Abstract: An image processing apparatus includes: a storage unit that stores image information on which additional information is to be overlaid; a change unit that changes pixels, within a predetermined range of respective pixels constituting the image information, among pixels constituting the additional information, to pixels having a different density or color tint from a density or color tint of the image information and the additional information; and an overlay unit that overlays the additional information changed by the change unit on the image information held in the storage unit.

Abstract: A printing device includes a printer having a first printing part, a second printing part, and a reading sensor. The printer continuously prints printing data onto a printing medium. The first printing part in the printer first prints the printing data onto the printing medium by forming a mark indicating a page of the printing medium. The reading sensor subsequently reads the mark and matches printing surfaces of the printing medium to be printed by the first and second printing parts. The second printing part in the printer thereafter prints the printing data onto the printing medium. The printing device further includes an information holding part that previously holds information on a relationship between a size of the printing medium and a position of the mark, and a mark position setting part that movably sets the mark position based on the information held in the information holding part in accordance with the size of the printing medium.

Abstract: An image processing apparatus includes: a storage unit that stores image information on which additional information is to be overlaid; a change unit that changes pixels, within a predetermined range of respective pixels constituting the image information, among pixels constituting the additional information, to pixels having a different density or color tint from a density or color tint of the image information and the additional information; and an overlay unit that overlays the additional information changed by the change unit on the image information held in the storage unit.

Abstract: An image forming apparatus includes: conveyance part that conveys, along a conveyance path, continuous paper in which fold lines are disposed per constant size; a detector that is disposed in a detection position in the middle of the conveyance path and detects whether or not a fold line in the continuous paper at the detection position is a mountain fold or a valley fold; and a memory that stores predetermined numbers of conveyance steps per size of one sheet of the continuous paper, wherein a leading edge of the continuous paper is loaded to a preset reference position, the number of conveyance steps corresponding to the size of one sheet of the continuous paper is read from the memory, the continuous paper is conveyed by the number of conveyance steps, and the fold line is aligned with the detection position of the detector.

Abstract: A printing device includes a first printer and a second printer which continuously print one or plural pieces of printing data onto a printing medium. In the printing device, the second printer includes a reading sensor, the first printer first prints the one or plural pieces of printing data onto the printing medium by forming a mark indicating a page of the printing medium or each of the plural pieces of the printing data, the reading sensor in the second printer subsequently reads the mark and matches printing surfaces of the printing medium to be printed by the first and second printers, and the second printer thereafter prints the printing data onto the printing medium.

Abstract: A printing device includes a first printer and a second printer which continuously print one or plural pieces of printing data onto a printing medium. In the printing device, the second printer includes a reading sensor, the first printer first prints the one or plural pieces of printing data onto the printing medium by forming a mark indicating a page of the printing medium or each of the plural pieces of the printing data, the reading sensor in the second printer subsequently reads the mark and matches printing surfaces of the printing medium to be printed by the first and second printers, and the second printer thereafter prints the printing data onto the printing medium.

Abstract: A printing device includes a first printer and a second printer which continuously print one or plural pieces of printing data onto a printing medium. In the printing device, the second printer includes a reading sensor, the first printer first prints the one or plural pieces of printing data onto the printing medium by forming a mark indicating a page of the printing medium or each of the plural pieces of the printing data, the reading sensor in the second printer subsequently reads the mark and matches printing surfaces of the printing medium to be printed by the first and second printers, and the second printer thereafter prints the printing data onto the printing medium.

Abstract: The present invention aims at providing a method of controlling a post-processor connected with an image-forming device that utilizes a conventional image-forming device and post-processing unit, and does not necessarily require to consistently form a sag in continuous paper. The inventive method of controlling the post-processor is carried out by the image-forming device that includes a transfer part and a fixing part, and conveys continuous paper. The image-forming device is connected with the post-processor that processed the continuous paper on which an image has been formed.