Abstract: An image processing apparatus includes a reading unit and a correction information output unit. The reading unit acquires a saddle-stitched surface picture by reading a saddle-stitched surface of a saddle-stitched booklet formed through folding and stapling processes performed by a saddle-stitching device, and acquires a cover surface picture by reading a cover surface of the saddle-stitched booklet. The correction information output unit outputs correction information about a stapling position to the saddle-stitching device. The correction information is calculated on the basis of a difference between a cover-side fold line position on the cover surface picture, which is specified on the basis of a saddle stitch-side fold line position detected from the saddle-stitched surface picture, and a staple position detected from the cover surface picture.

Abstract: An apparatus includes: a unit that provides an instruction on creasing and folding positions on paper set such that the distance between fold crease and fold line positions is meaningful; a unit that acquires a read image by reading paper that has been subjected to creasing and folding processes in accordance with the creasing and folding positions in an open state; a unit that analyzes the read image to detect two streaks corresponding to the fold crease and the fold line from the read image, and that specifies the position of one of the two streaks as the fold crease position and the position of the other as the fold line position on the basis of the creasing and folding positions; and a unit that outputs correction information about at least one of the creasing and folding positions such that the fold crease and fold line positions match each other.

Abstract: An apparatus includes: a unit that provides an instruction on creasing and folding positions on paper set such that the distance between fold crease and fold line positions is meaningful; a unit that acquires a read image by reading paper that has been subjected to creasing and folding processes in accordance with the creasing and folding positions in an open state; a unit that analyzes the read image to detect two streaks corresponding to the fold crease and the fold line from the read image, and that specifies the position of one of the two streaks as the fold crease position and the position of the other as the fold line position on the basis of the creasing and folding positions; and a unit that outputs correction information about at least one of the creasing and folding positions such that the fold crease and fold line positions match each other.

Abstract: An image processing apparatus includes a reading unit and a correction information output unit. The reading unit acquires a saddle-stitched surface picture by reading a saddle-stitched surface of a saddle-stitched booklet formed through folding and stapling processes performed by a saddle-stitching device, and acquires a cover surface picture by reading a cover surface of the saddle-stitched booklet. The correction information output unit outputs correction information about a stapling position to the saddle-stitching device. The correction information is calculated on the basis of a difference between a cover-side fold line position on the cover surface picture, which is specified on the basis of a saddle stitch-side fold line position detected from the saddle-stitched surface picture, and a staple position detected from the cover surface picture.

Abstract: An image forming apparatus includes an output unit, a reading unit, and a processor. The output unit outputs multiple types of charts. The reading unit reads images of the charts. The charts are output by the output unit. The processor performs multiple types of processes in a predetermined order in accordance with the images of the charts and original images used to output the charts. Each of the processes is at least one of diagnosis and adjustment. The images of the charts are obtained through the reading operation performed by the reading unit. The charts which are output by the output unit include a diagnostic chart for a spot and/or a streak and a diagnostic chart for transfer. After the processor performs a first diagnosis based on the diagnostic chart for a spot and/or a streak, the processor performs a second diagnosis based on the diagnostic chart for transfer.

Abstract: An image forming apparatus includes an output unit, a reading unit, and a processor. The output unit outputs multiple types of charts. The reading unit reads images of the charts. The charts are output by the output unit. The processor performs multiple types of processes in a predetermined order in accordance with the images of the charts and original images used to output the charts. Each of the processes is at least one of diagnosis and adjustment. The images of the charts are obtained through the reading operation performed by the reading unit. The charts which are output by the output unit include a diagnostic chart for a spot and/or a streak and a diagnostic chart for transfer. After the processor performs a first diagnosis based on the diagnostic chart for a spot and/or a streak, the processor performs a second diagnosis based on the diagnostic chart for transfer.

Abstract: There is provided a document, wherein a measurement image for measuring a position of an image relative to a document is formed on a first surface thereof, a designation image for designating a document position, at which the document is placed on an image reading apparatus that reads an image, is formed on a second surface thereof, and wherein the document is spaced from an end portion of a reading region of the image reading apparatus by placing the document in accordance with the designation of the designation image, and the designation image is formed such that the measurement image is placed in the reading region of the image reading apparatus.

