Abstract: In an image data conversion device, color image data is represented in gray scale, a histogram of brightness values is created for the gray-scaled image data, it is determined based on the created histogram which image pattern of a plurality of image patterns the gray-scaled image data is classified into, a range subjected to gamma correction and a range fixed to at least one of a minimum value and a maximum value of gray scale are set for each image pattern, and image data conversion including the gamma correction is performed on the gray-scaled image data.

Abstract: In an image data conversion device, color image data is represented in gray scale, a histogram of brightness values is created for the gray-scaled image data, it is determined based on the created histogram which image pattern of a plurality of image patterns the gray-scaled image data is classified into, a range subjected to gamma correction and a range fixed to at least one of a minimum value and a maximum value of gray scale are set for each image pattern, and image data conversion including the gamma correction is performed on the gray-scaled image data.

Abstract: A printer is provided with a roll paper holding portion that holds roll paper without axially supporting the roll paper; a sheet conveying unit that conveys a sheet supplied from the roll paper; a printing unit that executes printing on the sheet; and a roll paper pressing unit that presses the roll paper held in the roll paper holding portion, wherein the roll paper pressing unit is provided with a pressing roller that presses the roll paper and rotates along with the sheet conveyance, and a rotation suppressing portion that suppresses the rotation of the pressing roller.

Abstract: In an image data conversion device, color image data is represented in gray scale, a histogram of brightness values is created for the gray-scaled image data, it is determined based on the created histogram which image pattern of a plurality of image patterns the gray-scaled image data is classified into, a range subjected to gamma correction and a range fixed to at least one of a minimum value and a maximum value of gray scale are set for each image pattern, and image data conversion including the gamma correction is performed on the gray-scaled image data.

Abstract: In an image data conversion device, color image data is represented in gray scale, a histogram of brightness values is created for the gray-scaled image data, it is determined based on the created histogram which image pattern of a plurality of image patterns the gray-scaled image data is classified into, a range subjected to gamma correction and a range fixed to at least one of a minimum value and a maximum value of gray scale are set for each image pattern, and image data conversion including the gamma correction is performed on the gray-scaled image data.

Abstract: In an image data conversion device, color image data is represented in gray scale, a histogram of brightness values is created for the gray-scaled image data, it is determined based on the created histogram which image pattern of a plurality of image patterns the gray-scaled image data is classified into, a range subjected to gamma correction and a range fixed to at least one of a minimum value and a maximum value of gray scale are set for each image pattern, and image data conversion including the gamma correction is performed on the gray-scaled image data.

Abstract: The present invention provides an image data conversion device that can convert color image data to black-and-white image data suitable for a background image. One example embodiment of the present invention is an image data conversion device that represents color image data in gray scale to convert the color image data to black-and-white image data and that includes determination means for determining whether or not the black-and-white image data is data used for a background image; and image data conversion means for converting the color image data to black-and-white image data using brightness values ranging from a background image minimum brightness value to a maximum brightness value when the black-and-white image data is data used for a background image.

Abstract: A printer is provided with a roll paper holding portion that holds roll paper without axially supporting the roll paper; a sheet conveying unit that conveys a sheet supplied from the roll paper, a printing unit that executes printing on the sheet; and a roll paper pressing unit that presses the roll paper held in the roll paper holding portion, wherein the roll paper pressing unit is provided with a pressing roller that presses the roll paper and rotates along with the sheet conveyance, and a rotation suppressing portion that suppresses the rotation of the pressing roller.

Abstract: In an image data conversion device, color image data is represented in gray scale, a histogram of brightness values is created for the gray-scaled image data, it is determined based on the created histogram which image pattern of a plurality of image patterns the gray-scaled image data is classified into, a range subjected to gamma correction and a range fixed to at least one of a minimum value and a maximum value of gray scale are set for each image pattern, and image data conversion including the gamma correction is performed on the gray-scaled image data.

Abstract: The present invention provides an image data conversion device that can convert color image data to black-and-white image data suitable for a background image. One example embodiment of the present invention is an image data conversion device that represents color image data in gray scale to convert the color image data to black-and-white image data and that includes determination means for determining whether or not the black-and-white image data is data used for a background image; and image data conversion means for converting the color image data to black-and-white image data using brightness values ranging from a background image minimum brightness value to a maximum brightness value when the black-and-white image data is data used for a background image.

