Drawing setting and inspection setting can be facilitated and the inspection can be easily stabilized, and thereby user convenience is enhanced. An ink jet printing apparatus includes: a drawing setting section that sets a drawing content to be drawn on an object to be drawn; a drawing data generation section that generates drawing data corresponding to the drawing content; an image inspection section that determines quality of a drawing state related to information drawn on the object; a storage section that stores information regarding inspection performance of the image inspection section; a determination section that determines whether an inspection by the image inspection section is stable based on the information regarding the inspection performance of the image inspection section stored in the storage section and the drawing content set by the drawing setting section; and a notification section that notifies a user of a determination result of the determination section.

An information processing apparatus includes a processor configured to execute a process of detecting an object that includes readable information regarding spot color designation in document data, excluding the detected object from a drawing target at a time of outputting the document data, and reflecting spot color drawing designated by the readable information on the drawing target.

A substrate includes a mark that is an enhanced moir pattern. In some embodiments, the mark includes multiple sets of parallel bars printed at various angles and in certain color combinations. Each of the bars includes multiple lines printed at various colors. The overall mark will cause the substrate to exhibit an enhanced moir effect.

A print image adjustment method includes a printable range setting step of setting a printable range, an image preparation step of preparing an image, a display step of displaying a position of the printable range and the image, and a print image processing step of processing the image to generate a print image, wherein the print image processing step includes processing the image to fit the print image within the printable range.

A light scanning apparatus satisfies the following conditions: 0.60(dY.sub.max/d)/(dY.sub.0/d)0.98; and 0.50<Sk/ft<1.00, where, when a deflecting unit rotates at a constant angular velocity, represents a scanning angle between a principal ray of a light flux immediately after deflected by the deflecting unit and an optical axis of an imaging optical system, Y.sub.0 represents an on-axis image height, Y.sub.max represents a first outermost off-axis image height on a side opposite to a light source with respect to the optical axis of the imaging optical system in a main scanning cross section, ft represents a focal distance of the imaging optical system in the main scanning cross section, and Sk represents a distance between a rear-side principal plane of the imaging optical system and a scanned surface on an optical path of a principal ray of the light flux that travels to the on-axis image height.

A print job includes a color image, a height image with height information per pixel of the color image and a gloss image with gloss information per pixel of the color image. A print head assembly subsequently prints elevation layers, anti-contouring layers, white layers, at least one color ink layer and at least one overcoat layer on the print media. A print controller creates multiple inverse anti-contouring layers. Each pixel value of the multiple inverse anti-contouring layers is a complementary value of the corresponding pixel in the anti-contouring layers with respect to a maximum of ink pixels determined to be printed on top of each other in the anti-contouring layers. The print head assembly prints the multiple inverse anti-contouring layers between the at least one color ink layer and the at least one overcoat layer.