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A delivery for a machine for processing flat printing materials, includes a sheet guide surface with suction openings opening into the sheet guide surface, a suction chamber communicating with the suction openings, and a sheet conveyor for gripping a respective sheet at an edge thereof extending in

A delivery for a machine for processing flat printing materials, includes a sheet guide surface with suction openings opening into the sheet guide surface, a suction chamber communicating with the suction openings, and a sheet conveyor for gripping a respective sheet at an edge thereof extending in a sheet-conveying direction and for dragging the respective sheet over the sheet guide surface, the suction chamber being formed as a throttling duct; a machine for processing flat printing materials including the delivery; and a sheet-processing printing machine including the delivery.

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1. A delivery for a machine for processing flat printing materials, comprising a guide surface with suction openings opening into said guide surface, a suction chamber being formed as a throttling duct communicating with said suction openings, and a sheet conveyor having grippers for gripping a resp

1. A delivery for a machine for processing flat printing materials, comprising a guide surface with suction openings opening into said guide surface, a suction chamber being formed as a throttling duct communicating with said suction openings, and a sheet conveyor having grippers for gripping a respective one of the flat printing materials at a leading edge thereof and for dragging the respective one of the flat printing materials in a conveying direction over said guide surface. 2. The delivery according to claim 1, wherein the machine is a sheet-processing printing machine. 3. A machine for processing flat printing materials, comprising a delivery, a guide surface with suction openings opening into said guide surface, a suction chamber being formed as a throttling duct communicating with said suction openings, and a sheet conveyor having grippers for gripping a respective one of the flat printing materials at a leading edge thereof and for dragging the respective one of the flat printing materials in a conveying direction over said guide surface. 4. A sheet-processing printing machine, comprising a delivery, a sheet guide surface with suction openings opening into said sheet guide surface, a suction chamber being formed as a throttling duct communicating with said suction openings, and a sheet conveyor having grippers for gripping a respective sheet at a leading edge thereof and for dragging the respective sheet in a conveying direction over the sheet guide surface. 5. A delivery for a machine for processing flat printing materials, the delivery comprising: a guide surface having a plurality of groups of suction openings opening into said guide surface; a conveyor having grippers gripping a respective one of the flat printing materials at a leading edge thereof and dragging the respective one of the flat printing materials in a conveying direction over said guide surface; and a plurality of suction chambers being formed as throttling ducts each communicating with the suction openings of a respective one of said groups of suction openings. 6. The delivery according to claim 5, wherein said throttling ducts have an extent in the conveying direction which is at most equal to a corresponding extent of a smallest possible one of the flat printing materials which can be processed. 7. The delivery according to claim 5, wherein a respective throttling duct has a first suction connection at an end thereof located upline with respect to the conveying direction, and has a second suction connection at an end thereof located downline from said upline end thereof.