Abstract: A fixed blade support device includes a biasing member and a fixed blade support member (11). The fixed blade support member (11) includes a base surface portion (11a), an upright surface portion (11b), and a retainer portion (11c). The upright surface portion (11b) extends from the base surface portion (11a) in a biasing direction so as to close a rear side of a root portion of a fixed blade (12) on an opposite side to a blade edge portion thereof, and is configured to prevent the fixed blade (12) from being disengaged in a direction of engagement with a movable blade. The retainer portion (11c) extends from the upright surface portion (11b) so as to cover the root portion of the fixed blade (12), and is configured to prevent the fixed blade (12) from being disengaged in the biasing direction.

Abstract: A fixed blade support device includes a biasing member and a fixed blade support member (11). The fixed blade support member (11) includes a base surface portion (11a), an upright surface portion (11b), and a retainer portion (11c). The upright surface portion (11b) extends from the base surface portion (11a) in a biasing direction so as to close a rear side of a root portion of a fixed blade (12) on an opposite side to a blade edge portion thereof, and is configured to prevent the fixed blade (12) from being disengaged in a direction of engagement with a movable blade. The retainer portion (11c) extends from the upright surface portion (11b) so as to cover the root portion of the fixed blade (12), and is configured to prevent the fixed blade (12) from being disengaged in the biasing direction.

Abstract: A fixed blade support device includes a biasing member and a fixed blade support member (11). The fixed blade support member (11) includes a base surface portion (11a), an upright surface portion (11b), and a retainer portion (11c). The upright surface portion (11b) extends from the base surface portion (11a) in a biasing direction so as to close a rear side of a root portion of a fixed blade (12) on an opposite side to a blade edge portion thereof, and is configured to prevent the fixed blade (12) from being disengaged in a direction of engagement with a movable blade. The retainer portion (11c) extends from the upright surface portion (11b) so as to cover the root portion of the fixed blade (12), and is configured to prevent the fixed blade (12) from being disengaged in the biasing direction.

Abstract: A movable blade used for a sheet cutting device to be mounted to a printer for performing printing on a sheet such as roll paper and a label sheet to automatically cut to a printed sheet. The movable blade is configured to cut the printed sheet by engaging with a fixed blade . The movable blade has a pair of guide portions (22c ) subject to ,after punching a processing of removing a corner portion of an outer edge portion on a punching rear side (Pr).

Abstract: Disclosed is a printer including a transverse tension sensor for detecting that a sheet being discharged has deviated in a paper width direction orthogonal to a discharging direction. The conveyance of the sheet is stopped based on a detection signal of the transverse tension sensor.

Abstract: A fixed blade support device includes biasing means and a fixed blade support member (11). The fixed blade support member (11) includes a base surface portion (11a), an upright surface portion (11b), and a retainer portion (11c). The upright surface portion (11b) extends from the base surface portion (11a) in a biasing direction so as to close a rear side of a root portion of a fixed blade (12) on an opposite side to a blade edge portion thereof, and is configured to prevent the fixed blade (12) from being disengaged in a direction of engagement with a movable blade. The retainer portion (11c) extends from the upright surface portion (11b) so as to cover the root portion of the fixed blade (12), and is configured to prevent the fixed blade (12) from being disengaged in the biasing direction.

Abstract: A pair of guide portions 22c is subjected to, after punching, a processing of removing a corner portion of an outer edge portion on a punching rear side Pr.

Abstract: Provided is a movable blade including, at a part including a movable blade leading edge which engages with a stationary blade, a blade edge portion which is thinned toward the movable blade leading edge. The blade edge portion is formed by shaving.

Abstract: Provided is a movable blade including, at a part including a movable blade leading edge which engages with a stationary blade, a blade edge portion which is thinned toward the movable blade leading edge. The blade edge portion is formed by shaving.

Abstract: Disclosed is a printer including a transverse tension sensor for detecting that a sheet being discharged has deviated in a paper width direction orthogonal to a discharging direction. The conveyance of the sheet is stopped based on a detection signal of the transverse tension sensor.