Abstract: A communication control device of an embodiment includes a converter and a controller. The converter is input with a second digital data signal prior to input of a first digital data signal and outputs an analog data signal which is an analog signal converted into from the second digital data signal. The first digital data signal is output to a destination device. The controller invalidates the first digital data signal when a voltage corresponding to the analog data signal does not coincide with a predetermined output permission voltage and validates the first digital data signal when the voltage corresponding to the analog data signal coincides with the output permission voltage.

Abstract: A wet type developing device including a developing roller and an anilox roller, the wet type developing device includes: a dual purpose roller being opposite to the surface of the anilox roller, leaving a gap therebetween, upstream of a region of contact between the surfaces of the anilox roller and the developing roller and being in contact with the surface of the developing roller upstream of the region of contact between the surfaces of the anilox roller and the developing roller and being rotationally driven. A surface part of the dual purpose roller is made of a porous member that has flexibility and elasticity.

Abstract: A wet type developing device including a developing roller and an anilox roller, the wet type developing device includes: a dual purpose roller being opposite to the surface of the anilox roller, leaving a gap therebetween, upstream of a region of contact between the surfaces of the anilox roller and the developing roller and being in contact with the surface of the developing roller upstream of the region of contact between the surfaces of the anilox roller and the developing roller and being rotationally driven. A surface part of the dual purpose roller is made of a porous member that has flexibility and elasticity.

Abstract: A communication control device of an embodiment includes a converter and a controller. The converter is input with a second digital data signal prior to input of a first digital data signal and outputs an analog data signal which is an analog signal converted into from the second digital data signal. The first digital data signal is output to a destination device. The controller invalidates the first digital data signal when a voltage corresponding to the analog data signal does not coincide with a predetermined output permission voltage and validates the first digital data signal when the voltage corresponding to the analog data signal coincides with the output permission voltage.

Abstract: A digital sheet-fed printing method includes providing one cycle of printing to print on a series of sheets of paper whose number is equal to the least common multiple of respective numbers of allocated positions; producing a reference signal on the basis of which an image in each color is printed on the sheet of paper; detecting with an image detection sensor means a mutual out of register between images in different colors printed on each sheet of paper in the series, furnishing the printing control means with a detection signal for each sheet of paper from the image detection sensor, and correcting the timing at which each image is printed on each sheet of paper in one cycle of printing so that timings to print the images in different colors on each sheet of paper coincide with one another; and printing images in the different colors.

Abstract: A digital sheet-fed printing method includes providing one cycle of printing to print on a series of sheets of paper whose number is equal to the least common multiple of respective numbers of allocated positions; producing a reference signal on the basis of which an image in each color is printed on the sheet of paper; detecting with an image detection sensor means a mutual out of register between images in different colors printed on each sheet of paper in the series, furnishing the printing control means with a detection signal for each sheet of paper from the image detection sensor, and correcting the timing at which each image is printed on each sheet of paper in one cycle of printing so that timings to print the images in different colors on each sheet of paper coincide with one another; and printing images in the different colors.