A printing apparatus includes: a print head; a conveyance device; and a control device configured to perform control of printing a print image, including: obtain image data indicating an input image; generate print data for printing the print image for each line based on the image data, the generating of the print data including: shifting the dots composing the input image in the sub-scanning direction to form the dots composing the print image; and reduce a width of a plain area in the sub-scanning direction of the print medium, the plain area being an area where the print image is not printed over the entire area of the plain area in the main scanning direction on the print medium.

In a method and device for ascertaining print data for a print image to be printed, the print data is adapted and/or determined such that the time curve of the ink flow quantity, exhibits no quantity changes or flow rates due to which ink ejection errors might be produced, in particular nozzle failures. The device includes: a communication interface configured to receive the print data; and processing circuitry that ascertains, based on the print data, a time curve of an ink flow quantity of ink that, during the printing of the print image, flows in the print bar and/or is ejected from the one or more nozzles of the print bar; and determine, based on the time curve of the ink flow quantity, whether an ink ejection error will be produced.

An image forming apparatus operable at a plurality of image forming speeds includes a pattern detection unit configured to detect a registration correction pattern at a first image forming speed, a writing start timing determination unit configured to determine writing start timing at which an electrostatic latent image is started to be written on a photosensitive member by a light beam emitted from a light source, and a storage unit configured to store in advance a correction amount for correcting the writing start timing. When the image forming apparatus operates at the first image forming speed set in advance, an image is formed at the writing start timing determined by the writing start timing determination unit. When the image forming apparatus operates at a second image forming speed, an image is formed at a writing start timing corrected based on the correction amount and a speed ratio.

A method includes: receiving, at a computing device, image data encoded by delta row encoding, the image data indicating two dimensionally arranged plurality of pixels, the image data including delta data indicating difference between N-th row line and (N−1)th row line in the two dimensionally arranged plurality of pixels; pre-decoding the image data for the N-th row line using the delta data if the delta data has a size equal to or larger than a threshold while keeping the image data for the N-th row line using the delta data if the delta data has a size smaller than the threshold so as to generate intermediate codes using the computing device; and decoding and rendering the kept undecoded lines in the generated intermediate codes while rendering the decoded lines in the generated intermediate codes using the computing device.

A method is disclosed. The method includes intersecting a clip polygon with a source image, determining destination coordinates of the clip polygon, rasterizing the clip polygon, determining a bounding box, dividing the bounding box into a plurality of logical destination tiles, processing the destination tiles to determine coordinates of source tiles corresponding to each of the destination tiles and performing rotation processing of the source tiles, wherein each tile is processed independently.

A drawing data generation apparatus includes a first intermediate data generation section that generates first intermediate data from formation image data in which a formation image is indicated as a cluster of drawing components, a second intermediate data generation section that generates, from the first intermediate data, second intermediate data indicating drawing content of each line-shaped region of the formation image, and a drawing data generation section that generates, from the second intermediate data, drawing data indicating drawing content of each line-shaped region in a row of pixel data. The second intermediate data generation section selects, based on the first intermediate data, either a first scheme of arranging an overlap of the drawing components and generating the second intermediate data from the cluster of drawing components or a second scheme of expressing and integrating the drawing components as a cluster of the pixels and generating the second intermediate data.

A method for checking a surface of an object, imprinted and/or structured in raster form, includes: a) using a digital image, which reproduces a replica of the surface, b) checking and/or determining a property of the surface or the replica using the digital image and/or the replica, and c) outputting a result with reference to the property. Step b) includes constructing and/or reconstructing a raster made from raster elements, using the digital image and/or the replica in which at least one raster element parameter can assume two or more, differently large size, brightness, and/or color parameter values, depending on the position of the corresponding raster element. The surface property is checked and/or determined as a function of the differently large parameter values and/or of the distribution of these differently large parameter values on the raster elements, and the result is output in Step c).

A positional-deviation correcting device includes a reading device and control circuitry. The reading device reads recording media on which marks and each of adjustment charts having different image densities are formed in accordance with the image densities. The control circuitry acquires data on image formation positions of the marks on the recording media, based on a reading result of the marks; and corrects an image formation position of an image to be formed on a recording medium. The control circuitry calculates a correction value of the image formation position corresponding to an image density for each of the image densities corresponding to the adjustment charts on a one-on-one relationship, based on a reading result of the adjustment charts; interpolates correction values corresponding to the image densities on a one-on-one relationship; and calculates a correction value of the image formation position corresponding to another image density different from the image densities.

In an example, a method includes rasterizing a seed image using a processor. A plurality of rasterized modified images may be generated from the rasterized seed image. Generating each rasterized modified image may include determining an image attribute modification and applying the determined image attribute modification to at least a portion of the rasterized seed image to generate the rasterized modified image.

In an example, a method includes rasterizing a seed image using a processor. A plurality of rasterized modified images may be generated from the rasterized seed image. Generating each rasterized modified image may include determining an image attribute modification and applying the determined image attribute modification to at least a portion of the rasterized seed image to generate the rasterized modified image.