90results about How to "Avoid print quality" patented technology

Provided is a method for printing a captured screen of a web page. If the total size of a web page displayed on a web browser screen is greater than the monitor resolution of a web user, the method automatically scrolls the web browser screen in the horizontal / vertical direction to capture the total region of the web page into a plurality of segments and combines the captured web page screen segments to print or store the same as one web page screen. The method can overcome a problem that the quality of a printed material degrades when a captured screen of a web page displayed on a web browser screen is converted in a bitmap format prior to printing, a problem that a web page viewed by a web user through a web browser screen is not identically printed due to the restricted maximum size of a bitmap if the web page is long, and a problem that the web page contents exceeding the monitor screen of a web user are not printed if the total size of a web page is greater than the monitor resolution of the web user when a captured screen is converted into an Enhanced Meta File (EMF) prior to printing in order to improve the quality of a printed material.

A laminate composite sheet comprising a two-ply base layer comprised of a bottom ply and a top ply, wherein the bottom ply is comprised of unbleached cellulosic fibers and wherein the top ply is comprised of bleached or brightened cellulosic fibers and a further layer attached to the top ply with a layer of adhesive; said further layer having a top and a bottom surface, said further layer selected from the group consisting of paper or film; said layer of adhesive containing no pigment, and said top surface of said further layer having no coating.

A container treatment machine for printing on containers, including a transport unit optionally configured as a carousel and used for conveying the containers in circulating container reception apparatus, at least one direct printing head for printing with a light-curing printing ink, and a stationary curing unit for curing the printing ink on the containers by light radiation, optionally UV light radiation, characterized in that each of the container reception apparatuses is provided with a shielding enclosure used for shielding off light radiation and having at least one access opening for the curing unit, and the curing unit is provided with a shielding element cooperating with the access opening of at least one shielding enclosure such that direct exit of light is prevented.

A system and method that controls the amount of energy accumulated at the collection location of a printing device to prevent image transfer or offsetting between sheets of stacked media, in particular, media of high thermal capacitance. This may be accomplished by regulating one or more of a combination of factors, including media process speed and sheet interval or pause time, while providing adequate fusing of the toner and an efficient printing operation.

A printing press cylinder and a method of manufacturing the same. The printing press cylinder includes a rigid base member having a reduced radius section and a polymer layer formed about the rigid base member generally within the reduced radius section. The polymer layer is operable to absorb forces and dissipate energy that degrades print quality. A gear portion is operably coupled to the rigid base member for rotation therewith. The printing press cylinder is manufactured by turning a rigid base member to produce a reduced radius section and subsequently molding a polymer layer generally within the reduced radius section of the rigid base member. The polymer layer is cured and then turned to reduce the circumference thereof and produce a smooth surface.

A fixing mechanism of an optical scanning device, the optical scanning device emitting a light beam and performing a scanning, the optical scanning device further being fixed to a frame at an external part, the optical scanning device further including a housing, and the fixing mechanism including: a penetration hole provided in the frame; and a protruding pin provided at both ends of the housing thereby forming a plurality of protruding pins, wherein at least one of the plurality of protruding pins is insertable to the penetration hole formed in the frame; and a biasing member biasing the housing in a direction.

In a sheet reversing unit, an attraction belt is supported, in a 180° twisted position, between a belt driving roller at a conveying start position and a belt driving roller at a conveying end position, and a sheet is conveyed by providing the attraction belt with an electrostatic force from an AC power supply and thus by being attracted to the attraction belt, whereby the sheet is reversed.

A screen printing apparatus. Cream solder stored in a squeegee head is pressurized by a pressurizing plate, and the squeegee head is slid on a mask plate, so that the cream solder is printed onto a substrate via pattern apertures. This is done by a screen printing apparatus, in which pressurized solder is accommodated, and the solder is brought into contact with a surface of the mask plate via an opening formed on a lower face of the cell. A rectifier is disposed in the cell for blocking the cream solder from flowing into a specific area just above the opening. This structure allows the solder to flow into the opening in a slant direction, and causes the solder to roll. This mechanism prevents the solder from being hardened due to staying stagnant just above the opening, and thus prevents defective printings.

A voltage supply device for developing devices of a color image forming apparatus has a printed circuit board (PCB) connected with a high voltage supply source, a plurality of fixed contact point terminals provided at one end of the respective color developing devices, and a plurality of voltage changeover units for selectively connecting the PCB and the fixed contact point terminals to selectively supply the voltage from the high voltage supply source to the respective color developing devices. With the voltage supply device, contact point changeover is enabled without having to move the developing device, by using a relay part of a relatively simple structure during the change of developing device. Accordingly, deterioration of printing quality due to shock from the contact with the developing device is avoided, and the reliability of high voltage contact point changeover is improved. Further, the number of high voltage wiring harness, which is required for supplying voltage from the high voltage supply source to the developing devices, can be reduced.

