Abstract: An LED printer has a photosensitive drum, a resist roller for feeding a printing medium to the photosensitive drum at a first constant speed, a fixing device for discharging the printing medium from the photosensitive drum at a second constant speed, a separation type LED head arranged zigzag, and a printing control circuit for detecting a position of the printing medium fed by the resist roller or the fixing device and adjusting printing timings of the first portion LED head and the second portion LED head based on the detected position and the LED head interval. The LED printer can normally correct a print length in each of a front end region and a rear end region of a sheet.

Abstract: The LED printer includes: a photosensitive drum; a resist roller for feeding a printing medium to the photosensitive drum at a first constant speed; a fixing device for discharging the printing medium from the photosensitive drum at a second constant speed; a separation type LED head arranged zigzag; and a printing control circuit for detecting a position of the printing medium fed by the resist roller or the fixing device and adjusting printing timings of the first portion LED head and the second portion LED head based on the detected position and the LED head interval. The LED printer can normally correct a print length in each of a front end region and a rear end region of a sheet.

Abstract: Provided is an adder in which all of circuits can be constituted by CMOS transistors, a process is simplified, and a chip size can be reduced as compared with a conventional art. The adder according to the present invention includes: a first VI converter and a second VI converter that allow a current corresponding to an input voltage to flow therein; and a current addition resistor having one end commonly connected to output terminals of the first VI converter and the second VI converter and another end grounded, which is adjustable in a resistance value.

Abstract: According to the present invention there is provided a cleaning agent composition capable of removing the foulants deposited in gas turbine air compressors even during their operation and thereby cleaning the compressors.That is, there is provided a cleaning agent composition comprising(A) a solvent component consisting of a combination of a particular monovalent aliphatic alcohol-ethylene glycol adduct and a particular phenol-ethylene glycol adduct, and(B) a surfactant component consisting of a combination of a particular polyethylene glycol mono(alkylphenol) ether and an ammonium or amine salt of a particular fatty acid. Said composition is diluted with purified water and used for cleaning of gas turbine air compressors, particular their turbine blades.