The printing apparatus includes a light source that emits light to a first surface of a printing sheet; a sensor that detects the light reflected from the printing sheet; a reflection member located at a position facing the sensor and coming into contact with a second surface opposite to the first surface of the printing sheet; and a control unit configured to determine a type of the printing sheet based on a feature amount obtained by the sensor detecting the light from a plurality of positions of the printing sheet being conveyed, wherein a first area and a second area whose reflectance is lower than that of the first area are included in the reflection member and a position corresponding to the first area and a position corresponding to the second area are included in the plurality of positions.

The printing apparatus includes a light source that emits light to a first surface of a printing sheet; a sensor that detects the light reflected from the printing sheet; a reflection member located at a position facing the sensor and coming into contact with a second surface opposite to the first surface of the printing sheet; and a control unit configured to determine a type of the printing sheet based on a feature amount obtained by the sensor detecting the light from a plurality of positions of the printing sheet being conveyed, wherein a first area and a second area whose reflectance is lower than that of the first area are included in the reflection member and a position corresponding to the first area and a position corresponding to the second area are included in the plurality of positions.

An apparatus is provided for processing a substrate on a support body. The apparatus comprises the support body, at least one registration member, a carriage unit and a controller. The support body is arranged for supporting the substrate. The at least one registration member is adapted for registering the substrate on the support body by engaging the substrate in contact to the at least one registration member, when the at least one registration member is arranged into a registering state. The carriage unit is movably arranged relative to the support body for processing the substrate. The control unit is arranged for executing the steps of: a) selecting a position of the substrate on the support body; b) selecting a first registering position on the support body of a first registration member for registering the substrate at the selected position on the support body in the registering state, when engaging the substrate in contact with the first registration member being arranged in the first registering position; and c) moving the carriage unit relative to the support body to a processing position for processing the substrate, when the substrate is registered at the selected position on the support body by engaging the substrate in contact with the first registration member, which is arranged in the registering state in the first registering position.

An apparatus is provided for processing a substrate on a support body. The apparatus comprises the support body, at least one registration member, a carriage unit and a controller. The support body is arranged for supporting the substrate. The at least one registration member is adapted for registering the substrate on the support body by engaging the substrate in contact to the at least one registration member, when the at least one registration member is arranged into a registering state. The carriage unit is movably arranged relative to the support body for processing the substrate. The control unit is arranged for executing the steps of: a) selecting a position of the substrate on the support body; b) selecting a first registering position on the support body of a first registration member for registering the substrate at the selected position on the support body in the registering state, when engaging the substrate in contact with the first registration member being arranged in the first registering position; and c) moving the carriage unit relative to the support body to a processing position for processing the substrate, when the substrate is registered at the selected position on the support body by engaging the substrate in contact with the first registration member, which is arranged in the registering state in the first registering position.

A print system includes a first printer which performs printing on a sheet while conveying the sheet and a second printer which receives the sheet conveyed from the first printer and performs printing on the sheet while conveying the sheet. The second printer includes a second printing unit, a second registration roller, a second pre-registration roller, a sheet detector, and a second controller. The second controller controls an operation of the second pre-registration roller and an operation of the second registration roller based on a timing of a detection of the sheet by the sheet detector.

A print system includes a first printer which performs printing on a sheet while conveying the sheet and a second printer which receives the sheet conveyed from the first printer and performs printing on the sheet while conveying the sheet. The second printer includes a second printing unit, a second registration roller, a second pre-registration roller, a sheet detector, and a second controller. The second controller controls an operation of the second pre-registration roller and an operation of the second registration roller based on a timing of a detection of the sheet by the sheet detector.

An image processing apparatus for a printing apparatus. The image processing apparatus includes a recording position acquiring device for acquiring recording positions of a reference image printed by a reference print head and a target image printed by a target print head, a positional deviation amount calculating device for calculating a deviation amount due to a skew with respect to the recording positions of the reference image and the target image, and a positional deviation interpolation image converting device, when there is a remainder of the deviation amount and the predetermined intervals, for adding a weight based on the remainder, and adding a smaller weight than the weight to the reference image or the target image without a remainder and adjoining the reference image or the target image with the remainder, thereby converting the image into a width direction positional deviation interpolation image.

An image processing apparatus for a printing apparatus. The image processing apparatus includes a recording position acquiring device for acquiring recording positions of a reference image printed by a reference print head and a target image printed by a target print head, a positional deviation amount calculating device for calculating a deviation amount due to a skew with respect to the recording positions of the reference image and the target image, and a positional deviation interpolation image converting device, when there is a remainder of the deviation amount and the predetermined intervals, for adding a weight based on the remainder, and adding a smaller weight than the weight to the reference image or the target image without a remainder and adjoining the reference image or the target image with the remainder, thereby converting the image into a width direction positional deviation interpolation image.

A printing system includes a first imaging unit configured to print a first image and a registration mark associated with the first image on a web contemporaneously during a production run, and a sensor configured to detect the registration mark at a point where the registration mark is within a second imaging unit. The printing system further includes a controller configured to calculate an offset along a width direction of the web based on the registration mark and to instruct the second imaging unit to print the second image on the web. The second image is shifted in its entirety in accordance with the calculated offset and is printed on the same side of the web as the first image.

A printing system includes a first imaging unit configured to print a first image and a registration mark associated with the first image on a web contemporaneously during a production run, and a sensor configured to detect the registration mark at a point where the registration mark is within a second imaging unit. The printing system further includes a controller configured to calculate an offset along a width direction of the web based on the registration mark and to instruct the second imaging unit to print the second image on the web. The second image is shifted in its entirety in accordance with the calculated offset and is printed on the same side of the web as the first image.