A print head driving circuit is provided whereby, even if the load changes, the accuracy of the driving voltage waveform supplied to the load can be maintained, and consequently, deterioration in printing quality can be prevented. Transistors Q3, Q4 connected in a push-pull configuration are connected to the upstream of a transistor Q1. If the base potential of the transistor Q1 rises above its normal level, then the emitter potential of the transistors Q3, Q4 will rise and the transistor Q3 will become non-conductive, and the transistor Q1 will also become non-conductive, but since the transistor Q4 is conductive, the current I2 will flow from the base terminal of the transistor Q1, to earth, via the transistor Q4, and hence the base potential of the transistor Q1 will fall to or below the prescribed value. As a result, it is possible to prevent the base potential of the transistor Q1 from rising up in excess of the prescribed value.

The present invention provides an ink jet recording ink which has excellent stability, high coloration on regular paper, high glossiness on gloss paper and excellent discharge stability of an ink from an ink jet head. This ink jet recording ink uses 2-methyl-2-propyl-1,3-propanediol. The added amount of 2-methyl-2-propyl-1,3-propanediol is no less than 0.1% by weight and no more than 2.0% by weight.

Provided are a printing head, a printing method, a printing system, a storage medium and a printer. The printing head comprises a shell, a constant temperature device and a board card, wherein the constant temperature device is in contact with the board card; the constant temperature device comprises a heat exchange block, a liquid inlet pipe, a liquid outlet pipe, a first circulating pump and a first radiator; one end of the heat exchange block communicates with the liquid inlet pipe, and the other end, opposite to the former end, of the heat exchange block communicates with the liquid outletpipe; one end of the first radiator communicates with the liquid inlet pipe, and the other end, opposite to the former end, of the first radiator communicates with the liquid outlet pipe; the first circulating pump is arranged on the liquid inlet pipe or the liquid outlet pipe; the first radiator, the liquid inlet pipe, the heat exchange block, the liquid outlet pipe and the first circulating pump communicate to form a cooling passage; and the shell encloses a space, the heat exchange block and the board card are both arranged inside the shell, and the first radiator is arranged outside the shell. The working temperature of the board card is guaranteed, and the service life of a precision component is prolonged.

A screen printing apparatus that prevents degradation of a printing tact and print quality is provided. There are included a cleaning unit 14 that cleans one surface 11c of a screen mask 11 opposing a workpiece 2, the screen mask 11 having a print pattern for printing a pattern on the workpiece 2, and a conveying means 15 that conveys the cleaning unit 14 over the surface 11c of the screen mask 11. The cleaning unit 14 includes cleaning paper 21 that contacts the surface 11c of the screen mask 11, a scraper 22 that brings the cleaning paper 21 into contact with the surface 11c of the screen mask 11, that slides on the surface 11c of the screen mask 11 with the cleaning paper 21 being disposed therebetween, and that has an uneven face portion 22b, and a scraper moving means 23 that moves the scraper 22 to the contact position.

The invention provides a processing box comprising a casing, wherein the casing is provided with a carbon powder cabin for accommodating carbon powder; a photosensitive drum, a charging roller for supplying power to the photosensitive drum, a developing roller for delivering the carbon powder to the photosensitive drum, a powder delivery roller for delivering the carbon powder to the developing roller, and a doctor blade for adjusting the thickness of carbon powder layers on the developing roller, wherein one end of the charging roller is connected with a conducting member, and the conducting member and the powder delivery roller are connected by a voltage reducer. An applicable voltage reducer can be selected according to the characteristics of the carbon powder loaded in the processing box and the powder delivery roller, polarity carbon powder with positive electricity is effectively neutralized and eliminated, and the powder delivery roller is ensured to form enough electric field force so that words and figures formed on paper are black enough and the print quality is improved.

The present invention relates to a high-speed page wide multiple-pass printing method, comprising the steps of: (a) providing a printing device and a medium, wherein the printing device comprises a control unit, a printing module and a storing module; (b) the control unit receiving and grouping the data into an odd-number group and an even-number group, then storing the grouped data in the storing module and transmitting a printing order; (c) the printing module receiving the printing order, extracting the data grouped into the odd-number group, and executing a first ink-jet printing operation to a printing region of the medium; (d) the printing module extracting the data grouped into the even-number group and executing a second ink-jet printing operation to the printing region; and (e) the printing module completing the second ink-jet printing operation for forming a complete printing image on the medium.

A liquid ejecting apparatus includes a liquid ejecting head formed with a nozzle opening from which a liquid droplet is ejected, and having a driving voltage information ID in a reference state specific to each liquid ejecting head, a pressure generating chamber communicating with the nozzle opening, a piezoelectric vibrator, expanding and contracting the pressure generating chamber, a driving signal generator generating a driving signal to displace the piezoelectric vibrator, a switch, selectively applying the driving signal to the piezoelectric vibrator based on liquid ejecting data, and a flexible flat cable transmitting the driving signal to the piezoelectric vibrator. A voltage obtained by adding a correction coefficient to a voltage specified in the driving voltage information ID is used as a reference driving voltage.

