Abstract: An image forming apparatus, including an image carrier, an image forming section for forming toner image on the image carrier, an image transfer device for transferring the toner images from the image carrier to a transfer material, and a registration member for conveying the transfer material to a position where the image transfer device transfers the toner image in synchronization with the image formation conducted by the image forming section, wherein the registration member includes a drive roller having a core and a rubber layer formed on the core, and a driven roller coming into contact with the drive roller, wherein the drive roller satisfies formula (1), d/D?57.6 L?1.2, and formula (2), d÷0.5, where D is diameter of the drive roller, d is thickness of the rubber layer, and L is conveyance distance from the registration member to the image transferring position.

Abstract: This invention relates to an ink jet printer including a printing-head which discharges photo-curing ink toward a printing sheet, and a light irradiation unit which irradiates the ink landing surface of the printing sheet with light, wherein the light irradiation unit irradiates the ink landing surface by optical scanning via a reflecting member with rays having a wavelength range in which ink is cured, and an image printing apparatus having the ink jet printer.

Abstract: An ink jet printer has: a vibration detection section to receive ink jetted from the nozzles and output a detection signal having an amplitude corresponding to a vibration generated when the ink lands; a sampling section to sample an amplitude value of the detection signal by a predetermined sampling clock signal; a storing section to store an amplitude value data of the detection signal sampled by the sampling section; a judging section to judge a jet failure of the nozzles based on the amplitude value data of the detection signal in the storing section; and a control section to control to jet the ink continuously a plurality of times with a jet drive cycle which is set by multiplying a standard drive waveform time of an ink jet signal from the nozzles by an odd number not less than five when detecting a jet failure of the nozzles.

Abstract: An ink jet printer has an ink jet section for jetting ink from nozzles, a vibration detection section for detecting a jet failure of the nozzles, which is provided ahead in an ink droplet jetting direction from the nozzles, an ink droplet receiving section for receiving an ink droplet jetted from the nozzles, which is interposed between the nozzles and the vibration detection section, and a control section for controlling a maximum diameter of an ink droplet jetted from the nozzles when detecting a jet failure of the nozzles to be larger than that when recording an image.

Abstract: An ink jet printer for recording an image on a recording medium by jetting ink from nozzles having: an ink jet section which is provided with the nozzles; and an ink droplet detection section for detecting an impact force generated when an ink droplet jetted from the nozzles lands with a piezoelectric element, which is provided ahead in an ink droplet jetting direction from the nozzles.

Abstract: An ink jet printer having: an ink heating device for heating an ink whose viscosity decreases as temperature increases; a printing head for jetting an ink heated by the heating device onto a recording medium; a carrying device for carrying the recording medium while supporting the recording medium to face a nozzle-plate of the printing head; and a cooling device for cooling the recording medium in an upstream side with respect to a position where an ink placed on the recording medium is cured, in a carrying direction of the recording medium by the carrying device.

Abstract: An image recording device, comprises: a recording head which discharges an ultraviolet-ray curable ink, which is cured as irradiated with ultraviolet rays; an ultraviolet light source which generates ultraviolet rays to cure the ultraviolet-ray curable ink; a first heating section which heats the ultraviolet-ray curable ink on a recording medium after an irradiation of the ultraviolet rays; a pressure section which pressurizes the recording medium after an irradiation of the ultraviolet rays; and a controller which controls the first heating section to start heating the ultraviolet-ray curable ink on the recording medium after the last discharge of the ink to an arbitrary area on the recording medium, a first predetermined time between the last discharge and the starting heat is predetermined, and controls the first heating section to heat the ultraviolet-ray curable ink within a second predetermined time.

Abstract: An image printing apparatus, including:

Abstract: In an image recording apparatus equipped with plural printing heads each for jetting ink drops having a photo-setting property towards a recording medium, a conveyance unit for conveying the recording medium to the printing heads, and each of plural light radiation devices for radiating light to the ink drops landed on the recording medium to harden, is arranged at the downstream side of each of the plural printing heads, one having largest light energy, which is located at the most downstream position among the plural light radiation devices is determined at least to satisfy the light energy necessary for hardening of the ink drops jetted by any one of the printing heads positioned upstream thereof, and the light energy becomes smaller gradually for every light radiation device in the order from the light radiation device at the most downstream position to those at more upstream positions.

Abstract: This invention relates to an ink jet printer including a printing-head which discharges photo-curing ink toward a printing sheet, and a light irradiation unit which irradiates the ink landing surface of the printing sheet with light, wherein the light irradiation unit irradiates the ink landing surface by optical scanning via a reflecting member with rays having a wavelength range in which ink is cured, and an image printing apparatus having the ink jet printer.

Abstract: An image forming apparatus providing services for general users, capable of getting rid of trouble to collect use charges.

Abstract: In a device for adjusting an optical system arranged in such that a scanning mirror is moved in a direction perpendicular to a main scanning line so as to reflect a line-shaped image light line by line, a first V-mirror is moved in synchronization with the scanning mirror and changes a direction of the line-shaped image light reflected from the scanning mirror toward a lens, a second V-mirror changes a direction of the line shaped image light coming from the lens toward a guide mirror, and a guide mirror projects the line-shaped image light onto a photoreceptor, the device includes a mechanism to change positions of at least two of the first V-mirror, the second V-mirror and the guide mirror so as to place the line-shaped image light at a predetermined position on the photoreceptor; and a mechanism to regulate a tilting angle of the guide mirror so as to make an incident angle of the line-shaped image light on the photoreceptor to a predetermined angle.

Abstract: An electron energy spectrometer having an electron energy analyzer equipped with plural detectors including a reference detector. The energy of electrons impinging on the reference detector is stepped in increments. The value of these increments can be set at will. The spectrometer has improved detection accuracy and improved detection sensitivity. The spectrometer irradiates the surface of a sample with an electron beam. The energy of the electron beam is swept. The intensities of electrons ejected from the sample surface are analyzed. This instrument utilizes the multidetector scheme. Data about the intensities of the electrons is collected. Interpolation calculations are performed at each value of the energy according to the collected data.

Abstract: A simple imaging XPS (X-ray photoelectron spectrometry) system using a coaxial spherical sector electron energy analyzer. The system can obtain a two-dimensional photoelectron image of the analyzed sample surface. The energy analyzer (1) includes an input slit (11) extending in the y-direction. An image representing the distribution of the energies of photoelectrons ejected from the sample (S) is focused onto the input slit (11) by an input lens system (5). Only photoelectrons passed through the slit (11) are analyzed by the analyzer (1) and detected by a multichannel detector (12) disposed at least in the y-direction in the focal plane of the analyzer. A pair of deflection plates (10) capable of deflecting the image representing the distribution in the x-direction are mounted within the input lens system (5). Photoelectrons distributed in the y-direction are detected simultaneously by the detector (12).

Abstract: A scanning Auger spectrometer using a cylindrical mirror analyzer. This analyzer is set to a given value Eo. A deviation .DELTA.E of the energy actually measured by the analyzer from the set value Eo occurs. The relation of the deviation .DELTA.E to the coordinates of each analyzed point is measured. During the measurements, the set energy is shifted in response to the position hit by the electron beam according to information obtained from the measurements in such a way that the deviation does not take place.