Abstract: An edge detection apparatus for detecting an edge of a recording medium to be conveyed includes a light source, a plurality of photoelectric conversion element pixels, and a detection unit. The light source irradiates the recording medium with light. The plurality of photoelectric conversion element pixels are placed in a direction orthogonal to a conveyance direction of the recording medium and convert light reflected by the recording medium into an electrical signal. The detection unit detects the edge of the recording medium on the basis of a plurality of electrical signals that constitute an n-th (n?1) electrical signal group obtained by dividing the plurality of electrical signals corresponding one-to-one to the plurality of photoelectric conversion element pixels, and a specified number of the electrical signals counted from a top of the plurality of electrical signals that constitute an n+1st electrical signal group.

Abstract: An edge detection apparatus for detecting an edge of a recording medium to be conveyed includes a light source, a plurality of photoelectric conversion element pixels, and a detection unit. The light source irradiates the recording medium with light. The plurality of photoelectric conversion element pixels are placed in a direction orthogonal to a conveyance direction of the recording medium and convert light reflected by the recording medium into an electrical signal. The detection unit detects the edge of the recording medium on the basis of a plurality of electrical signals that constitute an n-th (n?1) electrical signal group obtained by dividing the plurality of electrical signals corresponding one-to-one to the plurality of photoelectric conversion element pixels, and a specified number of the electrical signals counted from a top of the plurality of electrical signals that constitute an n+1st electrical signal group.

Abstract: An image forming system includes an image forming unit configured to output image data onto a recording medium; a first conveying unit configured to convey the medium; a reading unit configured to read an image from the medium; a defect determining unit configured to determine whether the read image has a defect; a device connection determining unit configured to determine whether a discharge device is directly connected to an image inspection device at the downstream side or is connected to the image inspection device via another device at the downstream side; a second conveying unit configured to convey the medium to the discharge device on a longer conveying path, when the discharge device is directly connected to the image inspection device; a defective discharge tray to which the medium having a defective image is discharged; and a normal discharge tray to which the medium having a non-defective image is discharged.

Abstract: A printing system includes a print-data generating device and a printing device. The print-data generating device is connected to the printing device via a first transmission path and a second transmission path of which transfer speed is faster than that of the first transmission path. A communication unit of the print-data generating unit and a communication unit of the printing device transmit to and receive from each other the image data and specific control information that affects the transfer of the image data via the second transmission path, and control information other than the specific control information via the first transmission path.

Abstract: A device includes: a receiver receiving a displacement of an image formation target area in a sub-scanning direction from a reference position on a continuous form with side portions having holes and with a page boundary per a length; a calculator calculating marker lengths of markers marking upper and lower ends of a page of the continuous form based on the displacement, a shortest distance to the holes from the page boundary, and a reference length for when the displacement is not specified for the markers; another calculator calculating start positions of the markers based on the displacement, the distance, the reference length, and a length of the target area in the sub-scanning direction; and a controller performing, with respect to an apparatus, control of the image formation of the markers in the side portions from the start positions over the marker lengths.

Abstract: An image forming system includes an image forming unit configured to output image data onto a recording medium; a first conveying unit configured to convey the medium; a reading unit configured to read an image from the medium; a defect determining unit configured to determine whether the read image has a defect; a device connection determining unit configured to determine whether a discharge device is directly connected to an image inspection device at the downstream side or is connected to the image inspection device via another device at the downstream side; a second conveying unit configured to convey the medium to the discharge device on a longer conveying path, when the discharge device is directly connected to the image inspection device; a defective discharge tray to which the medium having a defective image is discharged; and a normal discharge tray to which the medium having a non-defective image is discharged.

Abstract: A printing system includes a print-data generating device and a printing device. The print-data generating device is connected to the printing device via a first transmission path and a second transmission path of which transfer speed is faster than that of the first transmission path. A communication unit of the print-data generating unit and a communication unit of the printing device transmit to and receive from each other the image data and specific control information that affects the transfer of the image data via the second transmission path, and control information other than the specific control information via the first transmission path.

Abstract: A device includes: a receiver receiving a displacement of an image formation target area in a sub-scanning direction from a reference position on a continuous form with side portions having holes and with a page boundary per a length; a calculator calculating marker lengths of markers marking upper and lower ends of a page of the continuous form based on the displacement, a shortest distance to the holes from the page boundary, and a reference length for when the displacement is not specified for the markers; another calculator calculating start positions of the markers based on the displacement, the distance, the reference length, and a length of the target area in the sub-scanning direction; and a controller performing, with respect to an apparatus, control of the image formation of the markers in the side portions from the start positions over the marker lengths.

Abstract: In a sewing machine equipped with an apparatus to terminate stitching at a predetermined point, the machine normally does not terminate stitching exactly at the desired predetermined point because the elastic nature of the workpiece causes the workpiece to stretch. A last stitch is added beyond the point where stitching terminates by the "step sewing" apparatus of this invention. To perform step sewing, an operator inputs a stitch pitch for step sewing with a digital switch, then pushes a step sewing button. Based on the selected stitch pitch, a CPU reads selected stitch pitch data. The data is used by the CPU to control a stitch pitch setting mechanism. A stitching device then performs a single stitch at the selected stitch pitch. By selecting the proper stitch pitch, the last stitch can terminate at the desired termination point.

Abstract: A sewing machine automatically sews a seam which ends at a desired point. The last n stitches, preferably the last two stitches, are of substantially equal length. A counter counts pulses while the work is being fed to the needle. The machine detects when the trailing edge of the work passes by a predetermined location ahead of the needle. Upon such detection, the contents of the counter are used to calculate the proper stitch pitch for the last two stitches. The stitch pitch is varied as necessary during sewing of the last two stitches in the seam.

Abstract: A sewing machine capable of multiple functions including terminating stitches at a predetermined point, carrying out predetermined stitch patterns, automatic stitch pitch adjustment, stopping at preset points and thread cutting without operator intervention. These operations are controlled by means of a computer interface with the sewing machine and can carry out labeling, pocket attachment, collar attachment, cuffs etc. at preset intervals.