In an image forming apparatus, a scanning optical system forms on a photosensitive member N beam spots. Each beam spot scans along a scan line on the photosensitive member for one cycle. A center-to-center distance of any neighboring two beam spots is separated by M scan lines. M is a natural number larger than or equal to two. For each cycle, the memory controller reads adjacent sets of line data for N scan lines from the page memory, writes the adjacent sets of line data for N scan lines to the storage areas identified by a plurality of successive addresses of the line memory, selects addresses identifying storage areas storing unadjacent sets of line data having non-successive two scan lines separated by M scan lines; and outputs the unadjacent sets of line data stored in the storage areas identified by the selected addresses to the N laser emitting members.

A receipt printing apparatus comprises a printer including a processor and a printing unit that is capable of printing on a printing medium. A registration device is connected to the printer. The printer stores a control program that when implemented by the processor causes the printer to acquire transaction details from the registration device, to receive a selection of a first output receipt type and a second output receipt type, and to output the transaction details in the selected one of the first output receipt type and the second output receipt type.

To make it possible to suppress a delay of the start of rendering of a page even in the case where image data is included across the band boundary in the page of print data. The image processing apparatus of the present invention is an image processing apparatus that performs rendering by dividing a page into a first area and a second area based on print data and includes: a memory configured to store image data arranged across the first area and the second area; a first render configured to access the image data and to perform rendering by using pixels within the first area of all pixels of the image data; and a second render configured to access the image data and to perform rendering by using pixels within the second area of all pixels of the image data.

A printing control apparatus includes a control unit. Provided that n is an integer equal to or greater than one, the control unit configured to perform printing control processing including a plurality of types of processing configured to be performed simultaneously is configured to, in the printing control processing performed for an n-th time, write, to a first storage medium of the storage unit, n-th print data that is the print data generated in the printing control processing performed for an n-th time, and, in the printing control processing performed for an n+1-th time, write, to a second storage medium of the storage unit, n+1-th print data that is the print data generated in the printing control processing performed for an n+1-th time, and also read the n-th print data from the first storage medium and supply the n-th print data to the printing unit.

A printing control apparatus includes a control unit. Provided that n is an integer equal to or greater than one, the control unit configured to perform printing control processing including a plurality of types of processing configured to be performed simultaneously is configured to, in the printing control processing performed for an n-th time, write, to a first storage medium of the storage unit, n-th print data that is the print data generated in the printing control processing performed for an n-th time, and, in the printing control processing performed for an n+1-th time, write, to a second storage medium of the storage unit, n+1-th print data that is the print data generated in the printing control processing performed for an n+1-th time, and also read the n-th print data from the first storage medium and supply the n-th print data to the printing unit.

In an image forming apparatus, a scanning optical system forms on a photosensitive member N beam spots. Each beam spot scans along a scan line on the photosensitive member for one cycle. A center-to-center distance of any neighboring two beam spots is separated by M scan lines. M is a natural number larger than or equal to two. For each cycle, the memory controller reads adjacent sets of line data for N scan lines from the page memory, writes the adjacent sets of line data for N scan lines to the storage areas identified by a plurality of successive addresses of the line memory, selects addresses identifying storage areas storing unadjacent sets of line data having non-successive two scan lines separated by M scan lines; and outputs the unadjacent sets of line data stored in the storage areas identified by the selected addresses to the N laser emitting members.

Image data stored in a spool memory and respectively corresponding to a plurality of colors is read and sequentially decompressed, and image forming processing is performed based on the decompressed image data. In the decompression, the image data respectively corresponding to the plurality of colors is sequentially decompressed, switching between decompression target data in units of bands.

An image processing apparatus uses a first rendering processor that performs rendering of a first area within a page based on print data and a second rendering processor that performs rendering of a second area within the page based on the print data. The image processing apparatus includes a controller, having a processor which executes instructions stored in a memory or having circuitry, being configured to acquire image data arranged across the first area and the second area based on the print data, cause the first rendering processor having accessed the image data to acquire all pixels of the image data and to perform rendering with pixels within the first area of all the pixels of the image data, and cause the second rendering processor having accessed the image data to acquire all the pixels of the image data and to perform rendering with pixels within the second area of all the pixels of the image data.

A printing device printing on a non-transitory recording medium with a print head, comprising the following: an input receiver receiving input of a character string including multiple characters; a print data transmitter sending to the print head individually inverted characters of one or more characters included in the character string of which the input is received; and a printer printing with the print head the inverted characters received by the print head such that the inverted characters are arranged closer to a leading end in a transfer direction of the recording medium.

Image data stored in a spool memory and respectively corresponding to a plurality of colors is read and sequentially decompressed, and image forming processing is performed based on the decompressed image data. In the decompression, the image data respectively corresponding to the plurality of colors is sequentially decompressed, switching between decompression target data in units of bands.