JPH0187461U

JPH0187461U -

Info

Publication number: JPH0187461U
Application number: JP18154387U
Authority: JP
Priority date: 1987-11-27
Filing date: 1987-11-27
Publication date: 1989-06-09

Description

[Brief explanation of the drawing]

第１図は本考案によるフラツトベツト型イメー
ジスキヤナの基本的な構成例を示す外観図、第２
図は対象となる文字印刷物の一例を示す図、第３
図は文字印刷物の一部を拡大した所と、その部分
においてこの考案の効果を説明するための図、第
４図ａ，ｂは同実施例における裏抜けの影響軽減
の効果を説明するための濃度ヒストグラムを示す
図である。１……文字印刷物、２……フラツトベツト形イ
メージスキヤナ、３……透明架台、４……遮光扉
、５……遮光扉４の透明架台３と面する部分、す
なわち遮光扉内側の押え板、６……スイツチ、７
……処理機、８……ケーブル、９……モニター、
１０……デイスク装置、１１……マウス装置、２
１……紙白部分（裏印刷なし）、２３……裏印刷
、３０……濃度ヒストグラムの紙白部、３１……
濃度ヒストグラムの文字部、３２……紙白部にお
ける最頻濃度、３３……文字部における最頻濃度
、３４……裏抜けの影響発生部。 Figure 1 is an external view showing an example of the basic configuration of a flat bed image scanner according to the present invention;
The figure is a diagram showing an example of the target character printed matter,
The figure is an enlarged view of a part of the printed text and a diagram for explaining the effect of this invention in that part. Figures 4a and b are diagrams for explaining the effect of reducing the influence of bleed-through in the same embodiment. FIG. 3 is a diagram showing a density histogram. DESCRIPTION OF SYMBOLS 1... Character printed matter, 2... Flat bed type image scanner, 3... Transparent mount, 4... Light-shielding door, 5... The part of the light-shielding door 4 facing the transparent mount 3, that is, the presser plate on the inside of the light-shielding door. 6...Switch, 7
...Processing machine, 8...Cable, 9...Monitor,
10... Disk device, 11... Mouse device, 2
1...Paper white part (no back printing), 23...Back printing, 30...Paper white part of density histogram, 31...
Text portion of the density histogram, 32... Most frequent density in paper white area, 33... Most frequent density in text part, 34... Part where strike-through effect occurs.

Claims

[Scope of utility model registration request]

In a device that measures and manages the print quality of text-based printed matter such as dictionaries and textbooks, it scans specific pages of text-based printed matter to be managed.
A flatbed image scanner is used as an input means for dividing into a plurality of pixels and capturing them as gradation signals between each pixel, and the image scanner is equipped with a light-shielding door that blocks external light and holds down the object to be measured. . A character printing quality control device, wherein a portion of the presser plate inside the light-shielding door is black.