Abstract: There is provided a document, wherein a measurement image for measuring a position of an image relative to a document is formed on a first surface thereof, a designation image for designating a document position, at which the document is placed on an image reading apparatus that reads an image, is formed on a second surface thereof, and wherein the document is spaced from an end portion of a reading region of the image reading apparatus by placing the document in accordance with the designation of the designation image, and the designation image is formed such that the measurement image is placed in the reading region of the image reading apparatus.

Abstract: An image forming apparatus includes: a latent image forming unit forming a latent image; a transfer body on which a reference index for setting an output start time point of image data is formed; a detecting unit facing the reference index and outputting a detection signal changing in accordance with passing of the reference index; a measuring unit measuring change duration time; and a controller controlling the output start time point with the detection signal. The controller starts a first period during which change of the detection signal is ignored, according to first change of the detection signal, starts a second period after the first period, regards change of the detection signal occurring first in the second period as a reference of the output start time point if the change duration time is longer than a predetermined period, and ignores change of the detection signal after the change occurring first.

Abstract: An image forming apparatus includes: a latent image forming unit forming a latent image; a transfer body on which a reference index for setting an output start time point of image data is formed; a detecting unit outputting a detection signal changing according to passing of an adhesion material on the transfer body; a controller that starts a first period during which change of the detection signal is ignored, according to first change of the detection signal, starts a second period after the first period, regards second change of the detection signal occurring first in the second period as a reference of the output start time point, and ignores change of the detection signal after the second change, to control outputting the image data; and a cleaning information outputting unit outputting information on cleaning the transfer body according to the number of changes of the detection signal in these periods.

Abstract: The image forming apparatus includes: an image holder that is movably provided; a first image forming unit that forms a first image on the image holder; a second image forming unit that forms a second image on the image holder including the first image formed thereon; a transfer portion that transfers, onto a recording medium, the first image and the second image formed on the image holder; a supply unit that transports the recording medium and that supplies the recording medium to the transfer portion; an acquisition unit that acquires information on a position of displacement on the recording medium in a transport direction of the recording medium, the displacement occurring between the first image and the second image transferred onto the recording medium; and an adjustment unit that changes a supply speed of the recording medium at the supply unit on the basis of the information on the position.

Abstract: An image forming apparatus includes: a latent image forming unit forming a latent image; a transfer body on which a reference index for setting an output start time point of image data is formed; a detecting unit outputting a detection signal changing according to passing of an adhesion material on the transfer body; a controller that starts a first period during which change of the detection signal is ignored, according to first change of the detection signal, starts a second period after the first period, regards second change of the detection signal occurring first in the second period as a reference of the output start time point, and ignores change of the detection signal after the second change, to control outputting the image data; and a cleaning information outputting unit outputting information on cleaning the transfer body according to the number of changes of the detection signal in these periods.

Abstract: An image forming apparatus includes: a latent image forming unit forming a latent image; a transfer body on which a reference index for setting an output start time point of image data is formed; a detecting unit facing the reference index and outputting a detection signal changing in accordance with passing of the reference index; a measuring unit measuring change duration time; and a controller controlling the output start time point with the detection signal. The controller starts a first period during which change of the detection signal is ignored, according to first change of the detection signal, starts a second period after the first period, regards change of the detection signal occurring first in the second period as a reference of the output start time point if the change duration time is longer than a predetermined period, and ignores change of the detection signal after the change occurring first.

Abstract: An image forming apparatus includes: a latent image forming unit scanning and exposing an image carrier according to image data, to form a latent image; a transfer body on which a toner image is transferred and a reference index for setting an output start time point of the image data is formed; a detecting unit facing the reference index and outputting a detection signal changing in accordance with passing of the reference index; and a controller controlling the output start time point with the detection signal. The controller starts a first period during which change of the detection signal is ignored, according to first change of the detection signal, starts a second period after the first period, regards second change of the detection signal occurring first in the second period as a reference of the output start time point, and ignores change of the detection signal after the second change.

Abstract: The image forming apparatus includes: an image holder that is movably provided; a first image forming unit that forms a first image on the image holder; a second image forming unit that forms a second image on the image holder including the first image formed thereon; a transfer portion that transfers, onto a recording medium, the first image and the second image formed on the image holder; a supply unit that transports the recording medium and that supplies the recording medium to the transfer portion; an acquisition unit that acquires information on a position of displacement on the recording medium in a transport direction of the recording medium, the displacement occurring between the first image and the second image transferred onto the recording medium; and an adjustment unit that changes a supply speed of the recording medium at the supply unit on the basis of the information on the position.