Disclosed are a projection device and a spatial imaging method. The projection device includes: an optical fiber scanner array; a light source located on an incident light path of the optical fiber scanner array; and an adjustment and control module assembly configured to couple, according to a virtual scene to be displayed, light emitted by the light source into the optical fiber scanner array, and to control the optical fiber scanner array to project pencil beams to a plurality of virtual object points corresponding to the virtual scene and located in space, such that multiple pencil beams projected to each virtual object point form a bundle of emitting light beams.

Disclosed are a projection device and a spatial imaging method. The projection device includes: an optical fiber scanner array; a light source located on an incident light path of the optical fiber scanner array; and an adjustment and control module assembly configured to couple, according to a virtual scene to be displayed, light emitted by the light source into the optical fiber scanner array, and to control the optical fiber scanner array to project pencil beams to a plurality of virtual object points corresponding to the virtual scene and located in space, such that multiple pencil beams projected to each virtual object point form a bundle of emitting light beams.

Provided is an image forming apparatus that suppresses degradation of performance of processing up to completion of printing while suppressing the occurrence of moire. A data-compression unit stores identification data indicating the presence or absence of periodicity obtained by analyzing printing data, and printing data correlated with the identification data in a first memory area of a RAM. A color-conversion-processing unit that performs a speculative process, causes printing data that has undergone a color conversion process corresponding to printer printing to be stored in a second memory area of a RAM. A screen-processing unit that performs a speculative process, performs an AM screen process on printing data. In addition, a system-control unit causes the image-forming unit to move from a printing pre-start position to a printing start position based on a determination result of a printing color in a color conversion process corresponding to a first printer printing by the color-conversion-processing unit by a speculative process.

There is provided a document reading apparatus which automatically transports a document placed on a document tray to read an image. In a case of reading the document placed on the document tray, a document tray moving unit moves the document tray and a pickup roller presses the document based on a first instruction by a first operation button so that a state in which the document is placed is shifted to a document feeding available state, and a reading process of the document is started based on a second instruction by a second operation button.

Provided is an image forming apparatus that suppresses degradation of performance of processing up to completion of printing while suppressing the occurrence of moire. A data-compression unit stores identification data indicating the presence or absence of periodicity obtained by analyzing printing data, and printing data correlated with the identification data in a first memory area of a RAM. A color-conversion-processing unit that performs a speculative process, causes printing data that has undergone a color conversion process corresponding to printer printing to be stored in a second memory area of a RAM. A screen-processing unit that performs a speculative process, performs an AM screen process on printing data. In addition, a system-control unit causes the image-forming unit to move from a printing pre-start position to a printing start position based on a determination result of a printing color in a color conversion process corresponding to a first printer printing by the color-conversion-processing unit by a speculative process.