An inspection device of the present invention includes: THz wave irradiation unit for irradiating a specimen with THz waves; a THz wave sensing unit for detecting transmitted waves or reflected waves of the THz waves emitted to the specimen; and an information processing unit for acquiring intensity distribution of the transmitted waves of the reflected waves of the specimen from the intensity data of the transmitted waves or the reflected waves of the specimen irradiated with the THz waves, wherein the information processing unit acquires 2-dimensional intensity distribution of the transmitted waves or reflected waves, and detects whether a foreign matter is adhering to the specimen by comparing the intensity distribution obtained when the specimen without attachment of the foreign matter is detected and the intensity distribution obtained when the specimen is detected at the time of inspection. The specimen is a sheet of paper, for example.

A paper management system setting a paper information piece of paper stored in a sheet feeding unit in an image forming apparatus from a list of paper information pieces registers the paper information pieces with a favorite group, displays a list of the paper information pieces for each favorite group, and enables the list of the paper information pieces to be associated with a paper feed unit through the screen displaying the list.

A method for quantitating the amount of lint shed from a paper towel, the method comprising: preparing a sample of paper towel to be analyzed; depositing lint from the sample onto a substantially lint-free surface by moving the sample thereupon in a specific pattern; collecting the lint deposited on the surface, wherein collecting the lint deposited on the surface comprises, substantially immediately upon depositing lint from the sample onto the surface, washing the deposited lint from the surface into a tared, cleaned, empty vessel; and determining the amount of collected lint.

According to an example aspect of the present invention, there is provided a method, comprising: controlling suction with predetermined force in a known measurement area to a moving cardboard or paper web in a manufacturing process, detecting on-line measurement information on deviation of the moving cardboard or paper web in the manufacturing process caused by the suction with predetermined force in the known measurement area, and determining elastic modulus of the moving cardboard or paper web in the manufacturing process on the basis of the measured deviation.

The present invention relates to a measurement system for use in a corrugating machine and a corrugating machine and a method of checking the process for producing paper adhesions with such a measurement system. The measurement system according to the invention for use in a corrugating machine comprises a measurement device. The measurement device can detect electromagnetic waves in the infrared range here and is aimed at a region of a transportation device of the corrugating machine in the direction of transportation downstream of an adhesion station of the corrugating machine.

The quality measurement method for a long sheet material W includes measuring cellulose fibers, % moisture, and % ash of the paper web W by using area cameras 1102 to 1106 having an infrared light receiving element and a light source 1100 having an infrared light emitting LED element. Performance check for the infrared cameras 1102 to 1106 over the entire width and correction of measured values are performed by using consistency between measured values for the same point in an overlap area measured by adjacent cameras and reference samples 1107 at the off-sheet positions provided at both sides.

An apparatus adapted to examine a paper web includes a rotatable first bobbin, a rotatable second bobbin, and a first testing device. The first bobbin has a paper we wound thereabout that has transverse bands spaced apart along a length thereof. The second bobbin is arranged to receive the paper web from the first bobbin with a paper web path defined between the first and second bobbins. The first testing device is disposed along the paper web path and is arranged to nondestructively measure a diffusivity of one of the transverse bands of the paper web.

A measurement apparatus of a moving paper web, includes an optical radiation source that outputs optical radiation toward a scattering element of the measurement apparatus. The scattering element scatters the optical radiation, and a transmitting surface of the scattering element directs the optical radiation in a scattered manner toward the moving paper web. A distance between said transmitting surface of the scattering element and a surface of the paper web is known, and the transmitting surface and a detector of the apparatus are on opposite sides of the paper web. The detector receives at least a part of the optical radiation, which is side-scattered from the moving paper web. The detector determines a moisture value and a dry weight of the paper web on the basis of spectral information on the received optical radiation and the known distance.

A formation detection system comprising: (a) one or more sensors and (b) one or more lights that illuminate a location of interest so that the one or more sensors can monitor the location of interest; wherein one of the one or more sensors are located substantially planar with a wire of a paper machine and proximate to a slice opening so that the one of the one or more sensors is adjacent to a cut through so that the one of the one or more sensors is capable of measuring stock above the wire and removed water below the wire, and wherein the one of the one or more sensors is capable of measuring a distance between an impingement location of a stock jet and the wire from a forming board.

A monitoring system comprising: (a) one or more sensors that monitor activity, amplitude, size, scale, duration of activity or a combination thereof of stock on a paper machine and (b) a control system in communication with the one or more sensors and one or more foil sections within the paper machine; wherein the control system measures the activity, amplitude, size, scale, duration of activity or a combination thereof of the stock and correlates the activity, amplitude, size, scale, duration of activity or a combination thereof to formation of fibers within the stock so that an angle, height, or both of the one or more foil sections are adjusted to change the activity, amplitude, size, scale, duration of activity or a combination thereof in the stock.