Seiko Epson Corporation

Hiroaki Momose

Koichi Otsuki

Hidetake Nishizawa

Kazunobu Nimura

Tatsuya Kitazawa

An ink jet printer with a double-side printing function enables to print page images at a proper position on both surfaces of a cut paper, is provided. When feeding the cut paper A having an image printed on the front surface, the feeding rolleris rotated in the direction Cto feed the cut paper A and simultaneously the registering rollersare rotated in the direction Dto push back the cut paper. In addition, the double-side printing is easily realized in both of the cases where the ink jet printer with the double-side printing function is connected to the host, and where the ink jet printer without double-side printing function is connected to the host by having the host make an inquiry of the printer whether or not double-side printing is available (step). Based on the results of the inquiry, printing commands are generated and sent to the printer.

Ink jet printer, printer control unit, printer system including the same, and storage medium with the operation program of the printer control unit stored for controlling double-side printing

An image processing apparatus has a mode selecting unit for selecting one of plural image selection modes having different objects. There is also an image selecting unit for selecting a set of composite image reproduction data and items of component image data from a group of the sets of the composite image reproduction data formed of items of the component image data or from a group of the items of the component image data. The selection is performed in accordance with the image selection mode selected by the mode selecting unit. The group of the sets of the composite image reproduction data, and the group of the items of the component image data, are objects for selection. A processing unit executes a process for the set of the composite image reproduction data or the item of the component image data selected by the image selecting unit.

Image processing apparatus, image processing method, and image processing program product

On a setup computer-readable medium, there are recorded a USB port driver file, an INF file including information about a folder in which the USB port driver file is recorded, a printer driver file, and a setup program. After having installed a printer driver on the assumption that a printer is connected to a parallel port (step S ), the setup program copies the INF file to a folder &yen;WINDOWS&yen;INF and a USB port driver file to a folder specified by designation information stored in the INF file (step S ). The setup program performs a connection monitoring operation (step S ) for switching a connection port to which the printer is to be connected when a printer is detected to have been connected to the USB port.

Computer readable medium for setup and setup method

A printing control apparatus that facilitates settings, such as magnification-reduction and a layout of plural pages on one printing plane, and thereby improves the operatability. The operator sets in advance print attribute information, such as an orientation, a printable area, and magnification-reduction, mapped to plural pieces of logic sheet information with a data input device,. The plural pieces of logic sheet information with the print attribute information mapped thereto are accordingly registered in a pull-down menu,. The operator selects one piece of logic sheet information out of the pull-down menu,, so as to set the print attribute information corresponding to the selected piece of logic sheet information. In the printing control apparatus, bit map data based on print data are edited according to these various pieces of information.

Printing control apparatus, printing control method, and computer program product for realizing the method

The technique of extending a printable area, in which an image can be recorded, by carrying out a sub-scan with rollers in a delivering section of a printer having a lower accuracy of sheet feeding often causes dropout of raster lines and thereby deteriorates the picture quality of a resulting printed image. In an ink jet printer of the present invention, the interlace method is applied to record an image in a first area where rollers in a feeding section ensure the accuracy of sheet feeding, in order to attain the high picture quality. The printable area Is extended to a second area, where the rollers in the delivering section are used to carry out the sheet feeding of the lower accuracy after the lower end of a printing medium comes off the rollers in the feeding section. In the present invention, recording of dots is carried out by the interlace method with a reduced number of working nozzles in the second area. This decreases each amount of sub-scan and thereby reduces an error in sheet feeding. The method of enabling each raster line to be formed with different nozzles or the method of creating large dots having a greater diameter may also be applied to form raster lines in the second area. Single or combined application of these techniques significantly improves the picture quality in the second area.

Printer, method of printing, and computer program product to actualize

The present invention relates to a paper-feed control apparatus for a printer that reduces the frequency of paper-feed failures by automatically performing a clearing operation if a malfunction should occur in the supply of paper. Paper stacked in a paper tray 1 is separated one sheet at a time by separator tabs 5, and then is sent in a conveyor direction by the rotation of a feed roller 3. If the paper should jam partway during this separation and conveyor process, a paper-feed motor that drives the feed roller 3 is driven intermittently. This intermittent operation produces a large paper conveyor force from repeated generation of a large frictional force between the roller and the paper, and thus the frequency of paper-feed failures is reduced.

Paper-feed control apparatus for printer

In a method and an apparatus of controlling the movement of a printing head in a printer for printing characters along a print pass while selectively reversing the moving direction of the printing head, in which the character heights of a plurality of character series are checked, image data of a plurality of lines are read out, the image data being contained in a pass which can be printed within the height of the printing head, are printed at once. It is then checked whether or not the printed image data is continuous to the image data of the next pass, the same moving direction of the printing head is kept for printing the image of the next pass if it is continuous, and the moving direction of the printing head is reversed for printing the image of the next pass if it is not continuous. The method and the apparatus can print characters in excess of the height of the printing head with a high quality.

Method and apparatus for controlling the movement of a printing head in

A printer that includes a means for storing print data of a character; a first converter for converting print data to be read into a single dot pattern by performing the function of logical OR of a total of four dot patterns, assuming that a print head moving direction is a horizontal direction. The four dot patterns are: the print data, data next to such print data, data four pieces of data ahead, and data five pieces of data ahead. The printer also includes an inverter for inverting the single dot pattern generated by the first converter; a second converter for converting two dot patterns into a single dot pattern by performing the function of logical AND of two dot patterns. These two dot patterns are: a dot pattern newly generated by the first converter and the dot pattern inverted by the inverter, so that the number of horizontally extending data of a bold character is changed and compressed to thereby create a reduced bold character and print such reduced bold character.

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Nagano, Japan

Hiroaki Momose