Plastic-like compositions having ultra-low contents of petroleum derived materials are provided. In specific embodiments, agents provide advanced interactive graphics and communications back to a server. The break-in head holds multiple pad conditioning disks and presses the plurality of pad conditioning disks against the moving polishing pad. In an illustrative embodiment the clock generator comprises a variable-frequency clock source, and a voltage regulator senses an output voltage of the charge pumps, generates a reference voltage based on a currently selected frequency of the variable-frequency clock source, and temporarily disables the charge pumps when the output voltage is greater than the reference voltage. The sensor-front-end processor acquires and conditions the signals from the sensors consecutively one after another. The image reading apparatus further includes a type discriminating device for discriminating whether the film original is a first film original or a second film original having different film sizes, and a reading scope modifying device for modifying the reading scope of the image reading means according to the result of discrimination of the type discriminating means.