and inputted to the AD convertor.

The analog signal inputted to the AD convertor is converted into 8bit digital data and passed to the PCU PWB.

The machine employs the TCD1501C as the image sensor. The TCD1501C is the reduction type high sensitivity CCD linear sensor of one-output system. 5000 pixels of 7um x 7um are arranged in line to allow scanning of A3 document at 400dpi (16 lines/mm).

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Sharp AR-161, AR-160 specifications Ccd Pwb, Toner supply motor drive circuit
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AR-160, AR-161 specifications

The Sharp AR-161 and AR-160 are monochrome multifunction printers that have made a mark in the office equipment landscape with their impressive features, technologies, and characteristics. Both devices are designed to cater to the needs of small to medium-sized businesses that require reliable, efficient, and compact systems for their printing, copying, and scanning needs.

One of the main features of the Sharp AR-161 and AR-160 is their impressive speed. The AR-161 can produce up to 16 pages per minute (ppm), while the AR-160 offers a slightly lower output at 15 ppm. This makes both models suitable for environments where quick document turnaround is essential. Additionally, both machines have a warm-up time of approximately 20 seconds, ensuring minimal downtime when starting up.

In terms of paper handling, both models come equipped with a 250-sheet paper drawer and a 100-sheet bypass tray, allowing for a variety of media types and sizes. The automatic document feeder (ADF) can accommodate up to 50 sheets, making it easier to handle multi-page documents without manual intervention. This feature enhances workflow efficiency significantly, particularly in busy office settings.

The Sharp AR-161 and AR-160 utilize advanced copying technologies, including a high-resolution scanning capability of up to 600 x 600 dpi. This means that documents are reproduced with clarity and detail, making them suitable for professional presentations and reports. The devices also offer various copying options, such as zoom, collation, and reduction/enlargement, providing versatility for different copying tasks.

Both models are equipped with Sharp's innovative ImageSEND technology, which allows users to scan documents directly to email, network folders, or USB drives with ease. This feature enhances productivity by streamlining the scanning process, ensuring that documents can be shared quickly and efficiently.

Furthermore, energy efficiency is a hallmark of the Sharp AR-161 and AR-160, as both models are ENERGY STAR qualified. This means they are designed to use less energy, helping businesses reduce their environmental impact while also saving on operational costs.

In conclusion, the Sharp AR-161 and AR-160 combine speed, versatility, and energy efficiency in a sleek design. Their advanced copying technologies and smart features make them ideal choices for businesses seeking reliable multifunction devices that can enhance productivity without compromising on quality.
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