Abstract:
The correction value calculating method of the reading apparatus includes a reading value acquiring step of acquiring reading values at respective pixels for respective reading positions at both ends of a reading range of the reference member and reading values at respective two or more pixels for respective reading positions in the reading range except the reading positions, and reading values for respective two or more reading positions at respective pixels while relatively moving an image pickup element in which a plurality of pixels are arranged along a first direction and the reference member which becomes a reference for shading correction, and a correction value calculating step of calculating a correction value for shading correction based on the acquired reading values.
Abstract:
A system for ejecting droplets of a fluid is described. The system includes a substrate having a flow path body that includes a fluid pumping chamber, a descender fluidically connected to the fluid pumping chamber, and a nozzle fluidically connected to the descender. The nozzle is arranged to eject droplets of fluid through an outlet formed in an outer substrate surface. The flow path body also includes a recirculation passage fluidically connected to the descender. The system for ejecting droplets of a fluid also includes a fluid supply tank fluidically connected to the fluid pumping chamber, a fluid return tank fluidically connected to the recirculation passage, and a pump fluidically connecting the fluid return tank and the fluid supply tank. In some implementations, a flow of fluid through the flow path body is at a flow rate sufficient to force air bubbles or contaminants through the flow path body.
Abstract:
An inkjet printer includes: an optical reading device that optically reads at least one of an unprinted area on a printing paper sheet, a test chart printed area on a first printing in which a test chart is printed, and an image printed area on a second printing in which an image other than a test chart is printed, and acquires image data on the read area; an abnormal noise detecting device that analyzes the acquired image data and detects abnormal noise on a surface of a printing paper sheet; and a control device that changes at least a setting related to detection of an ejection state of an inkjet head or a printing state, or a setting related to printing correction, based on a state of the detected abnormal noise.
Abstract:
A system for ejecting droplets of a fluid is described. The system includes a substrate having a flow path body that includes a fluid pumping chamber, a descender fluidically connected to the fluid pumping chamber, and a nozzle fluidically connected to the descender. The nozzle is arranged to eject droplets of fluid through an outlet formed in an outer substrate surface. The flow path body also includes a recirculation passage fluidically connected to the descender. The system for ejecting droplets of a fluid also includes a fluid supply tank fluidically connected to the fluid pumping chamber, a fluid return tank fluidically connected to the recirculation passage, and a pump fluidically connecting the fluid return tank and the fluid supply tank. In some implementations, a flow of fluid through the flow path body is at a flow rate sufficient to force air bubbles or contaminants through the flow path body.