There is described a sheet-fed printing press (1000; 1000*) comprising at least two printing units (200; 200.1, 200.2; 200.1*, 200.2*) located one after the other, each printing unit (200; 200.1, 200.2; 200.1*, 200.2*) being adapted to carry out simultaneous recto-verso printing of the sheets (S) and including two printing cylinders (105, 106) cooperating with one an other and forming a printing nip, the two printing cylinders (105, 106) each collecting ink patterns from at least two associated plate cylinders (15A, 15B, 16A, 16B) wherein the two printing cylinders (105, 106) are located one above the other such that the sheets (S) travel laterally through each printing unit (200; 200.1, 200.2; 200.1*, 200.2*) from a first lateral side (201 a; 201 a*) located upstream of the printing nip to a second lateral side (201 b; 201 b*) located downstream of the printing nip, wherein a number of at least two sheet transfer elements (110, 120, 95) is provided downstream of the printing nip of a first one (200.1; 200.1*) and upstream of the printing nip of a second one (200.2; 200.2*) of the at least two printing units (200.1, 200.2; 200.1*, 200.2*) to transfer the sheets (S).

A device comprising an electrical circuit on a substrate. The circuit includes light-emitting semiconductor components having a plurality of a first type and at least one of a further type, and a first plurality of parallel circuit paths. Each first type component emits light with a spectrum comprising a local intensity maximum in a first wavelength range; each further type component, in a further wavelength range different from the first wavelength range. At least one of the parallel circuit paths comprises a further type component. No operating voltage sum of the parallel circuit paths differs by more than 0.6 V from an operating voltage sum of the parallel circuit paths. Also disclosed are a light source; a printing machine; methods, in particular for producing a printed product and for irradiating an irradiation material; a printed product; an arrangement; and uses of the light source.

A printer drying device includes a first drying unit having a first row of energy emitting elements to dry a printing substance on a printing medium, the energy emitting elements connected in series along a medium transport direction of the printing medium; and a second drying unit having a second row of energy emitting, the energy emitting elements of the second row being connected in series along the medium transport direction and being located downstream in the medium transport direction from the first row of energy emitting elements. The first and second drying units are electrically connected in parallel.

An adjustable end cap for a high intensity LED light system includes an end cap body, a pivot base coupled to the end cap body and one or more adjustable fittings pivotally secured to the pivot base. Both coolant and electrical fittings can be provided. The end cap body defines passages therein that communicate with the coolant and electrical passages in the LED device. The coolant and electrical fittings can be pivoted transverse to the longitudinal axis of the LED device. Ninety degrees of pivot range for each fitting can be provided in one example.

A machine arrangement, that sequentially processes sheet-type substrates, includes a plurality of different processing stations, one of which includes a non-impact printing device that prints the substrates. Further processing stations are a primer application device that primes the substrates and a dryer for drying the primer applied to the substrates. The primer application device and the dryer precede the non-impact printing device, in the direction of travel of the substrates. The processing station including the non-impact printing device, also includes a printing cylinder, on the circumference of which, the non-impact printing device that prints the substrates is arranged.

A machine arrangement, for sequentially processing sheet-type substrates, includes a plurality of different processing stations, one of which includes a non-impact printing device that prints the substrates. The processing station, including the non-impact printing device, also includes a printing cylinder, on the circumference of which, the non-impact printing device that prints the substrates is arranged. On the circumferential surface of the printing cylinder, four substrates are or can be placed behind each other in the circumferential direction. Each of the substrates that are to be conveyed are retained in one of a force-locking and a form-fitting manner on the circumferential surface of the printing cylinder by at least one retaining element.

A system and method for determining when an emulsion or screen is properly cared including a light sensor located on an opposing side of the screen or emulsion from an LED light source operating in at least one wavelength in the ultraviolet range and a sensor monitor that that receives signals from the light sensor and determines the amount of light passing through the emulsion. When the amount of light passing through the emulsion reaches a minimum or approximates zero the sensor monitor may optionally deactivate the LED light source.

Provided is a heat dissipation device capable of uniformly cooling an entire base plate (support member) without generating stress in a heat pipe. A heat dissipation device configured to dissipate heat of a heat source into the air, the heat dissipation device including: a support member disposed such that a side of a first principal surface is in close contact with a heat source; a heat pipe thermally joined to a second principal surface of the support member and configured to transport the heat from the heat source; and multiple heat radiation fins disposed in a space adjoining the second principal surface, thermally joined to the heat pipe, and configured to dissipate the heat transported by the heat pipe, in which the respective heat radiation fins are directly joined to the second principal surface in a region other than a region in which the heat pipe is mounted.

A machine arrangement, for sequentially processing sheet-type substrates, includes a plurality of different processing stations, one of which includes a non-impact printing device that prints the substrates. The processing station, including the non-impact printing device, also includes a printing cylinder, on the circumference of which, the non-impact printing device that prints the substrates is arranged. On the circumferential surface of the printing cylinder, four substrates are or can be placed behind each other in the circumferential direction. Each of the substrates that are to be conveyed are retained in one of a force-locking and a form-fitting manner on the circumferential surface of the printing cylinder by at least one retaining element.

A light emitting apparatus includes a light source, a thin plate-shaped mirror unit which guides light from the light source, and a tension imparting means which imparts tension to the mirror unit. The tension imparting means may have at least any one of a first tension imparting mechanism which imparts tension in a first direction toward the light source along a surface of the mirror unit and a second tension imparting mechanism which imparts tension in a second direction opposite to the first direction, and further, the tension imparting mechanism may have at least any one of a third tension imparting mechanism which imparts tension in a third direction in parallel with the light source along the surface of the mirror unit and a fourth tension imparting mechanism which imparts tension in a fourth direction opposite to the third direction.