The present invention discloses an image forming device allowing a printing section (21) inside of a casing (2) to print paper (P) and discharging the printed paper (P) from the casing (2) through a discharge port (85) of the casing (2), in which a discharge tray (87) is configured such that the position thereof is switchable from a placement position for covering the surface of a feeding belt (101) and receiving the paper (P) discharged from the casing (2) to an exposure position for exposing the surface of the feeding belt (101), and vice versa, wherein a surface of the discharge tray (87) has a coefficient of friction lower than the surface of the feeding belt (101). Thereby, the surface of the feeding belt (101) is prevented from the printing surface of the paper (P), so as to prevent printing quality of the printing surface from decreasing.

An ink for inkjet recording of the invention includes water and a pigment, where the pigment is dispersed using a polymer having a refractive index of at least 1.58 or more, an acid value of 50 mgKOH / g to 120 mgKOH / g, and a weight average molecular weight of 20000 to 120000. It is preferable that the polymer is prepared by using a (meta)acrylate and / or a sulfur-containing (meth)acrylate which have at least a plurality of aromatic rings.

An image forming apparatus includes an ink-ejecting unit, a region dividing unit, and a preparatory ejection unit. The ink-ejecting unit has a recording head aligned in a width direction which is substantially perpendicular to a transport direction of a recording sheet, and ejects ink onto the recording sheet through plural orifices of the recording head in accordance with print data to be printed in response to a print instruction, thereby printing an image. The region dividing unit divides, in the width direction of the recording sheet, a print region of the recording sheet into a user region and a print control region. The preparatory ejection unit preparatorily ejects ink onto the recording sheet through the plural orifices so that an amount of ink ejected through an orifice for the print control region is smaller than an amount of ink ejected through an orifice for the user region.

An object of the invention is to provide a printer apparatus which can perform printing to the whole surface of a recording sheet with no margin while print quality is not lost. A configuration of the invention is a printer apparatus which has a printing unit comprising a pressing member which is provided in parallel with a heat generating unit of the thermal head while being opposite the heat generating unit of the thermal head; a first roller which is provided in parallel with the pressing member; and an endless belt which is extended with a tension so as to involve the pressing member and the first roller. In the printer apparatus, the thermal head is pressed against the pressing member through an ink sheet and the endless belt, the recording sheet is conveyed between the ink sheet and the endless belt, and the printing is performed by transferring ink in the ink sheet to the recording sheet with the thermal head.

The invention provides a processing box comprising a shell, wherein the shell comprises a carbon powder cavity for accommodating carbon powder; a sensitive drum, a charging roller, a developing roller and a power discharging knife are arranged in the shell, wherein the charging roller is used for supplying power to the sensitive drum, the developing roller is used for transmitting the carbon powder to the sensitive drum, the power discharging knife is used for regulating the thickness of a carbon powder layer on the developing roller, one end of the charging roller is connected with an electric conduction piece, and a voltage reduction device is connected between the electric conduction piece and the power discharging knife. The suitable voltage reduction device can be selected in the invention according to the characteristics of the carbon powder loaded by the processing box and the developing roller so as to ensure that the carbon powder adsorbed on the developing roller to carry suitable developing roller, thereby reducing printing quality problems and avoiding the waste of the carbon powder.

The invention disclose a high-resolution printing device and printing equipment. The high-resolution printing device carries out ink jetting operation in the printing direction and comprises a sprayerand a mounting base, wherein at least one row of uniform jetting orifices is formed in the sprayer; the sprayer is arranged on the mounting base; and the included angle formed by the straight line ofthe row of jetting orifices and the straight line of the printing direction within the same plane is not equal to 90 degrees and also is not equal to 0 degree. On the basis of the sprayer with the existing resolution, the resolution is increased through changing the arrangement form, so that the resolution is increased without increasing the cost to realize a high resolution effect; and if the resolution is increased, the bonding power among the particle material is also increased to further improve the product quality.

The present invention aims to provide coated printing paper having good printing quality combined with the property of decomposing hazardous substances upon exposure to light and resistance to fading.Coated printing paper comprising a coating layer containing a pigment and an inorganic adhesive and an organic adhesive on a base paper, wherein the coating layer contains 1-30 parts by weight of titanium dioxide having an average secondary particle diameter of 300-2000 nm per 100 parts by weight of the pigment and the coated paper has a PPS roughness of 0.5-5.0 μm.

A base part of a paper feeding device for supporting paper edges of a plurality of sheets of paper is provided with paper feeding load applying means which extends in a paper feeding direction and includes a plurality of convex portions having a same height and arranged on a surface of the paper feeding load applying means in parallel in a paper feeding direction, and a paper feeding roller which comes in contact with an uppermost sheet of paper to apply a feeding force to the sheet of paper. A surface of the paper feeding load applying means is divided into a front side region and a back side region, and all the convex portions positioned in the back side region are eliminated thereby to form a flat face in the back side region.